DVD-VIDEO PLAYERSERVICE MANUAL

MODELS : DVX286/DV286/DV286K

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

MO

DE

LS

: DV

X286/D

V286/D

V286K

SE

RV

ICE

MA

NU

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P/N : AFN31629357 JANUARY, 2007

http://biz.lgservice.com

CONTENTS

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

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

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

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

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

1-2

SECTION 1

SUMMARY

CONTENTS

PRODUCT SAFETY SERVICING GUIDELINES FOR DVD PRODUCTS..................1-3SERVICING PRECAUTIONS ....................................................................................1-4

• GENERAL SERVICING PRECAUTIONS• INSULATION CHECKING PRODEDURE• ELECTROSTATICALLY SENSITIVE (ES) DEVICES

SERVICE INFORMATION FOR EEPROM................................................................1-5SPECIFICATIONS .....................................................................................................1-6

1-3

PRODUCT SAFETY SERVICING GUIDELINES FOR DVD PRODUCTSCAUTION : DO NOT ATTEMPT TO MODIFY THIS PRODUCT IN ANY WAY, NEVERPERFORM CUSTOMIZED INSTALLATIONS WITHOUT MANUFACTURER’SAPPROVAL. UNAUTHORIZED MODIFICATIONS WILL NOT ONLY VOID THEWARRANTY, BUT MAY LEAD TO YOUR BEING LIABLE FOR ANY RESULTINGPROPERTY DAMAGE OR USER INJURY.

SERVICE WORK SHOULD BE PERFORMED ONLYAFTER YOU ARE THOROUGHLYFAMILIAR WITH ALL OF THE FOLLOWING SAFETY CHECKS AND SERVICINGGUIDELINES. TO DO OTHERWISE, INCREASES THE RISK OF POTENTIALHAZARDS AND INJURY TO THE USER.

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

SAFETY CHECKS

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

SUBJECT : FIRE & SHOCK HAZARD

1.BE SURE THAT ALL COMPONENTS ARE POSITIONED IN SUCH AWAY AS TOAVOID POSSIBILITY OF ADJACENT COMPONENT SHORTS. THIS IS ESPECIALLYIMPORTANT ON THOSE MODULES WHICH ARE TRANSPORTED TO AND FROMTHE REPAIR SHOP.

2.NEVER RELEASE A REPAIR UNLESS ALL PROTECTIVE DEVICES SUCH ASINSULATORS, BARRIERS, COVERS, SHIELDS, STRAIN RELIEFS, POWERSUPPLY CORDS, AND OTHER HARDWARE HAVE BEEN REINSTALLED PERORIGINAL DESIGN. BE SURE THAT THE SAFETY PURPOSE OF THE POLARIZEDLINE PLUG HAS NOT BEEN DEFEATED.

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

4.CHECK FOR PHYSICAL EVIDENCE OF DAMAGE OR DETERIORATION TO PARTSAND COMPONENTS. FOR FRAYED LEADS, DAMAGED INSULATION (INCLUDINGA.C. CORD). AND REPLACE IF NECESSARY FOLLOW ORIGINAL LAYOUT, LEADLENGTH AND DRESS.

5.NO LEAD OR COMPONENT SHOULD TOUCH ARECIVING TUBE OR ARESISTORRATED AT 1 WATT OR MORE. LEAD TENSION AROUND PROTRUNING METALSURFACES MUST BE AVOIDED.

6.ALL CRITICAL COMPONENTS SUCH AS FUSES, FLAMEPROOF RESISTORS,CAPACITORS, ETC. MUST BE REPLACED WITH EXACT FACTORY TYPES, DONOT USE REPLACEMENT COMPONENTS OTHER THAN THOSE SPECIFIED ORMAKE UNRECOMMENDED CIRCUIT MODIFICATIONS.

7.AFTER RE-ASSEMBLY OF THE SET ALWAYS PERFORM AN A.C. LEAKAGE TESTON ALL EXPOSED METALLIC PARTS OF THE CABINET, (THE CHANNELSELECTOR KNOB, ANTENNATERMINALS. HANDLE AND SCREWS) TO BE SURETHE SET IS SAFE TO OPERATE WITHOUT DANGER OF ELECTRICALSHOCK. DONOT USE A LINE ISOLATION TRANSFORMER DURING THIS TEST USE AN A.C.VOLTMETER, HAVING 5000 OHMS PER VOLT OR MORE SENSITIVITY, IN THEFOLLOWING MANNER; CONNECT A 1500 OHM 10 WATT RESISTOR,PARALLELED BY A .15 MFD. 150.V A.C TYPE CAPACITOR BETWEEN A KNOWNGOOD EARTH GROUND (WATER PIPE, CONDUIT, ETC.) AND THE EXPOSEDMETALLIC PARTS, ONE AT A TIME. MEASURE THE A.C. VOLTAGE ACROSS THECOMBINATION OF 1500 OHM RESISTOR AND .15 MFD CAPACITOR. REVERSETHE A.C. PLUG AND REPEAT A.C. VOLTAGE MEASUREMENTS FOR EACHEXPOSED METALLIC PART.VOLTAGE MEASURED MUST NOT EXCEED 75 VOLTS R.M.S. THISCORRESPONDS TO 0.5 MILLIAMP A.C ANY VALUE EXCEEDING THIS LIMITCONSTITUTES A POTENTIAL SHOCK HAZARD AND MUST BE CORRECTEDIMMEDIATELY.

SUBJECT : GRAPHIC SYMBOLS

THE LIGHTNING FLASH WITH APROWHEAD SYMBOL. WITHIN ANEQUILATERAL TRIANGLE, IS INTENDED TO ALERT THE SERVICEPERSONNEL TO THE PRESENCE OF UNINSULATED “DANGEROUSVOLTAGE” THAT MAY BE OF SUFFICIENT MAGNITUDE TOCONSTITUTE A RISK OF ELECTRIC SHOCK.

THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIANGLE ISINTENDED TO ALERT THE SERVICE PERSONNEL TO THEPRESENCE OF IMPORTANT SAFETY INFORMATION IN SERVICELITERATURE.

SUBJECT : X-RADIATION

1.BE SURE PROCEDURES AND INSTRUCTIONS TO ALL SERVICE PERSONNELCOVER THE SUBJECT OF X-RADIATION. THE ONLY POTENTIAL SOURCE OF X-RAYS IN CURRENT T.V. RECEIVERS IS THE PICTURE TUBE. HOWEVER, THISTUBE DOES NOT EMIT X-RAYS WHEN THE HIGH VOLTAGE IS AT THE FACTORYSPECIFIED LEVEL. THE PROPER VALUE IS GIVEN IN THE APPLICABLESCHEMATIC. OPERATION AT HIGHER VOLTAGES MAY CAUSE A FAILURE OFTHE PICTURE TUBE OR HIGH VOLTAGE SUPPLY AND, UNDER CERTAINCIRCUMSTANCES, MAY PRODUCE RADIATION IN EXCESS OF DESIRABLELEVELS.

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 ACCURATEAND RELIABLE HIGH VOLTAGE METER. THE CALIBRATION OF THE METERSHOULD BE CHECKED PERIODICALLY AGAINST A REFERENCE STANDARD,SUCH AS THE ONE AVAILABLE AT YOUR DISTRIBUTOR.

4.WHEN THE HIGH VOLTAGE CIRCUITRY IS OPERATING PROPERLYTHERE IS NOPOSSIBILITY OF AN X-RADIATION PROBLEM. EVERY TIME ACOLOR CHASSIS ISSERVICED. THE BRIGHTNESS SHOULD BE RUN UP AND DOWN WHILEMONITORING THE HIGH VOLTAGE WITH A METER TO BE CERTAIN THAT THEHIGH VOLTAGE DOES NOT EXCEED THE SPECIFIED VALUE AND THAT IT ISREGULATING CORRECTLY, WE SUGGEST THAT YOU AND YOUR SERVICEORGANIZATION REVIEW TEST PROCEDURES SO THAT VOLTAGE REGULATIONIS ALWAYS CHECKED AS ASTANDARD SERVICING PROCEDURE. AND THATTHEHIGH VOLTAGE READING BE RECORDER ON EACH CUSTOMER’S INVOICE.

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

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

SUBJECT : IMPLOSION

1.ALL DIRECT VIEWED PICTURE TUBES ARE EQUIPPED WITH AN INTE GRALIMPLOSION PROTECTION SYSTEM, BUT CARE SHOULD BE TAKEN TO AVOIDDAMAGE DURING INSTALLATION, AVOID SCRATCHING THE TUBE. IFSCRATCHED 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 ORCLOSELY FITTING SHELF SPACE. OVER OR CLOSE TO HEAT DUCT, OR IN THEPATH OF HEATED AIR FLOW.

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

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

4.WALL AND SHELF MOUNTED INSTALLATIONS USING A COMMERCIALMOUNTING KIT. MUST FOLLOW THE FACTORY APPROVED MOUNTINGINSTRUCTIONS A PRODUCT MOUNTED TO A SHELF OR PLATFORM MUSTRETAIN ITS ORIGINAL FEET (OR THE EQUIVALENT THICKNESS IN SPACERS) TOPROVIDE ADEQUATE AIR FLOW ACROSS THE BOTTOM, BOLTS OR SCREWSUSED FOR FASTENERS MUST NOT TOUCH ANY PARTS OR WIRING. PERFORMLEAKAGE TEST ON CUSTOMIZED INSTALLATIONS.

5.CAUTION CUSTOMERS AGAINST THE MOUNTING OF APRODUCT ON SLOPINGSHELF OR A TILTED POSITION, UNLESS THE PRODUCT IS PROPERLYSECURED.

6.A PRODUCT ON A ROLL-ABOUT CART SHOULD BE STABLE ON ITS MOUNTINGTO THE CART. CAUTION THE CUSTOMER ON THE HAZARDS OF TRYING TOROLL A CART WITH SMALL CASTERS ACROSS THRESHOLDS OR DEEP PILECARPETS.

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

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

1-4

SERVICING PRECAUTIONS

CAUTION : Before servicing the DVD covered by this servicedata and its supplements and addends, read and follow theSAFETY PRECAUTIONS. NOTE : if unforeseencircumstances create conflict between the followingservicing precautions and any of the safety precautions inthis publications, always follow the safety precautions.Remembers Safety First:

General Servicing Precautions1.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 electricalplug or other electrical connection.

(3) Connecting a test substitute in parallel with anelectrolytic capacitor.

Caution : A wrong part substitution or incorrect polarityinstallation of electrolytic capacitors mayresult in an explosion hazard.

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

3.Unless specified otherwise in this service data, cleanelectrical contacts by applying an appropriate contactcleaning solution to the contacts with a pipe cleaner,cotton-tipped swab, or comparable soft applicator. Unlessspecified otherwise in this service data, lubrication ofcontacts is not required.

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

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

6.Always connect test instrument ground lead to theappropriate ground before connection the test instrumentpositive lead. Always remove the test instrument groundlead last.

Insulation Checking ProcedureDisconnect the attachment plug from the AC outlet and turnthe power on. Connect an insulation resistance meter(500V)to the blades of the attachment plug. The insulationresistance between each blade of the attachment plug andaccessible conductive parts (Note 1) should be more than1Mohm.

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

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

1. Immediately before handling any semiconductorcomponent or semiconductor-equipped assembly, drain offany electrostatic charge on your body by touching a knownearth ground.Alternatively, obtain and wear a commercially availabledischarging wrist strap device, which should be removedfor potential shock reasons prior to applying power to theunit under test.

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

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

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

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

6.Do not remove a replacement ES device from itsprotective package until immediately before you are readyto install it. (Most replacement ES devices are packagedwith leads electrically shorted together by conductivefoam, aluminum foil, or comparable conductive material).

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

Caution : Be sure no power is applied to the chassis orcircuit, and observe all other safety precautions.

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

1-5

SERVICE INFORMATION FOR EEPROM

POWER ON

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

Press pause key once

Change will be applied when powerOFF-->ON.

Use arrow key (F D G E) to moveto approprite position and makechanges

DVD LOGO Status (NO Disk status)

RemotecontrolPause key-->1-->4-->7-->2 in order.

MODEL : NAME HEXOPT 1 00OPT 2 00OPT 3 00OPT 4 00OPT 5 00OPT 6 00OPT 7 00OPT 8 00

DETECT NEW EEPROM(OPTION EDIT SCREEN)

1-6

SPECIFICATIONS

• GENERAL

Power requirements : AC 200-240V , 50/60HzPower consumption : 8WDimensions (Approx.) : 430 x 35 x 202mm (17 x 1.4 x 7.9inches) (W x H x D) without footNet 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

(C) 0.3 V (p-p), 75ΩCOMPONENT 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 2AUDIO 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 nmSignal system : PAL/NTSCFrequency response : DVD (PCM 96kHz) : 8Hz to 44kHz

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

2-1

SECTION 2

CABINET & MAIN CHASSIS

CONTENTS

EXPLODED VIEWS......................................................................................................................2-21. CABINET AND MAIN FRAME SECTION .................................................................................2-22. DECK MECHANISM SECTION (DP-11) ...................................................................................2-33. PACKING ACCESSORY SECTION ..........................................................................................2-4

45

2

A

C

D

B

A

C

B

DOPTIONAL PART

46

3/4

60

46

3/4

60

46

34

61

46

2

46

24

63

/46

0

25

04

62

A4

8

A4

3

46

2

A4

4

A4

9

A4

2

A4

1

A4

6

P1

01

P8

60

1

CA

BL

E1

CN

90

3

A4

7

30

0

A2

6

28

3

45

2

28

0 27

9

27

6

26

1

26

1

26

0

26

2

32

0

46

7

46

5

26

1

KA

RA

OK

E

MA

IN

SM

PS

5.1

CH

SC

AR

TK

EY

TIM

ER

2-2

EXPLODED VIEWS

1. CABINET AND MAIN FRAME SECTION

27

5

2-3

2. DECK MECHANISM SECTION (DP-11)

A26

A02

439

018

013

017

014

001

002

003

020

016015B

015A

435

015

019

440 432

012A

010439

431

435

030

024

025

036

A03

430

021

012A

012

012

026

A01

2-4

3. PACKING ACCESSORY SECTION

3-1

SECTION 3

ELECTRICAL

CONTENTS

ELECTRICAL TROUBLESHOOTING GUIDE......................................................................3-21. POWER CHECK FLOW ..........................................................................................................3-22. SYSTEM OPERATION FLOW.................................................................................................3-33. SYSTEM TEST FLOW.............................................................................................................3-4

DETAILS AND WAVEFORMS ON SYSTEM TEST AND DEBUGGIBG ...........................3-101. SYSTEM 27MHZ CLOCK, RESET, FLASH R/W SIGNAL ...................................................3-102. SDRAM CLOCK ....................................................................................................................3-12 3. TRAY OPEN/CLOSE SIGNAL...............................................................................................3-124. SLED CONTROL RELATED SIGNAL (NO DISC CONDITION)...........................................3-135. LENS CONTROL RELATED SIGNAL (NO DISC CONDITION)...........................................3-136. LASER POWER CONTROL RELATED SIGNAL (NO DISC CONDITION) .........................3-147. DISC TYPE JUDGEMENT WAVEFORM...............................................................................3-148. FOCUS ON WAVEFORM ......................................................................................................3-169. SPINDLE CONTROL WAVEFORM (NO DISC CONDITION) ...............................................3-17

10. TRACKING CONTROL RELATED SIGNAL (SYSTEM CHECKING) ..................................3-1811. MT1389E AUDIO OPTICAL AND COAXIAL OUTPUT (SPDIF)...........................................3-1912. MT1389E VIDEO OUTPUT WAVEFORM..............................................................................3-1913. AUDIO OUTPUT FROM MT1389E........................................................................................3-20

CONNECTOR PICTURE...........................................................................................................3-211. FULL CONNECTOR PICTURE .............................................................................................3-212. CN201 CONNECTOR PICTURE ...........................................................................................3-223. CN202 CONNECTOR PICTURE ...........................................................................................3-224. CN601 CONNECTOR PICTURE ...........................................................................................3-235. CN602 CONNECTOR PICTURE ...........................................................................................3-236. CN605 CONNECTOR PICTURE ...........................................................................................3-247. CN703 CONNECTOR PICTURE ...........................................................................................3-248. CN704 CONNECTOR PICTURE ...........................................................................................3-259. P101 CONNECTOR PICTURE..............................................................................................3-25

BLOCK DIAGRAMS...................................................................................................................3-261. OVERALL BLOCK DIAGRAM ..............................................................................................3-262. POWER SUPPLY BLOCK DIAGRAM...................................................................................3-273. SERVO BLOCK DIAGRAM...................................................................................................3-284. MPEG & MEMORY BLOCK DIAGRAM................................................................................3-295. VIDEO BLOCK DIAGRAM ....................................................................................................3-306. AUDIO BLOCK DIAGRAM....................................................................................................3-31

CIRCUIT DIAGRAMS ................................................................................................................3-331. POWER (SMPS) CIRCUIT DIAGRAM ..................................................................................3-332. SYSTEM (MPEG) CIRCUIT DIAGRAM.................................................................................3-353. SERVO CIRCUIT DIAGRAM.................................................................................................3-374. AV/JACK CIRCUIT DIAGRAM ..............................................................................................3-395. KARAOKE & USB CIRCUIT DIAGRAM (8 & 9 TOOL)........................................................3-416. TIMER/KEY CIRCUIT DIAGRAM (4 & 7 TOOL)...................................................................3-437. TIMER/KEY CIRCUIT DIAGRAM (5 TOOL) .........................................................................3-458. TIMER/KEY CIRCUIT DIAGRAM (8 TOOL) .........................................................................3-479. TIMER/KEY CIRCUIT DIAGRAM (9 TOOL) .........................................................................3-49• CIRCUIT VOLTAGE CHART...................................................................................................3-51

PRINTED CIRCUIT DIAGRAMS ............................................................................................3-531. MAIN P.C.BOARD .................................................................................................................3-532. KEY P.C.BOARD ...................................................................................................................3-553. TIMER P.C.BOARD ...............................................................................................................3-554. KARAOKE P.C.BOARD (KARAOKE MODEL ONLY) ..........................................................3-565. SMPS P.C.BOARD ................................................................................................................3-576. SUB SCART (OPTIONAL PART)..........................................................................................3-587. SUB 5.1CH (OPTIONAL PART) ............................................................................................3-58

3-2

ELECTRICAL TROUBLESHOOTING GUIDE

Is 5.6V present at collectorof Q126?

No 3.3VA

YES

Is 3.3V present at emitterof 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 atCathode of D105 or D107?

YES

NO

NO

NO

NO

Check D105/D106/D107/D108 and replace.

Replace IC101.

1. POWER CHECK FLOWA. B.

3-3

Power on

1. 8032 initializes SERVO,DSP & RISC registers2. Write RISC code to SDRAM3. 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 type2. Jump to related disc reading procedure

Recieve OPEN/CLOSE Key?

1. Execute pressed Key & IR key2. System operation routine loop

1. Stop playback & open Tray2. Display tray open message & LOGO

Receive CLOSE Key?

NO

YES

YES

NO

YES

YES

NO

NO

2. SYSTEM OPERATION FLOW

3-4

3. SYSTEM TEST FLOW

TEST

Check the AC VoltagePower PCBA(110V or 220V)

Replace power PCBA or AC transformer.

YES

NO

Switch on the power PCBA

Is the DC voltage outputs OK?(5V, 3.3V, 12V, 5.6V MOTOR)

Repair or Replace Power PCBA

YES

NO

Make sure the main PCBA don'tshort on VCCs and switch it on.

YES

Is 3.3V and 1.8V DC outputsnormal on main PCBA?

Check the regulators or related diodes.

YES

NO

Connect to PC RS232 cable andupdate 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.

NO

A

YES

3-5

A

RESET or Power on.

Show LOGO? NO Flash memoryoperates properly?

NO

YES

Check connection lines betweenFLASH & MT1389E and the FLASH

access time whether is suitable or not.

SDRAM works properly? NO

YES

Check connection lines betweenSDRAM & MT1389E andthe SDRAM is damaged.

MT1389E VIDEOoutputs properly?

NO

YES

Check the relatedcircuit of MT1389E.

Have TV signal output? NO

YES

Check the filtering and ampcircuit of TV signal.

Check AV cableconnection to TV set.

Does tray move inside whenit is not at closed position?

NO Normal TROUT &TRIN signals?

NO

YES

Check the load OPEN &CLOSE switch

Normal TRCLOSE &TROPEN signal?

NO

YES

Check the tray control I/Opins on MT1389E & IP9008.

Normal LOAD+ &LOAD-signal?

NO

YES

Check the tray controlamplifying circuit on Motor driver.

BCheck the cable connection

between main PCBA and loader.

YES

YES

3-6

B

Does the SLED move to innerside when it is at outter position?

NO Motor driver STBYpin is high?

NO

YES

Check the connectionline of STBY signal.

Is FMSO DC levelhigher than 1.4V?

NO

YES

Check the relatedcircuit of FMSO.

SL+ and SL- outputproperly?

NO

YES

Check the amp circuiton motor driver.

Check the cableconnection with MECHA.

Optical Lens has movementsfor searching focus?

Do not put in discand tray close.

NO Proper FOSO outputsto motor driver?

NO

YES

Check FOSO connection onMT1389E and motor dirver.

Proper F+ & F- outputs? NO

YES

Check the amp circuiton motor dirver.

CCheck cable connect on

with pick-up head.

YES

YES

3-7

C

Laser turns on whenreading disc?

NO LD01 or LD02 outputproperly?

NO

YES

YES

Check the laser power circuiton MT1389E and connecting

to power transistor.

Collector voltage ofpower transistor is OK?

NO Check the related circuit onlaser power transistor.

Check cable connectionbetween transistor ouput and

pick-up head.

Disc ID is correct?

NOLaser offPut disc in?

NO Proper RFL signalon MT1389E?

NO

YES

Check the related circuiton MT1389E RFL signal.

Check LDO1 & LDO2 signal

YES

YES

Does spindle rotate? NO Proper DMSO signal onMT1389E.

NO

YES

Check DMSO relatedcircuit on MT1389E.

SP+ & SP- output properly? NO

YES

Check the spindle controlamp circuit of motor driver.

DCheck the cable connection

between spindle and main PCBA.

YES

YES

3-8

D

Focus on OK? NO Proper signals onA, B, C, D of MT1389E

NO

YES

YES

Check connections betweenMT1389E and pick-up head.

Check FEO signal on MT1389E

NO Check the FOSO connectionon MT1389E and motor driver.

Check FOSO signalon MT1389E

Track on OK? NO

NO

Normal TEO Signal on MT1389E?

NO

YES

Check the relatedcircuit on MT1389E

YES

YES

YES

T+ & T- outputproperly?

NO

YES

Check the tracking controlamp circuit on motor driver.

Properly TRSO signalon MT1389E?

NO

YES

Check the TRSOconnection on MT1389E

and motor dirver.

Check cable connectionon pick-up head.

Disc is play ?Check RFO & RFLVL

signal waveform.

E

3-9

E

Normal Audio outputwhen disc playback?

NO Audio DAC receivedcorrect data stream?

NO

YES

YES

Check connection betweenMT1389E & audio DAC.

Normal audio DAC out? NO Check the relatedcircuit of audio DAC.

Check audio filter,amplify, mute circuit.

Normal IR.VFD & Frontpannel key functions?

NO

NO

Communications betweenIR.VFD Front pannel key &

MT1389E is normally?

NO

YES

Check communicationlines on MT1389E.

YES

YES

TEST ENDCheck the cable connection

on Front pannel.

3-10

DETAILS AND WAVEFORMS ON SYSTEM TEST AND DEBUGGIBG

1. SYSTEM 27MHz CLOCK, RESET, FLASH R/W SIGNAL1) MT1389E main clock is at 27MHz (X601)

FIG 1-1

1

1

2) MT1389E reset is low active

FIG 1-2

2

3

4

3

3.3V

PWR_CTLIC602

RESET TIME

4

2

3-11

3) RS232 waveforn during procedure (Downloading)

FIG 1-3

5

6

TXD

RXC

5

6

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

FIG 1-4

7

8

PRD

PWR

7

8

IC602

3-12

2. SDRAM CLOCK

FIG 2-1

9 9

DCLK = 128MHz, Vp-p=2.2, Vmax=2.7VIC603

3. TRAY OPEN/CLOSE SIGNAL

FIG 3-1

10

11

12

13

11

IC601

10

12

13

TRIN

TROUT

TRCLOSE

TROPEN

3-13

4. SLED CONTROL RELATED SIGNAL (NO DISC CONDITION)

FIG 4-1

14

15

16

17

14

1617

15

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)

18

19

20

18

20

19

FOSO(1.5V/1.4V/1.3V)

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

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

FIG 5-1

3-14

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

FIG 6-1

21

22

23

22

23

21

MDI1(0V/180mV)

LD02(3.3V/2.3V)

LD01(3.3V/2.3V)

IC601

7. DISC TYPE JUDGEMENT WAVEFORM

24

25

2625

26

24

F+

FE

RFL

CN201

IC601

FIG 7-1 (DVD)

3-15

FIG 7-2 (DVD)

F+

FE

RFL

FIG 7-3 (CD)

F+

FE

RFL

3-16

FIG 7-4 (CD)

F+

FE

RFL

8. FOCUS ON WAVEFORM

27

28

29

30

27

28

29

30

FE

FOSO

F+

F-

IC601

FIG 8-1 (DVD)

3-17

FIG 8-2 (CD)

FE

FOSO

F+

F-

9. SPINDLE CONTROL WAVEFORM (NO DISC CONDITION)

31

32

33

31

32

33

DMSO(1.4V/1.8V)SP-(3.6V/2.4V)

SP+(3.6V/4.8V)

FIG 9-1

3-18

10. TRACKING CONTROL RELATED SIGNAL (SYSTEM CHECKING)

34

35

36

37

34

35

36

37

TE

TRSO

T+

T-

TE

TRSO

T+

T-

IC601

CN201

FIG 10-2 (CD)

FIG 10-1 (DVD)

3-19

11. MT1389E AUDIO OPTICAL AND COAXIAL OUTPUT (SPDIF)

FIG 11-1

38

38

IC601

12. MT1389E VIDEO OUTPUT WAVEFORM1) 100%

FIG 12-1

3-20

2) COMPOSITE VIDEO SIGNAL

FIG 12-2

13. AUDIO OUTPUT FROM MT1389E

FIG 13-1

3-21

CONNECTOR PICTURE

1. FULL CONNECTOR PICTURE

3-22

CN201(22PIN)

2. CN201 CONNECTOR PICTURE

CN202 (9PIN)

3. CN202 CONNECTOR PICTURE

3-23

CN601(12PIN)

4. CN601 CONNECTOR PICTURE

CN602 (10PIN)

5. CN602 CONNECTOR PICTURE

3-24

CN703 (12PIN)

7. CN703 CONNECTOR PICTURE

CN605 (5PIN)

6. CN605 CONNECTOR PICTURE

3-25

CN704 (9PIN)

P101 (10PIN)

8. CN704 CONNECTOR PICTURE

9. P101 CONNECTOR PICTURE

3-26

BLOCK DIAGRAMS

1. OVERALL BLOCK DIAGRAM

3-27

2. POWER SUPPLY BLOCK DIAGRAM

3-28

3. SERVO BLOCK DIAGRAM

3-29

4. MPEG & MEMORY BLOCK DIAGRAM

3-30

5. VIDEO BLOCK DIAGRAM

3-31

6. AUDIO BLOCK DIAGRAM

3-32

MEMO

No PowerD105~D108 are Defective 12V No Power

Q123 is Defective

5V No PowerQ126 is Defective

Switching ErrorIC102, IC103 are Defective

No PowerFR101 is Defective

Switching ErrorIC101 is Defective

3.3V No PowerQ121 is Defective

3-33 3-34

CIRCUIT DIAGRAMS1. POWER (SMPS) CIRCUIT DIAGRAM

WHEN SERVICING THIS CHASSIS, UNDER NOCIRCUMSTANCES SHOULD THE ORIGINAL DESIGNBE MODIFIED OR ALTERED WITHOUT PERMISSIONFROM THE LG CORPORATION. ALL COMPONENTSSHOULD BE REPLACED ONLY WITH TYPESIDENTICAL TO THOSE IN THE ORIGINAL CIRCUIT.SPECIAL COMPONENTS ARE SHADED ON THE

SCHEMATIC FOR EASY IDENTIFICATION. THISCIRCUIT 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.

1. Shaded( ) parts are critical for safety. Replace onlywith specified part number.

2. Voltages are DC-measured with a digital voltmeterduring Play mode.

IMPORTANT SAFETY NOTE :

3-35 3-36

2. SYSTEM (MPEG) CIRCUIT DIAGRAM

3-37 3-38

3. SERVO CIRCUIT DIAGRAM

3-39 3-40

4. AV/JACK CIRCUIT DIAGRAM

3-41 3-42

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

3-43 3-44

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

3-45 3-46

7. TIMER/KEY CIRCUIT DIAGRAM (5 TOOL)

3-47 3-48

8. TIMER/KEY CIRCUIT DIAGRAM (8 TOOL)

3-49 3-50

9. TIMER/KEY CIRCUIT DIAGRAM (9 TOOL)

3-51 3-52

• CIRCUIT VOLTAGE CHART

CAPACITOR

PIN NO. VOLTAGEIC201

1 1.362 1.793 2.894 1.365 1.236 07 08 5.689 010 011 2.8912 2.7113 2.7514 2.8615 2.7816 2.8317 3.618 1.9819 5.6920 3.2721 5.6722 023 1.6324 3.2725 5.526 1.3627 1.3628 3.13

IC6011 02 2.0153 2.0174 2.0325 2.0266 07 1.638 2.0159 2.01710 2.03211 2.026

PIN NO. VOLTAGE12 0.96513 0.96814 0.96215 0.96716 0.98417 0.98318 1.98919 1.98820 0.18221 0.18122 2.32923 3.25724 3.23725 2.77726 2.06827 028 2.71829 1.98530 1.37431 1.41532 1.32033 1.32034 2.47335 1.83036 1.537 1.93838 1.32639 040 1.38041 1.35242 1.40343 2.47244 3.45545 3.45246 3.17647 2.21348 1.77749 2.04250 1.95451 2.64552 1.963

PIN NO. VOLTAGE53 1.86954 1.95055 3.04256 0.45757 3.28458 3.28259 0.47560 3.28461 3.23462 3.28163 0.3864 0.8465 2.3466 0.82567 0.45168 2.00469 1.97170 0.04371 1.41872 1.58773 0.80274 075 0.9576 1.17777 2.02578 1.55479 0.91380 1.19681 1.31482 0.07583 1.90484 1.77585 3.52086 3.28187 3.28688 3.28689 3.49490 0.04691 3.5192 0.09293 3.261

PIN NO. VOLTAGE94 3.25995 0.39196 3.28097 3.6398 3.28599 3.5100 0.05101 3.31102 3.318103 3.196104 3.696105 1.57106 0.162107 0.562108 3.288109 0.547110 1.16111 1.92112 0.37113 1.15114 0115 0.55116 0.11117 0.12118 0.8119 0120 0121 3.024122 0.39123 0.38124 2.8125 2.83126 3.050127 2.757128 0.34129 1.56130 0.5131 1.77132 2.217133 2.176134 1.57

PIN NO. VOLTAGE135 1.945136 3.282137 3.28138 0.032139 0.048140 1.39141 1.12142 1.56143 0.998144 0145 3.274146 0147 3.259148 0149 0150 0151 0152 1.232153 1.232154 1.236155 0156 0.035157 1.609158 0159 0160 3.268161 1.208162 1.208163 0164 0.38165 3.269166 0167 3.267168 0.331169 0.294170 0.312171 0.287172 0173 1.36174 1.391175 1.380

PIN NO. VOLTAGE176 3.281177 3.286178 1.594179 0180 0181 0182 3.226183 2.937184 1.619185 1.602186 1.565187 3.256188 3.252189 3.253190 3.253191 0192 1.776193 0.710194 1.053195 1.090196 0197 0198 0.3199 3.214200 1.590201 0202 1.774203 0.58204 0.729205 0206 1.06207 1.709208 1.353209 1.444210 1.868211 0212 1.620213 1.619214 1.306215 0.89216 3.2

PIN NO. VOLTAGEIC602

1 3.042 0.43 0.44 3.165 3.116 0.67 1.78 1.059 010 0.311 3.2312 3.2513 3.2514 3.2515 1.6816 017 3.0318 1.8319 020 2.2521 2.1422 2.123 1.8524 025 2.0526 027 028 029 1.5830 031 1.4832 033 1.2934 035 0.936 037 0.338 1.5639 1.1340 1.62

PIN NO. VOLTAGE41 042 1.0543 044 0.845 2.146 047 0.448 0.45

IC6031 3.192 1.153 3.194 1.225 1.226 07 1.268 1.269 3.19

10 1.2411 1.0512 013 1.0514 015 1.9916 1.217 018 1.0519 3.1920 221 0.822 023 0.1424 025 2.1326 1.4827 3.2128 029 1.5730 1.4731 1.5732 1.63

PIN NO. VOLTAGE33 034 035 036 0.237 3.2238 1.7939 1.8440 041 042 1.2643 3.2244 1.0645 1.1646 047 1.3848 1.3849 3.2250 1.2651 1.7852 053 1.3554 0.41

IC7011 4.812 2.23 2.414 1.865 4.826 1.857 08 2.279 2.2710 011 2.2512 2.2413 2.4414 2.3315 1.9816 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

3-53 3-54

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

3-55 3-56

2. KEY P.C.BOARD(4 TOOL)

(5 TOOL)

(7 TOOL)

(8 TOOL)

(9 TOOL)

3. TIMER P.C.BOARD(4 TOOL)

(5 TOOL)

(7 TOOL)

(8 TOOL)

(9 TOOL)

4. KARAOKE P.C.BOARD (KARAOKE MODEL ONLY)(4 TOOL)

(5 TOOL)

(7 TOOL)

(8 TOOL)

(9 TOOL, WITHOUT)

3-57 3-58

5. SMPS P.C.BOARD 6. SUB SCART (OPTIONAL PART)(430mm)

7. SUB 5.1CH (OPTIONAL PART)(430mm)

3-59 3-60

MEMO MEMO

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 DISASSEMBLY1. 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 VIEW1. DECK MECHANISM EXPLODED VIEW...................................................................................4-7

4-2

DECK MECHANISM PARTS LOCATION

• TOP VIEW (WITHOUT TRAY) ProcedureParts Fixing Type

Disass Fig-

Starting No. embly ure

1 Main Base 4-1

1 2Clamp Assembly

4-1Disc

1, 2 3 Plate Clamp 4-1

1, 2, 3 4 Magnet Clamp 4-1

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

1 6 Tray 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

9

1, 2, 7 11 Rubber Rear 4-3

1, 2, 7 12Frame Assembly

1 Screw Bottom 4-4Up/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 4-413, 14

1, 2, 13 17 PWB Assembly1 Locking Tab

Bottom 4-4Loading

1 Hook2Screw

1, 2, 7, 12,13, 14, 15, 18 Base Main 2 Locking Tabs 4-416, 17

• TOP VIEW (WITH TRAY)

• BOTTOM VIEW

Note When reassembling, perform the procedure inreverse order.The “Bottom” on Disassembly column of aboveTable indicates the part should be disassembledat the Bottom side.

4-3

1. MAIN BASE (FIG. 4-1)1-1. Clamp Assembly Disc1) 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 Clamp1) Turn the Plate Clamp to counterclockwise

direction and then lift up the Plate Clamp.1-1-2. Magnet Clamp1-1-3. 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 theLever(B) in direction of arrow so that the TrayDisc is ejected about 15~20mm.

2) Pull the Tray Disc until it is separated from theBase Main completely.

DECK MECHANISM DISASSEMBLY

FIG. 4-1 FIG. 4-2

4-4

3. BASE ASSEMBLY SLED (FIG. 4-3)1) Release 4 Screw (S2).2) Disconnect the FFC Connector (C1)3-1. Gear Feed3-2. Gear Middle

3-3. Gear Rack1) Release the Scerw (S3)

4. RUBBER REAR (FIG. 4-3)

FIG. 4-3

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 arrowand 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 theFrame Assembly Up/Down in the (B) portion ofthe 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 fromthe Base Main

8. GEAR LOADING (FIG. 4-4)9. GUIDE UP/DOWN (FIG. 4-4)

1) Move the Guide Up/Down in direction ofarrow(A) as Fig.(A)

2) Push the Locking Tab(L5) down and then lift upthe Guide Up/Down to separate it from the BaseMain.

NoteWhen reassembling place the Guide Up/Down asFig.(C) and move it in direction arrow(B) until it islocked by the Locking Tab(L5). And confirm the GuideUp/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

4-6

MEMO

001

002

003

020

439

018

013

017

015B

015A

440

019

012015

012

432

030

010439

431

435

021

430

024

025

036

012A

012A

026

016

435

014

A01

A02

A03

A00

4-7 4-8

EXPLODED VIEW1. DECK MECHANISM EXPLODED VIEW

DP-11

4-9 4-10

MEMO MEMO