LG DVX-286, DV-286, DV-286-K Service manual

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Page 1

DVD-VIDEO PLAYER

SERVICE MANUAL

MODELS : DVX286/DV286/DV286K

CAUTION

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

MODELS : DVX286/DV286/DV286K

SERVICE MANUAL

P/N : AFN31629357 JANUARY, 2007

http://biz.lgservice.com

Page 2

CONTENTS

SECTION 1.........SUMMARY

SECTION 2.........CABINET & MAIN CHASSIS

SECTION 3.........ELECTRICAL

SECTION 4.........MECHANISM (DP-11)

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

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1-2

SECTION 1

SUMMARY

CONTENTS

PRODUCT SAFETY SERVICING GUIDELINES FOR DVD PRODUCTS

..................1-3

SERVICING PRECAUTIONS ....................................................................................1-4

• GENERAL SERVICING PRECAUTIONS

• INSULATION CHECKING PRODEDURE

• ELECTROSTATICALLY SENSITIVE (ES) DEVICES

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

SPECIFICATIONS .....................................................................................................1-6

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1-3

PRODUCT SAFETY SERVICING GUIDELINES FOR DVD PRODUCTS

CAUTION : DO NOT ATTEMPT TO MODIFY THIS PRODUCT IN ANY WAY, NEVER PERFORM CUSTOMIZED INSTALLATIONS WITHOUT MANUFACTURER’S APPROVAL. UNAUTHORIZED MODIFICATIONS WILL NOT ONLY VOID THE WARRANTY, BUT MAY LEAD TO YOUR BEING LIABLE FOR ANY RESULTING PROPERTY DAMAGE OR USER INJURY.

SERVICE WORK SHOULD BE PERFORMED ONLYAFTER YOU ARE THOROUGHLY FAMILIAR WITH ALL OF THE FOLLOWING SAFETY CHECKS AND SERVICING GUIDELINES. TO DO OTHERWISE, INCREASES THE RISK OF POTENTIAL HAZARDS AND INJURY TO THE USER.

WHILE SERVICING, USE AN ISOLATION TRANSFORMER FOR PROTECTION FROM A.C. LINE SHOCK.

SAFETY CHECKS

AFTER THE ORIGINAL SERVICE PROBLEM HAS BEEN CORRCTED. A CHECK SHOULD BE MADE OF THE FOLLOWING.

SUBJECT : FIRE & SHOCK HAZARD

1.BE SURE THAT ALL COMPONENTS ARE POSITIONED IN SUCH AWAY AS TO AVOID POSSIBILITY OF ADJACENT COMPONENT SHORTS. THIS IS ESPECIALLY IMPORTANT ON THOSE MODULES WHICH ARE TRANSPORTED TO AND FROM THE REPAIR SHOP.

2.NEVER RELEASE A REPAIR UNLESS ALL PROTECTIVE DEVICES SUCH AS INSULATORS, BARRIERS, COVERS, SHIELDS, STRAIN RELIEFS, POWER SUPPLY CORDS, AND OTHER HARDWARE HAVE BEEN REINSTALLED PER ORIGINAL DESIGN. BE SURE THAT THE SAFETY PURPOSE OF THE POLARIZED LINE PLUG HAS NOT BEEN DEFEATED.

3.SOLDERING MUST BE INSPECTED TO DISCOVER POSSIBLE COLD SOLDER JOINTS, SOLDER SPLASHES OR SHARP SOLDER POINTS. BE CERTAIN TO REMOVE ALL LOOSE FOREIGN PARTICLES.

4.CHECK FOR PHYSICAL EVIDENCE OF DAMAGE OR DETERIORATION TO PARTS AND COMPONENTS. FOR FRAYED LEADS, DAMAGED INSULATION (INCLUDING A.C. CORD). AND REPLACE IF NECESSARY FOLLOW ORIGINAL LAYOUT, LEAD LENGTH AND DRESS.

5.NO LEAD OR COMPONENT SHOULD TOUCH ARECIVING TUBE OR ARESISTOR RATED AT 1 WATT OR MORE. LEAD TENSION AROUND PROTRUNING METAL SURFACES MUST BE AVOIDED.

6.ALL CRITICAL COMPONENTS SUCH AS FUSES, FLAMEPROOF RESISTORS, CAPACITORS, ETC. MUST BE REPLACED WITH EXACT FACTORY TYPES, DO NOT USE REPLACEMENT COMPONENTS OTHER THAN THOSE SPECIFIED OR MAKE UNRECOMMENDED CIRCUIT MODIFICATIONS.

7.AFTER RE-ASSEMBLY OF THE SETALWAYS PERFORM AN A.C. LEAKAGE TEST ON ALL EXPOSED METALLIC PARTS OF THE CABINET, (THE CHANNEL SELECTOR KNOB, ANTENNATERMINALS. HANDLE AND SCREWS) TO BE SURE THE SET IS SAFE TO OPERATE WITHOUT DANGER OF ELECTRICAL SHOCK. DO NOT USE A LINE ISOLATION TRANSFORMER DURING THIS TEST USE AN A.C. VOLTMETER, HAVING 5000 OHMS PER VOLT OR MORE SENSITIVITY, IN THE FOLLOWING MANNER; CONNECT A 1500 OHM 10 WATT RESISTOR, PARALLELED BY A .15 MFD. 150.V A.C TYPE CAPACITOR BETWEEN A KNOWN GOOD EARTH GROUND (WATER PIPE, CONDUIT, ETC.) AND THE EXPOSED METALLIC PARTS, ONE AT A TIME. MEASURE THE A.C. VOLTAGE ACROSS THE COMBINATION OF 1500 OHM RESISTOR AND .15 MFD CAPACITOR. REVERSE THE A.C. PLUG AND REPEAT A.C. VOLTAGE MEASUREMENTS FOR EACH EXPOSED METALLIC PART. VOLTAGE MEASURED MUST NOT EXCEED 75 VOLTS R.M.S. THIS CORRESPONDS TO 0.5 MILLIAMP A.C ANY VALUE EXCEEDING THIS LIMIT CONSTITUTES A POTENTIAL SHOCK HAZARD AND MUST BE CORRECTED IMMEDIATELY.

SUBJECT : 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 THE SERVICE PERSONNEL TO THE PRESENCE OF IMPORTANT SAFETY INFORMATION IN SERVICE LITERATURE.

SUBJECT : X-RADIATION

1.BE SURE PROCEDURES AND INSTRUCTIONS TO ALL SERVICE PERSONNEL COVER THE SUBJECT OF X-RADIATION. THE ONLY POTENTIAL SOURCE OF XRAYS IN CURRENT T.V. RECEIVERS IS THE PICTURE TUBE. HOWEVER, THIS TUBE DOES NOT EMIT X-RAYS WHEN THE HIGH VOLTAGE IS AT THE FACTORY SPECIFIED LEVEL. THE PROPER VALUE IS GIVEN IN THE APPLICABLE SCHEMATIC. OPERATION AT HIGHER VOLTAGES MAY CAUSE A FAILURE OF THE PICTURE TUBE OR HIGH VOLTAGE SUPPLY AND, UNDER CERTAIN CIRCUMSTANCES, MAY PRODUCE RADIATION IN EXCESS OF DESIRABLE LEVELS.

2.ONLY FACTORY SPECIFIED C.R.T. ANODE CONNECTORS MUST BE USED. DEGAUSSING SHIELDS ALSO SERVE AS X-RAY SHIELD IN COLOR SETS, ALWAYS RE-INSTALL THEM.

3.IT IS ESSNTIAL THAT SERVICE PERSONNEL HAVE AVAILABLE AN ACCURATE AND RELIABLE HIGH VOLTAGE METER. THE CALIBRATION OF THE METER SHOULD BE CHECKED PERIODICALLY AGAINST A REFERENCE STANDARD, SUCH AS THE ONE AVAILABLE AT YOUR DISTRIBUTOR.

4.WHEN THE HIGH VOLTAGE CIRCUITRY IS OPERATING PROPERLY THERE IS NO POSSIBILITY OF AN X-RADIATION PROBLEM. EVERY TIME A COLOR CHASSIS IS SERVICED. THE BRIGHTNESS SHOULD BE RUN UP AND DOWN WHILE MONITORING THE HIGH VOLTAGE WITH A METER TO BE CERTAIN THAT THE HIGH VOLTAGE DOES NOT EXCEED THE SPECIFIED VALUE AND THAT IT IS REGULATING CORRECTLY, WE SUGGEST THAT YOU AND YOUR SERVICE ORGANIZATION REVIEW TEST PROCEDURES SO THAT VOLTAGE REGULATION IS ALWAYS CHECKED AS A STANDARD SERVICING PROCEDURE. AND THAT THE HIGH VOLTAGE READING BE RECORDER ON EACH CUSTOMER’S INVOICE.

5.WHEN TROUBLESHOOTING AND MAKING TEST MEASUREMENTS IN A PRODUCT WITH A PROBLEM OF EXCESSIVE HIGH VOLTAGE, AVOID BEING UNNECESSARILY CLOSE TO THE PICTURE TUBE AND THE HIGH VOLTAGE SUPPLY. DO NOT OPERATE THE PRODUCT LONGER THAN IS NECESSARY TO LOCATE THE CAUSE OF EXCES SIVE VOLTAGE.

6.REFER TO HV. B+ AND SHUTDOWN ADJUSTMENT PROCEDURES DESCRIBED IN THE APPROPRIATE SCHEMATIC AND DIAGRAMS (WHERE USED).

SUBJECT : IMPLOSION

1.ALL DIRECT VIEWED PICTURE TUBES ARE EQUIPPED WITH AN INTE GRAL IMPLOSION PROTECTION SYSTEM, BUT CARE SHOULD BE TAKEN TO AVOID DAMAGE DURING INSTALLATION, AVOID SCRATCHING THE TUBE. IF SCRATCHED REPLACE IT.

2.USE ONLY RECOMMENDED FACTORY REPLACEMENT TUBES.

SUBJECT : TIPS ON PROPER INSTALLATION

1.NEVER INSTALL ANY PRODUCT IN A CLOSED-IN RECESS, CUBBYHOLE OR CLOSELY FITTING SHELF SPACE. OVER OR CLOSE TO HEAT DUCT, OR IN THE PATH OF HEATED AIR FLOW.

2.AVOID CONDITIONS OF HIGH HUMIDITY SUCH AS: OUTDOOR PATIO INSTALLATIONS WHERE DEW IS A FACTOR, NEAR STEAM RADIATORS WHERE STEAM LEAKAGE IS A FACTOR, ETC.

3.AVOID PALCEMENT WHERE DRAPERIES MAY OBSTRUCT REAR VENTING. THE CUSTOMER SHOULD ALSO AVOID THE USE OF DECORATIVE SCARVES OR OTHER COVERINGS WHICH MIGHT OBSTRUCT VENTILATION.

4.WALL AND SHELF MOUNTED INSTALLATIONS USING A COMMERCIAL MOUNTING KIT. MUST FOLLOW THE FACTORY APPROVED MOUNTING INSTRUCTIONS A PRODUCT MOUNTED TO A SHELF OR PLATFORM MUST RETAIN ITS ORIGINAL FEET (OR THE EQUIVALENTTHICKNESS IN SPACERS) TO PROVIDE ADEQUATE AIR FLOW ACROSS THE BOTTOM, BOLTS OR SCREWS USED FOR FASTENERS MUST NOT TOUCH ANY PARTS OR WIRING. PERFORM LEAKAGE TEST ON CUSTOMIZED INSTALLATIONS.

5.CAUTION CUSTOMERS AGAINST THE MOUNTING OF A PRODUCT ON SLOPING SHELF OR A TILTED POSITION, UNLESS THE PRODUCT IS PROPERLY SECURED.

6.A PRODUCT ON A ROLL-ABOUT CART SHOULD BE STABLE ON ITS MOUNTING TO THE CART. CAUTION THE CUSTOMER ON THE HAZARDS OF TRYING TO ROLL A CART WITH SMALL CASTERS ACROSS THRESHOLDS OR DEEP PILE CARPETS.

7.CAUTION CUSTOMERS AGAINST THE USE OF A CART OR STAND WHICH HAS NOT BEEN LISTED BY UNDERWRITERS LABORATORIES, INC. FOR USE WITH THEIR SPECIFIC MODEL OF TELEVISION RECEIVER OR GENERICALLY APPROVED FOR USE WITH T.V.’S OF THE SAME OR LARGER SCREEN SIZE.

8.CAUTION CUSTOMERS AGAINST THE USE OF EXTENSION CORDS, EXPLAIN THAT A FOREST OF EXTENSIONS SPROUTING FROM A SINGLE OUTLET CAN LEAD TO DISASTROUS CONSEQUENCES TO HOME AND FAMILY.

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SERVICING PRECAUTIONS

CAUTION : Before servicing the DVD covered by this service data and its supplements and addends, read and follow the

SAFETY PRECAUTIONS. NOTE : if unforeseen

circumstances create conflict between the following servicing precautions and any of the safety precautions in this publications, always follow the safety precautions. Remembers Safety First:

General Servicing Precautions

1.Always unplug the DVD AC power cord from the AC power source before:

(1) Removing or reinstalling any component, circuit board,

module, or any other assembly.

(2) Disconnection or reconnecting any internal electrical

plug or other electrical connection.

(3) Connecting a test substitute in parallel with an

electrolytic capacitor.

Caution : A wrong part substitution or incorrect polarity

installation of electrolytic capacitors may result in an explosion hazard.

2.Do not spray chemicals on or near this DVD or any of its assemblies.

3.Unless specified otherwise in this service data, clean electrical contacts by applying an appropriate contact cleaning solution to the contacts with a pipe cleaner, cotton-tipped swab, or comparable soft applicator. Unless specified otherwise in this service data, lubrication of contacts is not required.

4.Do not defeat any plug/socket B+ voltage interlocks with whitch instruments covered by this service manual might be equipped.

5.Do not apply AC power to this DVD and/or any of its electrical assemblies unless all solid-state device heat sinks are cerrectly installed.

6.Always connect test instrument ground lead to the appropriate ground before connection the test instrument positive lead. Always remove the test instrument ground lead last.

Insulation Checking Procedure

Disconnect the attachment plug from the AC outlet and turn the power on. Connect an insulation resistance meter(500V) to the blades of the attachment plug. The insulation resistance between each blade of the attachment plug and accessible conductive parts (Note 1) should be more than 1Mohm.

Note 1 : Accessible Conductive Parts including Metal panels, Input terminals, Earphone jacks, etc.

Electrostatically Sensitive (ES) Devices

Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Electrostatically Sensitive (ES) Devices. Examples of typical ES 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 reasons prior to applying power to the unit under test.

2.After removing an electrical assembly equipped with ES 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 grouned-tip soldering iron to solder or unsolder ES devices.

4.Use only an anti-static solder removal device. Some solder removal devices not classified a “anti-static” can generate electrical charges sufficient to damage ES devices.

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

6.Do not remove a replacement ES device from its protective package until immediately before you are ready to install it. (Most replacement ES devices are packaged with leads electrically shorted together by conductive foam, aluminum foil, or comparable conductive material).

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

Caution : Be sure no power is applied to the chassis or

circuit, and observe all other safety precautions.

8.Minimize bodily motions when handling unpackaged replacement ES devices. (Normally 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 ES device.)

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SERVICE INFORMATION FOR EEPROM

POWER ON

Press number 0~8, Press charater A~F (1~6 for a while)

Press pause key once

Change will be applied when power

OFF-->ON.

Use arrow key (F D G E) to move to approprite position and make changes

DVD LOGO Status (NO Disk status)

Remotecontrol Pause key-->1-->4-->7-->2 in order.

MODEL :

NAME HEX

OPT 1 00 OPT 2 00 OPT 3 00 OPT 4 00 OPT 5 00 OPT 6 00 OPT 7 00 OPT 8 00

DETECT NEW EEPROM (OPTION EDIT SCREEN)

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SPECIFICATIONS

• GENERAL

Power requirements : AC 200-240V , 50/60Hz Power consumption : 8W Dimensions (Approx.) : 430 x 35 x 202mm (17 x 1.4 x 7.9inches) (W x H x D) without foot Net Weight (Approx.) : 1.9kg (4.2lbs) Operating temperature : 5°C to 35°C (41°F to 95°F) Operating humidity : 5% to 90%

• OUTPUTS

VIDEO OUT : 1.0V (p-p), 75Ω, sync negative, RCA jack x 1 / Scart (to TV) S-VIDEO OUT : (Y) 1.0 V (p-p), 75Ω, negative sync, Mini DIN 4-pin x 1

COMPONENT VIDEO OUT : (Y) 1.0 V (p-p), 75Ω, negative sync, RCA jack x 1

(Pb)/(Pr) 0.7 V (p-p), 75Ω, RCA jack x 2 AUDIO OUT : 2.0Vrms (1 KHz, 0 dB), 600Ω, RCA jack (L, R) x 1 / Scart (to TV) DIGITAL OUT (COAXIAL) : 0.5V (p-p), 75Ω, RCA jack x 1

Scart model only

• SYSTEM

Laser : Semiconductor laser, wavelength 650 nm Signal system : PAL/NTSC Frequency response : DVD (PCM 96kHz) : 8Hz to 44kHz

DVD (PCM 48 kHz) : 8Hz to 22kHz

CD : 8Hz to 20kHz Signal-to-noise ratio : More than 90dB (ANALOG OUT connectors only) Harmonic distortion : Less than 0.02% Dynamic range : More than 95dB (DVD/CD) Accessories : Video cable (1), Audio cable (1), Remote control (1), Batteries (2)

Note : Design and specifications are subject to change without prior notice.

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2-1

SECTION 2

CABINET & MAIN CHASSIS

CONTENTS

EXPLODED VIEWS

......................................................................................................................2-2

1. CABINET AND MAIN FRAME SECTION .................................................................................2-2

2. DECK MECHANISM SECTION (DP-11) ...................................................................................2-3

3. PACKING ACCESSORY SECTION ..........................................................................................2-4

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452

OPTIONAL PART

463/460

463

461

462

463/460

250

462

A48

A43

462

A44

A49

A42

A41

A46

P101

P8601

CABLE1

CN903

A47

300

A26

283

452

280

279

276

261

260

262

320

467

465

261

KARAOKE

MAIN

SMPS

5.1CH

SCART

KEY

TIMER

2-2

EXPLODED VIEWS

1. CABINET AND MAIN FRAME SECTION

275

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2-3

2. DECK MECHANISM SECTION (DP-11)

A26

A02

439

018

013

017

014

001

002

003

020

016

015B

015A

435

015

019

440

432

012A

010

439

431

435

030

024

025

036

A03

430

021

012A

012

026

A01

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2-4

3. PACKING ACCESSORY SECTION

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3-1

SECTION 3

ELECTRICAL

CONTENTS

ELECTRICAL TROUBLESHOOTING GUIDE......................................................................3-2

1. POWER CHECK FLOW ..........................................................................................................3-2

2. SYSTEM OPERATION FLOW.................................................................................................3-3

3. SYSTEM TEST FLOW.............................................................................................................3-4

DETAILS AND WAVEFORMS ON SYSTEM TEST AND DEBUGGIBG

...........................3-10

1. SYSTEM 27MHZ CLOCK, RESET, FLASH R/W SIGNAL ...................................................3-10

2. SDRAM CLOCK ....................................................................................................................3-12

3. TRAY OPEN/CLOSE SIGNAL...............................................................................................3-12

4. SLED CONTROL RELATED SIGNAL (NO DISC CONDITION)...........................................3-13

5. LENS CONTROL RELATED SIGNAL (NO DISC CONDITION)...........................................3-13

6. LASER POWER CONTROL RELATED SIGNAL (NO DISC CONDITION) .........................3-14

7. DISC TYPE JUDGEMENT WAVEFORM...............................................................................3-14

8. FOCUS ON WAVEFORM ......................................................................................................3-16

9. SPINDLE CONTROL WAVEFORM (NO DISC CONDITION) ...............................................3-17

10. TRACKING CONTROL RELATED SIGNAL (SYSTEM CHECKING) ..................................3-18

11. MT1389E AUDIO OPTICAL AND COAXIAL OUTPUT (SPDIF)...........................................3-19

12. MT1389E VIDEO OUTPUT WAVEFORM..............................................................................3-19

13. AUDIO OUTPUT FROM MT1389E........................................................................................3-20

CONNECTOR PICTURE

...........................................................................................................3-21

1. FULL CONNECTOR PICTURE .............................................................................................3-21

2. CN201 CONNECTOR PICTURE ...........................................................................................3-22

3. CN202 CONNECTOR PICTURE ...........................................................................................3-22

4. CN601 CONNECTOR PICTURE ...........................................................................................3-23

5. CN602 CONNECTOR PICTURE ...........................................................................................3-23

6. CN605 CONNECTOR PICTURE ...........................................................................................3-24

7. CN703 CONNECTOR PICTURE ...........................................................................................3-24

8. CN704 CONNECTOR PICTURE ...........................................................................................3-25

9. P101 CONNECTOR PICTURE..............................................................................................3-25

BLOCK DIAGRAMS

...................................................................................................................3-26

1. OVERALL BLOCK DIAGRAM ..............................................................................................3-26

2. POWER SUPPLY BLOCK DIAGRAM...................................................................................3-27

3. SERVO BLOCK DIAGRAM...................................................................................................3-28

4. MPEG & MEMORY BLOCK DIAGRAM................................................................................3-29

5. VIDEO BLOCK DIAGRAM ....................................................................................................3-30

6. AUDIO BLOCK DIAGRAM....................................................................................................3-31

CIRCUIT DIAGRAMS ................................................................................................................3-33

1. POWER (SMPS) CIRCUIT DIAGRAM ..................................................................................3-33

2. SYSTEM (MPEG) CIRCUIT DIAGRAM.................................................................................3-35

3. SERVO CIRCUIT DIAGRAM.................................................................................................3-37

4. AV/JACK CIRCUIT DIAGRAM ..............................................................................................3-39

5. KARAOKE & USB CIRCUIT DIAGRAM (8 & 9 TOOL)........................................................3-41

6. TIMER/KEY CIRCUIT DIAGRAM (4 & 7 TOOL)...................................................................3-43

7. TIMER/KEY CIRCUIT DIAGRAM (5 TOOL) .........................................................................3-45

8. TIMER/KEY CIRCUIT DIAGRAM (8 TOOL) .........................................................................3-47

9. TIMER/KEY CIRCUIT DIAGRAM (9 TOOL) .........................................................................3-49

• CIRCUIT VOLTAGE CHART ...................................................................................................3-51

PRINTED CIRCUIT DIAGRAMS ............................................................................................3-53

1. MAIN P.C.BOARD .................................................................................................................3-53

2. KEY P.C.BOARD ...................................................................................................................3-55

3. TIMER P.C.BOARD ...............................................................................................................3-55

4. KARAOKE P.C.BOARD (KARAOKE MODEL ONLY) ..........................................................3-56

5. SMPS P.C.BOARD ................................................................................................................3-57

6. SUB SCART (OPTIONAL PART)..........................................................................................3-58

7. SUB 5.1CH (OPTIONAL PART)............................................................................................3-58

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3-2

ELECTRICAL TROUBLESHOOTING GUIDE

Is 5.6V present at collector of Q126?

No 3.3VA

YES

Is 3.3V present at emitter of Q121?

YES

Is 3.3VA section working?

YES

Is 3.3VA section working?

YES

No 5V No 3.3VA.

Replace Q126. Check FR101 Replace Q121.

YES

Is there a DC voltage at Cathode of D105 or D107?

YES

Check D105/D106/D107/ D108 and replace.

Replace IC101.

1. POWER CHECK FLOW

A. B.

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3-3

Power on

1. 8032 initializes SERVO,DSP & RISC registers

2. Write RISC code to SDRAM

3. Reset RISC

Show LOGO

Tray closed ?

Tray close to closed position

SLED at inner side ?

SLED moves to inner position

1. Judge whether have disc and disc type

2. Jump to related disc reading procedure

Recieve OPEN/CLOSE Key?

1. Execute pressed Key & IR key

2. System operation routine loop

1. Stop playback & open Tray

2. Display tray open message & LOGO

Receive CLOSE Key?

YES

2. SYSTEM OPERATION FLOW

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3-4

3. SYSTEM TEST FLOW

TEST

Check the AC Voltage

Power PCBA(110V or 220V)

Replace power PCBA or AC transformer.

YES

Switch on the power PCBA

Is the DC voltage outputs OK?

(5V, 3.3V, 12V, 5.6V MOTOR)

Repair or Replace Power PCBA

YES

Make sure the main PCBA don't

short on VCCs and switch it on.

YES

Is 3.3V and 1.8V DC outputs

normal on main PCBA?

Check the regulators or related diodes.

YES

Connect to PC RS232 cable and

update the FLASH memory code.

Update FLASH successfully?

1. Check 27MHz system clock.

2. Check system reset circuit.

3. Check FLASH R/W enable signal PRD, RWR.

4. Check RS232 SIGNALS.

5. Check FLASH Memory related circuit.

YES

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3-5

RESET or Power on.

Show LOGO?

Flash memory

operates properly?

YES

Check connection lines between

FLASH & MT1389E and the FLASH

access time whether is suitable or not.

SDRAM works properly?

YES

Check connection lines between

SDRAM & MT1389E and

the SDRAM is damaged.

MT1389E VIDEO outputs properly?

YES

Check the related

circuit of MT1389E.

Have TV signal output?

YES

Check the filtering and amp

circuit of TV signal.

Check AV cable

connection to TV set.

Does tray move inside when

it is not at closed position?

Normal TROUT &

TRIN signals?

YES

Check the load OPEN &

CLOSE switch

Normal TRCLOSE &

TROPEN signal?

YES

Check the tray control I/O

pins on MT1389E & IP9008.

Normal LOAD+ &

LOAD-signal?

YES

Check the tray control

amplifying circuit on Motor driver.

Check the cable connection

between main PCBA and loader.

YES

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3-6

Does the SLED move to inner

side when it is at outter position?

Motor driver STBY

pin is high?

YES

Check the connection

line of STBY signal.

Is FMSO DC level higher than 1.4V?

YES

Check the related

circuit of FMSO.

SL+ and SL- output

properly?

YES

Check the amp circuit

on motor driver.

Check the cable

connection with MECHA.

Optical Lens has movements

for searching focus?

Do not put in disc

and tray close.

Proper FOSO outputs

to motor driver?

YES

Check FOSO connection on

MT1389E and motor dirver.

Proper F+ & F- outputs?

YES

Check the amp circuit

on motor dirver.

Check cable connect on

with pick-up head.

YES

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3-7

Laser turns on when

reading disc?

LD01 or LD02 output

properly?

YES

Check the laser power circuit on MT1389E and connecting

to power transistor.

Collector voltage of

power transistor is OK?

Check the related circuit on

laser power transistor.

Check cable connection

between transistor ouput and

pick-up head.

Disc ID is correct?

Laser offPut disc in?

Proper RFL signal

on MT1389E?

YES

Check the related circuit

on MT1389E RFL signal.

Check LDO1 & LDO2 signal

YES

Does spindle rotate?

Proper DMSO signal on

MT1389E.

YES

Check DMSO related

circuit on MT1389E.

SP+ & SP- output properly?

YES

Check the spindle control

amp circuit of motor driver.

Check the cable connection

between spindle and main PCBA.

YES

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3-8

Focus on OK?

Proper signals on

A, B, C, D of MT1389E

YES

Check connections between

MT1389E and pick-up head.

Check FEO signal

on MT1389E

Check the FOSO connection

on MT1389E and motor driver.

Check FOSO signal

on MT1389E

Track on OK?

Normal TEO Signal

on MT1389E?

YES

Check the related

circuit on MT1389E

YES

T+ & T- output

properly?

YES

Check the tracking control

amp circuit on motor driver.

Properly TRSO signal

on MT1389E?

YES

Check the TRSO

connection on MT1389E

and motor dirver.

Check cable connection

on pick-up head.

Disc is play ?

Check RFO & RFLVL

signal waveform.

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3-9

Normal Audio output

when disc playback?

Audio DAC received correct data stream?

YES

Check connection between

MT1389E & audio DAC.

Normal audio DAC out?

Check the related

circuit of audio DAC.

Check audio filter,

amplify, mute circuit.

Normal IR.VFD & Front

pannel key functions?

Communications between IR.VFD Front pannel key &

MT1389E is normally?

YES

Check communication

lines on MT1389E.

YES

TEST END

Check the cable connection

on Front pannel.

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3-10

DETAILS AND WAVEFORMS ON SYSTEM TEST AND DEBUGGIBG

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

1) MT1389E main clock is at 27MHz (X601)

FIG 1-1

2) MT1389E reset is low active

FIG 1-2

3.3V

PWR_CTL

IC602

RESET TIME

Page 22

3-11

3) RS232 waveforn during procedure (Downloading)

FIG 1-3

TXD

RXC

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

FIG 1-4

PRD

PWR

IC602

Page 23

3-12

2. SDRAM CLOCK

FIG 2-1

DCLK = 128MHz, Vp-p=2.2, Vmax=2.7V

IC603

3. TRAY OPEN/CLOSE SIGNAL

FIG 3-1

IC601

TRIN

TROUT

TRCLOSE

TROPEN

Page 24

3-13

4. SLED CONTROL RELATED SIGNAL (NO DISC CONDITION)

FIG 4-1

FMSO(1.9V/1.4V/1.1V)

STBY(3.3V)

SL+(4.2V/2.8V/1.2V)

SL-(4.2V/2.8V/1.5V)

5. LENS CONTROL RELATED SIGNAL (NO DISC CONDITION)

FOSO(1.5V/1.4V/1.3V)

F+(3.2V/2.7V/2.2V)

F-(3.2V/2.7V/2.2V)

FIG 5-1

Page 25

3-14

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

FIG 6-1

MDI1 (0V/180mV)

LD02 (3.3V/2.3V)

LD01 (3.3V/2.3V)

IC601

7. DISC TYPE JUDGEMENT WAVEFORM

F+

RFL

CN201

IC601

FIG 7-1 (DVD)

Page 26

3-15

FIG 7-2 (DVD)

F+

RFL

FIG 7-3 (CD)

F+

RFL

Page 27

3-16

FIG 7-4 (CD)

F+

RFL

8. FOCUS ON WAVEFORM

FOSO

F+

F-

IC601

FIG 8-1 (DVD)

Page 28

3-17

FIG 8-2 (CD)

FOSO

F+

F-

9. SPINDLE CONTROL WAVEFORM (NO DISC CONDITION)

DMSO (1.4V/1.8V)

SP(3.6V/2.4V)

SP+ (3.6V/4.8V)

FIG 9-1

Page 29

3-18

10. TRACKING CONTROL RELATED SIGNAL (SYSTEM CHECKING)

TRSO

T+

T-

TRSO

T+

T-

IC601

CN201

FIG 10-2 (CD)

FIG 10-1 (DVD)

Page 30

3-19

11. MT1389E AUDIO OPTICAL AND COAXIAL OUTPUT (SPDIF)

FIG 11-1

IC601

12. MT1389E VIDEO OUTPUT WAVEFORM

1) 100%

FIG 12-1

Page 31

3-20

2) COMPOSITE VIDEO SIGNAL

FIG 12-2

13. AUDIO OUTPUT FROM MT1389E

FIG 13-1

Page 32

3-21

CONNECTOR PICTURE

1. FULL CONNECTOR PICTURE

Page 33

3-22

CN201(22PIN)

2. CN201 CONNECTOR PICTURE

CN202 (9PIN)

3. CN202 CONNECTOR PICTURE

Page 34

3-23

CN601 (12PIN)

4. CN601 CONNECTOR PICTURE

CN602 (10PIN)

5. CN602 CONNECTOR PICTURE

Page 35

3-24

CN703 (12PIN)

7. CN703 CONNECTOR PICTURE

CN605 (5PIN)

6. CN605 CONNECTOR PICTURE

Page 36

3-25

CN704 (9PIN)

P101 (10PIN)

8. CN704 CONNECTOR PICTURE

9. P101 CONNECTOR PICTURE

Page 37

3-26

BLOCK DIAGRAMS

1. OVERALL BLOCK DIAGRAM

Page 38

3-27

2. POWER SUPPLY BLOCK DIAGRAM

Page 39

3-28

3. SERVO BLOCK DIAGRAM

Page 40

3-29

4. MPEG & MEMORY BLOCK DIAGRAM

Page 41

3-30

5. VIDEO BLOCK DIAGRAM

Page 42

3-31

6. AUDIO BLOCK DIAGRAM

Page 43

3-32

MEMO

Page 44

No Power D105~D108 are Defective

12V No Power Q123 is Defective

5V No Power Q126 is Defective

Switching Error IC102, IC103 are Defective

No Power FR101 is Defective

Switching Error IC101 is Defective

3.3V No Power Q121 is Defective

3-33 3-34

CIRCUIT DIAGRAMS

1. POWER (SMPS) CIRCUIT DIAGRAM

WHEN SERVICING THIS CHASSIS, UNDER NO CIRCUMSTANCES SHOULD THE ORIGINAL DESIGN BE MODIFIED OR ALTERED WITHOUT PERMISSION FROM THE LG CORPORATION. ALL COMPONENTS SHOULD BE REPLACED ONLY WITH TYPES IDENTICAL TO THOSE IN THE ORIGINAL CIRCUIT. SPECIAL COMPONENTS ARE SHADED ON THE

SCHEMATIC FOR EASY IDENTIFICATION. THIS CIRCUIT DIAGRAM MAY OCCASIONALLY DIFFER FROM THE ACTUAL CIRCUIT USED. THIS WAY, IMPLEMENTATION OF THE LATEST SAFETY AND PERFORMANCE IMPROVEMENT CHANGES INTO THE SET IS NOT DELAYED UNTILTHE NEW SERVICE LITERATURE IS PRINTED.

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.

IMPORTANT SAFETY NOTE :

Page 45

3-35 3-36

2. SYSTEM (MPEG) CIRCUIT DIAGRAM

Page 46

3-37 3-38

3. SERVO CIRCUIT DIAGRAM

Page 47

3-39 3-40

4. AV/JACK CIRCUIT DIAGRAM

Page 48

3-41 3-42

5. KARAOKE & USB CIRCUIT DIAGRAM (8 & 9 TOOL)

Page 49

3-43 3-44

6. TIMER/KEY CIRCUIT DIAGRAM (4 & 7 TOOL)

Page 50

3-45 3-46

7. TIMER/KEY CIRCUIT DIAGRAM (5 TOOL)

Page 51

3-47 3-48

8. TIMER/KEY CIRCUIT DIAGRAM (8 TOOL)

Page 52

3-49 3-50

9. TIMER/KEY CIRCUIT DIAGRAM (9 TOOL)

Page 53

3-51 3-52

• CIRCUIT VOLTAGE CHART

CAPACITOR

PIN NO. VOLTAGE

IC201

1 1.36 2 1.79 3 2.89 4 1.36 5 1.23 60 70 8 5.68

90 10 0 11 2.89 12 2.71 13 2.75 14 2.86 15 2.78 16 2.83 17 3.6 18 1.98 19 5.69 20 3.27 21 5.67 22 0 23 1.63 24 3.27 25 5.5 26 1.36 27 1.36 28 3.13

IC601

2 2.015

3 2.017

4 2.032

5 2.026

7 1.63

8 2.015

9 2.017 10 2.032 11 2.026

PIN NO. VOLTAGE

12 0.965 13 0.968 14 0.962 15 0.967 16 0.984 17 0.983 18 1.989 19 1.988 20 0.182 21 0.181 22 2.329 23 3.257 24 3.237 25 2.777 26 2.068 27 0 28 2.718 29 1.985 30 1.374 31 1.415 32 1.320 33 1.320 34 2.473 35 1.830 36 1.5 37 1.938 38 1.326 39 0 40 1.380 41 1.352 42 1.403 43 2.472 44 3.455 45 3.452 46 3.176 47 2.213 48 1.777 49 2.042 50 1.954 51 2.645 52 1.963

PIN NO. VOLTAGE

53 1.869 54 1.950 55 3.042 56 0.457 57 3.284 58 3.282 59 0.475 60 3.284 61 3.234 62 3.281 63 0.38 64 0.84 65 2.34 66 0.825 67 0.451 68 2.004 69 1.971 70 0.043 71 1.418 72 1.587 73 0.802 74 0 75 0.95 76 1.177 77 2.025 78 1.554 79 0.913 80 1.196 81 1.314 82 0.075 83 1.904 84 1.775 85 3.520 86 3.281 87 3.286 88 3.286 89 3.494 90 0.046 91 3.51 92 0.092 93 3.261

PIN NO. VOLTAGE

94 3.259 95 0.391 96 3.280 97 3.63 98 3.285

99 3.5 100 0.05 101 3.31 102 3.318 103 3.196 104 3.696 105 1.57 106 0.162 107 0.562 108 3.288 109 0.547 110 1.16 111 1.92 112 0.37 113 1.15 114 0 115 0.55 116 0.11 117 0.12 118 0.8 119 0 120 0 121 3.024 122 0.39 123 0.38 124 2.8 125 2.83 126 3.050 127 2.757 128 0.34 129 1.56 130 0.5 131 1.77 132 2.217 133 2.176 134 1.57

PIN NO. VOLTAGE

135 1.945 136 3.282 137 3.28 138 0.032 139 0.048 140 1.39 141 1.12 142 1.56 143 0.998 144 0 145 3.274 146 0 147 3.259 148 0 149 0 150 0 151 0 152 1.232 153 1.232 154 1.236 155 0 156 0.035 157 1.609 158 0 159 0 160 3.268 161 1.208 162 1.208 163 0 164 0.38 165 3.269 166 0 167 3.267 168 0.331 169 0.294 170 0.312 171 0.287 172 0 173 1.36 174 1.391 175 1.380

PIN NO. VOLTAGE

176 3.281 177 3.286 178 1.594 179 0 180 0 181 0 182 3.226 183 2.937 184 1.619 185 1.602 186 1.565 187 3.256 188 3.252 189 3.253 190 3.253 191 0 192 1.776 193 0.710 194 1.053 195 1.090 196 0 197 0 198 0.3 199 3.214 200 1.590 201 0 202 1.774 203 0.58 204 0.729 205 0 206 1.06 207 1.709 208 1.353 209 1.444 210 1.868 211 0 212 1.620 213 1.619 214 1.306 215 0.89 216 3.2

PIN NO. VOLTAGE

IC602

1 3.04 2 0.4 3 0.4 4 3.16 5 3.11 6 0.6 7 1.7 8 1.05

90 10 0.3 11 3.23 12 3.25 13 3.25 14 3.25 15 1.68 16 0 17 3.03 18 1.83 19 0 20 2.25 21 2.14 22 2.1 23 1.85 24 0 25 2.05 26 0 27 0 28 0 29 1.58 30 0 31 1.48 32 0 33 1.29 34 0 35 0.9 36 0 37 0.3 38 1.56 39 1.13 40 1.62

PIN NO. VOLTAGE

41 0 42 1.05 43 0 44 0.8 45 2.1 46 0 47 0.4 48 0.45

IC603

1 3.19 2 1.15 3 3.19 4 1.22 5 1.22 60 7 1.26 8 1.26

9 3.19 10 1.24 11 1.05 12 0 13 1.05 14 0 15 1.99 16 1.2 17 0 18 1.05 19 3.19 20 2 21 0.8 22 0 23 0.14 24 0 25 2.13 26 1.48 27 3.21 28 0 29 1.57 30 1.47 31 1.57 32 1.63

PIN NO. VOLTAGE

33 0 34 0 35 0 36 0.2 37 3.22 38 1.79 39 1.84 40 0 41 0 42 1.26 43 3.22 44 1.06 45 1.16 46 0 47 1.38 48 1.38 49 3.22 50 1.26 51 1.78 52 0 53 1.35 54 0.41

IC701

1 4.81 2 2.2 3 2.41 4 1.86 5 4.82 6 1.85 70 8 2.27

9 2.27 10 0 11 2.25 12 2.24 13 2.44 14 2.33 15 1.98 16 2.24

LOC When PLAY +

C202 220UF SRA,SS 6.3V 20% FM5 TP 5 3.3 0

C204 220UF SRA,SS 6.3V 20% FM5 TP 5 5 0

C205 47UF SRA,SS 6.3V 20% FM5 TP 5 3.3 2.4

C206 47UF SRA,SS 6.3V 20% FM5 TP 5 3.3 3.3

C217 100UF SRA,SS 6.3V 20% FM5 TP 5 4.9 0

C210 10UF SRA,SS 6.3V 20% FM5 TP 5 3.3 0.1

C220 220UF SRA,SS 6.3V 20% FM5 TP 5 5.5 0

C240 220UF SRA,SS 6.3V 20% FM5 TP 5 1.8 0

C6C1 1000000000PF SMS,SG 6.3V 20% F 3.3 0

LOC When PLAY +

C6C2 10UF SRA,SS 16V 20% FM5 TP 5 3.3 0.1

C6C3 100UF SRA,SS 6.3V 20% FM5 TP 5 3.3 0.1

C6C6 10UF SRA,SS 16V 20% FM5 TP 5 3.3 0.1

C6C9 220UF SRA,SS 6.3V 20% FM5 TP 5 3.3 0.1

C6E0 47UF SRA,SS 6.3V 20% FM5 TP 5 2.8 0

C6E1 10UF SRA,SS 16V 20% FM5 TP 5 1.6 0.1

C6E2 47UF SRA,SS 6.3V 20% FM5 TP 5 1.4 0

C6E3 220UF SRA,SS 6.3V 20% FM5 TP 5 3.3 0

C6E4 220UF SRA,SS 6.3V 20% FM5 TP 5 3.3 0.1

LOC When PLAY +

C6E5 10UF SRA,SS 16V 20% FM5 TP 5 1.4 0.1

C6E6 100UF SRA,SS 6.3V 20% FM5 TP 5 3.3 0.1

C6E7 47UF SRA,SS 6.3V 20% FM5 TP 5 2 0

C6E8 10UF SRA,SS 16V 20% FM5 TP 5 0 0

C6E9 10UF SRA,SS 16V 20% FM5 TP 5 3.3 0

C6K7 10UF SRA,SS 16V 20% FM5 TP 5 12.2 0

C704 47UF SRA,SS 6.3V 20% FM5 TP 5 4.9 0.1

C706 10UF SRA,SS 16V 20% FM5 TP 5 4.9 0

C710 470UF SR,SV 6.3V 20% FM5 TP 5 2.3 0

LOC When PLAY +

C717 1UF SRA,SS 50V 20% FM5 TP 5 2 0.7

C728 10UF SRA,SS 16V 20% FM5 TP 5 12.2 0.1

C730 22UF SRA,SS 16V 20% FM5 TP 5 5.5 1.7

C731 22UF SRA,SS 16V 20% FM5 TP 5 5.5 0

C732 22UF SRA,SS 16V 20% FM5 TP 5 5.5 1.7

C734 22UF SRA,SS 16V 20% FM5 TP 5 5.5 0

C735 22UF SRA,SS 16V 20% FM5 TP 5 5.5 0.1

C750 220UF SRA,SS 6.3V 20% FM5 TP 5 5 0

Page 54

3-53 3-54

PRINTED CIRCUIT DIAGRAMS

1. MAIN P.C.BOARD

(TOP VIEW) (BOTTOM VIEW)

Page 55

2. KEY P.C.BOARD

(4 TOOL)

3. TIMER P.C.BOARD

(4 TOOL)

KARAOKE P.C.BOARD

(4 TOOL)

(KARAOKE MODEL ONLY)

(5 TOOL)

(7 TOOL)

(8 TOOL)

(5 TOOL)

(7 TOOL)

(8 TOOL)

(5 TOOL)

(7 TOOL)

(8 TOOL)

(9 TOOL)

(9 TOOL, WITHOUT)

3-55 3-56

Page 56

3-57 3-58

5. SMPS P.C.BOARD 6. SUB SCART (OPTIONAL PART)

(430mm)

7. SUB 5.1CH (OPTIONAL PART)

(430mm)

Page 57

3-59 3-60

MEMO MEMO

Page 58

4-1

SECTION 4

MECHANISM (DP-11)

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

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...................................................................................4-7

Page 59

4-2

DECK MECHANISM PARTS LOCATION

• TOP VIEW (WITHOUT TRAY)

Procedure

Parts Fixing Type

Disass Fig-

Starting No.

embly ure

1 Main Base 4-1

Clamp Assembly

4-1

Disc

1, 2 3 Plate Clamp 4-1

1, 2, 3 4 Magnet Clamp 4-1

1, 2, 3, 4 5 Clamp Upper 4-1

16Tray Disc 4-2

1, 6 7 Base Assembly Sled 4-3

4 Screws,

1, 2, 6 8 Gear Feed 1 Connector 4-3

1 Locking Tabs

1, 2, 6, 8 9 Gear Middle

1, 2, 6, 8,

10 Gear Rack 1 Screw 4-3

1, 2, 7 11 Rubber Rear 4-3

1, 2, 7 12

Frame Assembly

1 Screw Bottom 4-4

Up/Down

1, 2 13 Belt Loading 1 Locking Tab 4-4

1, 2 ,13 14 Gear Pulley 4-4

1, 2, 13, 14 15 Gear Loading 1 Locking Tab 4-4

1, 2, 7, 12,

16 Guide Up/Down 4-4

13, 14

1, 2, 13 17 PWB Assembly

1 Locking Tab

Bottom 4-4

1 Hook 2Screw

1, 2, 7, 12, 13, 14, 15, 18 Base Main 2 Locking Tabs 4-4 16, 17

• TOP VIEW (WITH TRAY)

• BOTTOM VIEW

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.

Page 60

4-3

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 the Lever(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.

DECK MECHANISM DISASSEMBLY

FIG. 4-1 FIG. 4-2

Page 61

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

1) Release the Scerw (S3)

4. RUBBER REAR (FIG. 4-3)

FIG. 4-3

Page 62

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)

FIG. 4-4

Page 63

4-6

MEMO

Page 64

001

002

003

020

439

018

013

017

015B

015A

440

019

012

015

012

432

030

010

439

431

435

021

430

024

025

036

012A

026

016

435

014

A01

A02

A03

A00

4-7 4-8

EXPLODED VIEW

1. DECK MECHANISM EXPLODED VIEW DP-11

Page 65

4-9 4-10

MEMO MEMO