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SERVICE MANUAL

DVD VIDEO PLAYER SERVICE MANUAL
MODELS : DK577XB/DK578XB/DK589XB (DK9753CEM/DK9853CEM/DK9966CEM)

MODELS : DK577XB/DK578XB/DK589XB(DK9753CEM/DK9853CEM/DK9966CEM)

CAUTION
BEFORE SERVICING THE UNIT, READ THE "SAFETY PRECAUTIONS" IN THIS MANUAL.

P/NO : 3829RHP038C

Printed in Korea JANUARY, 2005

CONTENTS
SECTION 1 . . . .SUMMARY SECTION 2 . . . .CABINET & MAIN CHASSIS SECTION 3 . . . .ELECTRICAL SECTION 4 . . . .REPLACEMENT PARTS LIST

SECTION 1 SUMMARY
CONTENTS

PRODUCT SAFETY SERVICING GUIDELINES FOR VIDEO PRODUCTS ........................... 1-3 SERVICING PRECAUTIONS .................................................................................................. 1-4
· General Servicing Precautions · Insulation Checking Prodedure · Electrostatically Sensitive Devices SPECIFICATIONS ...................................................................................................................... 1-5

1-2

PRODUCT SAFETY SERVICING GUIDELINES FOR VIDEO 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 ONLY AFTER 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. SUBJECT : X-RADIATION 1. BE SURE PROCEDURES AND INSTRUCTIONS TO ALL SERVICE PERSONNEL COVER THE SUBJECT OF X-RADIATION. THE ONLY POTENTIAL SOURCE OF X-RAYS 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 CALIBRA TION 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 EQUIVALENT THICKNESS 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.

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 A WAY 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 A RECIVING TUBE OR A RESISTOR 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 SET ALWAYS PERFORM AN A.C. LEAKAGE TEST ON ALL EXPOSED METALLIC PARTS OF THE CABINET, (THE CHANNEL SELECTOR KNOB, ANTENNA TERMINALS. 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. A.C. VOLTMETER

GOOD EARTH GROUND SUCH AS THE WATER PIPE. CONDUIT. ETC

PLACE THIS PROBE ON EACH EXPOSED METAL PART

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.

1-3

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 protec tive 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.)

1-4

SPECIFICATIONS
· GENERAL Power requirements: Power consumption: Dimensions (Approx.): Weight (Approx.): Operating temperature: Operating humidity: · OUTPUTS VIDEO OUT: COMPONENT VIDEO OUT: AUDIO OUT: 1 Vp-p 75 , sync negative, RCA jack x 1 / SCART (TO TV) (Y) 1.0 V (p-p), 75 ,negative sync, RCA jack x 1 (Pb)/(Pr) 0.7 V (p-p), 75 , RCA jack x 2 2.0 Vrms (1 KHz, 0 dB), 600 , RCA jack (L, R) x 1 / SCART (TO TV) 0.5 V (p-p), 75 , RCA jack x 1 AC 110-240 V , 50/60 Hz 8W 430 x 35 x 242 mm (W x H x D) without foot 1.9 kg 5 °C to 35 °C (41 °F to 95 °F) 5 % to 90 %

DIGITAL OUT (COAXIAL): · SYSTEM Laser: Signal system: Frequency response:

Signal-to-noise ratio: Harmonic distortion: Dynamic range: · ACCESSORIES Remote control (1), Batteries (2)

Semiconductor laser, wavelength 650 nm PAL / NTSC DVD (PCM 96 kHz): 8 Hz to 44 kHz DVD (PCM 48 kHz): 8 Hz to 22 kHz CD: 8 Hz to 20 kHz More than 100 dB (ANALOG OUT connectors only) Less than 0.008% More than 95 dB (DVD/CD)

1-5

SECTION 2 CABINET & MAIN CHASSIS
CONTENTS

EXPLODED VIEWS .....................................................................................................................2-2
1. Cabinet and Main Frame Section ...........................................................................................2-2 2. Deck Mechanism Section(DP-9) .............................................................................................2-3 3. Packing Accessory Section ....................................................................................................2-4

2-1

1
276

A41 A00 463 463

2
463

3

4

5

KARAOKE MODEL ONLY

1. Cabinet and Main Frame Section

A
283 A49 452 250 463 280 A47 A48 5.1CH Model ONLY 467 463 465 300 A46 320 261 260 A44 261

452

A42

279

KARAOKE MODEL ONLY

B

A43

463

EXPLODED VIEWS

2-2

C

D

2. Deck Mechanism Section(DP-9)

A00

001 002 439 014 013 020 003 018 A02 A01

017

012 015

435 015B 016 015A

019 440 432 026 012 030 012A

010 024 025 036 431 435 012A A03

021 035 430 035A 438

2-3

3. Packing Accessory Section

806 RF CABLE 810 CABLE SET ASS'Y 811 PLUG ASS'Y 1WAY(YELLOW)

812 PLUG ASS'Y 2WAY 808 BATTERY 820 PLUG ASS'Y 1WAY(BLACK) 900 REMOCON 801 OWNER'S MANUAL

804 PACKING SHEET 803 PACKING 803 PACKING

802 BOX CARTON

OPTIONAL PARTS

2-4

SECTION 3 ELECTRICAL
CONTENTS
ELECTRICAL TROUBLESHOOTING GUIDE......................................................................3-2
Power check flow.....................................................................................................................3-2 System operation flow ............................................................................................................3-3 Test & debug flow ....................................................................................................................3-4 KARAOKE Flow (KARAOKE MODEL ONLY) .......................................................................3-10 DETAILS AND WAVEFORMS ON SYSTEM TEST AND DEBUGGING ....................3-11 1. SYSTEM 27MHz CLOCK, RESET, FLASH R/W SIGNAL. ....................................................3-11 2. SDRAM CLOCK ......................................................................................................................3-13 3. TRAY OPEN/CLOSE SIGNAL ................................................................................................3-13 4. SLED CONTROL RELATED SIGNAL(NO DISC CONDITION) .............................................3-14 5. LENS CONTROL RELATED SIGNAL(NO DISC CONDITION) .............................................3-14 6. LASER POWER CONTROL RELATED SIGNAL(NO DISC CONDITION) ............................3-15 7. DISC TYPE JUDGEMENT WAVEFORM ................................................................................3-15 8. FOCUS ON WAVEFORM........................................................................................................3-17 9. SPINDLE CONTROL WAVEFORM(NO DISC CONDITION ...................................................3-18 10. TRACKING CONTROL RELATED SIGNAL(System checking).........................................3-19 11. MT1389 AUDIO OPTICAL AND COAXIAL OUTPUT (SPDIF).............................................3-20 12. MT1389 VIDEO OUTPUT WAVEFORM................................................................................3-20 13. MT1389 AUDIO OUTPUT TO AUDIO DAC..........................................................................3-21 14. AUDIO OUTPUT FROM AUDIO DAC ..................................................................................3-22 BLOCK DIAGRAMS ..................................................................................................................3-23 1. Overall Block Diagram ..........................................................................................................3-23 2. Power(SMPS) Block Diagram ...............................................................................................3-24 3. SERVO Block Diagram ..........................................................................................................3-25 4. MPEG & MEMORY Block Diagram .......................................................................................3-26 5. VIDEO & AUDIO Block Diagram ...........................................................................................3-27 6. KARAOKE Block Diagram(KARAOKE MODEL ONLY) .......................................................3-28 CIRCUIT DIAGRAMS ................................................................................................................3-29 1. Power(SMPS) Circuit DIAGRAM...........................................................................................3-29 2. AV/JACK Circuit DIAGRAM...................................................................................................3-31 3. SYSTEM Circuit DIAGRAM ...................................................................................................3-33 4. DRIVER Circuit DIAGRAM.....................................................................................................3-35 5. TIMER Circuit DIAGRAM .......................................................................................................3-37 6. 5.1CH & KARAOKE(KARAOKE MODEL ONLY) Circuit DIAGRAM ...................................3-39 7. SCART Circuit DIAGRAM .....................................................................................................3-41 · CIRCUIT VOLTAGE CHART ....................................................................................................3-43 PRINTED CIRCUIT DIAGRAMS ............................................................................................3-45 1. MAIN P.C.BOARD ...................................................................................................................3-45 2. KEY P.C.BOARD.....................................................................................................................3-47 3. TIMER P.C.BOARD .................................................................................................................3-48 4. SMPS P.C.BOARD ..................................................................................................................3-49 5. KARAOKE P.C.BOARD ..........................................................................................................3-50
3-1

1. 2. 3. 4.

ELECTRICAL TROUBLESHOOTING GUIDE
1. Power check flow

No 3.3VA
YES

No REG 5.0V
YES

Is the FR101 Normal?
YES

NO

Replace the FR101 (Use the same ICW)

Is the Vcc(=5.6V) supplied to Q126 Collector?
YES

NO

Check or Replace the D123

NO Is the D105/ D106/ D107/ D108 Normal?
YES

Replace the D105/ D106/ D107 /D108

Is the Vcc(=12V) sup- NO plied to Q126 Base?
YES

Check the `PWR CTL "H"' signal from µ-com

Is the Vcc (about 8.7V) NO supplied to IC101 Pin2?
YES

Check or Replace the IC101

Check or Replace the Q126

Is the D121 normal?
YES

NO

Replace the D121 No 12V
YES

Is there about 2.5V NO at the IC103 Pin1?
YES

Replace the IC103

Is the Vcc(=14V) supplied to Q123 Collector?
YES

NO

Check or Replace the D125

Is the D123 normal?
YES

NO

Replace the D123

Is the Vcc(=12V) sup- NO plied to Q126 Base?
YES

Check the `PWR CTL "H"' signal from µ-com

Is the D125 Normal?
YES

NO

Replace the D125

Check or Replace the Q123

Power Line of Main PCB(DVD) is short

3-2

2. System operation flow

Power On

1. 8032 initializes SERVO,DSP & RISC registers 2. Write RISC code to SDRAM 3. Reset RISC

Show LOGO

YES

Tray Closed ?
NO

Tray Close to Closed position

SLED at Inner Side ?
NO

YES

SLED Moves to Inner Position

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

Recieve OPEN/CLOSE Key?
NO

YES

1. Execute Pressed Key & IR Key 2. System operation Routine Loop

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

YES

Receive CLOSE Key?

YES

3-3

3. Test & debug flow

TEST

Check the AC Voltage Power PCBA(110V or 220V) YES

NO

Replace power PCBA or AC transformer.

Switch on the Power PCBA YES Is the DC Voltage outputs OK? (5V, 3.3V, 12V,5.6V MOTOR) 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? YES Connect to PC RS232 Cable and update the FLASH memory code. YES NO 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 NO

Repair or Replace Power PCBA

Check the regulators or related diodes.

Update FLASH successfully? YES

A

3-4

A

Show LOGO?

NO

Flash Memory operates properly?

NO

Check connection lines between FLASH & MT1389C and the FLASH access time whether is suitable or not.

YES

YES NO
Check connection lines between SDRAM & MT1389C and the SDRAM is damaged.

SDRAM works properly?

YES
MT1389C VIDEO outputs properly?

NO

Check the related circuit of MT1389C.

YES NO
Check the filtering and amp circuit of TV signal.

Have TV signal output?

YES
Check AV cable connection to TV set.

Does Tray move inside when it is not at closed position?

NO

Normal TROUT &TRIN signals?

NO

Check the load OPEN & CLOSE switch

YES

YES
Normal TRCLOSE & TROPEN signal?

NO

Check the Tray control IO pins on MT1389C & IP9005.

YES
Normal LOAD+ & LOADsignal?

NO

Check the Tray control amplifying circuit on Motor driver.

YES
Check the cable connection between main PCBA and loader.

B

3-5

B

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

NO

Motor Driver STBY Pin is High?

NO

Check the connection line of STBY signal.

YES

YES
Is FMSO DC Level higher than 1.4V?

NO

Check the related circuit of FMSO.

YES
SL+ and SL- output properly?

NO

Check the amp circuit on motor driver.

YES
Do not put in disc and tray close. Check the cable connection with MECHA.

Optical Lens has movements for searching Focus?

NO

Proper FOSO outputs to motor driver?

NO

Check FOSO connection on MT1389C and motor dirver.

YES

YES NO
Check the amp circuit on motor dirver.

Proper F+ & F- outputs?

YES
Check cable connect on with pick-up head.

C

3-6

C

Laser turns on when reading disc?

NO

LD01 or LD02 output properly?

NO

Check the laser power circuit on MT1389C and connecting to power transistor.

YES

YES
Collector voltage of power transistor is OK?

NO

Check the related circuit on laser power transistor

YES
Check cable connection between transistor ouput and pick-up head.

Put disc in?

NO

Laser off

YES NO
Proper RFL signal on MT1389C?

Disc ID is correct?

NO

Check the related circuit on MT1389C RFL signal.

YES

YES

Check LDO1 & LDO2 signal

Does spindle rotate?

NO

Proper DMSO signal on MT1389C

NO

Check DMSO related circuit on MT1389C.

YES

YES NO
Check the spindle control amp circuit of motor driver.

SP+ & SP- output properly?

YES
Check the cable connection between spindle and main PCBA.

D

3-7

D

Focus ON OK?

NO

Proper signals on A, B, C, D of MT1389C

NO

Check connections between MT1389C and pick-up head.

YES

YES
Check FEO signal on MT1389C

NO

Check the FOSO connection on MT1389C and motor driver.

YES
Check FOSO signal on MT1389C

Track On OK?

NO

Normal TEO Signal on MT1389C?

NO

Check the related circuit on MT1389C

YES

YES
Properly TRSO signal on MT1389C?

NO

Check the TRSO connection on MT1389C and motor dirver.

YES NO
Check the tracking control amp circuit on motor driver.

T+ & T- output properly?

YES
Check cable connection on pick-up head.

Disc is play ?

NO

Check RFO & RFLVL signal waveform.

YES

E

3-8

E

Normal Audio output when disc playback?

NO

Audio DAC received correct data stream?

NO

Check connection between MT1389C & Audio DAC.

YES

YES NO
Check the related circuit of Audio DAC.

Normal Audio DAC out?

YES
Check Audio filter,amplify,mute circuit.

Normal IR.VFD & Front pannel key functions?

NO

Communications between IR.VFD Front pannel key & MT1389C is normally?

NO

Check communication lines on MT1389C.

YES

YES
Check the cable connection on Front pannel.

TEST END

3-9

4. KARAOKE Flow (KARAOKE MODEL ONLY)

Start

Insert the Mic jack

Is the Mic signal at the IC801 pin3. YES

NO

Is the Mic signal at the IC801 Pin 2. NO

YES

NO Replace the IC508.

Is the Digital signal output at the IC508 Pin1. YES

Replace IC801.

Is the Mic signal at the IC801 Pins3, 7 normal?

NO Replace the mic jack

NO Check pattern.

Does the Mic signal input the IC501 Pin224. YES Replace the VR801.

Replace IC501.

3-10

DETAILS AND WAVEFORMS ON SYSTEM TEST AND DEBUGGING
1. SYSTEM 27MHz CLOCK,RESET,FLASH R/W SIGNAL. 1) MT1389C main clock is at 27MHz(X501)

1.0V, 27MHz

FIG 1-1

2) MT1389 reset is low active.

3.3VA

PWR_CTL RESET

Reset Time

FIG 1-2

3-11

3) RS232 waveform during procedure(Downloading)

TXD

RXD

FIG 1-3

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

PRD

PWR

FIG 1-4

3-12

2. SDRAM CLOCK
DCLK = 128MHz, Vp-p=2.2, Vmax=2.7V

FIG 2-1

3. TRAY OPEN/CLOSE SIGNAL

TRIN TROUT

TRCLOSE

TROPEN

FIG 3-1

3-13

4. SLED CONTROL RELATED SIGNAL (NO DISC CONDITION)

FMSO(1.9V/1.4V/1.1V)

STBY(3.3V)

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

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

FIG 4-1

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

3-14

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

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

MDI1(0V/180mV) LD01(3.3V//2.3V)

LD02(3.3V/2.3V)

FIG 7-2 (DVD)

7. DISC TYPE JUDGEMENT WAVEFORM

F+

FE

RFL

FIG 7-1

3-15

F+

FE

RFL

FIG 7-2 (DVD)

F+

FE

RFL

FIG 7-3 (CD)

3-16

F+

FE

RFL

FIG 7-4 (CD)

8. FOCUS ON WAVEFORM

FE

FOSO F+

F-

FIG 8-1 (DVD)

3-17

FE FOSO F+

F-

FIG 8-2 (CD)

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

3-18

10. TRACKING CONTROL RELATED SIGNAL(System checking)

TE

TRSO

T+

T-

FIG 10-1 (DVD)

TE

TRSO

T+

T-

FIG 10-2 (CD)

3-19

11. MT1389C AUDIO OPTICAL AND COAXIAL OUTPUT (SPDIF)

FIG 12-1

13. MT1389C VIDEO OUTPUT WAVEFORM 1) 100%

TE

TRSO

T+

T-

FIG 13-1

3-20

2) COMPOSITE VIDEO SIGNAL

FIG 13-2

14. MT1389C AUDIO OUTPUT TO AUDIO DAC

ASDATA3

FIG 14-1

3-21

15. AUDIO OUTPUT FROM AUDIO DAC

FIG 15-1

3-22

DISC
VD33D VD33A

SPINDLE MOTOR
CDLD,DVDLD,SVREF21 MD[00:15] ROMAD[0: 19] ROMRD ROMWR ROMDATA[0:7] RS232_RXD

CD_DVD, VR_CD,VR_DVD

1. Overall Block Diagram

BLOCK DIAGRAMS

M

PICK UP

DVD : A,B,C,D,RF0 CD : A,B,C,D,E,F,RF0 CDMDI,DVDMDI

IC502 MX29LV160T 2/4M 16/32BIT FLASH ROM CN503 RS232 Download

IC503 4M 16BIT 4Bank SDRAM

LOADING SLED MOTOR(FEEDING) MOTOR V18A/V33A
IIC/VFD/DAC_SCK IIC/VFD/DAC_TXD OPU_SEL

DECK MECHANISM

M
CD_DVD_CT

M

Pick-up
BCLK LRCLK DACCLK SER3,DAC_ML0

MA[00:11] DMCLK CSJ BA0 BA1 DQM WEJ CASJ RASJ

VD33D

IC512 KS24C02 EEPROM
VD33D/5V
DAC_RST

SLED[+,-]

LOAD[+,-]

SPINDLE[+,-]

FOCUS[+,-] TRACK[+,-]

IC601 CS4344 2DAC
3V3M

XSFGN,XSFGP HOMESW INSW,OUTSW

IC501 MTK MT1389

27MHz

RESET

Din Dout
CLK CS
POWCTL_H

IECDAOUT

YC_MIX

TV_DAC[0:3]

3-23
3.3VA IC505 RESET IC 5V

5V/8V

SER[0:2],DAC_ML1

IC301 CS4360 (6DAC)
RS232_TXD

OPEN,CLOSE,SLEGP,SPINDLE,FOCUS,TRACK,SVREF

RF+ MPEG IC

IC201 IP9005 Motor Dri ve

DRVSB

FL RL CENTER FR RR WOOFER

L/R

DMUTE

5V 12V 3.3V

AC 90V~240V 50HZ/60Hz
3.3VA

POWER BOARD
3
5V MOTOR

IC901 LED DRIVER

Power On

5V IC604 MM1623XFBE VIDEO BUFFER
CVBS

+12V IC302~4 UTC4580 OP-AMP

+12V IC602 UTC4580 OP-AMP

IR
DIG901 LED Cloc k KEY Input
Power Key RC901 R/C

R/Pr G/Y B/Pb Y C

COAXIAL

SPDIF

FL RL CENTER FR RR WOOFER

L/R

RECTIFIER(14V) LPF 12V

2. Power(SMPS) Block Diagram

RECTIFIER(5.6V) LPF
T/ W WITH 1389D

5V

TRANS

FILTER

5.6V(M) / 5.6VA
WITH 1389C

SWITCHING IC

3-24

RECTIFIER(9.5V)

REG.

RECTIFIER
RECTIFIER(3.4V) LPF FEED B.

8V

3.4VA 3.2V PWR CTL

AC100~240V

X501
27MHz X-TAL

ALPC
AD[0:7]

LD0 1, LDO 2, IOA MDI 1
A[0:20]

3. SERVO Block Diagram

FLASH ROM
PRD#, PWR# PCE#

PICK UP
V20, PICKSEL DVD: A,B,C,D, RFO CD: A,B,C,D, E, F,RFO

IC501 MT1389C DVDPLAYER ONE CHIP

SCL, SDA

EEP ROM

RXD, TXD

RS232C(MTK)

DQ[0:15]

3-25
LIMIT,TRIN,TROUT
MA[0:11] DQM0 ,DQM1 WE#,CAS#,RAS# CS#,BA0,BA1 SDCLK SDCKE

F+, F-, T+, TADIN

M/D
SL+, SLLOAD+, LOAD-

SP+, SP-

IC201 IP9005 Motor Driver

IC503 4M x 16bit SDRAM

FOSO,TRSO,FMSO DMSO,,TROPEN TRCLOSE STBY,V1P4

KARAOKE BOARD
SCL,SDA

IC509 OP Amp IC506 EEPROM

IC508 A/D Con. (Karaoke)
ACLK,ABCK ALRCK AMDAT DQM0,DQM1 DQ[0:15] DCLK,WE,CAS,RAS CS,DCKE,MA[0:10]

IC503 SDRAM 64M

Y2(Y),Y3(Color) Y4(Y),Y5(Cb),Y6(Cr) ASPECT(16:9) RESET

4. MPEG & MEMORY Block Diagram

VIDEO Interface

IC505 RESET IC

PWR,PCE,PRD

A[0:20]

DIN DOUT

X501 27MHz

LED DRIVE IC

IC502 FLASH MEMORY (16 M )

AD[0:7]

3-26

IC501 (MPEG + DSP + RF) MT1389
ACLK,ALRCK,ABCK MUTE,VSCK,VSDA ASDTA[0:3] ASTB,SCL,SDA ASPDIF

AUDIO Interface

CVBS

(R.G.B) / (Y.Pb.Pr ) IC604 VIDEO 6dB Amp
COMPONENT (R.G.B) / (Y.Pb.Pr ) SUPER VIDEO (Y/C)

MPEG

(Y/C)

A/V JACK
AUDIO 'L' AUDIO 'R'

DAC RESET

MPEG

ACLK

IC602 (OP Amp) LPF&Buffer

SCL

IC601 AUDIO DAC (2CH)

5. VIDEO & AUDIO Block Diagram

SDA

ADATA3

3-27

5.1CH BOARD
FRONT 'R' REAR 'R'

DAC RESET

IC302 (OP Amp) LPF&Buffer IC301 AUDIO DAC (5.1CH)

ACLK

SCL

MPEG

SDA

FRONT 'L'

ADATA1

IC303 (OP Amp) LPF&Buffer

REAR 'L'

ADATA2 CENTER

ADATA3

IC304 (OP Amp) LPF&Buffer

WOOFER

6. KARAOKE Block Diagram(KARAOKE MODEL ONLY)

Microphone1

Microphone Signal PREAMP (BA3308)

AMP (KA741)

AUDIO ADC (CS5331)

MPEG (MT1389C)

AUDIO DAC (CS4344)

(Block Digram)

1 The unit turns to KARAOKE MODE with ou-screen lyrics display and melody sound when it play backs VCD or DVD KARAOKE DISC. 2. IF a microphone is connected at this time, MICON recoguizes the connection and prepares the composition of external voice and internal melody. 3. The week signal of the microphone is converted to the digital signal after voice output that has passed through PREAMP(BA3308) and AMP(KA741) passes through(CS5331) that is Audio ADC(Analog to Digital convertor). 4. This digital signal enters NT1389C that is MPEG IC 5. This mixed signal is output to AV JACK after passing through AUDIO DAC(CS4344).

3-28

CIRCUIT DIAGRAMS
1. POWER(SMPS) CIRCUIT DIAGRAM

IMPORTANT SAFETY NOTICE WHEN SERVICING THIS CHASSIS, UNDER NO CIRCUMSTANCES SHOULD THE ORIGINAL DESIGN BE MODIFIED OR ALTERED WITHOUT PERMISSION FROM THE LG ELECTRONICS CORPORATION. ALL COMPONENTS SHOULD BE REPLACED ONLY WITH TYPES IDENTICAL TO THOSE IN THE ORIGINAL CIR-

CUIT. SPECIAL COMPONENTS ARE SHADED ON THE NOTE : SCHEMATIC FOR EASY IDENTIFICATION. 1. Shaded( ) parts are critical for safety. Replace only THIS CIRCUIT DIAGRAM MAY OCCASIONALLY DIFwith specified part number. FER FROM THE ACTUAL CIRCUIT USED. THIS WAY, 2. Voltages are DC-measured with a digital voltmeter IMPLEMENTATION OF THE LATEST SAFETY AND during Play mode. PERFORMANCE IMPROVEMENT CHANGES INTO THE SET IS NOT DELAYED UNTIL THE NEW SERVICE LITERATURE IS PRINTED.

No Power D105~D108 is Defective 14VA No Power D125 is Defective 12V No Power Q123 is Defective

5.0V No Power Q126 is Defective

5.6VA No Power D123 is Defective Switching Error IC101is Defective

5.6V No Power Q125 is Defective

No Power FR101 is Defective

3.3VA No Power D121 or D122 are Defective

3.3V No Power Q121 is Defective

Switching Error IC102,IC103 are Defective

A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

P

Q

R

S

T

3-29

3-30

2. AV/JACK CIRCUIT DIAGRAM

A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

P

Q

R

S

T

3-31

3-32

3. SYSTEM CIRCUIT DIAGRAM

A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

P

Q

R

S

T

3-33

3-34

4. DRIVER CIRCUIT DIAGRAM

CD/DVD LD will not on

A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

P

Q

R

S

T

3-35

3-36

5. TIMER CIRCUIT DIAGRAM

A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

P

Q

R

S

T

3-37

3-38

6. 5.1CH(OPIONAL PART) & KARAOKE(KARAOKE MODEL ONLY) CIRCUIT DIAGRAM

A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

P

Q

R

S

T

3-39

3-40

7. SCART CIRCUIT DIAGRAM

A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

P

Q

R

S

T

3-41

3-42

· CIRCUIT VOLTAGE CHART
MODE PIN NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 STOP PLAY MODE PIN NO. 26 27 28 29 30 31 32 33 34 35 36 37 38 38 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 0 0 1.73 1.73 1.73 1.73 1.74 2.21 2.18 0 2.14 1 1 1 1 0 1 2.05 0 0 0 0 0 3.3 1 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 STOP 2.34 0 2.8 2 1.4 1.52 1.38 1.38 2.62 2.62 2.25 2.2 1.37 0 1.4 1.43 1.4 0 0 0 3.3 2.64 3.32 0.01 3.3 0 1.76 2.13 2.14 2.13 1.81 2.12 1.83 0 0 0 0 0 0 3.3 3.3 1.29 2.36 0 0.56 0 1.27 3.3 2.23 1.39 0 0 2.06 0 3.3 PLAY 0 0 2.8 0 0 0 0 0 0 2.73 0 2.11 1.36 0 0 0 141 0 0 0 3.3 0 0 0 0 0 1.8 0 2.12 1.74 1.34 0 1.52 1.63 2.99 0 0 2.05 0 3.3 3.32 0 0.32 0.37 0.46 3.2 1.42 3.3 1.93 0 0 0 0 0 3.3 MODE PIN NO. 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 STOP 1.2 0 1.17 0.64 0 1.44 1.65 1.4 0 1.21 1.02 0 2.06 0 3 3.28 1.8 3 3 2.97 0 3.33 3.33 3 5.18 3.32 2.76 3.3 0 5.2 2.67 3.14 2.28 0 1.06 0 1.04 1.28 0 1.18 1.36 1.8 1.26 1.23 1.28 0 3.3 2.35 1.8 0 1.39 1.37 1.31 0 1.33 PLAY 1.07 0.82 0.77 0.54 0 0.53 1.77 1.53 0 1.2 1.03 0 1.93 0 2.74 3.25 1.8 2.7 2.7 2.67 2.68 3.32 3.32 2.7 5.18 3.31 2.75 3.3 0 5.2 2.92 3.18 1.6 0 0.85 0 1.09 0.94 0 1.65 1.7 1.75 1.51 1.4 1.16 0.86 3.3 1.28 1.05 1.1 1.25 1.27 1.3 0 1.37 MODE PIN NO. 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 STOP 3.3 2.63 3.27 3 3.2 3.3 2.9 1.59 0 1.38 0.07 0.31 0 1.51 1.49 1.49 1.8 0 0 3.3 1.72 0.92 0 0 0 0 1.56 0 2.36 2.32 1.49 3.3 3.25 3.3 0 0 0 1.8 3.33 0 2.73 0 3.32 2.75 0 0 3.3 0 0 0 0 0 0 3.3 1.24 PLAY 3.3 1.65 3.1 2.63 3.1 3.3 2.38 1.7 0 1.55 0 0.78 0 1.95 1.93 1.62 1.75 0 0 3.3 1.72 2.29 0 0 0 0 1.4 0 1.54 1.61 1.61 3.3 3.24 3.27 0 0 0 1.8 3.3 0 2.73 0 3.32 0 0 0 3.3 0 0 0 0 0 0 3.3 1.24 MODE PIN NO. 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 STOP 1.25 2.26 0 0.46 3.3 0.7 0 3.28 3.3 0.42 0 0.57 0 3.3 0.25 2.72 2.71 0 0 0 0.1 3.3 1.31 1.67 1.58 0 0 0 0 0 1.76 0 0 0 1.66 0 1.8 3.3 3.3 0.85 0.81 0 0.83 3.19 1.74 1.71 1.71 1.72 3.19 0 0 0 0 3.19 1.55 PLAY 1.24 2.25 0 0.47 3.3 0.7 0 3.29 3.3 0.43 0 0.38 0.42 3.3 2.62 2.64 2.63 0 0 0 3.3 3.3 1.66 1.64 1.57 0 1.24 1.1 0 0 1.76 1.24 0 0 1.65 0 1.76 3.3 3.3 0.86 0.82 0 0.89 3.18 1.72 1.71 1.71 1.75 3.18 0 0 0 0 3.19 1.55 MODE PIN NO. 246 247 248 249 250 251 252 253 254 255 256 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 32 33 34 35 36 37 38 39 40 41 42 43 44 STOP 1.39 1.45 1.93 0 0 0 1.75 1.71 1.37 0.94 3.3 3.2 0 3.2 3.2 3.2 3.2 0 0 0 0 3.2 5.25 0 1.54 1.33 3.2 3.2 3.2 1.7 2.2 0 0 0 0 0 0 0 3.2 3.2 0 0 0 0 3.2 0 3.2 3.26 3.2 0 3.2 0 0 0 PLAY 1.39 1.44 1.94 0 0 0 1.75 1.71 1.37 0.94 3.3 3.17 3.17 3.17 0.97 3.16 3.16 3.16 3.16 3.16 1.02 3.16 5.25 2.73 3.19 1.71 2.43 3.17 3.16 3.17 3.17 3.17 3.17 0 0 0 0 0 3.17 3.17 0 0 0 0 0 0 3.23 0 3.17 0 3.17 0 3.17 0 MODE PIN NO. 45 46 47 48 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 STOP 0 0 0 3.2 3.25 2.85 3.25 2.87 2.85 0 2.81 2.9 3.25 2.85 2.87 1.9 2.8 3.25 0 3.18 3.07 3.14 2.95 2.9 2.6 2.81 0.05 0.16 0.16 0.16 3.26 0 0.16 0.15 0.16 0.12 0.05 0.05 0.04 2.85 3.26 1.79 0 2.7 2.7 2.9 3.26 2.92 2.92 0 2.92 2.94 3.26 2.91 3.22 0 3.1 2.58 0.61 2.97 2.96 0.32 2.83 0.06 0.18 0.18 0.17 3.24 0.59 0.17 0.53 0.53 0.5 0.16 0.17 0.5 0.08 3.236 1.78 0 0.1 0 2 3.23 1.95 2.01 0 2.03 2.17 3.23 2 1 2 3 4 5 6 7 8 9 10 PLAY 0 0 0 3.17 3.23 2.86 3.22 2.87 2.5 0 2.1 2.04 3.22 2.1 2.91 0 MODE PIN NO. 51 52 53 54 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 STOP 2.94 0 2.9 0 PLAY 2 0 1.85 0 1.23 1.64 1.65 1.63 2.382 4.69 2.39 0 1.91 1.72 5.16 2.47 5.16 1.27 0 1.55 0 2.51 0 1.53 0 2.47 5.16 2.47 0 2.52 0 2.51 0 2 2.05 0 1.96 0.42 0.42 2.51 0.8 5.16 2.15 4.8 4.8 4.81 4.2 0.01 0.01 0.01 4.8 4.75 Emitter Collector Base Emitter Collector Base Emitter Collector Base Emitter Collector Base Emitter Collector Base Emitter Collector Base Emitter Collector Base Emitter Collector Base MODE PIN NO. 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 STOP 1.81 1.96 0 2.1 2.32 2.35 2.1 0.9 1.58 1.25 0.94 0.95 1.5 1.59 4.84 0 1.44 2.04 0 1.36 1.32 0 Q201 Q201 0 0 0.68 Q202 Q202 0 0 0 Q203 Q203 0 0 5.04 Q204 Q204 5.14 0 5.08 Q205 Q205 5.14 0.5 5.08 Q501 Q501 0 0 0.83 Q600 Q600 5.17 0 5.11 Q604 Q604 0 0 0.75 0 0 0.16 0 0 0.74 0 0 0.83 5.1 0 5.05 4.34 2.42 3.64 0 0.19 0 0 0 5.04 0 5.09 0 PLAY 2.7 2.39 0 2.56 2.13 2.16 1.96 0.93 1.58 2.21 0.92 0.92 1.62 1.79 4.82 0 1.6 1.76 0 1.54 1.5 0 Emitter Collector Base MODE PIN NO. Q603 Emitter Collector Base STOP PLAY

IC201(9005)
0 0 5.01 5.52 1.8 1.42 5.52 5.52 0 0 2.65 2.61 1.2 4.08 2.66 2.66 2.68 2.63 0 5.53 3.29 1.43 1.43 1.43 1.42 1.43 1.43 1.43 0 0 5.04 5.55 1.76 1.42 5.55 5.54 0 0 2.69 2.63 1.46 3.85 2.69 2.68 2.71 2.66 0 5.56 3.29 1.43 1.43 1.43 1.43 1.43 1.43 1.43

Q603
0 0 0.75 0 0 0 Q605 0 0 0.74

IC503 (M12L64164A)

IC601
0 1.65 1.65 1.64 2.37 4.7 2.4 0 4.79 2.38 5.17 2.52 5.17 1.36 0 1.68 0 2.52 0 1.68 0 2.49 5.17 2.5 0 2.53 0 2.51 0 2.18 2.16 0 2.16 0.25 0.23 2.51 0.53 5.17

Q605
0 0.13 0

IC502 (MX29LV160-70)

IC604(MM1623)

IC501
0 1.73 1.73 1.73 1.73 1.75 2.15 2.2 2.18 2.16 2.14 1.74 1.04 1.03 0.12 0.13 0.12 0.13 2.05 2.05 2.05 2.38 3.29 3.3 0.21

IC901
2.16 4.83 4.83 4.83 3.84 0 0 0 4.84 2.3

3-43

3-44

PRINTED CIRCUIT DIAGRAMS
1. MAIN P.C.BOARD

LOCATION GUIDE

3-45

3-46

2. KEY P.C.BOARD
( 7 TOOL ONLY )

3. TIMER P.C.BOARD
( 7 TOOL ONLY ) ( TOP VIEW ) (BOTTOM VIEW )

(Solder Side) (Solder Side) (Solder Side)

( 8 TOOL ONLY )

( 8 TOOL ONLY )

( TOP VIEW )
LOCATION GUIDE

(BOTTOM VIEW )

(Solder Side)

(Solder Side) (Solder Side)

( 9 TOOL ONLY )

( 9 TOOL ONLY )

( TOP VIEW )

(BOTTOM VIEW )

(Solder Side) (Solder Side) (Solder Side)

3-47

3-48

4. SMPS P.C.BOARD
LOCATION GUIDE

6. KARAOKE P.C.BOARD
( 7 TOOL ONLY )
LOCATION GUIDE

( 8 TOOL ONLY )
LOCATION GUIDE

(Solder Side) ( 9 TOOL ONLY )
LOCATION GUIDE

5. 5.1CH & VGA P.C.BOARD(OPTIONAL PART)
LOCATION GUIDE

(Solder Side)

3-49

3-50