When servicing this product, under no circumstances should the original design be modified or altered without permission from Zenith Electronics Corporation. All components should be replaced only with types identical to those in the original circuit and their physical location, wiring and lead dress must conform to original layout upon completion of repairs.
SERVICING PRECAUTIONS CAUTION : Before servicing the DVD covered by this service Electrostatically Sensitive (ES) Devices data and its supplements and addends, read and follow the Some semiconductor (solid state) devices can be damaged SAFETY PRECAUTIONS. NOTE : if unforeseen circum- easily by static electricity.
SPECIFICATIONS • GENERAL Power requirements AC 120 V, 60 Hz Power consumption Dimensions (Approx.) 440 X 80 X 425 mm (17.3 x 3.1 x 16.7 inches) (w x h x d) Weight (Approx.) 5.1 kg (11.2 lbs) Operating temperature 5˚C to 35˚C (41˚F to 95˚F) Operating humidity 5 % to 90 % •...
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SECTION 2 CABINET & MAIN CHASSIS CONTENTS 1. EXPLODED VIEWS ........................2-2 1. Cabinet and Main Frame Section ...................2-2 2. Packing Accessory Section ....................2-4...
EXPLODED VIEWS 1. Cabinet and Main Frame Section...
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• Cabinet and Main Frame Section • Cabinet and Main Frame Section Part List LOCA NO LG PART NO A DESCRIPTION SPECIFICATION REMARKS ASSEMBLY PARTS SECTION 6871R-5097A O PWB(PCB) ASSEMBLY,TOTAL DM6000 SH KEY1 3501RF4030L O BOARD ASSEMBLY DVD DM7912NM HA1UZZ FRONT 6885R-0700A O SUB PWB(PCB) ASSEMBLY DM7912NM HA1UZZ 55(U),53(S),00...
ER03X HI WATT 1.5V .MA/H AAA 6851R-0033A O CABLE ASSEMBLY 1WAY(Y) + 2WAY(R/W) 1.8M + S-V 6611R1D003A O PLUG ASSEMBLY 1WAY RC1-18RRBS1-0 FREE OF CD 6611R2D003A O PLUG ASSEMBLY 2WAY RC2-18RRBS1-0 FREE OF CD_ 6711R1N104D O REMOTE CONTROLLER ASSEMBLY N6 NOR DM7912NM HA1UZZ ZENITH...
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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.
ELECTRICAL TROUBLESHOOTING GUIDE 1. Power check flow No VF+ No 5V_A . Is 5.2VA section working? Is 5.2VA section working? Is 5.2V present at emitter Check F102 No 5.2VA. of Q107? Replace D109. Check F101 Replace Q107. Is there a DC voltage at Replace R101.
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? Tray Close to Closed position Judge whether have disc in 5 tray 1. Judge disc type in frse tray 2.
3. Test & debug flow TEST Check the AC Vol tage Check the POWER PART Power PCBA (110V or 220V) Switch on the Power PCBA the DC Vol tage outputs OK? Check the POWER PART (5V, 3.3V, 8V, 12V) Make sure the main PCBA don’t Is 3.3V and 2.5V DC Check the regulators or diode( D670).
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RESET or Power On. Flash Check connecti on lines between FLASH Memory operates Show LOGO? & MT1379 and the FLASH access time properly? whether is sui table or not. SDRAM Check connection lines between SDRAM(IC502,IC503) & MT1379 and the works properl y? SDRAM is damaged.
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Does the SLED move Check the connection line of Motor Driver STBY to inner side when it is at STBY signal . Pin is High? outter positi on? Check the rel ated circuit of Motor Driver STBY FMSO. Pin is High? Check the amp circuit on SL+ and SL- output motor driver.
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Check the laser power circuit Laser turns on when LD01 or LD02 output on MT1336 and connecting to reading disc? properly? power transistor. (Q204, Q205) Collector Check therel ated ci rcuit on voltage of power laser power transi stor transistor is OK? ( Q204, Q205) Check cable connection between transistor couput and pick-up head.
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Proper Check connections between signals on A, B, C, Focus ON OK? MT1336 and pick-up head. D of MT1336 Check the related circuit Proper FEO signal on MT1336 FEO sugnal . on MT1336? Check FEO connection between MT1336 and MT1379 Check the related Proper FEO signal Track On OK?
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Audio Normal DAC received Check connection between MT1379 Audio output & Audio DAC. (Check VRST#, ACLK, correct data stream? when disc playback? ABCK, ASDAT3) Normal Check the related circuit of Audio DAC Audio DAC. (Check Audio out? (IC601) out Pin 14, 15,18,19) Check Audio filter, amplify, mute circuit.
DETAILS AND WAVEFORMS ON SYSTEM TEST AND DEBUGGING 1. SYSTEM 27MHz CLOCK,RESET,FLASH R/W SIGNAL 1) MT1379 main clock is at 27MHz(X501) 3.8V, 27MHz FIG 1-1 2) MT1379 & MT1336 reset is high active. Power Cord in 5.2VA PWR_CTL(CN505 PIN 7) M_RESET(CN505 PIN 9) URST(IC501 PIN 188) FIG 1-2...
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3) RS232 waveform during procedure(Downloading) TXD(J6 PIN3) RXD(J6 PIN 2) FIG 1-3 4) Flash R/W enable signal during download(Downloading) FRD(IC5A1 PIN 28) FWR(IC5A1 PIN 11) FIG 1-4 3-11...
2. Voltages are DC-measured with a digital voltmeter MODIFIED OR ALTERED WITHOUT PERMISSION IMPLEMENTATION OF THE LATEST SAFETY AND during Play mode. FROM THE ZENITH ELECTRONICS CORPORATION. PERFORMANCE IMPROVEMENT CHANGES INTO ALL COMPONENTS SHOULD BE REPLACED ONLY THE SET IS NOT DELAYED UNTIL THE NEW SERVICE WITH TYPES IDENTICAL TO THOSE IN THE ORIGI- LITERATURE IS PRINTED.
2. SYSTEM CIRCUIT DIAGRAM No Power on AUDIO DAC interface VIDEO interface System not working or screen is abnormal RF & MOTOR DRIVE interface System not working or Digitron not display System not operate Program download fail Video signal Y Digitron all not display SR5850A Video signal Color...
4. TIMER CIRCUIT DIAGRAM Remocon not operate Digital abnormal System not operate System not operate or Digitron abnormal or Key not operate. SR14171B DM7912N 3-35 3-36...
6. AV/JACK CIRCUIT DIAGRAM All Video signal isn't appear or bad 2.5V not working SR5850C Video Signal Y Video Signal CVBS DM7912N Video Signal Color 2CH Audio 3-39 3-40...
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Q201 Q202 Q203 Q204 Q205 IC201 IC202 IC501 IC502 IC505 IC510 IC5A1 IC601 IC602 IC604 (MT1336E) (MOTOR) (MT1379) (SDRAM) (EEPROM) (BUFFER) (FLASH) (CS4391) (AMP) (MM1623XFBE) STOP PLAY STOP PLAY STOP PLAY STOP PLAY STOP PLAY PIN STOP PLAY STOP PLAY STOP PLAY STOP PLAY STOP PLAY STOP PLAY STOP PLAY STOP PLAY STOPPLAYSTOP PLAY 5.14...
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Parts that are shaded are critical NOTES) With respect to risk of fire or NOTES) electricial shock. SECTION 5 REPLACEMENT PARTS LIST MODELS : A) DVB352(DM7912NM) HA1UZZ(ZENITH) RUN DATE:18.JULY.2003 .MECHANICAL SECTION NSP:Not Service Part LOCA NO LG PART NO A DESCRIPTION...
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O CABLE ASSEMBLY 1WAY(Y) + 2WAY(R/W) 1.8M + S-V 6611R1D003A O PLUG ASSEMBLY 1WAY RC1-18RRBS1-0 FREE OF CD 6611R2D003A O PLUG ASSEMBLY 2WAY RC2-18RRBS1-0 FREE OF CD_ .REMOTE CONTROL SECTION 6711R1N104D O REMOTE CONTROLLER ASSEMBLY N6 NOR DM7912NM HA1UZZ ZENITH...
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.ELECTRICAL SECTION LOCA NO LG PART NO A DESCRIPTION SPECIFICATION REMARKS BC101 636-004C O FILTER(CIRC),EMC BEAD CORE BFS3550R2FD8,R T/P BD101 0DD160000DA O DIODE S1WBA60(1A 600V) SHIDENKEN C101 624-088S O CAPACITOR,DRAWING MPX104K ETR/EUROPTRONIC BULK C102 624-088S O CAPACITOR,DRAWING MPX104K ETR/EUROPTRONIC BULK C103 0CE1076Q600 O CAPACITOR,ELECTROLYTIC...
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LOCA NO LG PART NO A DESCRIPTION SPECIFICATION REMARKS C255 0CH1104K942 O CAPACITOR,CHIP[CERAMIC M/L HD 0.1UF 50V Z Y5V(F) 1508 R/TP C257 0CH1105D942 O CAPACITOR,CHIP[CERAMIC M/L HD 1UF 10V Z Y5V(F) 1508 R/TP C258 0CH1105D942 O CAPACITOR,CHIP[CERAMIC M/L HD 1UF 10V Z Y5V(F) 1508 R/TP C259 0CH1105D942 O CAPACITOR,CHIP[CERAMIC M/L HD...
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LOCA NO LG PART NO A DESCRIPTION SPECIFICATION REMARKS C425 0CH1392K562 O CAPACITOR,FIXED CERAMIC(Temp.c 3900PF 50V K Z5U(E) 1608 R/TP C426 0CE2264F638 O CAPACITOR,ELECTROLYTIC 22M SRA 16V M FM5 TP(5) C502 0CH1103K562 O CAPACITOR,FIXED CERAMIC(Temp.c 0.01UF 50V 10% X7R(X) 1608 R/T C503 0CH1103K562 O CAPACITOR,FIXED CERAMIC(Temp.c...
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LOCA NO LG PART NO A DESCRIPTION SPECIFICATION REMARKS C566 0CH4221K412 O CAPACITOR,CHIP[CERAMIC M/L TC 220P 50V J COG 1.6X0.8 R/TP C567 0CH4221K412 O CAPACITOR,CHIP[CERAMIC M/L TC 220P 50V J COG 1.6X0.8 R/TP C568 0CH4221K412 O CAPACITOR,CHIP[CERAMIC M/L TC 220P 50V J COG 1.6X0.8 R/TP C569 0CH4221K412 O CAPACITOR,CHIP[CERAMIC M/L TC...
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LOCA NO LG PART NO A DESCRIPTION SPECIFICATION REMARKS C901 0CN1040K948 O CAPACITOR,FIXED TUBULAR(High d 0.1UF D 50V 80%,-20% F(Y5V) TA C905 0CN6810K518 O CAPACITOR TUBULA(HIGH DIELE) 680P TA26 C906 0CE1063F638 O CAPACITOR,AL.ELECTROLYTIC 10M SRE/SE 16V M FM5 TP(5) C907 0CE4763C638 O CAPACITOR,FIXED ELECTROLYTIC 47UF SRE,SE 6.3V 20% FM5 TP 5...
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LOCA NO LG PART NO A DESCRIPTION SPECIFICATION REMARKS L103 633-088G O COIL,CHOKE CHOCK(22MH) 5MM TOKO TP L105 633-088G O COIL,CHOKE CHOCK(22MH) 5MM TOKO TP L201 0LR0102J025 O INDUCTOR,RADIAL LEAD 10UH 5% 4X5 TR5 L202 6200HJC102A O FILTER(CIRC),EMC HB-1M2012-102JT CERATECH TP L203 0LR0102J025 O INDUCTOR,RADIAL LEAD...
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LOCA NO LG PART NO A DESCRIPTION SPECIFICATION REMARKS R124 0RD1800F608 O RESISTOR,FIXED CARBON FILM 180 OHM 1/6 W 5% TA26 R125 0RD3901F608 O RESISTOR,FIXED CARBON FILM 3.9K OHM 1/6 W 5% TA26 R126 0RD1001F608 O RESISTOR,FIXED CARBON FILM 1K OHM 1/6 W 5% TA26 R127 0RN3601E408 O RESISTOR,FIXED METAL FILM...
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LOCA NO LG PART NO A DESCRIPTION SPECIFICATION REMARKS R256 0RH1002C622 O RESISTOR,METAL GLAZED(CHIP) 10K OHM 1 / 16 W 1608 5.00% D R257 0RH1002C622 O RESISTOR,METAL GLAZED(CHIP) 10K OHM 1 / 16 W 1608 5.00% D R258 0RH0000C622 O RESISTOR,METAL GLAZED(CHIP) 0 OHM 1 / 16 W 1608 5.00% D R259 0RH0000C622...
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LOCA NO LG PART NO A DESCRIPTION SPECIFICATION REMARKS R527 0RH4701C622 O RESISTOR,METAL GLAZED(CHIP) 4.7K OHM 1 / 16 W 1608 5.00% D R528 0RH1201C622 O RESISTOR,METAL GLAZED(CHIP) 1.2K OHM 1 / 16 W 1608 5.00% D R529 0RH0000C622 O RESISTOR,METAL GLAZED(CHIP) 0 OHM 1 / 16 W 1608 5.00% D R534 0RH1001C622...
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LOCA NO LG PART NO A DESCRIPTION SPECIFICATION REMARKS R6W4 0RH1100C622 O RESISTOR,METAL GLAZED(CHIP) 110 OHM 1 / 16 W 1608 5.00% D R6W5 0RH0222C622 O RESISTOR,METAL GLAZED(CHIP) 22 OHM 1 / 16 W 1608 5.00% D R735 0RH0000C622 O RESISTOR,METAL GLAZED(CHIP) 0 OHM 1 / 16 W 1608 5.00% D R901 0RD6800F608...