LG HT964TZ.pdf

7/25/2019 LG HT964TZ.pdf

1/71

JUNE, 2009

Website http://biz.lgservice.co

Internal Use On

DVD RECEIVER SYSTEM

SERVICE MANUAL

HT964TZ

(HT964TZ-AM,SH94TZ-F/S/C/W)

SERVICEMANUAL

MODEL: HT964TZ

(HT964TZ-AM, SH94TZ-F/S/C/W)

MODEL:

P/NO : AFN73178955

7/25/2019 LG HT964TZ.pdf

2/71

1-1

[CONTENTS]

SECTION 1. GENERAL

SERVICING PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

ESD PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

SERVICE INFORMATION FOR EEPROM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

HOW TO UPDATE AUDIO MICOM & DVD PROGRAMS. . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

SECTION 2. ELECTRICAL PART

TROUBLESHOOTING GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

DETAILS AND WAVEFORMS ON SYSTEM TEST AND DEBUGGING . . . . . . . . . . . . . . . 2-13

WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-27

SMPS BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-29

CIRCUIT DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-31

CIRCUIT VOLTAGE CHART . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-59

PRINTED CIRCUIT DIARGAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-63

SECTION 3. EXPLODED VIEWS

CABINET AND MAIN FRAME SECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

DECK MECHANISM EXPLODED VIEW (DP-15A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

PACKING ACCESSORY SECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

SPEAKER SECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

SECTION 4. MECHANISM (DP-15A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

SECTION 5. REPLACEMENT PARTS LIST. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

7/25/2019 LG HT964TZ.pdf

3/71

1-2

SERVICING PRECAUTIONSNOTES 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/or

damage to the printed-circuit board.3) Each and every pick-up is already individually adjusted to a high degree of precision, and for that reason

the 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.

5) Cleaning the lens surface

If there is dust on the lens surface, the dust should be cleaned away by using an air bush (such as usedfor camera lens). The lens is held by a delicate spring. When cleaning the lens surface, therefore, a cot-

ton swab should be used, taking care not to distort lens.

6) Never attempt to disassemble the pick-up.

Spring has excess pressure. If the lens is extremely dirty, apply isopropyl alcohol to the cotton swab.

(Do not use any other liquid cleaners, because they will damage the lens.) Take care not to use too much

of this alcohol on the swab, and do not allow the alcohol to get inside the pick-up.

Storage in conductive bag Drop impact

NEVER look directly at the laser beam, and dont allowcontact with fingers or other exposed skin.

Magnet

How to hold the pick-up

Conductive Sheet

Cotton swab

Pressure

Pressure

SECTION 1. GENERAL

7/25/2019 LG HT964TZ.pdf

4/71

1-3

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, components

can 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 be

taken, therefore, to avoid repair or storage where the temperature or humidity is high, where strong magne-tism is present, or where there is excessive dust.

2. Notes for repair1) Before replacing a component part, first disconnect the power supply lead wire from the unit

2) 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 is

because 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 (1M )

6) Care should be taken not to permit the laser pick-up to come in contact with clothing, in order to preventstatic 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 )Conductive

Sheet

Resistor(1 M )

Armband

7/25/2019 LG HT964TZ.pdf

5/71

1-4

ESD PRECAUTIONS

THE LIGHTNING FLASH WITH APROWHEAD SYMBOL. WITHIN AN EQUILATERAL TRIANGLE, IS

INTENDED TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF UNINSULATED

DANGEROUS VOLTAGE THAT MAY BE OF SUFFICIENT MAGNITUDE TO CONSTITUTE A RISK OF

ELECTRIC SHOCK.

THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIANGLE IS INTENDED TO ALERT THE

SERVICE PERSONNEL TO THE PRESENCE OF IMPORTANT SAFETY INFORMATION IN SERVICE

LITERATURE.

Electrostatically Sensitive Devices (ESD)Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components

commonly are called Electrostatically Sensitive Devices (ESD). Examples of typical ESD devices are integrated

circuits and some field-effect transistors and semiconductor chip components. The following techniques should

be 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 off

any electrostatic charge on your body by touching a known earth ground. Alternatively, obtain and wear a

commercially 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 surface

such 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 ESDdevices.

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 by

conductive 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.

8. Minimize bodily motions when handing unpackaged replacement ESD devices. (Otherwise harmless motion

such as the brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate

static electricity sufficient to damage an ESD device).

CAUTION. GRAPHIC SYMBOLS

7/25/2019 LG HT964TZ.pdf

6/71

1-5

SERVICE INFORMATION FOR EEPROM

POWER ON

DVD LOGO Status (NO Disk status)

Remote control

Pause key1472 in order.

Press number 0~9, Press character

A~F (1~6 for a while)

Use arrow key (

) to moveto appropriate position and make

changes

Press pause key once

Change will be applied when power

OFFON.

NAME

OPT 1

OPT 2

OPT 3

OPT 4

OPT 5

OPT 6

OPT 7

OPT 8

OPT 9

OPT A

HEX

DETECT NEW EEPROM(OPTION EDIT SCREEN)

21

01

CC

DD

00

09

E4

24

C1

00

7/25/2019 LG HT964TZ.pdf

7/71

1-6

HOW TO UPDATE AUDIO MICOM & DVD PROGRAMS

1. How to update AUDIO MICOM program.

[Update using CD]

1. Change the filename to download as (MODEL NAME)_(Version).HEX. Only upper cases are permitted.

ex) HT964 : HT964_0810010.HEX2. Copy the file to the root folder of a CD and burn it.

3. Insert the CD to the SET, and move to the DVD function. Then the upgrade process will be started with

the upgrade information.

4. If the upgrade process is complete, the set will be rebooted with Complete message.

[Update using USB]

1. Change the filename to download as (MODEL NAME)_(Version).HEX. Only upper cases are permitted.

ex) HT964 : HT964_0810010.HEX

2. Copy the file to the root folder of USB storage.

3. Put the USB into the SET, and move to the USB function. Then the upgrade process will be started with

the upgrade information.4. If the upgrade process is complete, the set will be rebooted with Complete message.

2. How to update DVD program.[Update using CD]

1. Rename the filename to download as LOGO_MODELNAME.ROM in upper cases.

ex) HT964: LG_HT964.ROM

2. Copy the file to CD, and burn it.

3. Insert the CD to the SET, then after a while the CD tray will be opened with upgrade information on the

screen.

4. Remove the CD, and press PLAY key in remote controller.

5. Remove and reconnect the power cable when it changes to logo screen from upgrade information.Then the upgrade process is completed.

[Update using USB]

1. Rename the filename to download as LOGO_MODELNAME.ROM in upper cases.

ex) HT964: LG_HT964.ROM

2. Copy the file to the formatted USB, and burn it.

3. Move to the USB function, and insert the USB to the set.

The upgrade information will be shown on the screen.

4. Remove the USB, press PLAY key of the remote controller.

5. Remove and reconnect the power cable when it changes to logo screen from upgrade information. Then

the upgrade process is completed.

7/25/2019 LG HT964TZ.pdf

8/71

1-7

SPECIFICATIONS

GENERAL

Power supply Refer to main label.

Power consumption Refer to main label.

Net Weight 3.7 kg

External dimensions (W x H x D) 430 x 73 x 303 mm

Operating conditions Temperature 5C to 35C, Operation status: Horizontal

Operating humidity 5% to 85%

Laser Semiconductor laser, wavelength 650 nm

TUNER

FM

FM Tuning Range 87.5 - 108.0 MHz

FM Intermediate Frequency 128 kHz

AM [MW]

AM Tuning Range 552 - 1,620 kHz or 520 - 1,720 kHz or 522 - 1,710kHzAM Intermediate Frequency 45 kHz

AMPLIFIER

Stereo mode 155 W + 155 W (4 at 1 kHz, THD 10 %)

Surround mode Front: 155 W + 155 W (THD 10 %)

Center*: 155 W

Surround*: 155 W + 155 W (4 at 1 kHz, THD 10 %)

Subwoofer*: 225 W (3 at 30 Hz, THD 10 %)

SPEAKERS (HT964TZ) Front Speaker Rear Speaker

(SH94TZ-F) (SH94TZ-S)

Type 2 Way 3 Speaker 2 Way 3 Speaker

Impedance 4 4

Rated Input Power 155 W 155 W

Max. Input Power 310 W 310 W

Net Dimensions (W x H x D) 300 x 1265 x 300 mm 300 x 1265 x 300 mm

Net Weight 5.0 kg 4.7 kg

Center Speaker Passive Subwoofer (SH94TZ-C) (SH94TZ-W)


Impedance 4 3




Net Weight 1 kg 7.3 kg

(* Depending on the sound modesettings and the source, there may

be no sound output.)

7/25/2019 LG HT964TZ.pdf

9/71

1-8

SPEAKERS (HT964PZ)

Front Speaker Rear Speaker

(SH94PZ-F) (SH94PZ-S)


Impedance 4 4




Net Weight 5.0 kg 0.8 kg

Center Speaker Passive Subwoofer

(SH94PZ-C) (SH94PZ-W)


Impedance 4 3




Net Weight 1 kg 7.3 kg

7/25/2019 LG HT964TZ.pdf

10/71

2-1

TROUBLESHOOTING GUIDE1. Power Supply Circuit

SECTION 2. ELECTRICAL PART

YES

Check power plug and power

supply circuit.

NO

Check power supply circuit.NO

Check laser circuit.NO

Check focus circuit.

Check disc.

Check tracking servo circuit.NO

Check audio circuit.NO

Is the Digitron on correctly?

YES

Is power on?

YES

Does initial read work?

YES

Does it play?

YES

Does it output

audio?

YES

YES

Turn power on.

Insert power cord.

OK

7/25/2019 LG HT964TZ.pdf

11/71

2-2

2. Front circuit (1/2)

Reconnect it.NO

YES

YES YES

NO Check if CN302

and PN331 are ok?Red LED turn off?

NO

Refer to SMPS part.NO

YES

NOCheck if the frontpower is ok?(*1)

YES

Is the Digitron on

correctly?

NO

Check pattern and resolderingNOCheck if

DIS301 is ok?

YES

Check if the remote

control is ok?

YES

Check if all

buttons are ok?

Power on.

Front B/D ok.

1

2

*1 : PN106 Pins.PIN1 : -34 VKK, PIN2 : -28 FL+, PIN3 : -32 FL-,

PIN12 : +5.6VA, PIN13 : +5V

7/25/2019 LG HT964TZ.pdf

12/71

2-3

3. Front circuit (2/2)

1

Refer to power(SMPS).NO

Replace R203~R210, R149.

NO

Check if thepower part of thefront is ok?

YES

Check if

R203~R210, R149 are

ok?

YES

Refer to MICOM circuit.

2

Refer to power(SMPS).

NOCheck if the

power part of the frontis ok?

YES

Refer to MICOM circuit.NOCheck if the remote

control waveform of CN302pin11 is ok?

YES

Check RM circuit

NOCheck if RC01voltage is ok(5V)?

YES

Resolder or Replace RC01.

7/25/2019 LG HT964TZ.pdf

13/71

2-4

4. System operation flow

YES

YES

YES

Tray closed?

1. Initializes SERVO, DSP & RISC registers.

2. Write RISC code to SDRAM.3. Reset RISC.

Show LOGO.

Tray close to closed position.

SLED at innerside?

RecieveOPEN/ CLOSE

Key?

ReceiveCLOSE Key?

SLED moves to inner position.

1. Judge whether have disc and disc type.2. Jump to related disc reading procedure.

1. Execute Pressed Key & IR Key.

2. System operation routine loop.

NO

NO

NO

NO

YES

1. Stop Playback & Open Tray.2. Display tray open message & LOGO.

POWER ON.

7/25/2019 LG HT964TZ.pdf

14/71

2-5

5. Test & debug flow

Check the POWER PART.NO

Check the POWER PART.NO

YES

Check theAC voltage Power PCBA (110V

or 220V).

Check the regulators or diode.NO

1. Check 27MHz system clock.2. Check system reset circuit.

3. Check FLASH R/W enable signal PRD,

RWR.

4. Check FLASH Memory related circuit.

NO

Replace FLASH.

NO

YES

Are theDC Voltage outputs OK? (-34V, -28V, -32V, 12V,

3.5V, 5.6VA, 5V, 7V).

YES

Are 3.3V and5V DC outputs normal on main

PCBA?

YES

YES

Update

FLASH successfully?

YES

Switch on the Power PCBA.

TEST.

A

7/25/2019 LG HT964TZ.pdf

15/71

2-6

NOCheck connection lines

between FLASH & MT1389MH

and the FLASH access time

whether is suitable or not.

NO

YES

YES

YES

YES

Check AV cable

connection to TV set.

YES

YES

YES

Flash

Memory operates

properly?

Check connection lines

between SDRAM(IC503) &

MT1389MH and the SDRAMis damaged.

NOSDRAM

works properly?

Check the related circuit of

MT1389MH IC501 Pins138,

142, 144, 145.

NOMT1389MH

VIDEO outputs

properly?

Show LOGO?

NO Check the load OPEN &

CLOSE switch.

NO

Check AV cable connection

between main PCBA andloader. (MECHA)

YES

YES

YES

Normal

OPEN_SW,

CLOSE_SW

signal?

Check the Tray control IO pins

on MT1389MH.

NONormal

TROPEN & TRCLOSE

signal?

Check the Tray control MOTOR

& SERVO circuit IC400.

NONormal

LOAD+ & LOAD-

signal?

Does Traymove inside when it

is not at closedposition?

Power On.

A

B

7/25/2019 LG HT964TZ.pdf

16/71

2-7

NO Check the connection line ofM_STBY.

NO

YES

YES

YES

Check the cable connection

with MECHA.

Do not put in disc

and close tray.

YES

YES

YES

Motor

Driver M_STBY

pin is high?


SLD.

NOMotor

Driver M_STBY

pin is High?

Check the amp circuit on

motor driver.

NOSLED+ and

SLED- output

properly?

Doesthe SLED move to innerside when it is at outer

position?

NO Check Focus connection on

MT1389MHand motor driver.

NO

Check cable connection withpick-up head.

YES

YES

Proper

Focus outputs

to motor driver?

Check the amp circuit on motor

driver.

NOProper F+ & F-

outputs?

Optical Lenshas movements forsearching Focus?

B

C

7/25/2019 LG HT964TZ.pdf

17/71

2-8

NO

NO

Check the laser power circuit

on MT1389MH and

connecting to power

transistor.(Q403, Q405)

YES

YES

YES

YES

YES

YES

Check cable connectionbetween transistor output and

pick-up head.

Laser off.

Check the RF connectionbetween AM5890 and MT1389MH.

YES

YES

DVDLD or

CDLD outputproperty?

Check the related circuit on

laser power transistor.

NO

NOCollector

voltage of power transistor

is OK?(Q403, Q405)

Laser

turns on when

reading disc?

Put disc in?

Check the cable connection

between spindle and main

PCB.

YES

YES

Check the spindle control amp

circuit of motor driver.

SPNP& SPNN output

properly?

NO Check the SPINDLE relatedcircuit on MT1389MH.

Proper

SPINDLE signal on

MT1389MH.Does spindle rotate?

NO Check the related circuit on

MT1389MH RF signal.

NO

NO

NOProper

RF signal on

MT1389MH.

Disc ID is correct?

C

D

7/25/2019 LG HT964TZ.pdf

18/71

2-9

Check connections between

MT1389MH and pick-up head.


MT1389MH CD_DVDCT.


MT1389MH.

Check the TRACK connection

on MT1389MH and motor driver.

Check the tracking control amp

circuit on motor driver.

NO NO

YES

YES

YES

Check CD_DVDCT connectionbetween AM5890 and

MT1389MH.

Check cable connectionon pick-up head.

YES

YES

Proper

signals on A, B, C,

D of MT1389MH.

NOProper

CD_DVDCT signal on

MT1389MH.

Focus on ok?

NODisc Playback?

NO NO

NO

NO

YES

Proper

CD_DVDCT signal onMT1389MH.

YES

Proper

TRACK signalon MT1389MH.

YES

T+ & T- output

properly?

Track On OK?

D

YES

E

Check RF signal waveform.

7/25/2019 LG HT964TZ.pdf

19/71

2-10

NOCheck connection between

IC601 BCK, LRCK, ADATA0,ADATA1, ADATA2(Pins19, 20,

23, 24, 25).

YES

YES

Check Digital Amp circuit

(IC701, IC702, IC703, IC704).

YES


PWM.(Check Audio out

Pins 54, 55, 58, 59, 61, 62, 67,

68, 70, 71, 74, 75)

NO

NO

YES

PWM IC

received correct data

stream?

Normal

PWM IC out?(IC601).

Normal Audio

output when disc

playback?

E

TEST END.

7/25/2019 LG HT964TZ.pdf

20/71

2-11

6. AMP Protection

OK.NO

YES

"PROTECTION"appears continuously on the FLD.

Replace IC101.NO

YES

Is the IC101 pin53

"LOW" signal(0V)?

Replace the Q703, Q704 and Q705.NO

YES

Is the Q703, Q704 and

Q705 normal?

YES

YES

After unplug power cord, connect again.

YES

Power on.

"PROTECTION" appears on the FLD.

Replace TI AMP IC(IC701, IC702, IC703, IC704)

7/25/2019 LG HT964TZ.pdf

21/71

2-12

7. AUDIO -COM Circuit(DVD & AMP)

Check DVD Module.

Check SMPS.

OK

YES

Power On.

Does

CD/DVD appear at

FLD?

YES

NODoes

it appear DVD Error

at FLD?

Does AV1,TV AUDIO, AV1 OPT and

FM 87.5 appearat FLD.

Does

Reading appear

at FLD?

YES

Doesno Disc or Time

appear atFLD?

YES

Checkif DVD/CD insert is

OK.

Check Power.

YES

YES

YES

Replace IC101.

YESNO

NO

NO

NO

Refer to SMPS.

Refer to oscillator circuit.

Check IC101 Pin29

reset waveform.

NO

YES

Check 5V line.

Check power section

circuit.

NO

NO

NO

NO

NO

Check

power part of Main

B/D.

Check

oscillator of

X100.

Check

if IC101 Pin29

is high.

YES

YES

YES

Check ifIC101 Pins 14, 40, 55, 89

are high(5V).

Check

if IC101 Pin58

is high.

YES

7/25/2019 LG HT964TZ.pdf

22/71

2-13

DETAILS AND WAVEFORMS ON SYSTEM TEST AND DEBUGGING

1. SYSTEM 27MHz CLOCK,RESET,FLASH R/W SIGNAL

2) MT1389MHreset is high active.

4

IC501

1) MT1389MHmain clock is at 27MHz(X500)

1

FIG 1-1

1

FIG 1-2

Power Cord in

2

3

4

2

IC101

P_CTL

RESET_IN

DVD_RST

3

IC501

7/25/2019 LG HT964TZ.pdf

23/71

2-14

3) Flash R/W enable signal during download(Downloading)

5

2. SDRAM CLOCK

7

1) MT1389MHmain clock is at 27MHz(X500)

FIG 1-3

5

6

SF_DI

SF_DO

DCLK = 93MHz, Vp-p=2.2, Vmax=2.7V

FIG 2-1

7

SDCLK

6

7/25/2019 LG HT964TZ.pdf

24/71

2-15

3. TRAY OPEN/CLOSE SIGNAL

1) Tray open/close waveform 2) Tray close waveform

3) Tray open waveform

8

9

10

11

FIG 3-3

8

9

10

11

OPENSW

CLOSESW

OPEN

CLOSE

FIG 3-1

8

9

10

11

OPENSW

CLOSESW

OPEN

CLOSE

FIG 3-2

8

9

10

11

OPENSW

CLOSESW

OPEN

CLOSE

7/25/2019 LG HT964TZ.pdf

25/71

2-16

14

15

4. SLED CONTROL RELATED SIGNAL (NO DISC CONDITION)

12

13

FIG 4-1

12

13

14

15

SLD

M-STBY

SL+

SL-

7/25/2019 LG HT964TZ.pdf

26/71

2-17

6. LASER POWER CONTROL RELATED SIGNAL(NO DISC CONDITION)

5. LENS CONTROL RELATED SIGNAL(NO DISC CONDITION)

16

17

18

FIG 6-1

19

20

21

19

2120

IC501

FIG 5-1

16

17

18

FOD

F+

F-

MDI1

CDLD

DVDLD

7/25/2019 LG HT964TZ.pdf

27/71

2-18

7. DISC TYPE JUDGEMENT WAVEFORMS

22

24

23

IC501

23 : This signal can see using special debug program

FIG 7-1 (DVD)

22

23

24

F+

PU_DET

RF

FIG 7-2 (DVD)

22

23

24

F+

PU_DET

RF

7/25/2019 LG HT964TZ.pdf

28/71

2-19

FIG 7-3 (CD)

22

23

24

F+

PU_DET

RF

FIG 7-4 (CD)

22

23

24

F+

PU_DET

RF

22

24

23

IC501


7/25/2019 LG HT964TZ.pdf

29/71

2-20

8. FOCUS ON WAVEFORMS

26

27

28

25

IC501


FIG 8-1 (DVD)

25

26

27

28

PU_DET

FOD

F+

F-

FIG 8-2 (CD)

25

26

27

28

PU_DET

FOD

F+

F-

7/25/2019 LG HT964TZ.pdf

30/71

2-21

29

31

30

9. SPINDLE CONTROL WAVEFORMS (NO DISC CONDITION)

FIG 9-1

29

30

31

SPIND

SP-

SP+

7/25/2019 LG HT964TZ.pdf

31/71

2-22

34

35

33

10. TRACKING CONTROL RELATED SIGNAL(System checking)

32

IC501


FIG 10-1(DVD)

32

33

34

35

PU_DET

TRO

T-

T+

FIG 10-2(CD)

32

33

34

35

PU_DET

TRO

T-

T+

7/25/2019 LG HT964TZ.pdf

32/71

2-23

11. MT1389MH VIDEO OUTPUT WAVEFORMS

1) Full colorbar signal(COMPOSIT)

FIG 11-1

36

CVBS

2) Y

FIG 11-2

37

37

IC501

Y_G

36

IC501

FIG 12-1

12. AUDIO OUTPUT FROM PWM IC

4038

39

IC501

1) Audio related Signal

ASDATA3 ADATA0

BCK

LRCK

38

39

40

7/25/2019 LG HT964TZ.pdf

33/71

2-24

13. DVD & AMP WAVEFORMS MT1389MH

4142

1)

FL+ : R705 TP601

or

FL- : R710 TP602

41

3)

WF- : R745 TP605

or

WF+ : R748 TP606

43

2)

RL+ : R718 TP603

or

RL- : R722 TP604

42

43

7/25/2019 LG HT964TZ.pdf

34/71

2-25

5)

FR+ : R775 TP611

or

FR- : R780 TP612

45

4)

C+: R731 TP609

or

C- : R736 TP610

44

6)

RR+ : R788 TP607

or

RR- : R792 TP608

46

44

45 46

7/25/2019 LG HT964TZ.pdf

35/71

2-26

7/25/2019 LG HT964TZ.pdf

36/71

WIRING DIAGRAM

SCART

FRONT PCB

VFD

SMPS PCB14PIN

15PIN

USB PTB 2 MIC

MIC PCB

SPDIF

9 PIN

HDMIOUT

HDMIIN

iPodiPod

20PIN

Tuner

1

4PIN

13 PIN

FAN

MD

I/O Bd

SPK Terminal

20PIN

15PIN

MAIN PCB

2 PIN

11PIN

11PIN

Wireless Tx

6 PIN

TOUCH

20PIN

20PIN

6 PIN

13 PIN

CN402

CN602

PN106

CN201

CN250

CN902

CN903

CN102

CN302

CN603

CN303

CN201

CN401

CN103

CN202

CN204

A/V IN/OUT

23PIN

CABLE 3(FFC, 13 PIN)




CABLE 2(FFC, 6 PIN)

WIRELESS OPTIONAL PART

WIRING DIAGRAMHT96

2009. 01. 2

2-27 2-28

7/25/2019 LG HT964TZ.pdf

37/71

OVERALL BLOCK DIAGRAM

IC601

PWMMODULATOR(PS9830)

IC601

PWM

MODULATOR

(PS9830)

TAS5352

Power Amp(IC701~704)

TAS5352

Power Amp(IC701~704)

FL

FR

RL

RR

C/T

S/W

IC501

MT1389MH(176PIN)

FL+/-, FR+/-

RL+/-, RR+/-CENTER+/-

WOOFER+/-

AMP BOARDMAIN BOARD

PICK-UPPICK-UPIC400

Motor

Driver

IC400Motor

Driver

IC101

AUDIO

MICOM(100Pin)

IC101

AUDIO

MICOM(100Pin)

IC503SDRAM

IC503SDRAM

IC502FLASH

IC502FLASH

IC504EEPROM

IC504EEPROM

DB[0-15]

DMA[0-10]

SCL

SDA

SCL

SDA

MotorMotor

OPEN/CLOSEFOCUS/SLED

SPINDLE/TRACKING

F+/-, T+/-

SLED+/-SPINDLE+/-LOAD+/-

MD_DVD, MD_CDLD_DVD, LD_CDVR_DVD, VR_CD

A, B, C, D, E, F, RF

27 MHz

X60112.288 MHz

LRCLK, BCLKFRONT(ADATA0)REAR(ADATA1)C/W(ADATA2)D/M(ADATA3)

X1009.8304 MHz

DVD_TXDVD_RESETDVD_RX

9830_RESET

9830_CLK

9830_DAT

LRCLK, BCLK

MCLK

TAS5352_PDN

TAS5352_SD

5345_DATA

D+, D-

VFDVFD

ET16315

VFDDRIVER

ET16315VFD

DRIVER

6315_DO6315_DI

6315_CLK

6315_STB

GR[1-12]SG[1-16]

IC201CS5346(ADC)

IC201CS5346(ADC)

Aux-IN

TUNER

Portable

IPOD

MCLK,BCLKLRCLK,DATA

12bitVIDEO

12bitVIDEO

MCLK,BCLKLRCLK,DATA12bit

12bit

RX SPDIF

SPDIF

SW_SPDIF

AUX AUDIO

TUNER AUDIO

PORT AUDIO

IPOD AUDIO

TMDS

TMDS HDMITX

HDMITX

HDMIOUT

HDMIIN

HDMI

RX

HDMI

RX

TX/RXSW

TX/RXSW

SPDIF

SW

SPDIFSW

OPTICALIN

USB

SCART AUDIO

MICMIC L/R

IC2A1

S4308

Component

Composite

Y, Pb, Pr

IC250

MM1692

SCART

R, G, B

Y/G, Pb/B, Pr/RY, C

MPEG Composite

W/TX

Module RST

MCLK, BCLK, LRCK, DATA, SCL, SDA

27 MHz

TOUCH ICTOUCH IC

BLOCK DIAGRAMHT964

2009. 01. 29

2-29 2-30

7/25/2019 LG HT964TZ.pdf

38/71

A

1

2

3

4

5

6

7

8

9

10

11

12

B C D E F G H I J K L M N O P Q R S

SMHT964/HT

(3H266W/L/H/WCPZ33190-5

2009. 02

NOTES) SymboldenotesACground.

NOTES) SymboldenotesDCchassis ground.

N OT E) W ar ni ngNOTE) Partsthatare shadedarecriticalNOTE) Withrespecttorisk offireorNOTE) electricialshock.

CIRCUIT DIAGRAMS1. SMPS(POWER) 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. Voltages are DC-measured with a digital during Play mode.

2-31 2-32

7/25/2019 LG HT964TZ.pdf

39/71

2. MPEG CIRCUIT DIAGRAM

A

1

2

3

4

5

6

7

8

9

10

11

12

B C D E F G H I J K L M N O P Q R S T

1

5

6

1921

20 23 425 32

7

36

37

38

40

39

WAVEFORM

MPEGHT904/HT964/HT994

EBY57656101(#1) REV 10.22009. 05. 27

2-33 2-34

7/25/2019 LG HT964TZ.pdf

40/71

A

1

2

3

4

5

6

7

8

9

10

11

12


WAVEFORM

12

8

9

10

24

16

26

11

14

15

17

22

27

18

28

13

33

2930

31

34

35

SERVHT904/HT964/HT9

EBY57656101(#2) REV 102009. 05. 2

3. SERVO CIRCUIT DIAGRAM

2-35 2-36

7/25/2019 LG HT964TZ.pdf

41/71

A

1

2

3

4

5

6

7

8

9

10

11

12


I/OHT904/HT964/HT994

EBY57656101(#3) REV 10.22009. 05. 27

4. I/O CIRCUIT DIAGRAM

2-37 2-38

7/25/2019 LG HT964TZ.pdf

42/71

A

1

2

3

4

5

6

7

8

9

10

11

12


WAVEFORM

2

3

MICOHT904/HT964/HT9

EBY57656101(#4) REV 102009. 05. 2

5. MICOM CIRCUIT DIAGRAM

2-39 2-40

7/25/2019 LG HT964TZ.pdf

43/71

6. HDMI RX CIRCUIT DIAGRAM

A

1

2

3

4

5

6

7

8

9

10

11

12


HDMI RXHT904/HT964/HT994

EBY57656101(#5) REV 10.22009. 05. 27

2-41 2-42

7/25/2019 LG HT964TZ.pdf

44/71

7. HDMI TX CIRCUIT DIAGRAM

A

1

2

3

4

5

6

7

8

9

10

11

12


HDMI THT904/HT964/HT9

EBY57656101(#6) REV 102009. 05. 2

2-43 2-44

7/25/2019 LG HT964TZ.pdf

45/71

A

1

2

3

4

5

6

7

8

9

10

11

12


I-POD REARHT904/HT964/HT994

EBY57656101(#7) REV 10.22009. 05. 27

8. I-POD REAR CIRCUIT DIAGRAM

2-45 2-46

7/25/2019 LG HT964TZ.pdf

46/71

9. AMP CIRCUIT DIAGRAM

A

1

2

3

4

5

6

7

8

9

10

11

12


WAVEFORM

41 42 43

44 45 46

AMHT904/HT964/HT9

EBY57656101(#8) REV 102009. 05. 2

2-47 2-48

7/25/2019 LG HT964TZ.pdf

47/71

10. DSP & PWM CIRCUIT DIAGRAM

A

1

2

3

4

5

6

7

8

9

10

11

12


DSP&PWMHT904/HT964/HT994

EBY57656101(#9) REV 10.22009. 05. 27

2-49 2-50

7/25/2019 LG HT964TZ.pdf

48/71

11. I/O JACK CIRCUIT DIAGRAM

A

1

2

3

4

5

6

7

8

9

10

11

12


I/O JAHT964/HT

EBY57025201 REV

2009. 02

2-51 2-52

7/25/2019 LG HT964TZ.pdf

49/71

12. TOUCH CIRCUIT DIAGRAM

A

1

2

3

4

5

6

7

8

9

10

11

12


TOUCH KEYHT964

EBY57656201 REV 3.22009. 01. 29

2-53 2-54

7/25/2019 LG HT964TZ.pdf

50/71

13. MIC & USB CIRCUIT DIAGRAM

A

1

2

3

4

5

6

7

8

9

10

11

12


MIC&UHT

EBY57847101 REV2009. 02

2-55 2-56

7/25/2019 LG HT964TZ.pdf

51/71

A

1

2

3

4

5

6

7

8

9

10

11

12


TIMERHT964

EBY57656501 REV 9.12009. 02. 19

POWER KEY

HT964EBY57656601 REV 6.12009. 01. 29

14. FRONT CIRCUIT DIAGRAM

KEY PARTTIMER PART

2-57 2-58

7/25/2019 LG HT964TZ.pdf

52/71

CIRCUIT VOLTAGE CHART1. ICs on BOARD

2-59 2-60

MAIN

IC100 (EEPROM, M24C16-WMN6TP)

Pin No. SPEC DVD PB (V)

8 5 4.94

IC101 (A-Micom) LC87F5N62BVU

Pin No. SPEC VOLT

14 5.0 4.94

40 5.0 4.94

55 5.0 4.94

89 5.0 4.94

IC104 (KIA278R33PI)

Pin No. SPEC VOLT

1 5.0 5.0

3 3.3 3.3

IC105 (CP2.0B)


5 3.3 3.23

IC106 (KIA78R05PI)

Pin No. SPEC VOLT

1 5.6 5.6

2 5 5

IC201 (ADC, CS5346)

Pin No. SPEC VOLT

5 3.3 3.24

14 5 5.05

36 3.3 3.26

46 3.3 3.24

IC202 (DIR, CS8422)


3 3.3 3.24

19 3.3 3.24

22 3.3 3.24

IC203 (SW, NLASB3157DFT2G)


5 3.3 3.22

IC204 (DIR, CS8422)


3 3.3 3.22

19 3.3 3.22

22 3.3 3.22

IC250 (SCART, MM1692XVBE)

Pin No. SPEC VOLT

1 5.0 5.06

5 5.0 5.06

IC255 (IPOD, MM1225XFBE)

Pin No. SPEC VOLT

6 5.0 5.06

IC2A1 (MIC, S4308)

Pin No. SPEC VOLT

6 12.0 11.4

IC400 (MOTOR, AM5890)

Pin No. SPEC VOLT

8 5.0 5.05

19 5.0 5.05

IC501 (MPEG, MT1389MH)


1 1.8 1.88

2 3.3 3.22

12 3.3 3.22

22 3.3 3.22

25 1.8 1.88

38 3.3 3.24

57 3.3 3.24

67 3.3 3.24

79 1.8 1.87

92 3.3 3.24

101 3.3 3.24

109 1.8 1.87

114 3.3 3.24

119 1.8 1.87

125 3.3 1.88

134 3.3 3.22

139 3.3 3.22

141 3.3 3.22

150 3.3 3.22

151 3.3 3.22

163 3.3 3.22

164 3.3 3.22

165 1.8 1.88

IC502 (FLASH, MX25L1605DM2I)


8 3.3 3.22

IC503 (SDRAM/PROMOS, V54C3128164VBI6)


1 3.3 3.22

3 3.3 3.25

9 3.3 3.24

14 3.3 3.25


27 3.3 3.24

43 3.3 3.24

49 3.3 3.24

IC504 (EEPROM, KS24C021CS)


8 3.3 3.24

IC542


8 3.3 3.25

IC601 (PWM, PS9830)


4 3.3 3.21

10 3.3 3.21

22 3.3 3.21

29 3.3 3.21

39 3.3 3.21

47 3.3 3.21

56 3.3 3.21

65 3.3 3.21

72 3.3 3.21

91 3.3 3.21

94 3.3 3.21

IC602 (DSP, CS48560)


12 3.3 3.22

24 3.3 3.22

37 3.3 3.22

48 3.3 3.22

16 1.8 1.85

28 1.8 1.85

42 1.8 1.85

IC701 (AMP, TAS5352)


26 35 35.44

27 35 35.43

32 35 35.43

35 35 35.44

40 35 35.43

41 35 35.43



26 35 35.44

27 35 35.43


32 35 35.43

35 35 35.44

40 35 35.43

41 35 35.43



26 35 35.44

27 35 35.43

32 35 35.43

35 35 35.44

40 35 35.43

41 35 35.43



26 35 35.44

27 35 35.43

32 35 35.43

35 35 35.44

40 35 35.43

41 35 35.43

IC801 (EEPROM, S-24CS02AFJ)


8 5 4.93

IC803 (HDMI Rx, SIL9025)


5 3.3 3.31

16 3.3 3.31

22 1.8 1.77

23 1.8 1.77

26 1.8 1.78

35 1.8 1.77

37 3.3 3.31

38 1.8 1.78

42 3.3 3.31

46 3.3 3.3

50 3.3 3.3

55 3.3 3.3

57 3.3 3.3

61 3.3 3.3

65 3.3 3.3

69 3.3 3.3

74 1.8 1.77

76 1.8 1.77


79 1.8 1.77

89 3.3 3.3

92 1.8 1.77

94 1.8 1.77

98 1.8 1.77

99 3.3 3.3

105 1.8 1.77

109 1.8 1.77

114 1.8 1.77

122 3.3 3.3

128 1.8 1.77

134 3.3 3.3

139 1.8 1.77

IC850 (KIA78R33F)

Pin No. SPEC VOLT

1 5.0 4.99

3 3.3 3.29

IC851 (HDMI SW, SiI9034)


12 1.8 1.77

14 3.3 3.3

28 1.8 1.77

32 1.8 1.77

38 1.8 1.77

42 1.8 1.77

44 3.3 3.3

45 5 5.06

53 3.3 3.3

55 1.8 1.77

64 1.8 1.77

66 3.3 3.3

76 1.8 1.77

89 3.3 3.29

99 1.8 1.77

IC852 (LM1117_1.8V)

Pin No. SPEC VOLT

2 1.8 1.77

3 3.3 3.3

IC853


6 3.3 3.3

12 3.3 3.3

19 3.3 3.3

Pin No. SPEC DVD PB

25 3.3 3.3

40 3.3 3.3

46 3.3 3.3

49 3.3 3.3

55 3.3 3.3

61 3.3 3.3

FRONT

IC301 (VFD, PT6315)

Pin No. SPEC VOL

13 5.0 5.08

43 5.0 4.99

7/25/2019 LG HT964TZ.pdf

53/71

2-61 2-62

No Value (uF) Vol tage_Spec posit ive (+) negat ive ( -) vol tage

C101 10uF 16 4.94 0.00 4.94

C106 100uF 16 5.00 0.00 5.00

C116 47uF 16 4.95 0.00 4.95

C117 10uF 16 3.90 0.00 3.90

C120 47uF 16 4.95 0.00 4.95

C123 100uF 16 3.30 0.00 3.30

C133 100uF 16 5.04 0.00 5.04

C201 10uF 16 2.50 2.16 0.34

C202 10uF 16 2.51 2.24 0.27

C203 10uF 16 2.50 2.22 0.28

C204 10uF 16 2.10 2.10 0.00

C205 10uF 16 2.51 2.23 0.28

C206 10uF 16 2.50 2.22 0.28C207 10uF 16 2.51 2.24 0.27

C208 10uF 16 2.51 2.19 0.32

C211 10uF 16 2.41 0.00 2.41

C212 47uF 16 4.83 0.00 4.83

C213 10uF 16 5.05 0.00 5.05

C214 10uF 16 0.52 0.51 0.01

C215 10uF 16 0.52 0.42 0.10

C223 10uF 16 3.24 0.00 3.24

C224 10uF 16 3.24 0.00 3.24

C228 10uF 16 2.47 0.00 2.47

C229 10uF 16 3.24 0.00 3.24

C275 10uF 16 2.99 2.63 0.36

C276 10uF 16 2.38 2.21 0.17

C278 100uF 16 5.04 0.00 5.04

C284 47uF 16 5.03 0.00 5.03

C285 22uF 16 2.51 0.00 2.51

C286 470uF 6.30 2.41 1.44 0.97

C288 470uF 6.30 1.70 0.00 1.70

C289 470uF 6.30 2.34 0.00 2.34

C290 470uF 6.30 2.34 0.00 2.34C2A3 22uF 16 1.95 0.00 1.95

C2A5 100uF 16 1.99 0.84 1.15

C2A7 1uF 50 0.00 0.00 0.00

C2A9 100uF 16 11.07 0.00 11.07

C2C2 10uF 16 3.25 0.00 3.25

C2C4 10uF 16 3.22 0.00 3.22

C2C6 10uF 16 2.48 0.00 2.48

C3D2 47uF 16 4.95 0.00 4.95

C417 47uF 6.30 3.19 2.27 0.92


C418 47uF 6.30 3.19 3.04 0.15

C419 100uF 6.30 3.19 0.00 3.19

C420 100uF 6.30 5.03 0.00 5.03

C421 100uF 6.30 5.03 0.00 5.03

C422 100uF 6.30 1.89 0.00 1.89

C423 100uF 6.30 5.04 0.00 5.04

C426 47uF 16 2.05 0.00 2.05

C427 47uF 16 1.43 0.00 1.43

C553 10uF 25 1.31 1.04 0.27

C554 10uF 25 1.29 1.06 0.23

C555 47uF 16 3.24 0.00 3.24

C556 47uF 6.30 1.88 0.00 1.88

C557 47uF 6.30 1.88 0.00 1.88C558 47uF 16 3.22 0.00 3.22

C559 47uF 6.30 1.87 0.00 1.87

C560 47uF 6.30 1.57 0.00 1.57

C561 47uF 6.30 1.36 0.00 1.36

C563 10uF 25 3.21 0.00 3.21

C564 10uF 25 3.25 0.00 3.25

C565 10uF 25 3.25 0.00 3.25

C618 10uF 16 1.92 0.00 1.92

C620 10uF 16 1.93 0.00 1.93

C622 220uF 6.30 3.21 0.00 3.21

C625 10uF 16 1.85 0.00 1.85

C630 10uF 16 3.22 0.00 3.22

C652 220uF 6.30 1.93 0.00 1.93

C707 47uF 25 11.79 0.00 11.79

C749 47uF 25 11.79 0.00 11.79

C785 47uF 25 11.79 0.00 11.79

C7B5 47uF 25 11.78 0.00 11.78

C7F7 10uF 16 11.77 0.00 11.77

C7F9 47uF 25 11.76 0.00 11.76

C7G3 47uF 25 11.77 0.00 11.77C801 10uF 25 4.94 0.00 4.94

C852 47uF 16 3.31 0.00 3.31

C854 10uF 25 3.31 0.00 3.31

C858 10uF 25 3.31 0.00 3.31

C861 10uF 25 3.31 0.00 3.31

C863 10uF 25 3.31 0.00 3.31

C866 10uF 25 1.87 0.00 1.87

C875 10uF 25 1.78 0.00 1.78

C876 10uF 25 3.31 0.00 3.31


C878 10uF 25 1.78 0.00 1.78

C880 10uF 25 1.78 0.00 1.78

C882 10uF 25 3.31 0.00 3.31

C888 10uF 25 1.78 0.00 1.78

C894 10uF 25 5.03 0.00 5.03

C130 10uF 16 3.23 0.00 3.23

C3A2 47uF 50 0.00 -27.60 27.6V

C307 47uF 16 -21.60 -24.56 2.96V

C3A1 47uF 16 5.00 0.00 5V

C309 220uF 6.3 4.91 0.00 4.91V

C2D1 220uF 6.3 5.03 0.00 5.03V

C2D3 4.7uF 50 1.62 1.33 0.29V

C2D4 4.7uF 50 1.56 1.01 0.55V

ZD2M1 (BZX84-C5V1)

Pin No. VOLT

1 -0.01 V

2 -0.28 V

3 0.02 V

ZD2M2 (BZX84-C5V1)

Pin No. VOLT

1 -0.01 V

2 -0.13 V

3 -0.01 V

ZD302 (BZX84-C5V1)

Pin No. VOLT

1 0 V

2 0 V

3 5.07 V

ZD500 (BZX84-C5V1)

Pin No. VOLT

1 -0.01 V

2 -0.23 V

3 0 V

D801 (DAN202K)

Pin No. VOLT

1 -0.01 V

2 -0.23 V

3 0 V

2. CAPACITORS on BOARD

3. DIODES on BOARD

7/25/2019 LG HT964TZ.pdf

54/71

PRINTED CIRCUIT BOARD DIAGRAMS1. MAIN P.C. BOARD DIAGRAM (TOP VIEW)

2-63 2-64

7/25/2019 LG HT964TZ.pdf

55/71

MAIN P.C. BOARD DIAGRAM (BOTTOM VIEW)

2-65 2-66

7/25/2019 LG HT964TZ.pdf

56/71

2-67 2-68

2. SMPS P.C. BOARD DIAGRAM (TOP VIEW)

NOTE: WarningParts that are shaded are critical Withrespect to risk of fire or electrical shock.

NOTE: WarningParts that are shaded are critical Withrespect to risk of fire or electrical shock.

SMPS P.C. BOARD DIAGRAM (BOTTOM VIEW)

7/25/2019 LG HT964TZ.pdf

57/71

4. FRONT P.C. BOARD DIAGRAM

TIMER PART

TIMERIMERHT964T964EAX58008805AX58008805

TIMERHT964EAX58008805

KEY PART

PWR KEYWR KEY

HT964T964

EBY58009204BY58009204

PWR KEY

HT964

EBY58009204

2-69 2-70

3. TOUCH P.C. BOARD DIAGRAM

MIC & USBIC USBHT964T964EAX58009305AX58009305

MIC & USBHT964EAX58009305

MIC & USB PART

7/25/2019 LG HT964TZ.pdf

58/71

7/25/2019 LG HT964TZ.pdf

59/71

012

012

037

012A

019442

442

A02 A01

A03

001

002

003439

018

013

017

014

020

016

440

015

015B

015A

435

026

010

DECK MECHANISM EXPLODED VIEW (DP-15A)

3-3 3-4

7/25/2019 LG HT964TZ.pdf

60/71

3-5

SPEAKER CABLE

811 RCA CABLE VIDEO(1WAY)

818 PORTABLE IN CABLE

900 REMOTE CONTROL

808 BATTERY

801 OWNER'S MANUAL

825 FM WIRE ANTENNA

824 AM LOOP ANTENNA

804 BAG

803 PACKING, CASING

803 PACKING, CASING

802 BOX

823 HDMI CABLE

805 CLEAR SHEET

PACKING ACCESSORY SECTION

WIRE80

WIRE81

WIRE70

WIRE90

WIRE60

WIRE61

FRONT LEFT 3M

FRONT RIGHT 3M

CENTER 3M

SUBWOOFER 3M

REAR LEFT 10M

REAR RIGHT 10M

7/25/2019 LG HT964TZ.pdf

61/71

3-6

755A 755B

757

A700

757753

757

757

754

756

750

752

751

751

757

757

757

SPEAKER SECTION

1. CENTER SPEAKER (SH94TZ-C)

7/25/2019 LG HT964TZ.pdf

62/71

3-7

2. FRONT/REAR SPEAKER (SH94TZ-F/S)

851R :Rear

851F :Front

:Rear SPK Top

:Front SPK Top

850

853854

865

856

857

858

859860

861

865

862

865

863

865

864

852

865

865866

865

866

866851R

851F

855A

855B

855C

A800F

A800B

A800R

7/25/2019 LG HT964TZ.pdf

63/71

3-8

7/25/2019 LG HT964TZ.pdf

64/71

3. PASSIVE SUBWOOFER (SH94TZ-W)

954B

954A

950

955

956957

951

958

A900953

952

3-9

7/25/2019 LG HT964TZ.pdf

65/71

3-10

7/25/2019 LG HT964TZ.pdf

66/71

4-1

[CONTENTS]DECK MECHANISM PARTS LOCATIONS

Top View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

Top View(without Tray Disc) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

Bottom View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

DECK MECHANISM DISASSEMBLY 1. Main Base . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

1-1. Clamp Assembly Disc . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-31-1-1. Plate Clamp. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

1-1-2. Magnet Clamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

1-1-3. Clamp Upper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

2. Tray Disc . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

3. Base Assembly Sled . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

3-1. Gear Feed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

3-2. Gear Middle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

3-3. Gear Rack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

4. Rubber Rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

5. Frame Assembly Up/Down . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5

6. Belt Loading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5

7. Gear Pulley . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5

8. Gear Loading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5

9. Guide Up/Down . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5

10. PWB Assembly Loading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5

11. Base Main . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5

EXPLODED VIEW 1. DECK MECHANISM EXPLODED VIEW (DP-15A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6

SECTION 4. MECHANISM (DP-15A)

7/25/2019 LG HT964TZ.pdf

67/71

4-2

DECK MECHANISM PARTS LOCATIONS

Note

When reassembling, perform the procedure in

reverse order.

The Bottom on Disassembly column of above

Table indicates the part should be disassembled

at the Bottom side.

Top View(without Tray Disc)

Bottom View

Top View

Starting No.

1

1, 2

1, 2, 3

1, 2, 3, 4

1

1, 6

1, 2, 6

1, 2, 6, 8

1, 2, 6, 8, 9

1, 2, 7

1, 2, 7

1, 2

1, 2 ,13

1, 2, 13, 14

1, 2, 7, 12,

13, 14

1, 2, 13

1, 2, 7, 12, 13,

14, 15, 16, 17

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

Main Base

Clamp Assembly

Disc

Plate Clamp

Magnet Clamp

Clamp Upper

Tray Disc

Base Assembly Sled

Gear Feed

Gear Middle

Gear Rack

Rubber Rear

Frame Assembly

Up/Down

Belt Loading

Gear Pulley

Gear Loading

Guide Up/Down

PWB Assembly

Loading

Base Main

4 Screws,

1 Connector

1 Locking Tabs

1 Screw

1 Screw

1 Locking Tab

1 Locking Tab

1 Locking Tab

1 Hook

2 Screw

2 Locking Tabs

4-1

4-1

4-1

4-1

4-1

4-2

4-3

4-3

4-3

4-3

4-3

4-4

4-4

4-4

4-4

4-4

4-4

4-4

Bottom

Bottom

ProcedureParts Fixing Type

Fig-ure

Disass

embly

7/25/2019 LG HT964TZ.pdf

68/71

4-3

DECK MECHANISM DISASSEMBLY

1. Main Base (Fig. 4-1) 1-1. Clamp Assembly Disc 1) Place the Clamp Assembly Disc as Fig. (A)

2) Lift up the Clamp Assembly Disc in direction ofarrow(A).

3) Separate the Clamp Assembly Disc from the

Holder Clamp.

1-1-1. Plate Clamp

1) Turn the Plate Clamp to counterclockwise

direction and then lift up the Plate Clamp.

1-1-2. Magnet Clamp 1-1-3. Clamp Upper

2. Tray Disc (Fig. 4-2) 1) Insert and push a Driver in the emergency eject

hole(A) at the right side, or put the Driver on theLever(B) of the Gear Emergency and pull the

Lever(B) in direction of arrow so that the TrayDisc is ejected about 15~20mm.

2) Pull the Tray Disc until it is separated from the

Base Main completely.

MAIN BASE

TRAY DISC

BASE MAIN

LEVER

BASE MAIN

BOTTOM SIDE VIEW

PLATE CLAMP

MAGNET CLAMP

CLAMP UPPER

HOLDER

BASE MAIN

Fig. 4-2Fig. 4-1

(Fig. A)

DISC CLAMP ASSEMBLY

7/25/2019 LG HT964TZ.pdf

69/71

4-4

3. Base Assembly Sled (Fig. 4-3)1) Release 4 Screw(S2).

2) Disconnect the FFC Connector(C1)

3-1. Gear Feed

3-2. Gear Middle

3-3. Gear Rack

4. Rubber Rear (Fig. 4-3)

BASE PU

RUBBER DAMPER

RUBBER DAMPER

RUBBER DAMPER

Distinguish upper andlower sides(Assemble with care)

Distinguish upper andlower sides

(Assemble with care)

RUBBER DAMPER

GEAR RACK

GENERAL PICK UP ASSEMBLY

SPINDLE MOTOR ASSEMBLY

Fig. 4-3

(S2)(S2)

7/25/2019 LG HT964TZ.pdf

70/71

4-5

5. Frame Assembly Up/Down (Fig. 4-4) Note

Put the Base Main face down(Bottom Side) 1) Release the screw(S4) 2) Unlock the Locking Tab(L3) in direction of arrow

and then lift up the Frame Assembly Up/Down toseparate it from the Base Main.

Note

When reassembling move the Guide Up/Down

in direction of arrow(C) until it is positioned asFig.(C).

When reassembling insert (A) portion of the FrameAssembly Up/Down in the (B) portion of the GuideUp/Down as Fig.(B)

6. Belt Loading(Fig. 4-4) Note Put the Base Main on original position(Top Side)

7. Gear pulley (Fig. 4-4) 1) Unlock the Locking Tab(L4) in direction of arrow(B) and

then separate the Gear Pulley from the Base Main.

8. GEAR LOADING (FIG. 4-4)9. GUIDE UP/DOWN (FIG. 4-4) 1) Move the Guide Up/Down in direction of arrow(A) as

Fig.(A)

2) Push the Locking Tab(L5) down and then lift up theGuide Up/Down to separate it from the Base Main.

Note

When reassembling place the Guide Up/Down as Fig.(C)and move it in direction arrow(B) until it is locked by the

Locking Tab(L5). And confirm the Guide Up/Down as Fig.(A)

10. PWB Assembly Loading (Fig. 4-4) Note

Put the Base Main face down(Bottom Side) 1) Release 1 Screws(S5) 2) Unlock the Loading Motor (C2) from the Hook (H1) on

the Base Main.

3) Unlock 2 Locking Tabs(L6) and separate the PWBAssembly Loading from the Base Main.

11. Base Main(Fig. 4-4)

GEAR LOADING

GEAR PULLEY

BELT LOADING

PWB ASSEMBLY LOADING

BASE MAIN

GUIDE UP/DOWN

GUIDE UP/DOWN

GUIDE UP/DOWN

UP/DOWN FRAME ASSEMB LY

GUIDE UP/DOWN

BASE MAIN

(L6)

(L4)

(L6)

(H1)

(C2)

(S5)

(S4)

(S4)

(A)

(A)

(B)

(B)(C)

(L5)

FIG. (A)FIG. (B)

FIG. (C)

(A)

(B)

Fig. 4-4

SCREW INSERTIONTORGUE CONTROL

(800gf DOWN)

7/25/2019 LG HT964TZ.pdf

71/71

012

037

012A

442

A02 A01

A03

001

002

003439

018

013

017

014020

016

440

015

015B

015A

435

026010

DECK MECHANISM EXPLODED VIEW (DP-15A)

LG HT964TZ.pdf

Documents

Transcript of LG HT964TZ.pdf