Manual de sevicio LG CM8420
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Mini Hi-Fi SystemSERVICE MANUAL
MODEL: CM8420 (CM8420, CMS8520F/W)CAUTION
BEFORE SERVICING THE UNIT, READ THE “SAFETY PRECAUTIONS”IN THIS MANUAL.
M ODE L :
C M
8 4 2 0 ( C M
8 4 2 0 , C M
S 8 5 2 0 F / W )
S E RV I C E MAN
UAL
3102,HCRAM76015220NFA:ON / P
Website http://biz.lgservice.comInternal Use Only
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CONTENTS
SECTION 1 ........GENERALSECTION 2 ........CABINET & MAIN CHASSISSECTION 3 ........ELECTRICALSECTION 4 ........REPLACEMENT PARTS LIST
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SECTION 1
SUMMARY
CONTENTS
SERVICING PRECAUTIONS ................................................................................................................... 1-3
ESD PRECAUTIONS .................................................................................................................................. 1-5
HIDDEN KEY MODE ................................................................................................................................... 1-6
SERVICE INFORMATION FOR EEPROM .......................................................................................... 1-7
PROGRAM DOWNLOAD GUIDE ........................................................................................................... 1-81. AUDIO PROGRAM ................................................................................................................................... 1-82. CD PROGRAM ......................................................................................................................................... 1-93. BEAT BOX PROGRAM........................................................................................................................... 1-104. EQ PROGRAM ....................................................................................................................................... 1-11
SPECIFICATIONS 1-12
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NOTES REGARDING HANDLING OF THE PICK-UP1. Notes for transport and storage
1) The pick-up should always be left in its conductive bag until immediately prior to use.2) The pick-up should never be subjected to external pressure or impact.
2. Repair notes1) The pick-up incorporates a strong magnet, and so should never be brought close to magnetic materials.2) The pick-up should always be handled correctly and carefully, taking care to avoid external pressure and
impact. If it is subjected to strong pressure or impact, the result may be an operational malfunction and/ordamage to the printed-circuit board.
3) Each and every pick-up is already individually adjusted to a high degree of precision, and for that reasonthe adjustment point and installation screws should absolutely never be touched.
4) Laser beams may damage the eyes!Absolutely never permit laser beams to enter the eyes!Also NEVER switch ON the power to the laser output part (lens, etc.) of the pick-up if it is damaged.
Storage in conductive bag Drop impact
NEVER look directly at the laser beam, and don’t allowcontact with fingers or other exposed skin.
SERVICING PRECAUTIONS
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NOTES REGARDING COMPACT DISC PLAYER REPAIRS1. Preparations1) Compact disc players incorporate a great many ICs as well as the pick-up (laser diode). These components
are sensitive to, and easily affected by, static electricity. If such static electricity is high voltage, componentscan be damaged, and for that reason components should be handled with care.
2) The pick-up is composed of many optical components and other high-precision components. Care must betaken, therefore, to avoid repair or storage where the temperature or humidity is high, where strong magnet-ism is present, or where there is excessive dust.
2. Notes for repair
1) Before replacing a component part, first disconnect the power supply lead wire from the unit2) All equipment, measuring instruments and tools must be grounded.3) The workbench should be covered with a conductive sheet and grounded.
When removing the laser pick-up from its conductive bag, do not place the pick-up on the bag. (This isbecause there is the possibility of damage by static electricity.)
4) To prevent AC leakage, the metal part of the soldering iron should be grounded.5) Workers should be grounded by an armband (1 M Ω)6) Care should be taken not to permit the laser pick-up to come in contact with clothing, in order to prevent stat-
ic electricity changes in the clothing to escape from the armband.
7) The laser beam from the pick-up should NEVER be directly facing the eyes or bare skin.
Resistor(1 M Ω)
Armband
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Electrostatically Sensitive Devices (ESD)Some semiconductor (solid state) devices can be damaged easily by static electricity. Such componentscommonly are called Electrostatically Sensitive Devices (ESD). Examples of typical ESD devices are integratedcircuits and some field-effect transistors and semiconductor chip components. The following techniques shouldbe used to help reduce the incidence of component damage caused by static electricity.
1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain offany electrostatic charge on your body by touching a known earth ground. Alternatively, obtain and wear acommercially available discharging wrist strap device, which should be removed for potential shock reasonsprior to applying power to the unit under test.
2. After removing an electrical assembly equipped with ESD devices, place the assembly on a conductive surfacesuch as aluminum foil, to prevent electrostatic charge buildup or exposure of the assembly.3. Use only a grounded-tip soldering iron to solder or unsolder ESD devices. 4. Use only an anti-static solder removal device. Some solder removal devices not classified as "anti-static" can generate electrical charges sufficient to damage ESD devices.5. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ESD
devices.6. Do not remove a replacement ESD device from its protective package until immediately before you are
ready to install it. (Most replacement ESD devices are packaged with leads electrically shorted together byconductive foam, aluminum foil or comparable conductive materials).7. Immediately before removing the protective material from the leads of a replacement ESD device, touch the
protective material to the chassis or circuit assembly into which the device will by installed.
CAUTION : BE SURE NO POWER IS APPLIED TO THE CHASSIS OR CIRCUIT, AND OBSERVE ALL OTHERSAFETY PRECAUTIONS.
ESD PRECAUTIONS
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Push both Front key and RCU key to activate it for 5 seconds.
1. Disc Lock On/Off (CD Function Only Active) Front Key : STOP RCU Key : STOP
2. Check Version and Option code Front Key : STOP RCU Key : PLAY/PAUSE You can change [Audio MCU Version CD Controller Version EEPROM Option] by SKIP+/-.
3. Clear EEPROM Front Key : STOP RCU Key : SKIP-
4. Edit EEPROM Front Key : STOP RCU Key : SKIP+
You can change the digit of option by SKIP+/-. You can edit 0~f by REPEAT or PLAY/PAUSE key.
5. Bluetooth DUT Front Key : STOP RCU Key : PROGRAM Bluetooth model only
HIDDEN KEY MODE
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POWER ON
FLD no disc status
Remote control ‘ ’ + Front ‘STOP’push at a time for 5 seconds
FLD ‘OP-0….
Move to appropriate position andmake changes with remote control.
( , , / ■ , REPEAT )
Press STOP key
NAME
OP0 OP1 OP2 OP3
OP4 OP5 OP6 OP7 OP8 OP9
DETECT NEW EEPROM(OPTION EDIT SCREEN)
HEX
05000000000980022001
SERVICE INFORMATION FOR EEPROM
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3. BEAT BOX PROGRAM
Download program file name must be BEAT_BIN_DATE_00.BIN If security program (Water Wall) is activated on your PC, you must save the file to the usb storagedevice and disable the security software, then download the file to your set.
Caution : When downloading the file, you should neither unplug the usb device, change to the otherfunction, nor power off the device. Usb device must be unplugged when the downloadingprocess is completed.
ON VFD DISPLAY SCREEN
NO USB
↓ ← Insert usb device at usb functionREAD
↓FIRMWARE
↓
FINISH
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4. EQ PROGRAM
Download program file name must be EQ_PRG_CM8520_CMS8520_201201033_7009.BIN If security program (Water Wall) is activated on your PC, you must save the file to the usb storagedevice and disable the security software, then download the file to your set.
Caution : When downloading the file, you should neither unplug the usb device, change to the otherfunction, nor power off the device. Usb device must be unplugged when the downloadingprocess is completed.
ON VFD DISPLAY SCREEN
NO USB
↓ ← Insert usb device at usb functionREAD
↓EQ DOWNLOAD
↓
UPDATED
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SPECIFICATIONS• GENERAL
Power requirements Refer to main labelPower consumption Refer to main labelDimensions (W x H x D) 285 x 395 x 381Net Weight (Approx.) 6.2 kgOperating temperature 5 °C to 35 °C (41 °F to 95 °F)Operating humidity 5 % to 90 %Bus Power Supply USB DC 5 V 500 mA
• INPUTS
AUX IN 2.0 Vrms (1 kHz, 0 dB), 600Ω
, RCA jack (L, R) x 1PORT. IN 1.2 Vrms (3.5 mm stereo jack)
• TUNERFM Tuning Range 87.5 to 108.0 MHz or 87.50 to 108.00 MHzAM Tuning Range 522 to 1 620 kHz, 520 to 1 710 kHz or 522 to 1 710 kHz
AMPLIFIERStereo mode 310 W + 310 W (4 Ω at 1 kHz, THD 10%)
Surround mode Front 310 W + 310 W (4Ω
at 1 kHz, THD 10 %) Subwoofer 310 W + 310 W (4 Ω at 1 kHz, THD 10 %)
• CDFrequency Response 40 to 20 000 HzSignal-to-noise ratio 75 dBDynamic range 80 dB
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SECTION 2
CABINET & MAIN CHASSIS
CONTENTS
DISASSEMBLY AND ASSEMBLY FOR MECHANISM DECK (DVM-H1803) ........................ 2-21. ORDER OF DISASSEMBLY FOR MECHANISM DECK .......................................................................... 2-22. ORDER OF ASSEMBLY FOR MECHANISM DECK ................................................................................ 2-6
EXPLODED VIEWS ................................................................................................................................... 2-111. CABINET AND MAIN FRAME SECTION (CM8420) .............................................................................. 2-112. MECHANISM DECK SECTION (DVM-H1803) ....................................................................................... 2-13
3. PACKING ACCESSORY SECTION ....................................................................................................... 2-154. SPEAKER SECTION .............................................................................................................................. 2-16
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DISASSEMBLY AND ASSEMBLY FOR MECHANISM DECK (DVM-H181. ORDER OF DISASSEMBLY FOR MECHANISM DECK
Figure 1
1) Disassemble the Cover Guide Disc.
2
2) Disassemble the Loading FFC from the Main PCBAssy.Turn the Gear in OPEN direction as shown in Figure 2to take out the Tray Loading Assy in 3 direction.
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ORDER OF DISASSEMBLY FOR MECHANISM DECK
2
14) Loosen the screw to pull up and disassemble theTray Disc.
Figure 4
5) Loosen the screw to pull up and disassemble theGear Tray CAM.
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ORDER OF DISASSEMBLY FOR MECHANISM DECK
3
1
2
Figure 7
7) Disassemble the FFC Cable from the Base Main.Disassemble the Base Sled Assy from the Base Main
by referring to Figure.2
1
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ORDER OF DISASSEMBLY FOR MECHANISM DECK
1
2
4
10) Use a solder to remove the Motor Jump Wire fromthe Main PCB Assy and then disassemble the FFCCable.Loosen the screw to disassemble the Main PCB Assy.
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2. ORDER OF ASSEMBLY FOR MECHANISM DECK1) Assemble the Loading Motor Assy to the BaseMain.(When assembling the Motor Assy, use the hook onthe surface of the Base Main to preassemble, and thentighten the screws.)
Figure 1
12
3
2) Set the Guide UD on the Base Main.After setting the part, push it in direction 3.
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3) Set the Gear Loading 1 and Gear Pulley 2 on theBase Main.Hang the belt between the Gear Pulley and Motor Pul-ley.Assemble the Clamp Disc, Clamp Magnet and CoverPlate to the Base Main.
4) After setting the Gear Main 2, Gear Pu Up 3 and GearPu Down 4 on the Base Main, tighten the screws.After assembling the Gear Main, align the location asshown in Figure.
ORDER OF ASSEMBLY FOR MECHANISM DECK
1
2
Figure 3
1
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ORDER OF ASSEMBLY FOR MECHANISM DECK
1
2
2
1
3
1
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2
1
ORDER OF ASSEMBLY FOR MECHANISM DECK
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1
1
ORDER OF ASSEMBLY FOR MECHANISM DECK
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2. MECHANISM DECK SECTION (DVM-H1803)MEMO
A02
A01
153A
035A
151
443
A26
443
443
417
153
159
155
156
177
182
417
417
417
001
002
003173
172
166
167
164 175
440
012
137
012
012
012
010
180
438
035
162
163
165
422
422
442
442
442
442
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801 Owner’s Manual
808 Battery
900 Remote Control
824 AM Loop Antenna
825 FM Wire Antenna
803 Packing
A A A
A A A
3. PACKING ACCESSORY SECTION
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A60LA60R
4. SPEAKER SECTION 4-1. FRONT SPEAKER (CMS8520F)
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MEMO
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SECTION 3 ELECTRICAL
CONTENTS
TRAINING MASTER ................................................................................................................................... 3-21. NO SOUND FROM SPEAKERS ............................................................................................................ 3-22. NO SOUND IN AUX FUNCTION ............................................................................................................ 3-33. NO SOUND IN PORT. IN FUNCTION ................................................................................................... 3-44. NO SOUND IN IPOD FUNCTION .......................................................................................................... 3-55. NO SOUND IN AM/FM FUNCTION ....................................................................................................... 3-66. NO SOUND IN CD FUNCTION .............................................................................................................. 3-77. NO SOUND IN USB FUNCTION ............................................................................................................ 3-98. NO POWER .......................................................................................................................................... 3-10
ONE POINT REPAIR GUIDE ................................................................................................................. 3-111. NO POWER .......................................................................................................................................... 3-112. NO BOOTING WHEN POWER ON THE SET ..................................................................................... 3-133. VFD IS NOT DISPLAYED WHEN POWER ON THE SET ................................................................... 3-144. NO BOOTING IN CD/USB FUNCTION ................................................................................................ 3-155. NO OPERATION OF MD ..................................................................................................................... 3-206. NO SOUND .......................................................................................................................................... 3-26
ELECTRICAL TROUBLESHOOTING GUIDE .................................................................................. 3-341. POWER SUPPLY ON SMPS BOARD ................................................................................................. 3-342. SYSTEM PART .................................................................................................................................... 3-383. NO AUDIO PART ................................................................................................................................. 3-394. DIGITAL AUDIO AMP CHECK ............................................................................................................. 3-445. NO LIGHTING (WOOFER SPEAKER) ................................................................................................. 3-45
WAVEFORMS 3-46
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Are the speaker cables connected correctlybetween the speaker terminals on the unit
and the speakers?
Make sure to connect the cables to each specifiedconnector tightly on the unit.
Connect the woofer cables to the WOOF SYSTEMconnectors on the rear panel.
YES
NO
Does the customer select correctlythe input function he or she wants to listen to?
Make sure to connect some cables like A/V cablesand FM/AM antenna cables.
YES
NO
After pressing FUNCTION,is “CD, USB, AUX, IPOD, AM or FM” displayed?
Make sure to select the desired input functionpressing FUCTION button.
YES
NO
Turn the master volume clockwisefor the volume up.
The volume level LEDs around the master volumewill be turned on more and more
while turning it clockwise for the volume up.
YES
NO
1. NO SOUND FROM SPEAKERS
TRAINING MASTER
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Does the customer select correctlythe AUX function he or her wants to listen to?
Make sure to connect some cablesbetween the AUX IN jacks of the unit
and the Audio output jacks of a external Audio device.
YES
NO
After pressing the FUNCTION, is “AUX” displayed on VFD?
Make sure to select the AUX IN functionpressing the AUX/IPOD/PORT. IN button.
YES
NO
Turn the master volume clockwisefor the volume up.
The volume level LEDs around the master volumewill be turned on more and more
while turning it clockwise for the volume up.
YES
NO
Is there any soundfrom the selected input source?
Refer to a device’s instruction manualand then check if there is sound outputfrom it connecting another audio system
YES
NO
2. NO SOUND IN AUX FUNCTION
TRAINING MASTER
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Does the customer select correctlythe PORT. IN function he or her wants to listen to?
Make sure to connect a cablebetween the PORT. IN jack of the unit and the Audio
output jack of a portable device like a MP3 player.
YES
NO
Is “PORT. IN” displayed on VFD?Make sure to select the PORT. IN functionpressing the AUX/IPOD/PORT. IN button.
YES
NO
Turn the master volume clockwisefor the volume up.
The volume level LEDs around the master volumewill be turned on more and more
while turning it clockwise for the volume up.
YES
NO
Is there any soundfrom the selected input source?
Refer to a portable device’s instruction manualand then check if there is sound output
from it connecting another audio system.
YES
NO
3. NO SOUND IN PORT. IN FUNCTION
TRAINING MASTER
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Does the customer select correctlythe AM/FM function he or she wants to listen to?
Make sure to connect AM/FM antennason the rear panel of the unit.
YES
NO
Is “AM or FM” displayed on VFD? Make sure to select AM or FM function
pressing the TUNER button.
YES
NO
After tuning a desired channelusing the TUNING± button,
is the sound quality good to listen to the music?
To prevent noise pickup, keep the AM Loopantenna away from the unit and other components.Be sure to fully extend the FM wire antenna. After
connecting the FM wire antenna, keep it horizontal.
YES
NO
Is the signal strength of the radio station too week? Make sure to tune the station manually.
YES
NO
5. NO SOUND IN AM/FM FUNCTION
TRAINING MASTER
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Does the customer select correctlythe CD function he or she wants to listen to? Make sure to put on a CD disc on the tray.
YES
NO
Is a CD disc put on the tray correctly? Make sure to insert the CD disc upside down.
YES
NO
Does the unit display “NO DISC” on VFDwhen a disc is inserted on the tray?
Place the disc with the labelor printed side facing upwards.
YES
NO
Does the customer usethe supported mp3 or WMA music files on the disc?
Check the playable disc.Make sure that the file extensions
are “.mp3” or “.wma”.
YES
NO
6. NO SOUND IN CD FUNCTION
TRAINING MASTER
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YES
NO
NO
TRAINING MASTER
Are the speaker cables connected correctlybetween the speaker terminals on the unit
and the speakers?
Maker sure to connect the cablesto each specified connector tightly on the unit.
Connect the woofer cables to the WOOF SYSTEMconnectors on the rear panel.
YES
NO
The sound is output from the speakers. Sound OKNO
YES
TRAINING MASTER
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Does the customer select correctlythe USB function he or she wants to listen to? Make sure to insert a USB into the USB ports.
YES
NO
Is “USB” displayed on VFD? Make sure to select the USB function
pressing the CD/USB button.
YES
NO
Does the unit display “SELECTED” on VFDwhen a USB is inserted into the USB port?
When “No USB” is displayed,make sure that the customer uses the recommended
USB which support USB2.0 or USB1.1.
YES
NO
Does the customer use the supportedmp3 or WMA music files on the disc?
Check if it is the playable disc or not.Make sure that the file extensions are
“.mp3”or “.wma”.
YES
NO
7. NO SOUND IN USB FUNCTION
TRAINING MASTER
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The sound is output from the speakers. Sound OK
YES
NO
Is the power cord pluggedinto a electrical outlet?
Make sure to plug the power cord of the unitinto a electrical outlet.
YES
NO
Does the Standby LED lightin red color?
If the customer can not see the red lighton the front panel, the SMPS might have any problem.
Please solve the problemreferring to the service manual.
YES
NO
8. NO POWER
TRAINING MASTER
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ONE POINT REPAIR GUIDE
1. NO POWERIf the unit doesn’t work by no power problem, repair the set according to the followingguide.
1-1. FUSE & BRIDGE DIODE1-1-1. SolutionPlease check and replace F901, BD901, TH901, TH902 on SMPS board.
1-1-2. How to troubleshoot (Countermeasure)1) Check if the fuse F901 is open or short-circuit.2) Check if the bridge diode BD901 is short-circuit by over current with a digital multi meter.3) Check if the NTC thermistor TH901 and TH902 is normal or open.
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ONE POINT REPAIR GUIDE
NO POWERIf the unit doesn’t work by no power problem, repair the set according to the followingguide.
1-2. D951 / D952, ZD9511-2-1. SolutionPlease check and replace D951 / D952, ZD951 on SMPS board.
1-2-2. How to troubleshoot (Countermeasure)1) Check the Anode-Cathod Voltage of D951 / D952 with a digital multi-meter, it is normally 0.2 ~ 0.3 V. If it doesn’t have any voltage, it’s destroyed. Replace it with a new one.2) Check if ZD951 is short-circuit. If it is short-circuit, and then replace it with a new one.
1-2-3. Service hint (Any picture / Remark)
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ONE POINT REPAIR GUIDE
2. NO BOOTING WHEN POWER ON THE SETThe set doesn’t work when press the power button on the front board or the remotecontrol.
2-1. FLASH MEMORY (IC101)2-1-1. SolutionPlease check and replace IC101 on MAIN board.
2-1-2. How to troubleshoot (Countermeasure)1) Check the 3.7 VA to CN102, CN103, and CN104 in standby mode. If there is no 3.7 VA, check the SMPS.2) Check 5.6 VA, 12 VA, FL+, FL- and 32 V when power on the set. - If the set doesn’t work regardless of what the KEY1 changes high to low while pressing the power
button. X100 and X101 work normally but, if you can not power on the set, replace the IC101 with a newone on the main board.
2-1-3. Service hint (Any picture / Remark)
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ONE POINT REPAIR GUIDE
3. VFD IS NOT DISPLAYED WHEN POWER ON THE SETWhen power on the set, any icons or characters on VFD are not displayed.
3-1. VFD3-1-1. SolutionPlease check and replace DIG301 on FRONT board.
3-1-2. How to troubleshoot (Countermeasure)1) Check if 32 V, FL+ and FL- are output from SMPS to VFD via the MAIN board.2) Check if the IC101 outputs VFD_RST, VFD_CLK, VFD_STB, and VFD_STB to the FRONT board.3) Check if the VFD grid current amplifier circuit (Q301, Q303, Q304) on the FRONT board. Check the drive signal to the transistor’s base. If the control signals from VFD (TP302, TP303, TP304) isn’t output, replace VFD with a new one. If the transistor doesn’t work, replace it.
3-1-3. Service hint (Any picture / Remark)
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ONE POINT REPAIR GUIDE
4. NO BOOTING IN CD/USB FUNCTIONAfter you turn on power key and displayed message in the following order(HELLO --> VOL XX --> CD or USB) on VFD,it will not display other message on VFD, and it will not boot-up normally.
4-1. NO VCC33, VCC124-1-1. SolutionPlease check and replace IC505, IC509 on MAIN board.
4-1-2. How to troubleshoot (Countermeasure)1) Check Voltage of IC505 pin2 on MAIN board. If IC505 pin2(about 4.9 V) & D501 Input 5.6 VA doesn’t come out, check 5.6 VA from SMPS board.2) If IC505 pin2(about 4.9 V) is normal, check the PWR_CTRL(IC505 pin1) is high (about 3.3 V). If PWR_CTRL isn’t high, check pin63 of IC101 & R149,R503.3) If PWR_CTRL is high, check R592, R593 and if there’s no defective component then replace IC505.4) If 3.3 V(VCC33) is normal, check output(pin2, 4) voltage of IC509. If 1.2 V of IC509 pin2,4 doesn’t come out, then replace IC509.
4-1-3. Service hint (Any picture / Remark)
IC509IC505
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ONE POINT REPAIR GUIDE
NO BOOTING IN CD/USB FUNCTIONAfter you turn on power key and displayed message in the following order(HELLO --> VOL XX --> CD or USB) on VFD,it will not display other message on VFD, and it will not boot-up normally.
4-2. CRYSTAL (X501)4-2-1. SolutionPlease check and replace X501 on MAIN board.
4-2-2. How to troubleshoot (Countermeasure)1) If 3.3 V & 1.2V is normal, check Reset ‘High’ of IC501 pin153 on MAIN board. If MAIN_RESET isn’t high, check MICOM(IC101) pin59.2) If MAIN_RESET is high, check the soldering status of 12 MHz crystal (X501).3) If the crystal(X501) doesn’t oscillate, check R541,R542,C517,C518 around crystal(X501). If there’s no defective component, then replace X501.
4-2-3. Service hint (Any picture / Remark)
IC501
R546
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ONE POINT REPAIR GUIDE
NO BOOTING IN CD/USB FUNCTIONAfter you turn on power key and displayed message in the following order(HELLO --> VOL XX --> CD or USB) on VFD,it will not display other message on VFD, and it will not boot-up normally.
4-3. SERIAL FLASH (IC503)4-3-1. SolutionPlease check and replace IC503 on MAIN board.
4-3-2. How to troubleshoot (Countermeasure)1) If the crystal(X501) does oscillate, check serial flash(IC503) on MAIN board. Check pin8(VCC), pin6(CLK), pin1(CS#), pin2(DO), pin5(DI) of below waveform.2) If pin1, 2, 5, 6, 8 doesn’t come out, check damping resistor(R511, R513, R514, R515) of IC503. If damping resistor of IC503 is OK, then replace IC503. (it need to download program)3) After change IC503, if It is still not below waveform, check IC501(DSP IC).
4-3-3. Service hint (Any picture / Remark)
VCC
CLK
DO
CS#
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ONE POINT REPAIR GUIDE
NO BOOTING IN CD/USB FUNCTIONAfter you turn on power key and displayed message in the following order(HELLO --> VOL XX --> CD or USB) on VFD,it will not display other message on VFD, and it will not boot-up normally.
4-5. DSP IC (IC501: MLC3700)4-5-1. SolutionPlease check and replace IC501 on MAIN board.
4-5-2. How to troubleshoot (Countermeasure)1)After check them by previous pages about NO Booting, if the set is still no booting, Check soldering status of IC501. Check boot strap option(R598, R594, R597) of IC501(DSP IC).2) If below bootstrap waveform doesn’t come out, then replace IC501(DSP IC).
4-5-3. Service hint (Any picture / Remark)
R594PGPB12(Yellow)
R598
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NO OPERATION OF MDWhen no sound output in the CD function, you can not listen to music reading datafrom a CD disc if the servo motors in MD don’t work. This step is for checking theSLED MOTOR among them.
5-2. SLED MOTOR5-2-1. SolutionPlease check and replace IC407, IC408 on MAIN board.
5-2-2. How to troubleshoot (Countermeasure)1) Check the SLDO signal from Pin15 of IC407. If no signal, check 3.3 V(RF) and X402.2) Check the SLED+ & SLED- from IC408 to CN405 for driving SPINDLE motor. It is about 2.9 Vp-p. If no signal, check +1.8 V and +5 V for IC408.3) Check if the FFC cable is solidly connected between CN405 and MD.4) Check the MD. If the sled motor is sort-circuit or has any trouble, it can not move the pick-up module. Please check the function after changing another MD.
5-2-3. Service hint (Any picture / Remark)
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NO OPERATION OF MDWhen no sound output in the CD function, you can not listen to music reading datafrom a CD disc if the servo motors in MD don’t work. This step is for checking theTRAY MOTOR among them.
5-3. TURRET MOTOR5-3-1. SolutionPlease check and replace IC406, IC407 on MAIN board.
5-3-2. How to troubleshoot (Countermeasure)1) Check TUR+ & TUR- signals from Pin60 & 61 of IC501 to IC406. If no signal, check +5 V to IC406.2) Check TUR_M+ & TUR_M- from IC406 to CN405 for driving turret motor. It is about 3.8 Vp-p. If no signal, check +5 V to IC406. If it has any trouble, replace it with a new one.3) Check if the FFC cable is solidly connected between CN405 and MD.4) Check the MD. If the tray motor is sort-circuit or has any trouble, it can not rotate the tray. Please check the function after changing another MD.
5-3-3. Service hint (Any picture / Remark)
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NO OPERATION OF MDWhen no sound output in the CD function, you can not listen to music reading datafrom a CD disc if the servo motors in MD don’t work. This step is for checking theTRAY OPEN/CLOSE MOTOR among them.
5-4. TRAY OPEN / CLOSE MOTOR5-4-1. SolutionPlease check and replace IC407, IC408 on MAIN board.
5-4-2. How to troubleshoot (Countermeasure)1) Check MOT_OPEN & MOT_CLOSE signals from Pin62 & 63 of IC501 to IC408. If no signal, check +1.8 V & + 5 V to IC408.2) Check LOAD± from IC406 to CN405 for driving the tray open / close motor. It is about 3.85 Vp-p. If no signal, check +5 V to IC406. If it has any trouble, replace it with a new one.3) Check if the FFC cable is solidly connected between CN405 and MD.4) Check the MD. If the tray motor is sort-circuit or has any trouble, it can not open or close the tray. Please check the function after changing another MD.
5-4-3. Service hint (Any picture / Remark)
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NO OPERATION OF MDWhen no sound output in the CD function, you can not listen to music reading datafrom a CD disc if the pickup module in MD doesn’t work. This step is for checking theLASER TRACKING ACTUATOR.
5-5. LASER TRACKING ACTUATOR5-5-1. SolutionPlease check and replace IC407, IC408 on MAIN board.
5-5-2. How to troubleshoot (Countermeasure)The tracking actuator makes the laser beam be positioned in the center of a track on CD disc.1) Check the TRD signal from Pin14 of IC407. If no signal, check 3.3 V(RF) and X402.2) Check T- & T+ from IC408 to CN404 for driving the tracking actuator. If no signal, check +1.8 V and +5 V for IC408.3) Check if the FFC cable is solidly connected between CN404 and MD.4) Check the MD. If the pick-up module has any trouble, it can not move the laser beam on the left or right side. Please check the function after changing another MD.
5-5-3. Service hint (Any picture / Remark)
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NO OPERATION OF MDWhen no sound output in the CD function, you can not listen to music reading datafrom a CD disc if the pickup module in MD doesn’t work. This step is for checking theLASER FOCUSING ACTUATOR.
5-6. LASER FOCUSING ACTUATOR5-6-1. SolutionPlease check and replace IC407, IC408 on MAIN board.
5-6-2. How to troubleshoot (Countermeasure)The focusing actuator makes the laser beam keep a regular interval with the surface of a CD disc.1) Check the FOD signal from Pin13 of IC407. If no signal, check 3.3 V(RF) and X402.2) Check F- & F+ from IC408 to CN404 for driving the focusing actuator. If no signal, check +1.8 V and +5 V for IC408.3) Check if the FFC cable is solidly connected between CN404 and MD.4) Check the MD. If the pick-up module has any trouble, it can not move the laser beam on the top or bottom side. Please check the function after changing another MD.
5-6-3. Service hint (Any picture / Remark)
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NO SOUNDThere is no sound output in the USB FUNCTION, repair the set according to the fol-lowing guide.
6-2-1. IN THE USB FUNCTION6-2-1-1. SolutionPlease check and replace IC501, IC504 on MAIN board & IC3U01 on USB board.
6-2-1-2. How to troubleshoot (Countermeasure)1) Check +5VU to USB board. If +5.6VA to pin2 of IC3U01(LDO) doesn’t come out, check pin21~23 of CN103. If +5.6VA is normal & +5VU of IC3U01 pin3 doesn’t come out, then replace IC3U01.2) Check USB D± from main board to USB board. a. Check USB_HUB_DN/DP signals to IC501(pin16, 17) b. Check USB1/2_DN/DP signals from IC504 to CN502 (pin1, 2, 4, & 5) If there is any trouble, check the power for each IC. The power is normal but , if the signal waveform to
the IC is distorted or no signal, replace it with a new one.3) Check if “Digital audio AMP block”.
6-2-1-3. Service hint (Any picture / Remark)
USBUSB
BoardIC504
USB2512B
USB1_D+/-USB2_D+/-
USB_D+/-
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ONE POINT REPAIR GUIDE
NO SOUNDThere is no sound output by DIGITAL AUDIO AMP DAMAGE, repair the set accordingto the following guide.
6-3. BY DIGITAL AUDIO AMP DAMAGE (IN ALL FUNCTIONS)6-3-1. SolutionPlease check and replace IC701, IC702, IC703 on MAIN board.
6-3-2. How to troubleshoot (Countermeasure)1) Check FL±, FR±, RL±, RR±, SW1±, & SW2± signals from IC602 to IC701, IC702 & IC703 each input
function. If no signal, check if I2S audio signals are entered to IC602. Refer to “I2S audio signal interface”.2) Check PVDD_50V. If 50 V is abnormal, check the SMPS.3) Check +12 for driving the gate of AMP IC. a. All the powers are normal, but if +12 V is low, there is possible for AMP IC to be damaged. b. Remove a ferrite bead among FB703, FB707 and FB713 one by one. When removed a ferrite bead, if +12 V is recovered, the IC connected to it was damaged.
c. Replace the IC with a new one.4) Check the impedance between SPK+ & GND and SPK- & GND. a. If the impedance is 0 Ω , the IC must be damaged. b. After removing the heat sink, replace it with a new one.Comments !!If a AMP IC among three is damaged, “AMP_PDN” to R103 changes HIGH to LOW at regular intervals.The sound is not output by AMP power down function
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ONE POINT REPAIR GUIDE
NO SOUNDThere is no sound output in the AUX FUNCTION, repair the set according to the fol-lowing guide.
6-4. IN THE AUX FUNCTION6-4-1. SolutionPlease check and replace IC202 on MAIN board.
6-4-2. How to troubleshoot (Countermeasure)1) Check AUX_L/R signals to IC202 (Pin7, 8).
2) Check if ADC_BCK, ADC_LRCK, & DAC_MCLK are entered from IC501 to IC202.3) Check if ADC_DATA is entered from IC202 to IC501. If no signal, check +5 V & +3.3 V(ADC) for IC202. If is NG, replace it a new one.4) Check the following I2S signal flow from IC501 to IC602. (Refer to Item 6-1.) If there is any trouble, check the power for each IC. The power is normal but, if the signal waveform to the IC is distorted or no signal, replace it with a new one.5) Check if the digital audio AMP block is okay. Refer to “Digital Audio AMP” guide on Item 6-3. If AMP is damaged, replace it with a new one.
6-4-3. Service hint (Any picture / Remark)
AUX IC202
CS5346
AUX_L/R
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NO SOUNDThere is no sound output in the PORT. IN FUNCTION, repair the set according to thefollowing guide.
6-5. IN THE PORT. IN FUNCTION6-5-1. SolutionPlease check and replace IC202 on MAIN board.
6-5-2. How to troubleshoot (Countermeasure)1) Check PT_L/R signal from Main board to USB board.
2) Check if PT_LR is entered from Pin1 & 3 of CN3M01 to Pin1 & 3 to CN202.3) Check POT_L/R signals to IC202(Pin21, 22).4) Check if ADC_BCK, ADC_LRCK, & DAC_MCLK are entered from IC501 to IC202.5) Check if ADC_DATA is entered from IC202 to IC501. If no signal, check +5 V & +3.3 V(ADC) for IC202. If is NG, replace it a new one.6) Check the following I2S signal flow from IC501 to IC602. (Refer to Item 5-1.) If there is any trouble, check the power for each IC. The power is normal but , if the signal waveform to
the IC is distorted or no signal, replace it with a new one.7) Check if the digital audio AMP block is okay. Refer to “Digital Audio AMP” guide on Item 6-3. If AMP is damaged, replace it with a new one
6-5-3. Service hint (Any picture / Remark)
IC202 POT.INMICPOT_L/R
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NO SOUNDThere is no sound output in the TUNER FUNCTION, repair the set according to thefollowing guide.
6-6. IN THE TUNER FUNCTION6-6-1. SolutionPlease check and replace IC202, TU101 on MAIN board.
6-6-2. How to troubleshoot (Countermeasure)1) Check if TUNER_LR is entered from Pin1 & 3 of T1U01 to IC202(Pin23, 24). If no signals, Check +3.3 V for Tuner power. Check if the Tuner control signals (CLK, DAT, CE, RST, GPO2) are entered from IC101 to TU101. If it doesn’t work, replace TUNER with a new one.2) Check if ADC_BCK, ADC_LRCK, & DAC_MCLK are entered from IC501 to IC202.3) Check if ADC_DATA is entered from IC202 to IC501. If no signal, check +5 V & +3.3 V(ADC) for IC202. If is NG, replace it a new one.4) Check the following I2S audio signal flow from IC501 to IC602. (Refer to Item 5-1.) If there is any trouble, check the power for each IC. The power is normal but, if the signal waveform to
the IC is distorted or no signal, replace it with a new one.
5) Check if the digital audio AMP block is okay. Refer to “Digital Audio AMP” guide on Item 6-3. If AMP is damaged, replace it with a new one.
6-6-3. Service hint (Any picture / Remark)
ONE POINT REPAIR GUIDE
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ONE POINT REPAIR GUIDE
NO SOUNDThere is no sound output in the MIC IN FUNCTION, repair the set according to thefollowing guide.
6-7. IN THE MIC IN FUNCTION6-7-1. SolutionPlease check and replace IC603, IC605 on MAIN board.
6-7-2. How to troubleshoot (Countermeasure)1) Check MIC_SIG signal to Pin6 of CN601. If no signal, Check the signal to Pin6 of CN3M01 on the MIC board.Check if the signal is entered from Pin6 of CN3M01 to MAIN board.2) Check if MIC_SIG is entered from Pin6 of CN601 to pin3 of IC605 (MIC AMP).3) Check if the amplified signal is entered from pin4 of IC605. If no signal output, check +12 V for IC605, replace IC605 with a new one if it has a problem.4) Check if MIC_BCK & MIC_LRCK is entered from IC507 to IC603 and DAC_MLCK from IC501 to IC603. Check if MIC_DATA is entered from Pin9 of IC603 to pin7 of IC602. If no signal, check +5 V & +3.3 V for IC603. If it is abnormal, change replace it a new one.6) Check the following I2S signal flow from IC603 to IC602. If there is any trouble, check the power for each IC. If the signals are abnormal, replace it a new one.7) Check if the digital audio AMP block is okay. Refer to “Digital Audio AMP” guide on Item 6-3. If AMP is damaged, replace it with a new one.
6-7-3. Service hint (Any picture / Remark)
ELECTRICAL TROUBLESHOOTING GUIDE
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ELECTRICAL TROUBLESHOOTING GUIDE
1. POWER SUPPLY ON SMPS BOARD
YES
YES
YES
YES
No output 5.7 VA
Replace F901 (same fuse).
Replace D904.
Replace BD901.
Replace D933, D937.
NO
NO
NO
NO
F901 normal?
D904 normal?
BD901 normal?
D933, D937 normal?
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ELECTRICAL TROUBLESHOOTING GUIDE
YES
YES
YES
YES
No output 12 V
Replace F901 (same fuse).
Replace D904.
Replace BD901.
Replace D934, D935.
NO
NO
NO
NO
F901 normal?
D904 normal?
BD901 normal?
D934, D935 normal?
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ELECTRICAL TROUBLESHOOTING GUIDE
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ELECTRICAL TROUBLESHOOTING GUIDE
No AMP Output
Check 3.3 V & P-CTRL.
Replace ZD912, ZD913.
Replace D951, D952.
Replace D904, Q901, PC911.
Is theVCC supplied to
IC911 Pin7?
ZD912, ZD913OK ?
D951, D952OK ?
NO
NO
NO
NO
NO
P-CTRL OK?
Q901,D904OK?
YES
YES
YES
YES
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ELECTRICAL TROUBLESHOOTING GUIDE
Power on.
Check FFC cable (17P).
Check MAIN board.
Check SMPS board.
Replace DIG301.Q301, 303, 304grid voltage OK?
“HELLO”Display on FLD
OK?NO NO
NO
NO
NO
CN301cable connection
OK?
CN301Pin8, 9, 10 data signal
OK?
CN301Pin15, 16, 17 power
OK?
2. SYSTEM PART
YES YES
YES
YES
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ELECTRICAL TROUBLESHOOTING GUIDE
CD FUNCTION
Is motor_open/ close OK?(IC408 Pin9,10)
Check IC408.
Check IC501.
Check Loading motor.
OPU driving(Focusing & Tracking) OK?
Is motor impedanceabout 12 Ω?
Candisc insert?
Disc reading OK?NO
NO
NO
NO
NO
Focusing/Tracking/ Sled Signal
OK?
LOAD +- OK?
YES
NO
YES YES
3. NO AUDIO PART
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ELECTRICAL TROUBLESHOOTING GUIDE
USB play
Check IC501.
Replace IC3U01.
IC501Pin16,18 USB_HUB_D output
signal OK?
NO
NOIC3U01USB power +5 VUOK?
YES
A
When insertUSB,IC504 Pin1,2,3,4 USB_D
signal OK?
NO
YES
YES
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A
YES
YES
YES
POT. IN
Check MIC board.
Replace IC202.
Check IC501.
NO
NO
NO
IC202Pin21,22 POT. IN input signal
OK?
IC202Pin41 ADC data output signal
OK?
IC202Pin42,43,44 I2S input signal
OK?
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A
YES
YES
YES
YES
Replace IC501.
Replace IC507.
Check IC507.
Check IC501.
NO
NO
NO
NO
IC501Pin4, 5, 6 I2S data output
signal OK?
IC507Pin7,14 BEAT_LRCK/BCK output
signal OK?
IC507Pin2, 17 DAC_BCK/LRCK input
signal OK?
IC501Pin6 BEAT_DAC_DATA output
signal OK?
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4. DIGITAL AUDIO AMP CHECK
B
Replace IC602.
Check IC801 & IC501.
Check IC602. Check IC602.
IC602PWM data output signal
OK?
IC602I2S input signal
OK?
IC701FL± / FR± input signalOK?
IC703RL± / RR± input signalOK?
IC702SW1± / SW2± input signalOK?
NO
NO
NO NO
YES
YES
YES YESYES
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CD/ USB play
Check Woofer SPK.
Replace IC601.
Check SMPS board.
Pin1 +3.3 V OK?NO NOCheck IC601 OK?
5. NO LIGHTING (WOOFER SPEAKER)
YES YES
Check SMPS board.
Check IC801.
Pin8 +12 V OK?
JK101,102 Pin 3,7I2C signal OK?
NO
NO
YES
YES
WAVEFORMS
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1. SERVO WAVEFORM
Figure 1-1. CD-16MIC407 pin31
Figure 1-2. Servo - FE, TE, FOD, RFIC407 pin61, pin62, pin63 / IC408 pin1
FE
TE
FOD
RF
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2. MOTOR DRIVE WAVEFORM
Figure 2-1. SP- & SP+ for driving Spindle motorIC408 pin17, pin18
Figure 2-2. SL- & SL+ for driving Spindle motorIC408 pin11, pin12
SP- SL-
SP+ SL+
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3. AUDIO PATH WAVEFORM
Figure 3-1. CD-I2SIC407 pin34, pin35, pin36
Figure 3-2.IC501 pin95, pin96, pin97
BCK BCK
LRCK LRCK
DATA DATA
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4. ADC WAVEFORM
Figure 3-5. AUDIO_L/R
AUDIO_L
AUDIO_R
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5. IPOD WAVEFORM 6. USB WAVEFORM
7. CRYSTAL WAVEFORM 8. BEATBOX IC POWER SEQUENCE
Figure 5. iPod signalCN201 pin14, pin6, pin8, pin11
Figure 6. USB D+/D-CN502 pin1, pin2 & pin4, pin5
IPOD_DET
IPOD_READY
IPOD_RX
IPOD_L
D+
D-
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9. VFD GRID CURRENT DRIVER
Figure 9.
MEMO
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WIRING DIAGRAM
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3-53 3-54
AMP AMP AMP
MOT
P/UP
BLOCK DIAGRAMS 1. SMPS BLOCK DIAGRAM
STR-A6053 for MAIN
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3-55 3-56
DigitalPower AMP
FL
FR
SW
C
SL
SR
TRANS
MAIN&
Filter Section
(Varistor,Resistor,Line Filter
Thermistor)
Rectifier Circuit(Bridge,
CAPACITOR)
AMP Power &
NCP1252Control IC
FETAC
Snubber
Main Power TRANS
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CIRCUIT DIAGRAMS 1. SMPS CIRCUIT DIAGRAM
IMPORTANT SAFETY NOTICE
WHEN SERVICING THIS CHASSIS, UNDER NOCIRCUMSTANCES SHOULD THE ORIGINAL DESIGN BEMODIFIED OR ALTERED WITHOUT PERMISSIONFROM THE LG CORPORATION. ALL COMPONENTSSHOULD BE REPLACED ONLY WITH TYPES IDENTICALTO THOSE IN THE ORIGINAL CIRCUIT. SPECIAL
COMPONENTS ARE SHADED ON THE SCHEMATICFOR EASY IDENTIFICATION.THIS CIRCUIT DIAGRAM MAY OCCASIONALLY DIFFERFROM THE ACTUAL CIRCUIT USED. THIS WAY,IMPLEMENTATION OF THE LATEST SAFETY ANDPERFORMANCE IMPROVEMENT CHANGES INTOTHE SET IS NOT DELAYED UNTIL THE NEW SERVICELITERATURE IS PRINTED.
NOTE :1. Shaded( ) parts are critical for safety.
Replace only with specified part number.2. Voltages are DC-measured with a digital voltmeter
during Play mode.
12
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3-59 3-60
A
1
2
3
4
5
6
7
8
9
10
11
B C D E F G H I J K L M N O P Q R S T
CAUTION: Danger if fuse is incorrectly replaced.
Replace only with the type identical to fuse ratingand(or) model name described in main label.
WarningParts that are shaded are critical withrespect to risk of fire or electrical shock. SMPS
EAX64583501_Rev1.1-SD2012. 01. 09
2. MAIN - MICOM CIRCUIT DIAGRAM
12
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3-61 3-62
A
1
2
3
4
5
6
7
8
9
10
11
B C D E F G H I J K L M N O P Q R S T
MICOEAX64550401_Rev1.2-SD(#1
2012. 01. 0
3. MAIN - PWM / FILTER CIRCUIT DIAGRAM
12
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3-63 3-64
A
1
2
3
4
5
6
7
8
9
10
11
B C D E F G H I J K L M N O P Q R S T
PWMEAX64550401_Rev1.2-SD(#2)
2012. 01. 09
4. MAIN - IR AMP CIRCUIT DIAGRAM
12
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3-65 3-66
A
1
2
3
4
5
6
7
8
9
10
11
B C D E F G H I J K L M N O P Q R S T
AEAX64550401_Rev1.2-SD(#3
2012. 01. 0
5. MAIN - DSP / USB / IPOD CIRCUIT DIAGRAM
12
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3-67 3-68
A
1
2
3
4
5
6
7
8
9
10
11
B C D E F G H I J K L M N O P Q R S T
DSPEAX64550401_Rev1.2-SD(#4)
2012. 01. 09
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7. MAIN - ADC CIRCUIT DIAGRAM
11
12
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3-71 3-72
A
1
2
3
4
5
6
7
8
9
10
11
B C D E F G H I J K L M N O P Q R S T
ADCEAX64550401_Rev1.2-SD(#6)
2012. 01. 09
8. MAIN - BEAT BOX CIRCUIT DIAGRAM
11
12
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3-73 3-74
A
1
2
3
4
5
6
7
8
9
10
B C D E F G H I J K L M N O P Q R S T
BEAT BOEAX64550401_Rev1.2-SD(#7
2012. 01. 0
9. FRONT - VFD CIRCUIT DIAGRAM
11
12
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3-75 3-76
A
1
2
3
4
5
6
7
8
9
10
B C D E F G H I J K L M N O P Q R S T
VFDEAX64550501_Rev1.3-SD
2012. 01. 09
10. FRONT - VOLUME CIRCUIT DIAGRAM
11
12
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3-77 3-78
A
1
2
3
4
5
6
7
8
9
10
B C D E F G H I J K L M N O P Q R S T
VOLUMEAX64550601_Rev1.3-SD
2012. 01. 0
11. FRONT - USB CIRCUIT DIAGRAM
11
12
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3-79 3-80
A
1
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B C D E F G H I J K L M N O P Q R S T
USBEAX64550701_Rev1.3-SD
2012. 01. 09
12. FRONT - MIC CIRCUIT DIAGRAM
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B C D E F G H I J K L M N O P Q R S T
MIC & PORTABLEAX64550801_Rev1.3-SD
2012. 01. 0
CIRCUIT VOLTAGE CHART 1. ICs
No. IC Sym IC Name / Type Vcc/Vdd
1IC101
MICOM
LC87F5NC8A(SANYO)TYPE: 100PVENDER: SANYOVDD: 14, 40, 55, 89
Spec:VDD: +2.8 ~ +5.5V
Measured volt.: VDD: 3.392V
2
IC102IC103 AZ7027RTRE1TYPE: 3P
Spec:VCC: Max 18V
No. IC Sym IC Name / Type Vcc/Vdd
10
IC408
Motor Drive(5ch)
S3053TYPE:28PVENDER: AUKVCC1,2 :8,19
Spec:VCC1,2: 4.3 ~
13.2VMeasured volt.:
VCC1,2: 5.1V
MLC3700ATYPE:176P
Spec:VDD33,UVDDA33,PXI
No. IC Sym IC Name / Type Vcc/Vdd
19IC601
LDO
LM37102DTYPE: 8PVENDER: TAEJINVIN:2, Vout:3
Spec:Vin: +2.25 ~ +16V
Vout:+1.25 ~+15V
Measured volt.: Vin: 3.68V Vout:3.27V
Spec:
No. IC Sym IC Name / Type Vcc/Vdd
26IC803
BUFFER IC
74AHC244FTTYPE:20PVENDER: TOSIBAVIN:2,4,6,8,11,13,15,17Vout:3,5,7,9,12,14,16,18
Spec: VIN: 2~5.5V Vout: 0~VIN
Measured volt.: VIN: 3.28V Vout: 3.29V
MX25L3206EM2I-
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2
Voltage detectors
TYPE: 3PVENDER: BCDVcc:1, Vout:3
Measured volt.: Vcc: 3.53V
3IC104
LDO
AZ1117BH-ADJTYPE:3PVENDER: BCDVIN: 3 VOUT: 2,4
Spec:Vin: Max 12V
Vout:Max 10VMeasured volt.:
Vin:5.65VVout: 3.68V
4
IC201
Noise IsolationAmplier
NJM2794RB2TYPE: 10PVENDER: JRCV+:4
Spec:VIN: 4.3~13VMeasured volt.:
VIN: 11.9V
5IC202
ADC
CS5346_ADCTYPE:48PVENDER: CIRRUSLOGICVA:14/ VD: 46/VLS: 36VLC: 5
Spec: VA: 4.75~5.25V VD: 3.13~3.47V VLS: 3.13~5.25V VLC: 3.13~5.25V
Measured volt.: VA: 5.1V VD: 3.29V VLS: 3.29V VLC: 3.29V
6IC203
LDO
LM37102DTYPE:8PVENDER:TAEJINVIN: 2 Vout: 3
Spec:VIN: 2.25V~16V
Vout:2.22~16.16V
Measured volt.: VIN: 5.63V Vout: 5.07V
7IC204
LDO
LM37102DTYPE:8PVENDER:TAEJINVIN: 2 Vout: 3
Spec:VIN: 2.25V~16V
Vout: 2.22~16.16VMeasured volt.:
VIN: 5.61 Vout: 5.02
8
IC406
Motor Drive(1ch)
S8082TYPE:8PVENDER:AUKPVCC,SVCC:6,7
Spec:PVCC,SVCC:4.3 ~ 13.2V
Measured volt.: PVCC,SVCC:5.1V
9 IC407
RF IC
BU9543KVTYPE:64P
VENDER: ROHM
DVDD,AVDD:1,17,33,47,53,59VDD_CORE: 26,37
Spec:DVDD,AVDD:
2.7V ~ 3.6V VDD_CORE:1.75 ~ 1.95V
Measured volt.: DVDD,AVDD:3.29V VDD_CORE:1.85V
11IC501
DSP
VENDER:MCSLOGIC
VDD33,UVDDA33,PXI_VDD33,ADCVDD33:1,14,20,22,2
6,36,50,87, 99,117,141,167VDD12:8,24,65,89,151,161
PXI_VDD33,ADCVDD33:+3.135 ~ +3.465VVDD12: +1.14 ~+1.26V
Measured volt.:VDD33,UVDDA33,PXI_VDD33,ADCVDD33:3.30VVDD12: 1.20V
12IC502
SDRAM
M12L64164ATYPE:54PVENDER: ESMT
VDD,VDDQ:1,3,9,14,27,43,49
Spec:VDD,VDDQ: +3.0 ~+3.6V
Measured volt.:VDD,VDDQ: 3.29V
13IC503
Serial Flash
MX25L8006EM2ITYPE:8PVENDER:MXVCC:8
Spec:VCC: 2.7V ~
3.6VMeasured volt.:
VCC: 3.29V
14IC504
USB HUB
USB2512BTYPE:36PVENDER:SMSCVDD33:
5,10,15,23,29,36
Spec:VDD: 3.0V ~
3.6VMeasured volt.:
VDD: 3.29V
15IC505
LDO
LM27152RSTYPE: 5PVENDER: TAEJINVIN:2, Vout:4
Spec:Vin: Max 26V
Vout:Max 25VMeasured volt.:
Vin: 5.65V Vout:3.29V
16IC506
CP CHIP
MFI337S3959TYPE:8PVENDER: APPLEVCC:9
Spec:VDD: 1.62V ~
5.5VMeasured volt.:
VDD: 3.29V
17IC507
BUFFER
74AHC244FTTYPE:20PVENDER:PhilipsVCC:20
Spec:Vcc: 2.0V ~ 5.5VMeasured volt.:
VDD: 3.29V
18IC509
LDO
AZ1117BH-1.2TRE1TYPE:3PVENDER:BCDVIN:3, Vout:2
Spec:Vin: Max 12V
Vout: 1.176 ~1.224V
Measured volt.: VDD: 3.29V Vout: 1.2V
20IC602
PWM Controller
PS9854TYPE: 68PVENDER: PULSUSVDD_IO:5,30,33,37,42,51VDD_IN1,2: 64,67
VDD_OUT1,2,VDD_core:1,63,60,45,22
Spec:VDD_IO:2.97~3.63VVDD_IN1,2:2.2~3.3VVDD_OUT,VDD_core: 1.08~1.32V
Measured volt.:VDD_IO: 3.27VVDD_IN1,2: 3.27VVDD_OUT,VDD_core: 1.25V
21IC603
ADC
AK5358TYPE:16PVENDER:AKMVA:6VD:7
Spec:VA:4.5~5.5VVD:2.7~3.6V
Measured volt.:VA:5.21VVD:3.28V
22
IC605
preampli er IC
S4308TYPE: 6PVENDER: AUKVCC: 6
Spec: VCC: +5 ~ +14V
Measured volt.: VCC: 11.45V
23
IC701IC702IC703
AMP
TAS5631BTYPE: 64PVENDER:Texas InstrumentPVDD_x:30,31,38,39,42,43,50,51GVDD_x:25,26,55,56VDD:64
Spec:PVDD_x: +25 ~+52.5V
GVDD_x: +10.8 ~+13.2VVDD: +10.8 ~+13.2V
Measured volt.:PVDD_x: 49.8VGVDD_x: 12.1VVDD: 12.1V
24IC801
BEAT BOX IC
FS-503BTYPE: 252PVENDER: FINEARCHVIN: W17,W18,N18,U18,N19,C19,B15,D9,D12,E3,G17,K3,N17,R3,R9,T12,C9,B3,A8,B9A15,B18,A18,W2,V18,A5,E1,E2,F2,L1,V2,T1,W10,W13,V17,
Spec: VIN:
VDDE: 1.1~1.3V VDDK: 3.0~3.6V
Measured volt.: VIN:
VDDE: 1.21V VDDK: 3.32V
25IC802
LDO
TJ4220GPDTYPE:8PVENDER:HTCVIN: 3 Vout: 6
Spec: VIN: 2.5~6VVout: 1.17~1.23V
Measured volt.: VIN: 3.27V Vout: 1.23V
27IC805
MEMORY
MX25L3206EM2I-12GTYPE:8PVENDER: MXVCC: 8
Spec: VCC: 2.7~3.6V
Measured volt.: VIN: 3.27V
28IC3U01
LDO
LM37102DTYPE:8PVENDER:TAEJINVIN: 2 Vout: 3
Spec: VIN: 2.25V~16V Vout: 2.22~16.16V
Measured volt.: VIN: 5.65V Vout: 5.09
29
IC3V01IC3V02
LED DRIVER
BU2090FTYPE:16PVENDER:ROHMVDD: 16
Spec: VDD: 4.3~13V
Measured volt.: VDD: 3.57V
30ICW51
LED DRIVER
BU2090FTYPE:16PVENDER:ROHMVDD: 16
Spec: VDD: 4.3~13V
Measured volt.: VDD: 3.57V
2. CAPACITORSMEMO
No. LocationValue
Capacitor(uF)
VoltageSpec
Measuredvoltage
01 C122 100uF 16V 3.31
02 C151 47uF 16V 3.43
03 C124 1000uF 16V 3.41
04 C601 100uF 16V 3.32
No. LocationValue
Capacitor(uF)
VoltageSpec
Measuredvoltage
44 C244 100uF 16V 5.61
45 C231 47uF 16V 5.08
46 C236 10uF 16V 5.19
01 C243 47uF 16V 12.1
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05 C682 220uF 6.3V 3.32
06 C620 220uF 6.3V 1.23
07 C655 10uF 16V 2.4
08 C660 47uF 16V 3.31
09 C676 4.7uF 50V 2.0910 C679 100uF 16V 11.5
11 C681 1uF 16V 0
12 C713 470uF 100V 49
13 C734 470uF 100V 49
14 C706 10uF 16V 12.3
15 C700 10uF 16V 3.28
16 C753 470uF 100V 49
17 C774 470uF 100V 49
18 C746 10uF 16V 12.2
19 C780 10uF 16V 3.24
20 C793 470uF 100V 49
21 C784 470uF 100V 49
22 C786 10uF 16V 12.1
23 C760 100uF 16V 11.3
24 C876 10uF 16V 3.32
25 C531 47uF 16V 4.89
26 C550 47uF 16V 1.21
27 C525 47uF 16V 3.28
28 C527 47uF 16V 1.21
29 C533 47uF 16V 3.32
30 C570 10uF 16V 3.28
31 C413 100uF 16V 5.09
32 C457 47uF 16V 3.28
33 C458 47uF 16V 3.27
34 C462 47uF 16V 3.32
35 C431 47uF 16V 1.65
36 C467 3.3uF 50V 1.74
37 C492 47uF 16V 3.32
38 C4H6 100uF 6.3V 1.83
39 C485 220uF 16V 5.08
40 C210 10uF 16V 2.47
41 C211 47uF 16V 4.98
42 C213 47uF 16V 4.97
43 C221 100nF 16V 3.28
02 C303 47uF 50V 7.2
03 C322 47uF 50V 3.24
04 C319 47uF 50V 31.9
05 C313 220uF 6.3V 3.47
01 C3V20 47uF 16V 3.57
02 C3V24 47uF 16V 3.52
01 CW54 47uF 16V 3.28
No. LocationValue
Capacitor (uF)
VoltageSpec.
100V-10%
240V/50Hz+10%
Measuredvoltage
Measuredvoltage
01 C903 1000uF 315V 122.3V 190V
02 C904 1000uF 315V 123.9V 180.7V
03 C905 33uF 500V 245.9V 370.1V
04 C908 47uF 50V 15.34V 15.33V
05 C912 47uF 50V 18.47V 18.59V
06 C914 47uF 50V 12.68V 13.8V
07 C931 330uF 16V 4.81V 4.8V08 C932 100uF 50V 31.96V 31.98V
09 C933 1000uF 16V 5.75V 5.75V
10 C935 1000uF 25V 12.63V 12.62V
11 C942 100uF 16V 11.99V 11.98V
12 C953 2200uF 80V 47.9V 48.1V
PRINTED CIRCUIT BOARD DIAGRAMS 1. SMPS P.C.BOARD (TOP VIEW)
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SMPS P.C.BOARD (BOTTOM VIEW)
NOTE) WarningParts that are critical with respect to riskof fire or electrical shock.
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2. MAIN P.C.BOARD (TOP VIEW)
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MAIN P.C.BOARD (BOTTOM VIEW)
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3. FRONT_VFD P.C.BOARD (TOP VIEW)
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(BOTTOM VIEW)
4. FRONT_USB P.C.BOARD (TOP VIEW) (BOTTOM VIEW)
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5. FRONT_MIC P.C.BOARD (TOP VIEW) (BOTTOM VIEW)
6. FRONT_VOLUME P.C.BOARD (TOP VIEW)
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FRONT_VOLUME P.C.BOARD (BOTTOM VIEW)
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MEMOMEMO
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