P/NO : AFN75354522 DECEMBER, 2011

DVD HOME THEATER SYSTEMSERVICE MANUALMODEL: HT306PD (HT306PD, SH36PD-F/S/C/W)

CAUTIONBEFORE SERVICING THE UNIT, READ THE “SAFETY PRECAUTIONS”IN THIS MANUAL.

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

MO

DE

L: H

T306P

D (H

T306P

D, S

H36P

D-F

/S/C

/W)

SE

RV

ICE

MA

NU

AL

1-1

CONTENTS

SECTION 1 ........SUMMARY

SECTION 2 ........ELECTRICAL

SECTION 3 ........CABINET & MAIN CHASSIS

SECTION 4 ........MECHANISM (DP-15T)

SECTION 5 ........REPLACEMENT PARTS LIST

1-2

SECTION 1

SUMMARY

CONTENTS

SERVICING PRECAUTIONS .......................................................................................................................... 1-3

ESD PRECAUTIONS ....................................................................................................................................... 1-5

SERVICE INFORMATION FOR EEPROM .................................................................................................... 1-6

HOW TO UPDATE DVD & AUDIO MICOM PROGRAMS ........................................................................... 1-7

SPECIFICATIONS ............................................................................................................................................ 1-8

1-3

SERVICING PRECAUTIONS

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/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 surfaceIf there is dust on the lens surface, the dust should be cleaned away by using an air bush (such as used for 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 don’t allow contact with fingers or other exposed skin.

Magnet

How to hold the pick-up

Conductive Sheet

Cotton swab

Pressure

Pressure

1-4

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 magnet-ism 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 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 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 (1 MΩ)6) Care should be taken not to permit the laser pick-up to come in contact with clothing, in order to prevent

static 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 MΩ) Conductive

Sheet

Resistor(1 MΩ)

Armband

1-5

ESD PRECAUTIONS

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 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 areready 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 theprotective 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 OTHER SAFETY PRECAUTIONS.

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

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 THESERVICE PERSONNEL TO THE PRESENCE OF IMPORTANT SAFETY INFORMATION IN SERVICELITERATURE.

1-6

SERVICE INFORMATION FOR EEPROM

POWER ON

DVD LOGO Status (NO Disk status)

Remote control Pause key-->1-->4-->7-->2 in order.

Press number 0~9, Press characterA~F (1~6 for a while)

Use arrow key ( ) to move to appropriate position and make changes

Press pause key once

Change will be applied when powerOFF-->ON.

NAME

OPT 1 OPT 2 OPT 3 OPT 4 OPT 5 OPT 6 OPT 7 OPT 8 OPT 9 OPT A

HEX

F100C5AD0009A0225008

DETECT NEW EEPROM(OPTION EDIT SCREEN)

1-7

HOW TO UPDATE DVD & AUDIO MICOM PROGRAMS

1. The Whole Sequence 1) DVD program download. 2) Power cord out −> in. 3) Audio micom program download. 4) Remote control Pause key ‘ ’ + ‘1472’ for input options. 5) Enter into the system information for check the version, options and check sum. 6) Power off −> on.

Attention: After DVD program download, never input options and check the version before power cord out.

2. How to enter into System Information 1) Enter into SETUP menu in NO Disc. 2) Put on cursor [Highlight] 16:9 wide option of TV aspect in SETUP menu. 3) Press follow key in continuous using remote control. 1 −> 3 −> 9 −> 7 −> 1 −> 3 −> 9 −> ENTER

3. How to update program 3-1. How to update MTK DVD program 1) Change the fi lename to download as “LG_(MODEL NAME).ROM”. [Both Upper and Lower case In fi lename is possible] Ex.) HT306: “LG_HT306.ROM” 2) Copy the fi le 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 control. 5) Remove and reconnect the power cable when it changes to logo screen from upgrade information. Then the upgrade process is completed.

3-2. How to update AUDIO MICOM program 1) Change the fi lename to download as “(MODEL NAME)_(Version).HEX”. Only upper cases are permitted. Ex.) HT306: "HT306_0809262.HEX" 2) Copy the fi le to the root folder of USB storage. 3) Put the USB into the SET, and move to the USB function. Then the upgradeprocess will be started with the upgrade information. 4) If the upgrade process is complete, the set will be power off automatically with “Complete” message.

1-8

SPECIFICATIONS

• GENERALPower requirements Refer to main label.Power consumption Refer to main label.Dimensions (W x H x D) Approx. 360 x 62.5 x 313 mm without footNet Weight (Approx.) 2.9 kgOperating temperature 5 °C to 35 °C (41 °F to 95 °F)Operating humidity 5 % to 90 %

• OUTPUTSVIDEO OUT 1.0 V (p-p), 75 Ω, sync negative, RCA jack x 1COMPONENT VIDEO OUT (Y) 1.0 V (p-p), 75 Ω, sync negative, RCA jack x 1 (Pb)/(Pr) 0.7 V (p-p), 75 Ω, RCA jack x 2HDMI OUT (video/audio) 19 pin (Type A, HDMI™ Connector)ANALOG AUDIO IN 2.0 Vrms (1 kHz, 0 dB), 600 Ω, RCA jack (L, R) x 1PORT. IN 0.5 Vrms (3.5 mm stereo jack)

• SYSTEMLaser Semiconductor laser, wavelength: 650 nmSignal system Standard NTSC/PAL color TV systemFrequency response 20 Hz to 20 kHz (48 kHz, 96 kHz, 192 kHz sampling)Signal-to-noise ratio More than 80 dBHarmonic distortion 0.05 % at 1 WDynamic range More than 95 dBBus Power Supply (USB) DC 5 V 500 mA

• AMPLIFIERStereo mode 45 W + 45 W (3 Ω at 1 kHz)Surround mode Front 45 W + 45 W (3 Ω at 1 kHz) Center 45 W (3 Ω at 1 kHz) Surround 45 W + 45 W (3 Ω at 1 kHz) Subwoofer 105 W (4 Ω at 60 Hz)

• 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

• FRONT SPEAKER (LEFT/ RIGHT)Type 1 Way 1 SpeakerImpedance Rated 3 ΩInput Power 45 WMax. Input Power 90 WNet Dimensions (W x H x D) 260 x 1 020 x 68 mmNet Weight 2.64 kg

• REAR SPEAKER (LEFT/ RIGHT)Type 1 Way 1 SpeakerImpedance Rated 3 ΩInput Power 45 WMax. Input Power 90 WNet Dimensions (W x H x D) 103 x 111 x 94 mmNet Weight 0.33 kg

• CENTRE SPEAKERType 1 Way 1 SpeakerImpedance Rated 3 ΩInput Power 45 WMax. Input Power 90 WNet Dimensions (W x H x D) 200 x 103 x 88 mmNet Weight 0.43 kg

• SUBWOOFERType 1 Way 1 SpeakerImpedance Rated 4 ΩInput Power 105 WMax. Input Power 210 WNet Dimensions (W x H x D) 156 x 325 x 320 mmNet Weight 3.34 kg

2-1

SECTION 2

ELECTRICAL

CONTENTS

ELECTRICAL TROUBLESHOOTING GUIDE ............................................................................................... 2-21. POWER SUPPLY CIRCUIT .................................................................................................................... 2-22. FRONT CIRCUIT (1/2) ............................................................................................................................ 2-33. FRONT CIRCUIT (2/2) ............................................................................................................................ 2-44. SYSTEM OPERATION FLOW ................................................................................................................ 2-55. TEST & DEBUG FLOW .......................................................................................................................... 2-66. AMP PROTECTION .............................................................................................................................. 2-127. AUDIO μ-COM CIRCUIT(DVD & AMP) ................................................................................................ 2-13

DETAILS AND WAVEFORMS ON SYSTEM TEST AND DEBUGGING .................................................. 2-141. SYSTEM 27 MHZ CLOCK, RESET, FLASH R/W SIGNAL .................................................................. 2-142. SDRAM CLOCK .................................................................................................................................... 2-153. TRAY OPEN/CLOSE SIGNAL .............................................................................................................. 2-164. SLED CONTROL RELATED SIGNAL (NO DISC CONDITION) .......................................................... 2-175. LENS CONTROL RELATED SIGNAL (NO DISC CONDITION) .......................................................... 2-186. LASER POWER CONTROL RELATED SIGNAL (NO DISC CONDITION) ......................................... 2-187. DISC TYPE JUDGEMENT WAVEFORMS ........................................................................................... 2-198. FOCUS ON WAVEFORMS................................................................................................................... 2-219. SPINDLE CONTROL WAVEFORMS (NO DISC CONDITION) ............................................................ 2-22

10. TRACKING CONTROL RELATED SIGNAL (SYSTEM CHECKING) ................................................... 2-2311. MT1389MH VIDEO OUTPUT WAVEFORMS ....................................................................................... 2-2412. DVD & AMP WAVEFORMS MT1389MH .............................................................................................. 2-25

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

BLOCK DIAGRAMS ...................................................................................................................................... 2-29

CIRCUIT DIAGRAMS .................................................................................................................................... 2-331. SMPS CIRCUIT DIAGRAM .................................................................................................................. 2-332. MAIN & AMP - 1 CIRCUIT DIAGRAM .................................................................................................. 2-353. MAIN & AMP - 2 CIRCUIT DIAGRAM .................................................................................................. 2-374. FRONT & POWER KEY CIRCUIT DIAGRAM ...................................................................................... 2-395. FRONT JACK CIRCUIT DIAGRAM ...................................................................................................... 2-41

CIRCUIT VOLTAGE CHART ........................................................................................................................ 2-43

PRINTED CIRCUIT BOARD DIAGRAMS .................................................................................................... 2-471. MAIN & AMP P.C. BOARD ................................................................................................................... 2-472. SMPS P.C. BOARD .............................................................................................................................. 2-513. FRONT P.C. BOARD ............................................................................................................................ 2-534. POWER KEY P.C. BOARD .................................................................................................................. 2-535. FRONT JACK P.C. BOARD .................................................................................................................. 2-53

2-2

ELECTRICAL TROUBLESHOOTING GUIDE

1. POWER SUPPLY CIRCUIT

YES

Check power supply circuit.

Check tracking servo circuit.

Check audio circuit.NO

NO

NOIs power on?

YES

Does it play?

YES

Does it outputaudio?

YES

YES

Turn power on.

INSERT POWER CORD.

OK

2-3

ELECTRICAL TROUBLESHOOTING GUIDE

1

2

2. FRONT CIRCUIT (1/2)

Reconnect it.NO

YES

YES

NO Check ifPN301 is ok?

Refer to SMPS part.NO

YES

Check if the frontpower is ok?

YES

Is the Digitron oncorrectly?

Check pattern and resolderingNO

NO

Check ifDIS301 is ok?

YES

Check if the remotecontrol is ok?

YES

Check if allbuttons are ok?

POWER ON.

Front B/D ok.

NO

2-4

ELECTRICAL TROUBLESHOOTING GUIDE

3. FRONT CIRCUIT (2/2)

1

Refer to power(SMPS).NO

Replace R346~R349, R352, R370.NO

Check if thepower part of the

front is ok?

YES

Check ifR346~R349, R352, R370

ok?

YES

Refer to MICOM circuit.

2

Refer to power(SMPS).NOCheck if the

power part of the front is ok?

YES

Refer to MICOM circuit.NOCheck if the remote

control waveform of PN301pin5 is ok?

YES

Check RM circuitNOCheck if RC301

voltage is ok(3.3 V)?

YES

Resolder or Replace RC301.

2-5

ELECTRICAL TROUBLESHOOTING GUIDE

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.

YES

YES

2-6

ELECTRICAL TROUBLESHOOTING GUIDE

5. TEST & DEBUG FLOW

Check the POWER PART.NO

Check the POWER PART.NO

YES

Check theAC voltage Power PCBA (110 V

or 220 V).

Check the regulators or diode.NO

1. Check 27 MHz 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? (12 V, 3.3 V,

5 V, 7 V, 34 V).

YES

Are 3.3 V and 5 V DC outputs normal on main

PCBA?

YES

YES

UpdateFLASH successfully?

YES

Switch on the Power PCBA.

TEST.

A

2-7

ELECTRICAL TROUBLESHOOTING GUIDE

NOCheck connection lines between FLASH & MT1389MH and the FLASH access timewhether is suitable or not.

NO

YES

YES

YES

YES

Check AV cableconnection to TV set.

YES

YES

YES

FlashMemory operates

properly?

Check connection lines between SDRAM(IC503) & MT1389MH and the SDRAMis damaged.

NOSDRAMworks properly?

Check the related circuit ofMT1389MH IC501 pins138, 142, 144, 145.

NOMT1389MHVIDEO outputs

properly?

Show LOGO?

NO Check the load OPEN & CLOSE switch.

NO

Check AV cable connection between main PCBA andloader. (MECHA)

YES

YES

YES

NormalOPEN_SW,CLOSE_SW

signal?

Check the Tray control IO pins on MT1389MH.

NONormalTROPEN & TRCLOSE

signal?

Check the Tray control MOTOR & SERVO circuit IC400.

NONormalLOAD+ & LOAD-

signal?

Does Traymove inside when it

is not at closedposition?

Power On.

A

B

2-8

ELECTRICAL TROUBLESHOOTING GUIDE

NO Check the connection line ofM_STBY.

NO

YES

YES

YES

Check the cable connectionwith MECHA.

Do not put in discand close tray.

YES

YES

YES

MotorDriver M_STBY

pin is high?

Check the related circuit of SLD.

NOMotor

Driver M_STBYpin is High?

Check the amp circuit on motor driver.

NOSLED+ andSLED- output

properly?

Doesthe SLED move to innerside when it is at outer

position?

NO Check Focus connection onMT1389MH and motor driver.

NO

Check cable connection withpick-up head.

YES

YES

ProperFocus outputs

to motor driver?

Check the amp circuit on motor driver.

NOProper F+ & F-outputs?

Optical Lenshas movements forsearching Focus?

B

C

2-9

ELECTRICAL TROUBLESHOOTING GUIDE

NO

NO

Check the laser power circuit on MT1389MH andconnecting to power transis-tor.(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 orCDLD output

property?

Check the related circuit on laser power transistor.

NO

NOCollector

voltage of power transistoris OK?(Q403, Q405)

Laserturns on whenreading disc?

Put disc in?

Check the cable connectionbetween spindle and main

PCB.

YES

YES

Check the spindle control amp circuit of motor driver.

SPNPSPNN output

properly?

NO Check the SPINDLE relatedcircuit on MT1389MH.

ProperSPINDLE signal on

MT1389MH.Does spindle rotate?

NO Check the related circuit onMT1389MH RF signal.

NO

NO

NOProperRF signal onMT1389MH.

Disc ID is correct?

C

D

2-10

ELECTRICAL TROUBLESHOOTING GUIDE

Check connections betweenMT1389MH and pick-up head.

Check the related circuit onMT1389MH CD_DVDCT.

Check the related circuit onMT1389MH.

Check the TRACK connectionon MT1389MH and motor driver.

Check the tracking control ampcircuit on motor driver.

NO NO

YES

YES

YES

Check CD_DVDCT connectionbetween AM5890 and

MT1389MH.

Check cable connectionon pick-up head.

YES

YES

Propersignals on A, B, C,D of MT1389MH.

NOProperCD_DVDCT signal on

MT1389MH.

Focus on ok?

NODisc Playback?

NO NO

NO

NO

YES

ProperCD_DVDCT signal on

MT1389MH.

YES

ProperTRACK signal

on MT1389MH.

YES

T+ & T- outputproperly?

Track On OK?

D

YES

E

Check RF signal waveform.

2-11

ELECTRICAL TROUBLESHOOTING GUIDE

NO Check connection betweenIC602 BCK, LRCK, ADATA0.

YES

YES

Check Digital Amp circuit(IC701, IC702).

YES

Check the related circuit ofPWM.(Check Audio outpins28, 31, 33, 34, 37, 39, 42).

NO

NO

YES

PWM ICreceived correct data

stream?

NormalPWM IC out?(IC602).

Normal Audiooutput when disc

playback?

E

TEST END.

2-12

ELECTRICAL TROUBLESHOOTING GUIDE

6. AMP PROTECTION

OK.NO

YES

"PROTECTION"appears continuously on the FLD.

Replace IC101.NO

YES

Is the IC101 pin54"LOW" signal(0 V)?

Replace the Q701 and Q702.NO

YES

Is the Q701 andQ702 normal?

YES

YES

After unplug power cord, connect again.

YES

Power on.

"PROTECTION" appears on the FLD.

Replace TI AMP IC(IC701, IC702)

2-13

ELECTRICAL TROUBLESHOOTING GUIDE

7. AUDIO μ-COM CIRCUIT(DVD & AMP)

Check DVD Module.

Check SMPS.

OK

YES

Power On.

DoesCD/DVD appear at

FLD?

YES

NODoesit appear DVD Error

at FLD?

Does Aux,Scart, opt and FM 87.5

appear at FLD.

DoesReading appear

at FLD?

YES

Doesno Disc or Time

appear at FLD?

YES

Checkif DVD and audio

CD insert isOK.

Check Power.

YES

YES

Replace IC101.

YESNO

NO

NO

NO

Refer to SMPS.

Refer to oscillator circuit.

Check IC101 reset waveform.

NO

YES

Check 3.3 V line.

Check power sectioncircuit.

NO

NO

NO

NO

NO

Checkpower part of Main

B/D.

Checkoscillator of

X101.

Checkif IC101 pin5

is high.

YES

YES

YES

Checkif IC101 pin9, 36, 59 are

high(5 V).

Checkif IC101 pin49

is high.

YES

2-14

DETAILS AND WAVEFORMS ON SYSTEM TEST AND DEBUGGING

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

2) MT1389MH reset is high active.

4

1) MT1389MH main clock is at 27 MHz(X500)

1

FIG 1-1

1

FIG 1-2

Power Cord in

2

3

4

2

3

P_CTL

RESET_IN

DVD_RST

2-15

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

65

2. SDRAM CLOCK

7

1) MT1389MH main clock is at 27 MHz(X500)

FIG 1-3

5

6

SF_DI

SF_DO

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

FIG 2-1

7

SDCLK

2-16

3. TRAY OPEN/CLOSE SIGNAL

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

3) Tray open waveform

8

9

11

10

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

2-17

4. SLED CONTROL RELATED SIGNAL (NO DISC CONDITION)

1312

1415

FIG 4-1

12

13

14

15

SLD

M-STBY

SL+

SL-

2-18

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

5. LENS CONTROL RELATED SIGNAL (NO DISC CONDITION)

17 18

16

FIG 6-1

19

20

21

2119 20

FIG 5-1

16

17

18

FOD

F+

F-

MDI1

DVDLD

CDLD

2-19

7. DISC TYPE JUDGEMENT WAVEFORMS

FIG 7-1 (DVD)

22

23

24

F+

PU_DET

RF

FIG 7-2 (DVD)

22

23

24

F+

PU_DET

RF

22

24

23

23 : This signal can see using special debug program

2-20

FIG 7-3 (CD)

22

23

24

F+

PU_DET

RF

FIG 7-4 (CD)

22

23

24

F+

PU_DET

RF

23 : This signal can see using special debug program

22

24

23

2-21

8. FOCUS ON WAVEFORMS

26

27 28

25 : This signal can see using special debug program

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-

25

2-22

30

29

31

9. SPINDLE CONTROL WAVEFORMS (NO DISC CONDITION)

FIG 9-1

29

30

31

SPIND

SP-

SP+

2-23

10. TRACKING CONTROL RELATED SIGNAL (SYSTEM CHECKING)

32 : This signal can see using special debug program

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+

32

35

34

33

2-24

2) Y

11. MT1389MH VIDEO OUTPUT WAVEFORMS

1) Full colorbar signal(COMPOSITE)

FIG 11-1

36

FIG 11-2

37

36

37

CVBS

Y_G

2-25

1)

• FL+ : R640

2)

• RL+ : R641

3)

• WF- : R642or WF+ : R643

4)

• C+ : R644

5)

• FR+ : R645

6)

• RR+ : R646

12. DVD & AMP WAVEFORMS MT1389MH

38

40

42

39

41

43

43

42

41

40

39

38

2-26

MEMO

SMPS PCB

COMPONENTCVBSAUX

SCART SPK TERMINAL

23PI

N 9PIN 18PIN

16 PIN12 PIN

HDMI

MD

Tuner

CN851JK202 JK201 TU100 JK701

MAIN+AMP PCB

CN202

CN401

CN103

CN402

FRONT PCB

VFDVOLUME

PN301

FRONT JACK PCBMIC 1,2USBPORTABLE INPN202

PN901

CN901B’d to B’d

PWR KEY PCB CN301

PN302

WIRING DIAGRAM

2-27 2-28

MPEGMT1389MH

(176PIN)

SDRAMSPIFLASH EEPROM

MICOM

SCI, SD

A

DM

A[0..11],DB

[0..15]

DSC

K#,C

KE,C

S0#,RAS0#

SPI_CS,C

LK,D

I,KO

CE,CLK,DI,DO, MRST#

USBP, USBN

MICI/F

Aux-INADCCS5345

USB CON

Portable

S4308

Scart

MM16926dB up

Component

CompositeY/G,Pb/B,Pr/R

R,G,B

Y, Pb, Pr

CVBS

Analog MIC

CVBS

2CH A

2CH A

P/UPA,B,C,D,E,F,RF

CDLD, DVDLD

OPEN/CLOSE

MDICDDVDCT,VRCD,VRDVD

FOCUS/SLED

SPINDLE/TRACKINGM_STBY

MMOTORDRIVE

IC(AM5890)

MCLK, LRCK, BCK

AD_DATA

I/O Board

Front

CVBS

Karaoke model: 4MNon karaoke: 2M

CLK,DI,DO

TunerRDS_DATRDS_CLK

TUNER_DATTUNER_CLKST_IND

2CH A

2CH A

TX0, TX1, TX2, TXCEEPROM

BLOCK DIAGRAMS1. BLOCK DIAGRAM-1

2-29 2-30

DVD_CLK

MICOM

Tuner

MPEG

EEPROM

VFDDRIVER

VOL &KEYRMC

TAS5352

DVD_RST

DVD_CE

DVD_DO

DVD_DI

EEP_DAT

EEP_CLK

VFD_DO

VFD_CLKVFD_STB

RDS_DAT

RDS_CLK

TUNER_DAT

TUNER_CLK

ST_IND

TUNED

RCU_IN

VOL_DN

VOL_UP

KEY

PS9850B

CS5346

PWM_RSTPWMT_CLKPWM_DAT

RESET

DBGP0

DBGP1

DBGP2

D/L CNT

AMP_PDN

AMP_SD

AMP_PROTECT

MIC_DET

P_SENSE

ADC_RST

ADC_CLKADC_DAT

MIC

OP-AMP

2. BLOCK DIAGRAM-2

2-31 2-32

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

SMPSEBY61269201, REV1.1

2010. 11. 25

CAUTION: Danger if fuse is incorrectly replaced.

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

WarningParts that are shaded are critical withrespect to risk of fire or electrical shock.

CIRCUIT DIAGRAMS 1. SMPS CIRCUIT DIAGRAM

IMPORTANT SAFETY NOTICE

WHEN SERVICING THIS CHASSIS, UNDER NO CIRCUMSTANCES SHOULD THE ORIGINAL DESIGN BEMODIFIED OR ALTERED WITHOUT PERMISSIONFROM THE LG CORPORATION. ALL COMPONENTSSHOULD BE REPLACED ONLY WITH TYPES IDENTICAL TO THOSE IN THE ORIGINAL CIRCUIT. SPECIAL

COMPONENTS ARE SHADED ON THE SCHEMATICFOR EASY IDENTIFICATION.THIS CIRCUIT DIAGRAM MAY OCCASIONALLY DIFFER FROM 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.

2-33 2-34

30

35172227

1828

13

29

34

33

31

12

16 26

11

1415

10

4232532

2119 20

7

36

37

8

9

1

24

65

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

: WAVEFORM NUMBER

2. MAIN & AMP - 1 CIRCUIT DIAGRAM

2-35 2-36

S T

MAIN & AMPEBY61070501_(#1), REV2.14

2011. 03. 11

43

42

41

40

39

38

2

3

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

: WAVEFORM NUMBER

3. MAIN & AMP - 2 CIRCUIT DIAGRAM

2-37 2-38

S T

MAIN & AMPEBY61070501_(#2), REV2.14

2011. 03. 11

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

FRONTEBY61070601, REV2.1

2010. 11. 25

POWER KEYEBY61051201, REV2.4

2010. 11. 25

4. FRONT & POWER KEY CIRCUIT DIAGRAM

2-39 2-40

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

5. FRONT JACK CIRCUIT DIAGRAM

2-41 2-42

S T

FRONT JACKEBY60687501, REV2.4

2011. 03. 11

Pin No. Specification EE Mode (V) Playback Mode (V)

IC101 MICOM (LC87F5M64A)

9(VDD2) 2.8~5.5 3.479 3.475

36(VDD3) 2.8~5.5 3.479 3.476

59(VDD1) 2.8~5.5 3.479 3.476

IC103 EEPROM (M24C16)

8(VCC) 1.8~5.5 3.48 3.475

IC104 DETECT

1(VCC) - 3.643 3.636

IC105 DETECT

1(VCC) - 3.476 3.469

IC201 ADC (CS5346)

5(VLC) 3.13~5.25 3.244 3.227

14(VA) 4.75~5.25 4.979 4.962

30(VA) 4.75~5.25 - -

36(VLS) 3.13~5.25 3.244 3.227

46(VD) 3.13~3.47 3.244 3.227

IC301 VFD (ET16315)

13(VDD) 4.5~5.5 3.491 3.485

43(VDD) 4.5~5.5 3.491 3.486

30(VEE) VDD-35 -20.75 -20.82

IC400 MOTOR IC (AM5890S

8(VCC1) 4.3~13.2 4.993 4.95

19(VCC2) 4.3~Vcc1 4.993 4.952

20(VCCD) 0~12 3.1 -

IC501 (MT1389FE/MH With HDMI)

1 (AVDD12_2) - 1.856 1.852

2 (AVDD33_1) - 3.165 3.147

12 (AVDD33_2) - 3.164 3.147

22 (VDD33_USB) - 3.165 3.147

25(VDD12_USB) - 1.855 1.844

38 (DVDD33) - 3.22 3.202

57 (DVDD33) - 3.22 3.202

67 (DVDD33) - 3.219 3.202

79 (DVDD12) - 1.843 1.824

92 (DVDD33) - 3.219 3.202

101 (DVDD33) - 3.22 3.202

109 (DVDD12) - 1.843 1.82

114 (AVDD33_12) - 3.075 3.06

119 (AVDD12_C) - 1.879 1.874

125 (AVDD12_D) - 1.879 1.874

140 (DACVDDB) - 0 0

142 (DACVDDA) - 0.312 0.572

151 (AADVDD) - 3.164 3.149

163(ADACVDD1) - 3.165 3.148

164(ADACVDD2) - 3.165 3.148

Pin No. Specification EE Mode (V) Playback Mode (V)

165 (AVDD12) - 1.856 1.849

IC502 Flash (W25Q168)

8(VDD) 2.7~3.6 3.221 3.199

IC503 SDRAM (HY57V64)

1(VDD) 3.0~3.6 3.223 3.209

3(VDDQ) 3.0~3.6 3.223 3.209

9(VDDQ) 3.0~3.6 3.223 3.208

14(VDD) 3.0~3.6 3.223 3.209

27(VDD) 3.0~3.6 3.223 3.209

43(VDDQ) 3.0~3.6 3.223 3.209

49(VDDQ) 3.0~3.6 3.223 3.209

IC602 PWM (PS9850)

16(VDD_IO) 2.97~3.63 3.264 3.255

21(VDD_CORE) 1.08~1.32 1.253 1.255

24(VDD_IO) 2.97~3.63 3.264 3.256

29(VDD_IO) 2.97~3.63 3.264 3.256

32(VDD_IO) 2.97~3.63 3.264 3.256

35(VDD_IO) 2.97~3.63 3.264 3.256

40(VDD_IO) 2.97~3.63 3.264 3.256

43(VDD_CORE) 1.08~1.32 1.253 1.252

48(VDD_IO) 2.97~3.63 3.264 3.256

57(VDD_CORE) 1.08~1.32 1.252 1.252

59(VDDA) 1.08~1.32 1.255 1.254

61(VDD_VIN2) 2.20~3.30 3.264 3.255

64(VDD_VIN1) 2.20~3.30 3.264 3.255

IC701 AMP (TAS5352)

1(GVDD_B) 10.8~13.2 12.22 12.1

21(VDD) 10.8~13.2 12.26 12.15

22(GVDD_C) 10.8~13.2 12.21 12.11

23(GVDD_D) 10.8~13.2 12.21 12.11

26(PVDD_D) 0~52.5 34.8 34.8

27(PVDD_D) 0~52.5 34.8 34.8

32(PVDD_C) 0~52.5 34.8 34.8

35(PVDD_B) 0~52.5 34.8 34.8

40(PVDD_A) 0~52.5 34.8 34.8

41(PVDD_A) 0~52.5 34.8 34.8

44(GVDD_A) 10.8~13.2 12.22 12.11

CIRCUIT VOLTAGE CHART1. IC'S VOLTAGE

2-43 2-44

Loca. NoValue

Capacitor(uF)

VoltaeSpec

EE Mode Playback Mode

(+) (-) Gap Margin (+) (-) Gap Margin

C106 220 10V 3.45V 0V 3.45V 6.55V 3.45V 0V 3.45V 6.55V

C114 100 10V 3.45V 0V 3.45V 6.55V 3.45V 0V 3.45V 6.55V

C122 220 10V 3.69V 0V 3.69V 6.31V 3.7V 0V 3.7V 6.3V

C124 47 16V 4.98V 0V 4.98V 11.02V 4.98V 0V 4.98V 11.02V

C127 47 16V 12.18V 0V 12.18V 3.82V 12.24V 0V 12.24V 3.76V

C133 47 16V 3.45V 0V 3.45V 12.55V 3.45V 0V 3.45V 12.55V

C145 10 16V 3.08V 0V 3.08V 12.92V 3.08V 0V 3.08V 12.92V

C146 100 16V 3.28V 0V 3.28V 12.72V 3.29V 0V 3.29V 12.71V

C228 1 50V 1.4V 0V 1.4V 48.6V - - 0V 50V

C229 100 16V 11.47V 0V 11.47V 4.53V 11.53V 0V 11.53V 4.47V

C230 22 50V 1.97V 0V 1.97V 48.03V 1.97 0 1.97V 48.03V

C231 100 16V 2V 1.88V 0.12V 15.88V 1.99V 1.87V 0.12V 15.88V

C241 22 50V 2.46V 0V 2.46V 47.54V 2.47V 0V 2.47V 47.53V

C243 47 16V 4.95V 0V 4.95V 11.05V 4.95V 0V 4.95V 11.05V

C264 10 16V 4.97V 0V 4.97V 11.03V 4.97V 0V 4.97V 11.03V

C265 10 16V 3.23V 0V 3.23V 12.77V 3.23V 0V 3.23V 12.77V

C267 47 16V 4.2V 0V 4.2V 11.8V 4.95V 0V 4.95V 11.05V

C268 10 16V 2.48V 0V 2.48V 13.52V 2.48V 0V 2.48V 13.52V

C274 470 10V 1.61V 0.8V 0.81V 9.19V 2.03V 1.15V 0.88V 9.12V

C275 470 10V 2.3V 1.37V 0.93V 9.07V 2.31V 1.33V 0.98V 9.02V

C276 470 10V 2.31V 1.4V 0.91V 9.09V 2.32V 1.36V 0.96V 9.04V

C282 470 10V 1.6V 0.91V 0.69V 9.31V 2.02V 1.27V 0.75V 9.25V

C2D1 220 6.3V 1.02V 0V 1.02V 5.28V 4.98V 0V 4.98V 1.32V

C2D3 4.7 50V 0.32V 0.18V 0.14V 49.86V 0.58V 0.31V 0.27V 49.73V

C2D4 4.7 50V 0.42V 0.25V 0.17V 49.83V 0.49V 0.25V 0.24V 49.76V

C309 220 6.3V 3.36V 0V 3.36V 2.94V 3.37V 0V 3.37V 2.93V

C332 47 35V 0V -15.55V 15.55V 19.45V 0V -15.43V 15.43V 19.57V

C333 47 35V 0V -17.91V 17.91V 17.09V 0V -17.81V 17.81V 17.19V

C3A1 47 16V 3.47V 0V 3.47V 12.53V 3.47V 0V 3.47V 12.53V

C3A2 47 35V 0V -20.52V 20.52V 14.48V 0V -20.4V 20.4V 14.6V

C417 47 16V 3.21V 3.14V 0.07V 15.93V 3.2V 2.29V 0.91V 15.09V

C418 47 16V 3.21V 3.14V 0.07V 15.93V 3.2V 3.02V 0.18V 15.82V

C420 47 16V 4.98V 0V 4.98V 11.02V 4.94V 0V 4.94V 11.06V

C421 47 16V 4.98V 0V 4.98V 11.02V 4.94V 0V 4.94V 11.06V

C422 47 16V 1.86V 0V 1.86V 14.14V 1.88V 0V 1.88V 14.12V

C423 100 10V 4.96V 0V 4.96V 5.04V 4.96V 0V 4.96V 5.04V

C427 47 16V 1.4V 0V 1.4V 14.6V 1.42V 0V 1.42V 14.58V

C553 10 16V 1.28V 1.02V 0.26V 15.74V 1.24 1.02 0.22V 15.78V

C554 10 16V 1.25V 1.06V 0.19V 15.81V 1.26 1.05 0.21V 15.79V

C555 100 10V 3.21V 0V 3.21V 6.79V 3.2V 0V 3.2V 6.8V

C556 100 10V 1.85V 0V 1.85V 8.15V 1.86V 0V 1.86V 8.14V

C557 100 16V 1.82V 0V 1.82V 14.18V 1.84V 0V 1.84V 14.16V

C558 100 10V 3.16V 0V 3.16V 6.84V 3.15V 0V 3.15V 6.85V

Loca. NoValue

Capacitor (uF)

VoltaeSpec

EE Mode Playback Mode

(+) (-) Gap Margin (+) (-) Gap Margin

C560 100 16V 1.53V 0V 1.53V 14.47V 1.48V 0V 1.48V 14.52V

C561 100 10V 1.34V 0V 1.34V 8.66V 1.33V 0V 1.33V 8.67V

C563 10 16V 3.22V 0V 3.22V 12.78V 1.28V 1.03V 0.25V 15.75V

C564 10 16V 3.22V 0V 3.22V 12.78V 3.21V 0V 3.21V 12.79V

C565 10 16V 3.21V 0V 3.21V 12.79V 3.2V 0V 3.2V 12.8V

C613 10 16V 1.24V 0V 1.24V 14.76V 1.25V 0V 1.25V 14.75V

C646 10 16V 0.16V 0V 0.16V 15.84V 0.14V 0V 0.14V 15.86V

C702 47 50V 12.17V 0V 12.17V 37.83V 12.22V 0V 12.22V 37.78V

C708 10 16V 12.11V 0V 12.11V 3.89V 12.17V 0V 12.17V 3.83V

C723 470 50V 37.2V 0V 37.2V 12.8V 37.35V 0V 37.35V 12.65V

C729 470 35V 37.2V 18.4V 18.8V 16.2V 37.35V 18.58V 18.77V 16.23V

C730 470 35V 18.4V 0V 18.4V 16.6V 18.58V 0V 18.58V 16.42V

C731 470 35V 18.4V 0V 18.4V 16.6V 18.58V 0V 18.58V 16.42V

C732 470 35V 37.2V 18.4V 18.8V 16.2V 37.35V 18.58V 18.77V 16.23V

C746 470 50V 37.2V 0V 37.2V 12.8V 37.35V 0V 37.35V 12.65V

C749 47 50V 12.17V 0V 12.17V 37.83V 12.22V 0V 12.22V 37.78V

C753 10 16V 12.11V 0V 12.11V 3.89V 12.17V 0V 12.17V 3.83V

C768 470 35V 37.2V 18.4V 18.8V 16.2V 37.35V 18.58V 18.77V 16.23V

C770 470 35V 18.5V 0V 18.5V 16.5V 18.58V 0V 18.58V 16.42V

C782 470 35V 37.2V 18.4V 18.8V 16.2V 37.35V 18.58V 18.77V 16.23V

C783 470 35V 18.4V 0V 18.4V 16.6V 18.58V 0V 18.58V 16.42V

C784 470 35V 19.8V 0V 19.8V 15.2V 18.58V 0V 18.58V 16.42V

C785 470 35V 37.2V 18.5V 18.7V 16.3V 37.36V 18.58V 18.78V 16.22V

C7A7 470 50V 37.2V 0V 37.2V 12.8V 37.35V 0V 37.35V 12.65V

C7A8 470 50V 37.2V 0V 37.2V 12.8V 37.35V 0V 37.35V 12.65V

2. CAPACITOR'S VOLTAGE

2-45 2-46

PRINTED CIRCUIT BOARD DIAGRAMS1. MAIN & AMP P.C. BOARD

84-274-2

(TOP VIEW)

05-294-2

MAIN & AMP P.C. BOARD

(BOTTOM VIEW)

NOTE) Warning Parts that are critical with respect to risk of fire or electrical shock.

2. SMPS P.C. BOARD

(TOP VIEW) (BOTTOM VIEW)

25-215-2

4. POWER KEY P.C. BOARD (TOP VIEW)

5. FRONT JACK P.C. BOARD (TOP VIEW) (BOTTOM VIEW)

(BOTTOM VIEW)

3. FRONT P.C. BOARD (TOP VIEW)

(BOTTOM VIEW)

45-235-2

3-1

SECTION 3

CABINET & MAIN CHASSIS

CONTENTS

EXPLODED VIEWS ......................................................................................................................................... 3-31. CABINET AND MAIN FRAME SECTION ................................................................................................. 3-32. DECK MECHANISM SECTION (DP-15T) ................................................................................................ 3-53. SPEAKER SECTION ................................................................................................................................ 3-7 3-1. CENTER SPEAKER (SH36PD-C)....................................................................................................... 3-7 3-2. FRONT SPEAKER (SH36PD-F).......................................................................................................... 3-8

3-4. PASSIVE SUBWOOFER (SH36PD-W)...........................................................................................4. PACKING ACCESSORY SECTION ....................................................................................................... 3-11

3-3. REAR SPEAKER (SH36PD-S)............................................................................................................ 3-9..... 3-10

3-2

MEMO

A

B

D

DE

BAC

A50 463

A43

463

A47

463463

A46

465

470

300E

262

261

260 261

A44

462

250

FRONT JACK

SMPS

MAIN

A41

PN202

472

CABLE1

C

PN302

463

273

263

279

283

284

284

282

275

EXPLODED VIEWS1. CABINET AND MAIN FRAME SECTION

NOTES) THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIANGLE IS INTENDED TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF IMPORTANT SAFETY INFORMATION IN SERVICELITERATURE.

3-3 3-4

012

010

012

037

012A

019442

442

A02 A01

A03

001

002

003439

018

013

017

014020

016

440

015

015B

015A

435

026

3-5 3-6

MEMO2. DECK MECHANISM SECTION (DP-15T)

A700

3-7

3. SPEAKER SECTION 3-1. CENTER SPEAKER (SH36PD-C)

3-8

3-2. FRONT SPEAKER (SH36PD-F)

A800

3-9

3-3. REAR SPEAKER (SH36PD-S)

855R Rear SPK Wire (7M)

A600

850A850B

852854

853

851

3-10

3-4. PASSIVE SUBWOOFER (SH36PD-W)

A900

950

951

952

3-11

4. PACKING ACCESSORY SECTION

804 Bag

803 Packing

803A Speaker packing

803C Speaker packing

803B Packing

803D Speaker packing

802 Box

803E Speaker packing

824 AM Antenna

801 Owner’s Manual

825 FM Antenna

900 Remote Control

808 Battery

811 Video Cable

Speaker cables

WIRE80 Front Left/Right 3 M

3-12

MEMO

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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

1-1-1. Plate Clamp. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-31-1-2. Magnet Clamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-31-1-3. 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-15T) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6

SECTION 4. MECHANISM (DP-15T)

4-2

DECK MECHANISM PARTS LOCATIONS

NoteWhen reassembling, perform the procedure inreverse order.The “Bottom” on Disassembly column of aboveTable indicates the part should be disassembled at the Bottom side.

• Top View(without Tray Disc)

• Bottom View

• Top ViewStarting 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

Disassembly

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 of

arrow(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 Tray Disc 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

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 DAMPERDistinguish upper and lower sides(Assemble with care)

Distinguish upper and lower sides(Assemble with care)

RUBBER DAMPER

GEAR RACK

GENERAL PICK UP ASSEMBLY

SPINDLE MOTOR ASSEMBLY

Fig. 4-3

(S2)(S2)

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 to separate it from the Base Main.

Note • When reassembling move the Guide Up/Down

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

• When reassembling insert (A) portion of the Frame Assembly Up/Down in the (B) portion of the Guide Up/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 the

Guide 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 PWB

Assembly 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 ASSEMBLY

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 INSERTION TORGUE CONTROL

(800gf DOWN)

4-6

012

010

012

037

012A

019442

442

A02 A01

A03

001

002

003439

018

013

017

014020

016

440

015

015B

015A

435

026

DECK MECHANISM EXPLODED VIEW (DP-15T)