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CONTENTS
SECTION 1 . . . .SUMMARY SECTION 2 . . . .CABINET & MAIN CHASSIS SECTION 3 . . . .ELECTRICAL SECTION 4 . . . .MECHANISM SECTION 5 . . . .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: AUDIO OUT: DIGITAL OUT (COAXIAL): · System Laser: Signal system: Frequency response: 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 90 dB (DVD/CD) 1 Vp-p 75 , sync negative, RCA jack x 1/ SCART (TO TV) 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 12W 430 x 39 x 242 mm (W x H x D) without foot 2.2 kg 5 °C to 35 °C (41 °F to 95 °F) 5 % to 90 %
Signal-to-noise ratio: Harmonic distortion: Dynamic range: · Accessories
Video cable (1), Audio cable (1), Remote control (1), Batteries (2)
1-5
SECTION 2 CABINET & MAIN CHASSIS
CONTENTS
1. EXPLODED VIEWS ................................................................................................................2-2
1. Cabinet and Main Frame Section ...........................................................................................2-2 2. Packing Accessory Section ....................................................................................................2-3
2-1
EXPLODED VIEWS
1. Cabinet and Main Frame Section 5
463 250
A44 320 465 300
4
463
467
A46
463
SCART, 5.1CH MODEL ONLY
A00
A48
260 261 452 A42 452
3
463
261
463
261
A41
2
283
261
KARAOKE MODEL ONLY
279
A47
1
A
B
2-2
C
280
A49
A43
D
2. 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
2-3
SECTION 3 ELECTRICAL
CONTENTS
ELECTRICAL TROUBLESHOOTING GUIDE......................................................................3-2
1. Power check flow.....................................................................................................................3-2 2. System operation flow ............................................................................................................3-3 3. Test & debug flow ....................................................................................................................3-4 DETAILS AND WAVEFORMS ON SYSTEM TEST AND DEBUGGING ....................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. MT1389 AUDIO OPTICAL AND COAXIAL OUTPUT (SPDIF).............................................3-19 12. MT1389 VIDEO OUTPUT WAVEFORM................................................................................3-19 13. MT1389 AUDIO OUTPUT TO AUDIO DAC..........................................................................3-20 14. AUDIO OUTPUT FROM AUDIO DAC ..................................................................................3-21 BLOCK DIAGRAMS ..................................................................................................................3-22 1. Overall Block Diagram ..........................................................................................................3-22 2. Power(SMPS) Block Diagram ...............................................................................................3-23 3. SERVO Block Diagram ..........................................................................................................3-24 4. MPEG & MEMORY Block Diagram .......................................................................................3-25 5. VIDEO & AUDIO Block Diagram ...........................................................................................3-26 CIRCUIT DIAGRAMS ................................................................................................................3-27 1. Power(SMPS) Circuit DIAGRAM...........................................................................................3-27 2. AV/JACK, 5.1CH Circuit DIAGRAM ......................................................................................3-29 3. SYSTEM Circuit DIAGRAM ...................................................................................................3-31 4. DRIVER Circuit DIAGRAM.....................................................................................................3-33 5. 5.1CH, SCART Circuit DIAGRAM .........................................................................................3-35 6. KARAOKE Circuit DIAGRAM(KARAOKE MODEL ONLY) ..................................................3-37 · CIRCUIT VOLTAGE CHART ....................................................................................................3-39 PRINTED CIRCUIT DIAGRAMS ............................................................................................3-41 1. MAIN P.C.BOARD ...................................................................................................................3-41 2. KEY P.C.BOARD.....................................................................................................................3-43 3. TIMER P.C.BOARD .................................................................................................................3-44 4. SCART & 5.1CH P.C.BOARD(OPTIONAL PART) .................................................................3-45 5. SMPS P.C.BOARD ..................................................................................................................3-46
3-1
ELECTRICAL TROUBLESHOOTING GUIDE
1. Power check flow
A. No VF+ B. No 5V_A
Is 5.2VA section working?
YES
NO
NO
Is 5.2VA section working?
YES
Check F102
YES
No 5.2VA
NO
Is 5.2V present at emitter of Q107?
YES
Replace D102.
Check F101
Replace Q107.
YES
Is there a DC voltage at R101?
NO
NO
Replace R101.
YES
Is there a DC voltage At (+) terminal of BD101?
YES
NO
Replace BD101.
Replace IC101.
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
Tray Closed? YES NO Tray Close to Closed position
SLED at Inner Side ? NO SLED Moves to Inner Positi on YES
1. Judge whether have disc and disc type 2. Jump to related disc reading procedure
Reci eve OPEN/CLOSE Key? NO 1. Execute Pressed Key & IR Key 2. System operation Routine Loop YES
YES
1. Stop Playback & Open Tray 2. Display tray open message & LOGO NO Receive CLOSE Key?
3-3
3. Test & debug flow
TEST
Check the AC Voltage Power PCBA(110V or 220V)
NO
Replace power PCBA or AC transformer.
YES
Switch on the Power PCBA
Is the DC Voltage outputs OK? (5V,1.8V,3.3V,8V,12V)
NO
Repair or Replace Power PCBA
YES
Make sure the main PCBA don't short on VCCs and switch it on.
Is 3.3V and 1.8V DC outputs normal on main PCBA?
NO
Check the regulators or related diodes.
YES
Connect to PC RS232 Cable and update the FLASH memory code.
1. Check 27MHz system clock. Update FLASH successfully? NO 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
A
3-4
A
RESET or Power On.
Show LOGO?
NO
Flash Memory operates properly? YES
NO
Check connection lines between FLASH & MT1389 and the FLASH access time whether is suitable or not.
YES
SDRAM works properly?
NO
Check connection lines between SDRAM & MT1389 and the SDRAM is damaged.
YES
MT1389 VIDEO outputs properly? YES
NO
Check the related circuit of MT1389.
Have TV signal output?
NO
Check the filtering and amp circuit of TV signal.
YES
Check AV cable connection to TV set.
Does Tray move inside when it is not at closed position? YES
NO
Normal TROUT & TRIN signals? YES
NO
Check the load OPEN & CLOSE switch
Normal TRCLOSE & TROPEN signal? YES
NO
Check the Tray control IO pins on MT1389 & IP4504.
Normal LOAD+ & LOADsignal?
NO
Check the Tray control amplifying circuit on Motor driver.
YES
B
Check the cable connection between main PCBA and loader.
3-5
B
Does the SLED move to inner side when it is at outter position? YES
NO
Motor Driver STBY Pin is High?
NO
Check the connection line of STBY signal.
YES
Is FMSO DC Level higher than 1.4V? YES
NO
Check the related circuit of FMSO.
SL+ and SL- output properly? YES
NO
Check the amp circuit on motor driver.
Do not put in disc and tray close.
Check the cable connection with MECHA.
Optical Lens has movements for searching Focus? YES
NO
Proper FOSO outputs to motor driver? YES
NO
Check FOSO connection on MT1389 and motor dirver.
Proper F+ & F- outputs?
NO
Check the amp circuit on motor dirver.
YES
C
Check cable connect on with pick-up head.
3-6
C
Laser turns on when reading disc?
NO
LD01 or LD02 output properly? YES
NO
Check the laser power circuit on MT1336 and connecting to power transistor.
YES
Collector voltage of power transistor is OK? YES
NO
Check the related circuit on laser power transistor
Check cable connection between transistor ouput and pick-up head.
Put disc in?
NO
Laser off
YES
NO Disc ID is correct?
Proper RFL signal on MT1389?
NO
Check the related circuit on MT1389 RFL signal.
YES YES
Check LDO1 & LDO2 signal
Does spindle rotate?
NO
Proper DMSO signal on MT1389 YES
NO
Check DMSO related circuit on MT1389.
SP+ & SP- output properly?
NO
Check the spindle control amp circuit of motor driver.
YES
YES Check the cable connection between spindle and main PCBA.
D
3-7
D YE S
Focus ON OK?
NO
Proper signals on A,B,C,D of MT1389 YES
NO
Check connections between MT1389 and pick-up head.
YES
Check FEO signal on MT1389 YES
NO
Check the FOSO connection on MT1389 and motor driver.
Check FOSO signal on MT1389
Track On OK?
NO
Normal TEO Signal on MT1389? YES
NO
Check the related circuit on MT1389
YES
Properly TRSO signal on MT1389? YES
NO
Check the TRSO connection on MT1389 and motor dirver.
T+ & T- output properly?
NO
Check the tracking control amp circuit on motor driver.
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? YES
NO
Check connection between MT1379 & Audio DAC.
YES
Normal Audio DAC out? YES
NO
Check the related circuit of Audio DAC.
Check Audio filter,amplify,mute circuit.
Normal IR.VFD & Front pannel key functions?
NO
Communications between NO IR.VFD Front pannel ey &MT1389 k is n orma lly?
Check communication lines on MT1389.
YES
YES
TEST END
Check the cable connection on Front pannel.
3-9
DETAILS AND WAVEFORMS ON SYSTEM TEST AND DEBUGGING
1. SYSTEM 27MHz CLOCK, RESET, FLASH R/W SIGNAL. 1) MT1389 main clock is at 27MHz(X501)
FIG 1-1
2) MT1389 reset is low active.
FIG 1-2
3-10
3) RS232 waveform during procedure(Downloading)
FIG 1-3
4) Flash R/W enable signal during download(Downloading)
FIG 1-4
3-11
2. SDRAM CLOCK
FIG 2-1
3. TRAY OPEN/CLOSE SIGNAL
FIG 3-1
3-12
4. SLED CONTROL RELATED SIGNAL (NO DISC CONDITION)
FIG 4-1
5. LENS CONTROL RELATED SIGNAL(NO DISC CONDITION)
FIG 5-1
3-13
6. LASER POWER CONTROL RELATED SIGNAL (NO DISC CONDITION)
FIG 6-1
7. DISC TYPE JUDGEMENT WAVEFORM
FIG 7-1
3-14
FIG 7-2 (DVD)
FIG 7-3 (CD)
3-15
FIG 7-4 (CD)
8. FOCUS ON WAVEFORM
FIG 8-1 (DVD)
3-16
FIG 8-2 (CD)
9. SPINDLE CONTROL WAVEFORM (NO DISC CONDITION)
FIG 9-1
3-17
10. TRACKING CONTROL RELATED SIGNAL(System checking)
FIG 10-1 (DVD)
FIG 10-2 (CD)
3-18
11. MT1389 AUDIO OPTICAL AND COAXIAL OUTPUT (SPDIF)
FIG 11-1 (DVD)
12. MT1389 VIDEO OUTPUT WAVEFORM 1) 100%
FIG 12-1
3-19
2) COMPOSITE VIDEO SIGNAL
FIG 12-2
13. MT1389 AUDIO OUTPUT TO AUDIO DAC
ASDATA3
FIG 13-1
3-20
14. AUDIO OUTPUT FROM AUDIO DAC
FIG 14-1
3-21
DISC
VD33D
VD33D
SPINDLE MOTOR
CDLD,DVDLD,SVREF21 MD[00:15] RS232_RXD ROMAD[0: 19] ROMRD ROMWR ROMDATA[0:7]
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 VD18/VD33
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
IC506 KS24C02 EEPROM
VD33D/5V
DAC_RST
SLED[+,-]
LOAD[+,-]
SPINDLE[+,-]
FOCUS[+,-] TRACK[+,-]
IC601 CS4391 2DAC
3V3M
XSFGN,XSFGP HOMESW INSW,OUTSW
IC501 MTK MT1389
27MHz
IECDAOUT
M-RESET
VFD_RXD S_REQ
YC_MIX
VF-
TV_DAC[0:3]
3-22
M_REQ PWRCTL VF+
5V/8V
SER[0:2],DAC_ML1
IC301 CS4360 (6DAC)
RS232_TXD
OPEN,CLOSE,SLEGP,SPINDLE,FOCUS,TRACK,SVREF
RF+ MPEG IC
5.2VA IC507 74HCT244
VIDEO_SW D2_T[1:3] SCART_16:9 RGB_SEL
IC201 IP4504 Motor Drive
DRVSB
FL RL CENTER FR RR WOOFER
L/R
5.2VA
DMUTE
-27VA 5.2VA 5V 12V +12V 3.3V-M1
AC 90V~240V 50HZ/60Hz U7
VD33,VD33D 3V3M VD18 3.3V 3.3V-M 8V
POWER BOARD
KEY Input
-27VA/VF+/VFDIG901 FLD DISPLAY
5V IC604 MM1623XFBE VIDEO BUFFER
TRIGGER CVBS R/Pr G/Y B/Pb Y C COAXIAL SPDIF
IC901 GMS81C2012(Hynix) Front Micom
IC903 RESET IC RC901 R/C
IC302~4 UTC4580 OP-AMP
+12V
+12V IC602 UTC4580 OP-AMP
FL RL CENTER FR RR WOOFER 6MHz L/R
JACK
RECTIFIER(FLD)
F+ F-23VA FLD LPF
REG(12V)
2. Power(SMPS) Block Diagram
RECTIFIER(14V)
12V
RECTIFIER
TRANS
RECTIFIER(9V) LPF
SWITCHING IC
REG(8V)
8V
3-23
REG(3.3V)
3.3V
REG(1.8V)
RECTIFIER(3.8V)
LPF 1.8V 5.2VA
RECTIFIER(5.2V)
LPF 5VD
LINE FILTER FEED B.
AC85~240V
PWR CTL
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 MT1389 DVDPLAYER ONE CHIP
SCL, SDA
EEP ROM
RXD, TXD
RS232C(MTK)
DQ[0:15]
3-24
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 IP4504 Motor Driver
IC503 4M x 16bit SDRAM
FOSO,TRSO,FMSO DMSO,,TROPEN TRCLOSE STBY,V1P4
KARAOKE BOARD
ACLK,ABCK ALRCK AMDAT DQM0,DQM1 SCL,SDA
IC509 OP Amp IC506 EEPROM
IC508 A/D Con. (Karaoke)
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)
4. MPEG & MEMORY Block Diagram
VIDEO Interface
URST,S_REQ VFD_RXD
VFD_SCK VFD_TXD M_REQ
PWR,PCE,PRD
A[0:20]
X501 27MHz
IC507 (74HCT244)
Voltage level shift
FRONT MICOM Interface (FRONT BOARD)
SCKO,TXDO,M-REQ
IC502 FLASH MEMORY (16 M )
AD[0:7]
3-25
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
3-26
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
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.
VF(+) Power dead R102 is defective
VF(-) Power dead ZD102 is defective
3.3V, 1.8V, 8V, 12V Power dead IC105 is defective
Power dead IC101 is defective
5V Power dead Q107 is defective
NOTES) NOTES) NOTES) NOTES)
Warning Parts that are shaded are critical With respect to risk of fire or electricial shock.
NOTES :
Symbol denotes AC ground. Symbol denotes DC chassis ground.
DV8731E4CH's '04. 1.6
3-27
3-28
2. AV/JACK, 5.1CH CIRCUIT DIAGRAM
All Video signal isn't appear or bad
2CH Audio out bad.
2CH Audio out bad.
SR14812B
3-29
3-30
3. SYSTEM CIRCUIT DIAGRAM
SR14811B
3-31
3-32
4. DRIVER CIRCUIT DIAGRAM
CD/DVD LD will not on
SR14810B
3-33
3-34
5. TIMER CIRCUIT DIAGRAM
Digital abnormal Remocon not operate
Remocon not operate
System not operate or Digitron abnormal or Key not operate.
Digital abnormal
SR14814A DV8731E4CH's '04. 1.6
3-35
3-36
6. KARAOKE CIRCUIT DIAGRAM (KARAOKE MODEL ONLY)
Karaoke not operate.
SR14813A DV8731E4CH's '04. 1.6
3-37
3-38
· 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 1 2 3 4 5 6 7 8 9 10 11 12 STOP PLAY HOLD MODE PIN NO. 13 1.52 2.65 2.63 2.6 3.15 2.65 2.72 0 1.48 3.43 0.2 0.2 3.59 3.95 4.1 3.64 2.07 5.03 7.56 1.85 1.57 1.52 2.33 5.21 3.15 2.9 3.13 2.6 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 38 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 STOP 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 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 PLAY 1 1 1 0 1 2.05 0 0 0 0 0 3.3 1 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 MODE PIN NO. 68 69 70 71 72 73 74 75 76 77 78 79 80 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 STOP 2.36 0 0.56 0 1.27 3.3 2.23 1.39 0 0 2.06 0 3.3 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 PLAY 0.32 0.37 0.46 3.2 1.42 3.3 1.93 0 0 0 0 0 3.3 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 MODE PIN NO. 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 STOP 1.26 1.23 1.28 0 3.3 2.35 1.8 0 1.39 1.37 1.31 0 1.33 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 PLAY 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 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 MODE PIN NO. 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 STOP 3.32 2.75 0 0 3.3 0 0 0 0 0 0 3.3 1.24 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 PLAY 3.32 0 0 0 3.3 0 0 0 0 0 0 3.3 1.24 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 MODE PIN NO. 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 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 STOP 0.83 3.19 1.74 1.71 1.71 1.72 3.19 0 0 0 0 3.19 1.55 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 PLAY 0.89 3.18 1.72 1.71 1.71 1.75 3.18 0 0 0 0 3.19 1.55 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 MODE PIN NO. 32 33 34 35 36 37 38 39 40 41 42 43 44 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 STOP PLAY MODE PIN NO. 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 1 2 3 4 5 6 7 8 9 10 11 12 13 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 14 15 16 17 18 19 20 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 STOP 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 2.94 0 2.9 0 3.25 3.27 0 1.35 1.64 1.56 0 3.19 0.12 3.2 5.11 2.11 5.04 2.29 2.28 0 5.19 2.29 2.3 5.04 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 PLAY 3.236 1.78 0 0.1 0 2 3.23 1.95 2.01 0 2.03 2.17 3.23 2 2 0 1.85 0 3.23 3.26 0 1.35 1.63 1.56 0 3.16 0.13 3.17 5.1 2.1 0 2.29 2.28 0 5.18 2.28 2.29 0 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 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 3.13 23.74 27.96 25.84 27.97 25.84 27.96 25.84 30.1 25.83 27.96 27.94 27.95 30.09 27.94 3.13 24.19 26.4 28.47 26.34 26.37 30.72 26.32 28.55 21.96 19.87 28.5 26.33 24.16 28.6 0 0 0 0 5.24 5.24 5.06 0 0 5.24 5.2 5.24 0 0 0 2.72 5.24 5.24 0 0 0 0 5.24 5.24 5.16 0 0 5.24 5.2 5.24 0 0 0 2.72 5.24 5.24 MODE PIN NO. 16 17 18 19 20 21 22 23 24 25 26 27 28 STOP 2.53 0 2.51 0 2.18 2.16 0 2.16 0.25 0.23 2.51 0.53 5.17 PLAY 2.52 0 2.51 0 2 2.05 0 1.96 0.42 0.42 2.51 0.8 5.16 0.1 5.19 2.2 2.2 5.24 MODE PIN NO. 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 STOP 30.09 28.09 30.09 30.09 30.09 30.09 28.12 28.13 28.06 28.16 28.14 28.13 28.12 28.14 30.23 2.1 2.2 2.24 2.17 0 0 0 3.2 PLAY 24.51 30.66 28.75 30.7 30.82 30.8 28.72 28.68 28.85 28.81 28.32 28.82 28.86 28.81 31 1.99 1.99 2.24 2 0 0 0 3.18
IC201 (IP4504)
1.49 2.58 2.63 2.61 2.63 2.6 2.63 0 1.51 3.79 0.2 0.2 3.96 3.95 3.96 3.97 3.94 3.93 7.95 1.51 1.51 1.51 2.73 5.21 1.02 2.63 2.61 2.62 5.07 1.81 3.34 3.94 3.37 0 12.89 11.91 9.71 8.08 5.07 0 0 1.73 1.73 1.73 1.73 1.75 2.15 2.2 2.18 2.16 2.14 1.74 1.52 2.59 2.61 2.57 2.82 2.69 2.68 0 1.48 3.8 0.2 0.2 3.95 3.94 3.9 3.58 2.86 5.01 7.94 1.79 1.53 1.52 2.73 5.18 0.09 2.84 2.63 2.57 5.06 1.81 3.34 3.92 3.34 0 12.89 11.91 9.51 8.02 5.05 0 0 0 1.73 1.73 1.73 1.73 1.74 2.21 2.18 0 2.14 1
31 0 0 IC502 (MX29L800) 0 0 0 3.2 0 3.2 3.26 3.2 0 3.2 0 0 0 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 0 0 0 0 0 3.23 0 3.17 0 3.17 0 3.17 0 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
IC901
0.1 5.19 2.28 2.4 5.24
IC503 (M12L64164A)
IC601(CS4391)
IC502 (MX29L800)
IC105(AN80T54)
IC604(MM1623)
IC501(MT1389 MPEG)
3-39
3-40
PRINTED CIRCUIT DIAGRAMS
1. MAIN P.C.BOARD
LOCATION GUIDE
3-41
3-42
2. KEY P.C.BOARD
LOCATION GUIDE
3. TIMER P.C.BOARD
LOCATION GUIDE
(Solder Side)
(Solder Side)
3-43
3-44
4. SCART & 5.1CH P.C.BOARD(OPTIONAL PART)
LOCATION GUIDE
5. SMPS P.C.BOARD
LOCATION GUIDE
(Solder Side)
(Solder Side)
3-45
3-46
SECTION 4 MECHANISM (DP-8)
CONTENTS
DECK MECHANISM PARTS LOCATIONS
· Top View..................................................4-1 · Top View(without Tray Disc) .................4-1 · Bottom View ...........................................4-1
5. Frame Assembly Up/Down ..............4-4 6. Belt Loading......................................4-4 7. Gear Pulley .......................................4-4 8. Gear Loading ....................................4-4 9. Guide Up/Down.................................4-4 10. PWB Assembly Loading ................4-4 11. Base Main........................................4-4
DECK MECHANISM DISASSEMBLY
1. Main Base .........................................4-2
1-1. Clamp Assembly Disc.......................4-2
1-1-1. Plate Clamp ..................................4-2 1-1-2. Magnet Clamp ..............................4-2 1-1-3. Clamp Upper.................................4-2
EXPLODED VIEW
1. Deck Mechanism Exploded View....4-5
2. Tray Disc ...........................................4-2 3. Base Assembly Sled ........................4-3
3-1. Gear Feed.........................................4-3 3-2. Gear Middle ......................................4-3 3-3. Gear Rack.........................................4-3
4. Rubber Rear......................................4-3
DECK MECHANISM PARTS LOCATION
· Top View (With Tray)
Procedure Starting No.
1
Parts Main Base Clamp Assembly Disc
Fixing Type
Disass Figembly ure 4-1 4-1
1
2
1, 2 1, 2, 3 1, 2, 3, 4 1 1, 6 1, 2, 6
3 4 5 6 7 8
Plate Clamp Magnet Clamp Clamp Upper Tray Disc Base Assembly Sled Gear Feed 4 Screws, 1 Connector 1 Locking Tabs
4-1 4-1 4-1 4-2 4-3 4-3
1, 2, 6, 8
9
Gear Middle
4-3
· Top View (Without Tray)
1, 2, 6, 8, 9 1, 2, 7 1, 2, 7
10 Gear Rack
1 Screw
4-3
11 Rubber Rear 12 Frame Assembly
4-3 1 Screw Bottom 4-4
Up/Down 1, 2 1, 2 ,13
13 Belt Loading 14 Gear Pulley
1 Locking Tab
4-4 4-4
1, 2, 13, 14 15 Gear Loading 1, 2, 7, 12, 16 Guide Up/Down 13, 14 1, 2, 13
17 PWB Assembly
1 Locking Tab
4-4 4-4
1 Locking Tab 1 Hook 2Screw
Bottom 4-4
Loading
1, 2, 7, 12, 18 Base Main 13, 14, 15, 16, 17
2 Locking Tabs
4-4
· 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. 4-1
DECK MECHANISM DISASSEMBLY
Fig. 4-1
Fig. 4-2
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.
4-2
DECK MECHANISM DISASSEMBLY
Fig. 4-3
3. Base Assembly Sled (Fig. 4-3)
1) Release 4 Screw(S2). 2) Disconnect the FFC Connector(C1)
3-3. Gear Rack
1) Release the Scerw(S3)
3-1. Gear Feed 3-2. Gear Middle
4. Rubber Rear (Fig. 4-3)
4-3
DECK MECHANISM DISASSEMBLY
Fig. 4-4
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)
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.
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.
11. Base Main(Fig. 4-4)
4-4
EXPLODED VIEWS
1. Deck Mechanism Exploded View
A00
001 002 003 018 014 013 020 A01 A02
439
017
012
435 015
015A
016
019 440 026
012B
012A
037 036 010 431 021
031
012C
A03 030 432 024 034 033 435
024A
430 025
035
035A
022 034 437 438
4-5
4-6