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P/NO : AFN75474422 MARCH, 2011

Blu-ray DiscTMHOME CINEMA SYSTSERVICE MANUAL

MODEL: HX806CM (HX806CM, SH86SM-S, SH85TM-W)

CAUTIONBEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONSIN THIS MANUAL.

Website http://biz.lgservice.comInternal Use Only

M ODE L : HX

8 0 6 C M

( HX

8 0 6 C M

, S H

8 6 S M- S

, S H

8 5 T M- W

)

S E RV I C E MAN

UAL

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1-1

CONTENTS

SECTION 1 ........SUMMARYSECTION 2 ........ELECTRICALSECTION 3 ........CABINET & MAIN CHASSISSECTION 4 ........MT8555D F/E LOADER PARTSECTION 5 ........REPLACEMENT PARTS LIST

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1-2

SECTION 1

SUMMARY

CONTENTS

PRODUCT SAFETY SERVICING GUIDELINES FOR BLU-RAY DISC PLAYER PRODUCTS .............. 1-3

SERVICING PRECAUTIONS .......................................................................................................................... 1-4 GENERAL SERVICING PRECAUTIONS INSULATION CHECKING PRODEDURE ELECTROSTATICALLY SENSITIVE (ES) DEVICES

HIDDEN KEY MODE ........................................................................................................................................ 1-5

FIRMWARE UPDATE GUIDE ......................................................................................................................... 1-6

NETWORK UPDATE ....................................................................................................................................... 1-9

SPECIFICATIONS .......................................................................................................................................... 1-12

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1-3

PRODUCT SAFETY SERVICING GUIDELINESFOR BLU-RAY DISC PLAYER PRODUCTS

IMPORTANT SAFETY NOTICE

This manual was prepared for use only by properly trained audio-video servicetechnicians.When servicing this product, under no circumstances should the original design bemodified or altered without permission from LG Corporation. All components shouldbe replaced only with types identical to those in the original circuit and their physicallocation, wiring and lead dress must conform to original layout upon completion ofrepairs.

Special components are also used to prevent x-radiation, shock and fire hazard.These components are indicated by the letter x included in their component des-ignators and are required to maintain safe performance. No deviations are allowedwithout prior approval by LG Corporation.Circuit diagrams may occasionally differ from the actual circuit used. This way,implementation of the latest safety and performance improvement changes into theset is not delayed until the new service literature is printed.CAUTION : Do not attempt to modify this product in any way. Never perform cus-tomized installations without manufacturers approval. Unauthorized modificationswill not only void the warranty, but may lead to property damage or user injury.

Service work should be performed only after you are thoroughly familiar with thesesafety checks and servicing guidelines.

GRAPHIC SYMBOLSThe exclamation point within an equilateral triangle is intended toalert the service personnel to important safety information in theservice literature.The lightning flash with arrowhead symbol within an equilateraltriangle is intended to alert the service personnel to the presence ofnoninsulated dangerous voltage that may be of sufficient magnitudeto constitute a risk of electric shock.The pictorial representation of a fuse and its rating within an equi-lateral triangle is intended to convey to the service personnel thefollowing fuse replacement caution notice:CAUTION : FOR CONTINUED PROTECTION AGAINST RISKOF FIRE, REPLACE ALL FUSES WITH THE SAME TYPE ANDRATING AS MARKED NEAR EACH FUSE.

SERVICE INFORMATION

While servicing, use an isolation transformer for protection from AC line shock. Afterthe original service problem has been corrected, make a check of the following:FIRE AND SHOCK HAZARD

1. Be sure that all components are positioned to avoid a possibility of adjacentcomponent shorts. This is especially important on items trans-ported to and fromthe repair shop.

2. Verify that all protective devices such as insulators, barriers, covers, shields,strain reliefs, power supply cords, and other hardware have been reinstalled perthe original design. Be sure that the safety purpose of the polarized line plug hasnot been defeated.

3. Soldering must be inspected to discover possible cold solder joints, soldersplashes, or sharp solder points. Be certain to remove all loose foreign par-ticles.

4. Check for physical evidence of damage or deterioration to parts and compo-nents, for frayed leads or damaged insulation (including the AC cord), andreplace if necessary.

5. No lead or component should touch a high current device or a resistor rated at 1watt or more. Lead tension around protruding metal surfaces must be avoided.

6. After reassembly of the set, always perform an AC leakage test on all exposedmetallic parts of the cabinet (the channel selector knobs, antenna terminals,handle and screws) to be sure that set is safe to operate without danger ofelectrical shock. DO NOT USE A LINE ISOLATION TRANSFORMER DURINGTHIS TEST. Use an AC voltmeter having 5000 ohms per volt or more sensitivityin the following manner: Connect a 1500 ohm, 10 watt resistor, paralleled by a.15 mfd 150V AC type capacitor between a known good earth ground water pipe,conduit, etc.) and the exposed metallic parts, one at a time. Measure the AC volt-age across the combination of 1500 ohm resistor and .15 mfd capacitor. Reversethe AC plug by using a non-polarized adaptor and repeat AC voltage measure-ments for each exposed metallic part. Voltage measured must not exceed 0.75volts RMS. This corresponds to 0.5 milliamp AC. Any value exceeding this limitconstitutes a potential shock hazard and must be corrected immediately.

TIPS ON PROPER INSTALLATION

1. Never install any receiver in a closed-in recess, cubbyhole, or closely fitting shelfspace over, or close to, a heat duct, or in the path of heated air flow.

2. Avoid conditions of high humidity such as: outdoor patio installations where dewis a factor, near steam radiators where steam leakage is a factor, etc.

3. Avoid placement where draperies may obstruct venting. The customer shouldalso avoid the use of decorative scarves or other coverings that might obstructventilation.

4. Wall- and shelf-mounted installations using a commercial mounting kit mustfollow the factory-approved mounting instructions. A product mounted to a shelfor platform must retain its original feet (or the equivalent thickness in spacers) toprovide adequate air flow across the bottom. Bolts or screws used for fastenersmust not touch any parts or wiring. Perform leakage tests on customized instal-lations.

5. Caution customers against mounting a product on a sloping shelf or in a tiltedposition, unless the receiver is properly secured.

6. A product on a roll-about cart should be stable in its mounting to the cart. Caution the customer on the hazards of trying to roll a cart with small casters

across thresholds or deep pile carpets.

7. Caution customers against using extension cords. Explain that a forest of exten-sions, sprouting from a single outlet, can lead to disastrous consequences tohome and family.

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1-4

SERVICING PRECAUTIONS

CAUTION: Before servicing the BLU-RAY DISC PLAYER cov-ered by this service data and its supplements and addends,read and follow the SAFETY PRECAUTIONS. NOTE: ifunforeseen circumstances create conflict between the follow-ing servicing precautions and any of the safety precautions inthis publications, always follow the safety precautions.Remember Safety First :

General Servicing Precautions1. Always unplug the BLU-RAY DISC PLAYER AC power cord

from the AC power source before: (1) Removing or reinstalling any component, circuit board,

module, or any other assembly. (2) Disconnecting or reconnecting any internal electrical

plug or other electrical connection. (3) Connecting a test substitute in parallel with an electro-

lytic capacitor.

Caution : A wrong part substitution or incorrect polar-ity installation of electrolytic capacitors may result in anexplosion hazard.

2. Do not spray chemicals on or near this BLU-RAY DISCPLAYER or any of its assemblies.

3. Unless specified otherwise in this service data, clean elec-trical contacts by applying an appropriate contact cleaningsolution to the contacts with a pipe cleaner, cotton-tippedswab, or comparable soft applicator.Unless specified otherwise in this service data, lubrication ofcontacts is not required.

4. Do not defeat any plug/socket B+ voltage interlocks withwhitch instruments covered by this service manual might beequipped.

5. Do not apply AC power to this BLU-RAY DISC PLAYERand / or any of its electrical assemblies unless all solidstatedevice heat sinks are correctly installed.

6. Always connect the test instrument ground lead to anappropriate ground before connecting the test instrumentpositive lead. Always remove the test instrument ground

lead last.

Insulation Checking ProcedureDisconnect the attachment plug from the AC outlet and turnthe power on. Connect an insulation resistance meter (500V)to the blades of the attachment plug. The insulation resistancebetween each blade of the attachment plug and accessibleconductive parts (Note 1) should be more than 1Mohm.Note 1 : Accessible Conductive Parts include Metal panels,Input terminals, Earphone jacks,etc.

Electrostatically Sensitive (ES) DevicesSome semiconductor (solid state) devices can be damagedeasily by static electricity. Such components commonly arecalled Electrostatically Sensitive (ES) Devices. Examples oftypical ES devices are integrated circuits and some field effecttransistors and semiconductor chip components.The following techniques should be used to help reduce theincidence of component damage caused by static electricity.

1. Immediately before handling any semiconductor compo-nent or semiconductor-equipped assembly, drain off anyelectrostatic charge on your body by touching a knownearth ground. Alternatively, obtain and wear a commerciallyavailable discharging wrist strap device, which should beremoved for potential shock reasons prior to applying powerto the unit under test.

2. After removing an electrical assembly equipped with ESdevices, place the assembly on a conductive surface suchas aluminum foil, to prevent electrostatic charge buildup orexposure of the assembly.

3. Use only a grounded-tip soldering iron to solder or unsolderES devices.

4. Use only an anti-static solder removal device. Some solderremoval devices not classified as anti-static can generateelectrical charges sufficient to damage ES devices.

5. Do not use freon-propelled chemicals. These can generatean electrical charge sufficient to damage ES devices.

6. Do not remove a replacement ES device from its protectivepackage until immediately before you are ready to installit. (Most replacement ES devices are packaged with leadselectrically shorted together by conductive foam, aluminumfoil,or comparable conductive material).

7. Immediately before removing the protective material fromthe leads of a replacement ES device, touch the protectivematerial to the chassis or circuit assembly into which thedevice will be installed.

Caution: Be sure no power is applied to the chassis or cir-cuit, and observe all other safety precautions.

8. Minimize bodily motions when handling unpackagedreplacement ES devices. (Normally harmless motion suchas the brushing together of your clothes fabric or the liftingof your foot from a carpeted floor can generate static elec-tricity sufficient to damage an ES device.)

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1-5

HIDDEN KEY MODE

HIDDEN MODE AVAILABLESTATUS ENTRANCE KEY EXIT KEY DISPLAY

DISPLAY SYSTEMINFORMATION SETUP MENU ON

1+3+9+7+1+3+9+ENTER or MP2

PAUSE or HOME 'Pause' Key

FACTORY RESET

SYSTEMINFORMATION

(KEY,VERSION)

DISPLAY DEBUGINFORMATION

(NO DISC or OPEN)and MENU OFF 4+5+6+2+5+8+0 RETURN/PAUSE

1.PLATFORMINFORMATION

2.FATAL ERROR MESSAGE3.SYSTEM DEBUG MESSAGE4.LOADER DEBUG MESSAGE5.HDMI

CONNECTION INFO

EEPROM INITIAL POWER ONSTATUSFront 'STOP' +RMC '0' for 5s Auto exit "E2P CLEAR"

DOOR LOCKDVD FUNCTIONand POWER ON

STATUS

Front 'STOP' +RMC 'STOP' for 5s Toggling

"Locked" displayfor 3s

WIRELESS SPKREMATE

POWER ONSTATUS

Front 'STOP' +RMC 'MUTE' "REMATE"

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1-6

FIRMWARE UPDATE GUIDE

1. COPY AN UPDATE FILE TO A MEDIA (USB OR CD-ROM)

HB806 Update File Name: LG_HB_6200M55.ROM

1) An update le have to be copied onto the root of le system.2) USB and CD-ROM are able to use rmware update.

< Example: Nero Burning Rom >

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2. UPDATE FIRMWARE

1) Insert USB or CD-ROM which has an update le.2) OSD responds to the insertion event.

3) OSD is shown as below.

< Firmware Update OSD >

OSD contents: Front Panel contents:

UPDATE

Driver Version: H10LGN0400SW Version: BD.5.081.00.C

A new update was foundDo you want to update?

SW Version BD.5.143.00

OK Cancel

UPGRADE

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3. DURING UPDATING

1) Progressive bar is shown on the update time repeatedly.2) Tray is opened.

Front Panel contents:

4. AFTER UPDATE COMPLETE

1) Power off / on automatically after update complete.2) Tray will be closed.

UPGRADE

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1-9

NETWORK UPDATE

1) Press Home on the Remote Control.

2) Press or to select the Setup mode.

3) Select Others --> Software Update

4) On the UPDATE window, press or ENTER tocheck for the newest update.

(Checking will takes about one minute.)

Caution: Pressing Enter while checking for the update will endprocess

You can update the rmware by connecting your unit device directly to the S/W update server.

Con guring Network SettingsTo update the rmware by connecting your player directly to the S/W update server, your player must beconnected to network. If your player is not connected to network, make a physical connection.

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If newer version exists,

5) If newer version exists, the messageA new update was found. Do you want todownload it? appears.Select OK to download the update.(Selecting CANCEL will end the update.)

6) The player starts downloading the newest updatefrom the SBP server.

7) When downloading is completed, the message, Download is complete. Do you want to

update? appears.

8) Select OK to start updating

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9) Update will be processed

Caution : Do not turn off the power during rmware update.

10) When update is completed, the message, Update is complete. will appear, and the power will turn off automatically after 5 seconds.

11) Turn the power back on.The system now operates with the new version.

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1-12

SPECIFICATIONS GENERALPower requirements: Refer to main label on the rear panel.Power consumption: Refer to main label on the rear panel.Dimensions (W x H x D): Approx. 360 x 57 x 307 mm without foot

Net Weight (Approx.): 2.8 kgOperating temperature: 5 C to 35 C (41 F to 95 F)Operating humidity: 5 % to 90 %

INPUTS / OUTPUTSVIDEO OUT: 1.0 V (p-p), 75 , sync negative, RCA jack x 1HDMI OUT (video/audio): 19 pin (Type A, HDMI Connector)ANALOG AUDIO IN: 2.0 Vrms (1 kHz, 0 dB), 600 , RCA jack (L, R) x 1DIGITAL IN (OPTICAL): Optical jack x 1PORT. IN: 0.5 Vrms (3.5 mm stereo jack)

TUNERFM Tuning Range: 87.5 to 108.0 MHz or 87.50 to 108.00 MHz

AMPLIFIERPower output (3 ), (RMS), THD 10 % (3 / 3 )Total 425 WFront 140 W x 2Sub-Woofer 145 W (Passive)

SYSTEMLaser: Semiconductor laserWavelength: 405 nm / 650 nmSignal system: Standard NTSC/PAL color TV systemFrequency response: 20 Hz to 20 kHz (48 kHz, 96 kHz, 192 kHz sampling)Signal-to-noise ratio: More than 80 dBTotal harmonic distortion: 0.05 % at 1 WDynamic range: More than 85 dBLAN port: Ethernet jack x 1, 10BASE-T / 100BASE-TXBus Power Supply (USB): DC 5 V 500 mA

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1-13

SPEAKERSFront speaker (Left/ Right)Type: 2 Way 2 speakerImpedance Rated: 3

Input Power: 140 WMax. Input power: 280 WNet Dimensions (W x H x D): 150 x 260 x 150 mm (5.9 x 10.2 x 5.9 inches)Net Weight: 0.8 kg (1.7 lbs)

SubwooferType: 1 Way 1 speakerImpedance Rated: 3

Input Power: 145 WMax. Input power: 290 WNet Dimensions (W x H x D): 216 x 382 x 312 mm (8.5 x 15 x 12.2 inches)

Net Weight: 5.54 kg (11.90 lbs)

Design and specifi cations are subject to change without notice.

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1-14

MEMO

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2-1

SECTION 2 ELECTRICAL

CONTENTSDIGITAL DISPLAY & MEDIA TRAINING MASTER ................................................................................... 2-2

1. DISTORTED PICTURE ......................................................................................................................... 2-22. NO PICTURE ........................................................................................................................................ 2-73. PICTURE COLOR ............................................................................................................................... 2-124. NOISE/AUDIO PROBLEMS ................................................................................................................ 2-145. MISCELLANEOUS .............................................................................................................................. 2-176. BLU-RAY PLAYER ............................................................................................................................. 2-267. YouTube .............................................................................................................................................. 2-278. AccuWeather ....................................................................................................................................... 2-289. PICASA ............................................................................................................................................... 2-29

ONE POINT REPAIR GUIDE ...................................................................................................................... 2-301. NO POWER PROBLEM ..................................................................................................................... 2-302. AMP POWER ...................................................................................................................................... 2-323. THE LAYOUT OF MAIN BOARD ....................................................................................................... 2-334. NO POWER PROBLEM (3.3 VA) ....................................................................................................... 2-345. NO BOOTING WHEN YOU TURN THE UNIT ON, NO MESSAGE OR

PLEASE WAIT ON FRONT PANEL ................................................................................................. 2-356. WIRED NETWORK CONNECTION ERROR ..................................................................................... 2-437. BAD HDMI VIDEO / AUDIO OUTPUT ................................................................................................ 2-448. THE LAYOUT OF AMP BOARD ......................................................................................................... 2-459. NO SPEAKER OUTPUT ..................................................................................................................... 2-46

ELECTRICAL TROUBLESHOOTING GUIDE ........................................................................................... 2-471. POWER SUPPLY ON SMPS BOARD ................................................................................................ 2-472. POWER SUPPLY ON MAIN BOARD ................................................................................................. 2-483. SYSTEM PART ................................................................................................................................... 2-504. NO CVBS VIDEO OUTPUT ................................................................................................................ 2-525. NO AUDIO OUTPUT .......................................................................................................................... 2-536. NO HDMI OUTPUT ............................................................................................................................. 2-55

WAVEFORMS ............................................................................................................................................... 2-561. SYSTEM PART - MICOM ................................................................................................................... 2-562. SYSTEM PART - MPEG ..................................................................................................................... 2-573. AUDIO PART - 1 (AUDIO DIR) ........................................................................................................... 2-574. AUDIO PART - 2 (DSP) ...................................................................................................................... 2-58

5. VIDEO PART (100% FULL COLOR -BAR) ........................................................................................ 2-596. HDMI PART ........................................................................................................................................ 2-60

WIRING DIAGRAM ...................................................................................................................................... 2-61

BLOCK DIAGRAM ....................................................................................................................................... 2-63

CIRCUIT DIAGRAMS .................................................................................................................................. 2-651. SMPS - POWER CIRCUIT DIAGRAM................................................................................................ 2-652. MAIN - MICOM CIRCUIT DIAGRAM .................................................................................................. 2-673. MAIN - AUDIO ADC/DIR CIRCUIT DIAGRAM ................................................................................... 2-694. MAIN - POWER CIRCUIT DIAGRAM ................................................................................................. 2-715. MAIN - AUDIO DSP CIRCUIT DIAGRAM .......................................................................................... 2-736. MAIN - MT8555D CIRCUIT DIAGRAM .............................................................................................. 2-757. MAIN - DDR & MEMORY CIRCUIT DIAGRAM .................................................................................. 2-778. MAIN - MT8555D FRONT-END CIRCUIT DIAGRAM ........................................................................ 2-799. MAIN - AV INPUT/OUTPUT CIRCUIT DIAGRAM .............................................................................. 2-81

10. PWM CIRCUIT DIAGRAM .................................................................................................................. 2-8311. AMP CIRCUIT DIAGRAM ................................................................................................................... 2-8512. FRONT - TIMER / KEY CIRCUIT DIAGRAM ..................................................................................... 2-8713-1. FRONT JACK CIRCUIT DIAGRAM (USB&PTB&MIC) - OPTIONAL PART ................................... 2-8913-2. FRONT JACK CIRCUIT DIAGRAM (USB&PTB) - OPTIONAL PART ............................................ 2-91

CIRCUIT VOLTAGE CHART ...................................................................................................................... 2-93

PRINTED CIRCUIT BOARD DIAGRAMS .................................................................................................. 2-951. MAIN P. C. BOARD DIAGRAM .......................................................................................................... 2-952. SMPS P. C. BOARD DIAGRAM ......................................................................................................... 2-973. AMP P.C.BOARD DIAGRAM .............................................................................................................. 2-994. FRONT TIMER P. C. BOARD DIAGRAM ......................................................................................... 2-1015. POWER KEY P. C. BOARD DIAGRAM ........................................................................................... 2-1026. FRONT JACK P. C. BOARD DIAGRAM (OPTIONAL PART) .......................................................... 2-103

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2-2

DIGITAL DISPLAY & MEDIA TRAINING MASTER

Objective: To provide clear and concise guidelines for customer service agents to handle calls onbox goods calls.

1. DISTORTED PICTURE 1-1. Lines on Picture Distorted picture refers to the customer getting video, but there is a problem with the video.

What cables isthe customer using to

connect the BD?

NO

YES

Determine what cables the customer is using to connectthe BD to the TV and if connected properly. Refer to OM for

connections. Tighten any loose cables. Make sure the customeris not connecting a BD to VCR or BD to DVD Recorder.

Copy protection can distort the picture on older DVD models.

Is the TV setto the correct input?

NO

YES

Make sure the TV is on the correct input.Turn TV off, then on to determine input.

Video when using composite, or component.DVI when using DVI, and HDMI when using HDMI.

Do ghosting appear when watching multiple discs?

NO

YES

One disc displaying the issue is a problem with the disc.Multiple discs displaying the problem could indicate the BD lens needs to

be cleaned. Recommend the customer use a lens cleaner on the BD.A lens cleaner is available at any local electronics retailer.

Do lines appearwhen watching multiple discs?

NO

YES

One disc displaying the issue is a problem with the disc.Multiple discs displaying the problem could indicate the BD lens needs to

be cleaned. Recommend the customer use a lens cleaner on the BD.A lens cleaner is available at any local electronics retailer.

Do lines appearwhen the BD is

connected to another TV?

NO

YES

Connect the BD to another TV and play a disc.No lines during disc play back indicates a problem with the first TV.

Please refer to the owners manual for instructions on how toconnect the BD to a TV. If the BD has a problem on the

second TV, then see service chart for service information.

Has the customer triedanother set of cables?

NOHave the customer try another set of cables. A bad cable can

also cause video problems. Test the cable with another device tothe TV to also determine if the TV is bad. If BD is problem,

please see service chart for service information.

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2-3


What cables is the customerusing to connect the BD?

NO

YES

Determine what cables the customer is using to connect the BD tothe TV and if connected properly. Refer to OM for connections.Tighten any loose cables. Make sure the customer is not connecting a

BD to VCR or BD to DVD Recorder. Copy protection can distortthe picture on older VCR models.

Is the TV set tothe correct input?

NO

YES

Make sure the TV is on the correct input. Turn TV off,then on to determine input. Video when using composite,

or component. DVI when using DVI, and HDMI when using HDMI.

Do ghosting appear whenwatching multiple discs?

NO

YES

One disc displaying the issue is a problem with the disc.Multiple discs displaying the problem could indicate the BD lens

needs to be cleaned. Recommend the customer use a lens cleaneron the BD. A lens cleaner is available at any local electronics retailer.

Do lines appear whenwatching a TV program?

NO

YES

Ghosting appearing when watching a TV program indicates anissue with the display. If the TV program is fine, then connect

the BD to another input on the display to determine

if the problem is following the BD.

Does ghostingappear when the BD is


NO

YES

Connect the BD to another TV and play a disc.No ghosting during disc play back indicates a problem with the first TV.

Please refer to the owners manual for instructions on how toconnect the BD to a TV. If the BD has a problem on the second TV,

then see service chart for service information.





1-2. Ghost Picture Distorted picture refers to the customer getting video, but there is a problem with the video.

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2-4



NO

YES

Determine what cables the customer is using to connect the BD tothe TV and if connected properly. Refer to OM for connections.Tighten any loose cables. Make sure the customer is not connecting

a BD to VCR or BD to DVD Recorder. Copy protection can distortthe picture on older VCR models.


NO

YES

Make sure the TV is on the correct input. Turn TV off,then on to determine input. Video when using composite,


Does rolling appear whenwatching multiple discs?

NO

YES



Does rolling appear whenwatching a TV program?

NO

YES

Rolling appearing when watching a TV program indicatesan issue with the display. If the TV program is fine, then connect

the BD to another input on the display to determine if the problem

is following the BD.

Does rolling appearwhen the BD is connected to

another TV?

NO

YES

Connect the BD to another TV and play a disc. No lines during disc playback indicates a problem with the first TV. Please refer to the owners

manual for instructions on how to connect the BD to a TV. If the BD has aproblem on the second TV, then see service chart for service information.


NOHave the customer try another set of cables. A bad cable can also

cause video problems. Test the cable with another device to the TVto also determine if the TV is bad. If BD is problem,


1-3. Rolling Picture Distorted picture refers to the customer getting video, but there is a problem with the video.

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NO

YES

Determine what cables the customer is using to connect the BD tothe TV and if connected properly. Refer to OM for connections.Tighten any loose cables. Make sure the customer is not connecting a

BD to VCR or BD to DVD Recorder. Copy protection can distortthe picture on older VCR models.


NO

YES

Make sure the TV is on the correct input. Turn TV off, then onto determine input. Video when using composite, or component.

DVI when using DVI, and HDMI when using HDMI.

Does shaking appear whenwatching multiple discs?

NO

YES



Does shaking appear whenwatching a TV program?

NO

YES

Shaking appearing when watching a TV program indicatesn issue with the display. If the TV program is fine, then connect



Does shaking appearwhen the BD is connected to

another TV?

NO

YES

Connect the BD to another TV and play a disc. No shaking duringdisc play back indicates a problem with the first TV. Please refer to

the owners manual for instructions on how to connect the BD to a TV.If the BD has a problem on the second TV,






1-4. Shaky Picture Distorted picture refers to the customer getting video, but there is a problem with the video.

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NO

YES

Determine what cables the customer is using to connect the BD tothe TV and if connected properly. Refer to OM for connections.Tighten any loose cables. Make sure the customer is not connecting

a BD to VCR or BD to DVD Recorder. Copy protection can distortthe picture on older VCR models.


NO

YES

Make sure the TV is on the correct input. Turn TV off,then on to determine input. Video when using composite, or component.


Does blurriness appear whenwatching multiple discs?

NO

YES


needs to be cleaned. Recommend the customer use a lens cleaner onthe BD. A lens cleaner is available at any local electronics retailer.

Does blurriness appear whenwatching a TV program?

NO

YES

Blurriness appearing when watching a TV program indicates anissue with the display. If the TV program is fine, then connect



Does blurriness appearwhen the BD is connected to

another TV?

NO

YES

Connect the BD to another TV and play a disc. No blurrinessduring disc play back indicates a problem with the first TV.

Please refer to the owners manual for instructions on how to connectthe BD to a TV. If the BD has a problem on the second TV,



NOHave the customer try another set of cables.

A bad cable can also cause video problems. Test the cable with anotherdevice to the TV to also determine if the TV is bad. If BD is problem,


1-5. Blurry Picture Distorted picture refers to the customer getting video, but there is a problem with the video.

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2. NO PICTURE 2-1. Black Screen The entire screen is black.

Does the BD on-screenmenu appear?

NO

YES

In case of customer use composite cable please make sure selectingavailable resolution in the menu of the BD player, composite video can justsupport 480i/p. In case of composite output is black please push the stopbutton at the remote controller about 5 sec for changing 480p resolution.


NO

YES

Determine what cables the customer is using to connect the BD tothe TV and if connected properly. Refer to OM for connections.

Tighten any loose cables. Make sure the customer is not connecting aBD to VCR or BD to DVD Recorder. Copy protection can distort

the picture on older VCR models.


NO

YES



Is the customer able towatch TV programming?

NO

YES

If the customer is not able to watch television then he may have aproblem with his television, especially if the cable signal comes

through on a different input. If the customer can not get a TV program,

then he still may have a problem with the particular input on his TV.

Can the customer connectthe BD to another TV?

NO

YES

Have the customer connect the BD to another TV in order todetermine if the problem is the BD or the TV. Refer to the OM for

connections assistance. If the BD works on the second TV,then the customer has a problem with his TV.



also cause video problems. Test the cable with another device to the TVto also determine if the TV is bad. If BD is problem,


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NO

YES



NO

YES

Determine what cables the customer is using to connect the BDto the TV and if connected properly. Refer to OM for connections.




NO

YES

Make sure the TV is on the correct input.Turn TV off, then on to determine input. Video when using composite,



NO

YES





NO

YES





cause video problems. Test the cable with another device tothe TV to also determine if the TV is bad. If BD is problem,


2-2. Blue Screen The entire screen is a solid blue color.

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2-9



NO

YES



NO

YES





NO

YES




NO

YES

If the customer is not able to watch television then he mayhave a problem with his television, especially if the cable signal comesthrough on a different input. If the customer can not get a TV program,



NO

YES







2-3. Snowy Screen A snowy picture is when black and white dots are all over the screen.

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NO

YES



NO

YES




Is the TV set to thecorrect input?

NO

YES




NO

YES





NO

YES




NOHave the customer try another set of cables. A bad cable

can also cause video problems. Test the cable with another device tothe TV to also determine if the TV is bad. If BD is problem,


2-4. No Signal A no signal message appears on the screen of the display.

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Is the customer using adigital cable connection?

NO

YES

Make sure the customers simultaneously connecting analog componentcable with HDMI cable. And then If Copy Protected Disc is playing back,analog component output is no picture. Only when the analog outputis 480i, you can see the picture. In case of No Copy Protected Disc,

you can see the picture regardless of the resolution.

Is the customer using ananalog cable connection?

NO

YES

Customers using an DVI , or HDMI cable connection need to set theresolution on the product. Actually our BD can support 480i ~1080p but

some TVs can just support specific resolution so in order to match resolu-tion between TV & BD P user can choose AUTO mode at the setup menu.

Is the displayHDCP compliant?

NO

YES

Make sure the display is HDCP compliant when using a DVI orHDMI connection. A lack of HDCP compliancy on the display may

cause an invalid format or format not supported message to appear.It can also cause a copy protection OSD to appear.

Has the customer tried thedevice on another display?

NO

YES

Ask the customer to connect the device to another display.If the device starts working, then the problem may be the original display.

The customer will need to troubleshoot the display. If the device

still does not work, then the problem may be the device or the cable.

Has the customer triedanother cable?

NOAsk the customer to replace the cable between the device and display.

If the problem is corrected, then the problem was with the cable.If the problem continues, then the device is the problem.

Set up service according to in warranty or out of warranty procedures.

2-5. Invalid Format or Format Not Supported

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3. PICTURE COLOR 3-1. No Color The video displays no color and only shows in black and white.


NO

YES


Tighten any loose cables. Make sure the customer is not connecting aBD to VCR. Copy protection can distort the picture on older VCR models.


NO

YES

Make sure the TV is on the correct input according to theconnections in use. Video when using composite, or component.


Does color appear whenwatching multiple discs?

NO

YES

One disc displaying the issue is a problem with the disc.Make sure the discs the customer is using are compatible with the

BD by checking playable discs in the owners manual.Multiple discs displaying the problem indicates a problem with

the BD player.

Does color appear whenwatching a TV program?

NO

YES

If the cable or satellite programming is connected throughanother input and the customer does not get color, the customer has a

problem with his television. If a TV program does have the color,the problem may be the BD player, the cables being used,

or the TV itself.

Does color appearwhen the BD is


NO

YES

Connect the BD to another TV and play a disc. Good color duringdisc play back indicates a problem with the first TV. Please refer to the

owners manual for instructions on how to connect the BD to a TV.If the BD has a problem on the second TV, then see service chart for

service information.



also cause video problems. Test the cable with another device tothe TV to also determine if the TV is bad. If the BD is the problem,


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NO

YES

Determine what cables the customer is using to connect the BD tothe TV and if connected properly. Refer to OM for connections.

Tighten any loose cables. Make sure the customer is not connecting aBD to VCR. Copy protection can distort the picture on older VCR models.


NO

YES

Make sure the TV is on the correct input according to theconnections in use. Video when using composite, or component.


Is color finewhen watching multiple discs?

NO

YES

One disc displaying the issue is a problem with the disc.Make sure the discs the customer is using are compatible with the BD

by checking playable discs in the owners manual. Multiple discsdisplaying the problem indicates a problem with the BD player.

Is color finewhen watching a TV program?

NO

YES

If the cable or satellite programming is connected through anotherinput and the customer does not get color, the customer has a problem with

his television. If a TV program does have the color, the problem

may be the BD player, the cables being used, or the TV itself.

Is color fine when the BD isconnected to another TV?

NO

YES

Connect the BD to another TV and play a disc. Good color duringdisc play back indicates a problem with the first TV. Please refer to the

owners manual for instructions on how to connect the BD to a TV.If the BD has a problem on the second TV, then see service

chart for service information.


NOHave the customer try another set of cables. A bad cable

can also cause video problems. Test the cable with another device tothe TV to also determine if the TV is bad. If the BD is the problem,


3-2. Poor Color The color is poor. Examples would be washed out colors, colors bleeding into one another, or a solid tint to

a screen.

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4. NOISE/AUDIO PROBLEMS 4-1. No Audio The customer is not able to get audio.


NO

YES

Determine what cables the customer is using to connect the BDto the TV and if connected properly. Refer to OM for connections.Tighten any loose cables. Make sure the customer has audio cables

connected if using an HDMI to DVI adapter or video-only cables(DVI, component, etc).

Is the customerable to see video?

NO

YES

Make sure the customer has not routed videoand audio to separate inputs.

Does issue occur onmore than one disc?

NO

YES

Problem occurring on one disc indicates a problem with the disc.Problem occurring on multiple discs could indicate a lens cleaner

is needed. The customer can purchase a lens cleaner at anyelectronics retailer.

Problem occur whenwatching TV program?

NO

YES

No audio from a TV program on a different channel or input meansthere is a problem with the television. If a TV program does have

the audio, the problem may be the BD player, the cables being used,

or the TV itself.

Does the problem occurwhen BD is connected to

another TV?

NO

YES

Audio is fine when the BD is connected to another TVindicates the problem is with the television. Refer to

the owners manual for assistance with connecting BD to another TV.



cause audio problems. Test the cable with another device tothe TV to also determine if the TV is bad. If BD is problem,


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What cables is the customerusing to connect the DVD?

NO

YES

Determine what cables the customer is using to connect the BDto the TV and if connected properly. Refer to OM for connections.Tighten any loose cables. Make sure the customer has audio

cables connected if using an HDMI to DVI adapter or video-only cables(DVI, component, etc).

Is the customerable to see video?

NO

YES

Make sure the customer has not routedvideo and audio to separate inputs.

Does issue occur onmore than one disc?

NO

YES

Problem occurring on one disc indicates a problem with the disc.Problem occurring on multiple discs could indicate a lens cleaner

is needed. The customer can purchase a lens cleaner at anyelectronics retailer.

Problem occur whenwatching TV program?

NO

YES

Distorted audio from a TV program on a different channel orinput means there is a problem with the television. If a TV programdoes have the audio, the problem may be the BD player, the cables

being used, or the TV itself.

Does the problem occurwhen DVD is connected to

another TV?

NO

YES

Audio is fine when the BD is connected to another TVindicates the problem is with the television. Refer to the owners manual

for assistance with connecting BD to another TV.



also cause audio problems. Test the cable with another device tothe TV to also determine if the TV is bad. If BD is problem,


4-2. Distorted Audio The audio sounds muffled, scratchy, or the audio skips.

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4-3. Humming/Clicking Noise The unit is making a humming noise or a clicking noise.

Does the noise onlyhappen when a disc

is playing?

NO

YES

BDs make a slight hum when playing discs.A clicking noise or a noise interfering with audio may indicate a problem.Try multiple discs. Multiple discs with the same issue means the

BD may need service or be professionally cleaned.Check BD service for service instructions.

Does the noise happenwhen the BD is turned on?

NOCheck to see if a disc is inserted into the BD and eject the disc.

A humming or clicking noise when the disc is not insertedmay be a cooling fan. Check OM to see if cooling fan is present.

If not, unit will need service. See BD service for service instructions.

Has the customer triedmultiple tapes and discs?

NO

YES

YES

If the issue only shows up on one disc, then the problem iswith that disc. Have the customer try multiple tapes or discs.

If the issue happens on multiple discs and tapes,then ask the customer to try a lens or a head cleaner.

Has the customerconnected to another TV?

NOAsk the customer to connect the product to another TV.

If the issue persists, try another set of cables. If the issue still persists,then the issue is with the unit. The unit will need service.

Arrange service following proper procedure.

How are the cables routed?NO

Make sure cables are routed properly.Make sure audio and video cables are routed to the same source

(if possible). Routed audio and video to separate productscan cause a bit of a delay between the devices as not all devices

will process audio and video signals at the same speed.

4-4. Audio/Video Out of Synch The audio and video do not match up. People look to be talking, but their voices are delayed by a few seconds.

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5. MISCELLANEOUS 5-1. No Power The unit will not turn on.

Is the unit plugged in? NO

YES

Is the unit plugged in?

Does the unit turn onwhen the power buttonis pressed on the unit?

NO

YES

See if the unit will turn on when the power button the unit is pressed.If the unit turns on, then troubleshoot the remote control using

the Remote Control Not Working call flow.

Is the unit plugged intoa surge protector?NO

YES

Make sure the surge protector is plugged into a wall outlet.Also make sure the surge protector is turned on or does not

need to be reset due to a recent surge.

Does the unit work whenplugged into another outlet?

NO

YES

Test the unit in another outlet. If the unit works,then the problem is the outlet where the unit was connected.If the issue is the BD, then set up service for BD according to

BD service guide.

Have there been any lightningstrikes or power outages?

NO If BD failed due to lightning strike or a power surge,this is not covered by warranty. Follow guidelinesfor service for a BD out of warranty.

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Is the disc inserted intothe BD player properly?

NO

YES

Make sure the disc has been inserted into the BD player properly.The player can not read a disc inserted into the unit upside down.

What type of disc isthe customer using?

NO

YES

Determine the type of disc the customer is not able to play.If the customer is using a store-bought movie BD,

then please skip the next three questions.If its a recorded disc, move onto the next question.

Did the customer burnthis disc in a DVD recorder?

NO

YES

Make sure the customer finalized the disc in the DVD recorder.Make sure the type of disc the customer is using is compatible

with the BD player. If the customer initialized a DVD-RW in VR mode,make sure the owners manual has the RW logo to show

compatibility for the VR format.

Did the customer burnthe disc in a computer?

NO

YES

Make sure the customer burned a compatible format(such as VCD, SVCD, or DivX). Make sure the file meets the

specifications required for the player to play the disc. Check the ownersmanual for specifications. Disc may still not be compatible.Refer customer to section of OM regarding burned discs.

Has the customer triedmultiple discs?

NOOne disc with the problem is a problem with the disc.

BD players can play scratched or dirty BDs (DVDs) and not have anyissues during playback. Multiple discs with the issue can meanthe lens on the BD player needs to be cleaned. Recommend a

lens cleaner. Service BD if lens cleaner was used.

5-2. Disc Error The unit displays disc error when a disc is inserted into the BD player.

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5-3. Unit Locks Up Unit does not respond to any commands.

Does the unit respond tothe buttons on the unit?

NO

YES

If the unit will turn on or off with the button on the unit,troubleshoot the remote control. Please refer to

Remote Control Not Working call flow.

Has the customerreset the unit?

NOIf the unit does no respond to any buttons,

then reset the unit by unplugging it for 15 to 30 seconds.If the unit does not respond after the reset,

arrange for service on the BD.

Does the open/close buttonon the unit work?

NO

YES

Press the open/close button on the unit. If the disc ejects,troubleshoot the remote using the Remote Control

not working call flow.

Has the customer reset the unit?

NO Ask the customer to reset the unit by unplugging the unitfrom the electrical outlet for 15 to 30 seconds. If the disc

remains stuck in the unit after the reset, the unit will need service.

5-4. Disc Stuck A BD disc is stuck in the unit.

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NO

YES



NO

YES

Determine the type of disc the customer is not able to play.If the customer is using a store-bought BD, then please skip the

next three questions. If its a recorded disc,move onto the next question.

Did the customer burn thisdisc in a DVD recorder?

NO

YES





NO

YES


specifications required for the player to play the disc.Check the owners manual for specifications. Disc may still not be

compatible. Refer customer to section of OM regarding burned discs.



BD players can play scratched or dirty BDs (DVD s) and not have anyissues during playback. Multiple discs with the issue can mean the lens on

the BD player needs to be cleaned. Recommend a lens cleaner.Service BD if lens cleaner was used.

5-6. Will Not Play Disc The unit will not play a disc when a disc is inserted into the player.

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NO

YES



NO

YES

Determine the type of disc the customer is not able to play.If the customer is using a store-bought BD,

then please skip the next three questions. If its a recorded disc,move onto the next question.

Did the customer burn thisdisc in a DVD recorder?

NO

YES





NO

YES


specifications required for the player to play the disc. Check the ownersmanual for specifications. Disc may still not be compatible.Refer customer to section of OM regarding burned discs.



BD players can play scratched or dirty BDs (DVD s) and not have anyissues during playback. Multiple discs with the issue can mean the lens on

the BD player needs to be cleaned. Recommend a lens cleaner. Service BD if lens cleaner was used.

5-7. Disc Freezes or Skips The audio and video freeze and skip during play back of a BD or DVD disc.

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Is the moviewide screen or

full screen?

NO

YES

A full screen movie played on a wide screen TV will have barson the left and right side of the TV. The customer needs to

make sure they choose the appropriate type of moviethey want to view.

What is the aspectratio of the DVD disc

being played?

NO

YES

If the aspect ratio is 1.33:1 then the movie is set up for full screenviewing. Bars will appear on the left and right side of the screenif the TV is wide screen. If the aspect ratio is 1.85:1 or 2.35:1,then there will be bars on the top and bottom as that ratio is

bigger than widescreen TVs (1.78:1).

What is the aspectratio of the BD player

set at?

NO

YES

Make sure the BD player aspect ratio is set tothe appropriate setting, depending on the aspect ratio of the TV.

If the customer chose 4:3 Letterbox, then bars will appear on the topand bottom. The customer can choose the panscan setting to

get rid of the bars.

What is the resolutionof the BD player set at?

NO

YES

Try changing the resolution to 480i/p. 720i/p, 1080iand 1080p resolution require a widescreen aspect ratio

which means bars will be placed on the left and right side

for full screen movies.

What is the aspect ratio ofthe television set at?

NOMake sure the aspect of the television is set appropriately.

If the aspect ratio of the television is set at 4:3 when the TVis wide screen, then a wide screen movie will show up as

letterbox with bars on the top and bottom and bars on the sides.

5-10. Aspect Ratio The customer has bars on the top and bottom of the screen, the left and right of the screen, or both.

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Is the disccurrently playing?

NO

YES

Ask the customer to press stop to stop the disc from playing.Ask the customer to press the resolution button to change the resolution.

The BD player will not change resolutions while the disc is playing.

Is the customer usingcomponent (red, blue,

and green) cables?

NO

YES

Copy protection Discs cant be up-convertedabove 480pwhen using component cables. The component output does not have

HDCP (high bandwidth digital content protection) compliancywhich causes the BD player to switch from 720p or 1080i to 480p.

Is the customer usingany sort of adapter cable?

NO

YES

RGB to DVI or RGB to HDMI adapters will not upconvert.RGB outputs and inputs are not HDCP compliant. If the customer

sees an error message about HDCP, this is the issue.Copy protected discs will not upconvert

when HDCP is not found on the input or output.

Is the customer usingan HDMI or DVI cable?

NO

YES

Regular discs can be converted to 1080p just through the HDMI output. The TV must have HDC P compliancy on the HDMI input.

The display has to accept the resolution

(480i/p, 720i/p, 1080i, or 1080p).

Is the customer using anHDMI to DVI cable?

NO

YES

Some movie companies will not allow their discs to upconvertpast 480p. If only one disc poses a problem, then the issue is the disc.

The customer will need to try multiple discs.


NOOne disc not upconverting means the disc may not upconvert.

Some movie companies will not allow their discs to upconvert.If multiple discs display the issue, remove the disc and change

the resolution with no disc in the unit.If resolution will not change, the unit needs service.

5-11. My Unit Wont be up-converted The customer has a problem with getting the unit to change resolutions to 480i/p, 720i/p, 1080i, or 1080p.

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6. BLU-RAY PLAYER 6-1. Slow Loading Times for BDs

Why does it take so longto load my BDs?

NO When a customer switches from one disc to another, the lens have to be changed what causes the delay.

BLURAY require different lasers to read the discs.

Why does it takeso long to boot my BD?

NO The booting times for the BD is under 15 seconds.When the set is booted,

it takes a little long time to loading the OS program.

6-2. Booting Times

6-3. Ethernet Port

What is the purpose ofthe ethernet port on

the BD Player?

NO

NO

This is used for the unit to access a network dealing with interactive BDmovie menu. BD Player can support BD2.0 so that network function is

active in the BD disc. Also, BD Player can support VOD service such asYoutube, Picasa, Accuweather. (USA, CIS, South America only)

Why cant download the itemthrough the network?

Make sure the customer insert the LAN cable into the Ethernet jack.Make sure the network is active.

If it is active, the disc may have a problem.If not active, see the network section of OM.

Is there a firmware updateavailable for the BD Player?

NO

Yes, firmware updates are available at http://us.lgservice.comthat address some playback issues with movies.

Go to device drivers and click on DVD&VIDEO&SET-TOP.The firmware updates are available there.

Advise the customer to download the firmware and unzip the file.Also, firmware updates are done by network.

Select Home Menu -> Setup -> Others -> Software update menu.

6-4. Firmware Update Availability

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7. YouTube 7-1. Frequent buffering happens while playing videos. Network Condition Meter indicate current network speed between BD Player and YouTube stream server.

To play videos without buffering, Network Condition Meter should have more than 3 Bars.

Do you have adequate broadbandconnection speed?

NO

YES

We recommend a minimum connection speed of 1.5Mbps. For the bestquality picture, a connection speed of 4.0Mbps is required.

Do not have any Other onlineactivity on your network?

NO

YES

Your connection may be affected by other activity on your network, such asonline gaming, file sharing or other video streaming.

Test your bandwidthNO

You can test your bandwidth at one of these sites:http://www.speakeasy.net/speedtest/http://www.speedtest.net/

If you are getting less bandwidth than expected, you should contact yourISP to troubleshoot.

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8. AccuWeather 8-1. The Request cannot be processed

Is The Request cannot beprocessed. message displayed?

There may be network congestions.

Please retry it 2 or 3 more times.If it is Home menu, no data will be displayed.

If it is Favorite City menu, it will return to the favorite city list.

Although you did retry 2~3 times,same symptom occurs?

Network is not setup correctly.Please check the network status.

NO

NO

YES

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Dont have a PicasaWeb Albums account?

What is No Image?

When does theThere may be

network congestionpop-up appears?

Visit piccasaweb.google.comand click the Create an Account >> button.You can get 1 GB of free storage which can store about 4,000 pictures.

No Image icon can appear on thumbnail list or full picture screen.No Image means that the meta data of the image is stillat the database server but the content has been removed

because it violates Googles Terms of Service.

There may be network congestion pop-up appearswhen the network is too slow to service the Picasa Web Albums.

We try the service API and image requestuntil it successes but if every request fails for 1 minutes

then we show the pop-up and return to the Netcast home menu.

NO

NO

NO

9. PICASA 9-1. Create Picasa Web Albums Account

9-2. No Image Icon

9-3. Network Congestion

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ONE POINT REPAIR GUIDE

1. NO POWER PROBLEM No power problem occurs when you power on the unit.

1-1. Fuse & Bridge dode 1-1-1. Solution Replace F901, BD901 on SMPS board.

1-1-2. How to troubleshoot (Countermeasure) 1) Look at the physical of fuse F901. 2) Check the bridge diode BD901.

1-1-3. Service hint (Any picture / Remark)

< BD901 >SMPS board top view

< F901 >Can look at physical condition

Vcc No PowerD955 is Defective

Switching ErrorPC900, IC952 are Defective

12 V No PowerIC951 is Defective

3.7 VA No PowerD954 is Defective


13 VA No PowerD953 is Defective

No AMP PpwerPC901, Q900 are Defective

S/W ErrorIC901, IC902 are Defective

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No power problem occurs when you power on the unit.

1-2. NO 13 VA, 6.3 VA 1-2-1. Solution

Replace D950, D951, D952, D953, D954, IC901.

1-2-2. How to troubleshoot (Countermeasure) Case 1) FLD Abnormal: Check D950, D951 and replace it. Case 2) 6.3 VA Abnormal: Check D952 and replace it. Case 3) 12 V Abnormal: Check D953, IC951 and replace it. Case 4) 3.7 VA Abnormal: Check D954 and replace it. Case 5) All Voltage Abnormal: Check IC901 and replace it.


< SMPS board top view >

Case 1(D950, D951)

Case 5(IC901)

Case 2(D952)

Case 3(D953, IC951)

Case 4(D954)

BD901 is Defective

No PowerF901 is Defective


, ,







is e ecive

S/W ErrorIC901, IC902 are Defective

Case 1(D950, D951)

Case 5(IC901)

Case 2(D952)

Case 3(D953, IC951)

Case 4(D954)

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2. AMP POWER AMP Vcc doesnt work. (abnormal Sound)

2-1. Solution Case 1) 30.5 V Abnormal : Replace PC901 or PC902 on SMPS Board. Case 2) 30.5 V Abnormal : Replace IC902 or D955 on SMPS Board.

2-2. Service hint (Any picture / Remark)

< SMPS board top view >

Case 1(PC901,PC902)

CAUTION: Danger if fuse is incorrectly replaced.

Replace only with the type identical to fuse ratingand(or) model name described in main label. Warning

Parts that are shaded are critical withres ectto riskof fireorelectricalshock







S/W ErrorIC901, IC902 are Defective Case 1

(PC901)

Case 1(PC902)

Case 2(D955)

Case 2(IC902)

Case 2(IC902,

D955)

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3. THE LAYOUT OF MAIN BOARD

< MAIN board bottom view >

< MAIN board top view >

D101

JK806

JK804

IC301

JK803JK802

JK801X501

IC501

IC603 IC401

IC302

IC101

IC601IC602

IC604

IC405

IC305

IC303IC306

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4. NO POWER PROBLEM (3.3 VA) No power problem occurs when you power on the unit.

4-1. D101 (NO 3.3 VA) 4-1-1. Solution Replace D101 on MAIN board.

4-1-2. How to troubleshoot (Countermeasure) 1) Please Check 3.7 VA (yellow signal). 2) If 3.7 VA is abnormal, please check SMPS board. 3) If 3.7 VA is OK, but 3.3 VA is abnormal. replace D101. 4) If 3.7 VA and 3.3 VA (at D101) is ok, check connection status with CN101 (MAIN board) and

CN907 (TIMER board). 5) If 3.7 VA, 3.3 VA and connection status is ok, replace IC101.



IC101

D101

A:3.7 VA

B:3.3 VA

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When you turn on your set, it will blank / no message or PLEASE WAIT display on front panel,and it will not boot-up.

5-2. IC302 (NO 1.5 V) 5-2-1. Solution Replace IC302 on MAIN board.

5-2-2. How to troubleshoot (Countermeasure) 1) Please check 1.5 V of C374 on MAIN board. 2) If 1.5V voltage doesnt come out,

- Check IC302 pin2 (VCC 13 V).If there is no 13 V, please check 13 VA from SMPS board.(go to previous page to check it)

3) If V input (pin2) of IC302 is 13 V signal, First of all check the P_CON_1.5V is high (IC302 pin6) and if itshigh, check L306, R307,C374, C331, C327 and if theres no defective component, please replace IC302.

4) If PWR_CTRL or P_CON_1.5V isnt high, you may need to replace IC101. 5) After changing it, if the set is still not booting :

- Check 1.15 V / 3.3 V / 3.3 VA is normal. (Please refer to other sections of this guide)- Check Crystal X501 refer to item 5-4.- Check NAND Flash IC (IC604) refer to item 5-5.- Check DDR IC (IC601 ~ IC603) refer to item 5-6.- Check MT8555D IC (IC501) refer to item 5-7.



C374 IC302

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When you turn on your set, it will display PLEASE WAIT on front panel, and it will not boot-upnormally.

5-5. IC604 (NAND FLASH MEMORY) 5-5-1. Solution Replace IC604 on MAIN board.

5-5-2. How to troubleshoot (Countermeasure) 1) Please check physical status of IC604 on your eyes. 2) Check the VCC (3.3 V) of IC604 and if its normal, please replace IC604.

(Please make sure IC604 has proper Program.) 3) After changing it, if the set is still not booting :

- Check DDR IC (IC601 ~ IC603) refer to item 5-6.- Check MT8555D IC (IC501) refer to item 5-7.



IC604

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5-6. IC601 ~ IC603 (DDR3 MEMORY) 5-6-1. Solution Replace IC601 ~ IC603 on MAIN board.

5-6-2. How to troubleshoot (Countermeasure) 1) Please check 0.75 V of DDR2_0_VREF (at C524).

Please check 1.5 V at the point of R567.If 1.5 V is ok at R567 and 0.75 V is abnormal at C524, then replace R567, R568.

2) If it doesnt work even though IC301, IC302, IC303 are no problem,IC601, IC602, IC603 (DDR memory) could have problem.

3) After changing it, if the set is still not booting :- Check MT8555D IC (IC501) refer to item 5-7.- Check MAIN board refer to item 5-8.




IC603

IC501

IC601IC602

DDR3_VREF

R567

C524

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5-8. MAIN Board 5-8-1. Solution Replace MAIN board.

5-8-2. How to troubleshoot (Countermeasure) 1) Please remove IC501 and IC601 ~ IC603, and then check the Impedance between each signal

(DATA, ADDRESS, and so on.) 2) If there is some Impedance (a few ohm or infinite ohm) especially power source Trace,

PCB via might be broken. Youd better change MAIN board.



IC603

IC501

IC601IC602

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6. WIRED NETWORK CONNECTION ERROR When you connect AccuWeahter, You-tube or Picasa through the wired LAN, the no connection

message appears.

6-1. JK801 (ETHERNET JACK) 6-1-1. Solution Replace JK801 on MAIN board.

6-1-2. How to troubleshoot (Countermeasure) 1) Check you internet connection. Make sure it connect properly to modem or router. 2) If internet connection OK, please check the Ethernet Jack (JK801). 3) If there is soldering problem, please re-soldering pin JK801. 4) If after re-soldering problem still occurs, replace JK801. 5) If problem still occurs after change JK801. check MT8555D IC (IC501). Refer to item 5-7.


< MAIN board top view > < MAIN board bottom view >

JK801 JK801

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8. THE LAYOUT OF AMP BOARD

< AMP board bottom view >

< AMP board top view >

A C N 6 0 2

A I C 6 0 3

A I C 7 0 1

A C N 6 0 1

A I C 7 0 2

A I C

7 0 3

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9. NO SPEAKER OUTPUT When unit is connected to Speaker using speaker cable, no speaker output.

9-1. AMP BOARD

9-1-1. Solution Replace AMP board.

9-1-2. How to troubleshoot (Countermeasure) 1) Check Voltage at ACN602.

- If 30 V,12 V voltage doesnt come out, re-soldering in ACN602. 2) Check Voltage at ACN601 pin12, 13.

- if 3.3 V voltage doesnt come out, check IC303 in MAIN PCB. 3) Check the AMP_SD signal of pin16 at ACN601.

- If this pin is low, replace AIC701 or AIC702 or AIC703. 4) If problem still occurs, change AMP board.


< AMP board bottom view >

30 V

12V

ACN601

A M P

_ S D s i g n a l

3 . 3

V o

u t p u

t

< AMP board top view >

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ELECTRICAL TROUBLESHOOTING GUIDE

No 3.7 VA

Is the F901 normal? Replace F901(same fuse).

YES

YES

NO

Is TH901 normal ?

Is BD901 normal?

Is the Vcc(13 V ~ 27 V) supplied to IC902

pin5?

Replace TH901.

Replace BD901.

Is D911 normal?

Check or replace D911.

YES

YES

YES YES

NO

NO

NO

Power line of MAIN PCB is short.

1. POWER SUPPLY ON SMPS BOARD

No 12 V

YES

YES

YES

Check D953 & C956.

Check or replace IC951.Check solderingconnector CN902.

Is the Vccsupplied to IC951

pin1?

NO

NOCheck voltage on IC501.

Checksignal IC951

pin?

Is there3.3 V at IC951

pin4?

NO

YES

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No 3.3 V

No 5 V

Is theVcc 3.7 V supplied to IC303

pin2?

Is the6.3 VA supplied to IC305, IC306

pin2?

Is thereH signal at IC305, IC306

pin1?

Check 3.7 VA on SMPS board.

Check 6.3 VA on SMPS Board.

Check PWR_CTRL linefrom IC101(pin61).

YES

YES

YES

YES

YES

NO

NO

NO

Is thereH signal at IC303

pin1?

Check P_CON_3.3 V linefrom IC101(pin58).

Check IC303 and replace.

Check IC305, IC306 and Replace.

YES

NO

2. POWER SUPPLY ON MAIN BOARD

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No 1.5 V

No 1.15 V

Is the13 VA supplied to IC302

pin2?

Is the13 VA supplied to IC301

pin2?

Check 13 VA on SMPS board.

Check 13 VA on SMPS board.

YES

YES

YES

YES

NO

NO


pin6?


pin6?

Check the P_CON_1.5 V linefrom IC101(pin59).

Check the P_CON_1.1V linefrom IC101(pin60).



YES

YES

NO

NO

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3. SYSTEM PART

Power on

YES

MAIN Board

TIMER Board

Check D101, IC303and SMPS board.

Check D101 & SMPS.

WELCOMEdisplay on FLD

OK?

IC1013.3 VA, 3.3 V

OK?

3.3 V,FL(+), FL(-)

OK?

NO NO

NO

YES

Replace X101.

Check IC101 & CN907.

Replace IC901(FLD driver).

X10120.000 MHz

OK?

6315_RX,6315_CLK, 6315_STB

OK ?

IC901Data output to FLD

OK?

NO

NO

NO

YES

YES

YES

YES

YES

3A

Replace IC101UPD78F1164.

Check DIS901.

3B

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3B

System part OK.

Check IC301, IC302, IC303, and SMPS board.

Proper displaycable connect.

Replace IC604(NAND flash).

LG Logodisplay on monitor

OK?

LG Logodisplay on monitor

OK?

3A

IC501,Vcc 3.3 V, 1.1 V

1.5 V OK?

DisplayCable connection

OK ?

SignalNF_ALE, NF_CLE

OK?

NO

NO

NO

NO

NO

YES

YES

YES

YES

YES

Check IC302and SMPS board.

Replace X501.

Replace IC501 MT8555Dor IC601, IC602, IC603.

IC601,IC602, IC603 Vcc

1.5 V OK?

X50127.000 MHz

OK?

NO

NO

YES

YES

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4. NO CVBS VIDEO OUTPUT

No CVBS video on display

YES

YES

YES

YES

Check IC501 MT8555D Vccor replace IC501 MT8555D.

Replace L803.

Replace D804.Check JK803and RCA cable connection.

Is thereCVBS signal on

L803?

Is thereCVBS Signal out of

L803?

NO

NO

NOCheck IC303.D804, 3.3 V OK ?

Is theresignal on

D804?

NO

YES

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NO

NO

BD/CD/DVD discor USB play Optical function

Check IC501 & IC502or replace.

Check IC200or replace.

IC401pin24, 26, 27, 29, 30

I2S input signalok?

IC200pin41, 42, 43, 44 I2S

signal OK?

NO

NO

NO

NO



Check JK804or replace.

Check AIC603or Replace.

Check AMP IC (AIC701,AIC702, AIC703) output

stage and AJK701.

IC401pin40, 54, 52, 51,49,48

I2S output signal

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