Zenith DVB318 Service Manual
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Zenith DVB318 Service Manual

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SERVICE MANUAL
Product Type: DVD VIDEO PLAYER
Chassis: DP7 (MD)
Manual Series: DVB318
Manual Part #: 3829RHN004A
Model Line: D
Product Year: 2003
Printed in U.S.A
CONTENTS
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Summary
Cabinet & Main Chassis
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Electrical
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Mechaunism
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Parts List
Published September 2003
by Technical Publications
Zenith Electronics Corporation
201 James Record Road
Huntsville, Alabama 35824-1513
Copyright © 2003 by Zenith Electronics Corporation
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Model Series:
DVB318

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Summary of Contents for Zenith DVB318

  • Page 1 Summary ......Cabinet & Main Chassis ............ Electrical ......................Mechaunism ............ Parts List Published September 2003 by Technical Publications Zenith Electronics Corporation 201 James Record Road Huntsville, Alabama 35824-1513 Copyright © 2003 by Zenith Electronics Corporation Printed in U.S.A...

  • Page 3: Table Of Contents

    SECTION 1 SUMMARY CONTENTS PRODUCT SAFETY SERVICING GUIDELINES FOR VIDEO PRODUCTS ..... 1-2 SERVICING PRECAUTIONS ....................1-3 • General Servicing Precautions • Insulation Checking Prodedure • Electrostatically Sensitive Devices SPECIFICATIONS ........................1-4...

  • Page 4: Product Safety Servicing Guidelines For Video Products

    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.

  • Page 5: Servicing Precautions

    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.

  • Page 6: Specifications

    SPECIFICATIONS • GENERAL Power requirements AC 120 V , 60 Hz Power consumption Dimensions (Approx.) 430 x 48 x 242 mm (16.9 x 1.9 x 9.5 inches) (W x H x D) Weight (Approx.) 2.34 kg (5.2 lbs) Operating temperature 5 °C to 35 °C (41 °F to 95 °F) Operating humidity 5 % to 90 %...
  • Page 7 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...
  • Page 8 EXPLODED VIEWS 1. Cabinet and Main Frame Section OPTIONAL PART SCART&5.1CH MODEL ONLY...
  • Page 9 2. Packing Accessory Section CABLE, COAXIAL 810 CABLE ASS'Y (3WAY RCA COMPONENT) CABLE, COAXIAL (DVI CABLE MOLEX) PLUG ASS'Y(1WAY(YELLOW)) PLUG ASS'Y(2WAY) CABLE DIN BATTERY REMOCON OWNER'S MANUAL PACKING SHEET PACKING PACKING BOX CARTON OPTIONAL PARTS...
  • Page 10 SECTION 3 ELECTRICAL CONTENTS ELECTRICAL TROUBLESHOOTING GUIDE & WAVEFORMS ........3-2 1. System Clock X501 (27Mhz).....................3-2 2. Initializing between MPEG and SDRAM ..................3-2 3. Initializing between MPEG(FLI2301B) and Flash ..............3-3 4. Sil170B is nitialized by M-Reset and D-Reset ................3-3 5. Reference Voltage 1 ........................3-3 6.

  • Page 11: Electrical Troubleshooting Guide & Waveforms

    ELECTRICAL TROUBLESHOOTING GUIDE & WAVEFORMS 1. System Clock X501 (27Mhz) NORMAL ABNORMAL 1) MPEG IC start oscilating 1) Logo Picture doesn’t appear IC501 MPEG after being installed VCC (STI5589) 2) Initial step fail * Initial step : power cord in -> green LED -> OFF ->...

  • Page 12: Initializing Between Mpeg(Fli2301B) And Flash

    3. Initializing between MPEG(FLI2301B) and Flash 1) MPEG IC start oscilating(27Mhz) after being WE signal should be confirmed by Flash or the installed VCC next step will not continue. 2) MPEG IC & FLI2301is initialized by / As that result, the initial step(power cord in -> M - RESE T green LED ->...

  • Page 13: Reference Voltage 2

    6. Reference Voltage 2 We can see how the reference voltage, Even though, the reference voltage come out mentioned previous page, will work on servo correctly from DSP, control.. If A/B/C/D are not biased by 2.1V, and checking 1) The DC level of RF signal from P/up is 2.1V the P/up is needed.

  • Page 14: Checking The Video Signal

    8. Checking the Video Signal Check the followings 1) Check the video output mode. if the output mdoe is progressive - on, there is no compos- IC403 23Pin ite signal. 34 pin buffer STI5589 the output mode should be changed to Composite out (MPEG) progressive - off...

  • Page 15: Checking The Second Step Of Servo (2)

    10. Checking the second step of servo (2) Let’s look over the initial step of servo 4) the following step will be done continuously DVD -Laser on -> move up/down in according to 1) when the tray is closed, first of all, it should be disc type, there will be RF signal…...

  • Page 16: Checking The Reset Port

    12. Checking the reset port Pin 81 of IC202, pin 124, 186 of IC501 and pin 12 of IC503 are related to RESET. We can know whether IC is intialized or not through those ports. The waveform shows the status when the reset signal works normally. If the /M-RESET is abnormal, then check the front u-com(IC901) and replace it /M-RESET (Pin124 of IC501) DSP_RST (Pin 81 of IC202)

  • Page 17: Checking The Track Jump

    14. Checking the track jump TE and TACT signals are output respectively from pin 54 and pin 34 of IC 202 during a normal play. SLED signal is output pin 29 of IC 202 and flow into pin 15 and pin 18 of IC 201 to operate a sled motor when to skip chapters or to scan.

  • Page 18: The Status Focus And Spindle Motor

    16. The status Focus and spindle motor The waveform is to display F+ signal from pin 9 IC201 and SPM+ from pin 10 IC201. F+ is used to control a focus actuator of pick - up and SPM+ is used to operate a spindle motor. So, we can know the position of the acuator and the speed and rotating direction of the spindle motor through those signals.

  • Page 19: Input Clock To Ic202

    18. Input Clock to IC202 The waveform and the block diagram as below show a clock input and output between IC202 and X201. Clocks generated in X201 is output and input into pin86 and pin87 of IC202. The clock frequency is 20MHz. IC202 IC 202 X201...

  • Page 20: Focus Drive Signal(Fact)

    20. Focus Drive signal(FACT) FACT is made from focus error signal at DSP(IC202) and is input to IC201. And then FACT is converted into F - and F+ in IC201. Finally, they are sent to pick - up to control a focus actuator. IC201 IC202 IC202...

  • Page 21: Fact And Fe For Dvd9 (Dual Disc)

    22. FACT and FE for DVD9 (Dual disc) FE signal becomes like the waveform 2, in case of DVD dual layer disc since the laser beam is reflected on both layer 0 and layer 1. Layer0 Layer1 23. System clock of MPEG IC The waveform and the block diagram as below show a clock input and output between IC501 and X501.
  • Page 22 24. 480P DATA_EN H_Synk V_Synk 25. 720P DATA_EN H_Synk V_Synk 3-13...

  • Page 23: 80I

    26. 1080i DATA_EN H_Synk V_Synk 3-14...

  • Page 24: Block Diagrams

    BLOCK DIAGRAMS 1. DVD OVERALL BLOCK DIAGRAM DV7832NXS 3-15...

  • Page 25: Power Block Diagram

    2. POWER BLOCK DIAGRAM DV7832NXS 3-16...

  • Page 26: Servo Block Diagram

    3. SERVO BLOCK DIAGRAM DV7832NXS 3-17...

  • Page 27: Mpeg Block Diagram

    4. MPEG BLOCK DIAGRAM DV7832NXS 3-18...

  • Page 28: Genesis & Dvi Block Diagram

    5. GENESIS & DVI BLOCK DIAGRAM DV7832NXS 3-19...

  • Page 29: Audio Block Diagram

    6. AUDIO Block Diagram DV7832NXS 3-20...

  • Page 31: Circuit Diagrams

    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.

  • Page 32: Rf & Servo Circuit Diagram

    2. RF & SERVO CIRCUIT DIAGRAM DVD reading fail RF Amplified The final signal for RF CD reading fail RF Amplified & Filtered Tray open/close Motor drive IC Plup, Spindle, Loading Motor not work DSP initializing signal -servo is not work Interface line with MPEG IC Find best point for Tracking...

  • Page 33: System Circuit Diagram

    3. SYSTEM CIRCUIT DIAGRAM Clock generation MPEG IC • Initial function • Video output •Aduio output 13.3MHz SDRAM clock SDRAM Logo picture will not display DSP RESET Signal Main data interface Main command data and clock 1.8V Regulator Level shift IC initial function will be abnormal Main Reset signal from front µ-com...

  • Page 34: Audio & Jack Circuit Diagram

    4. AUDIO & JACK CIRCUIT DIAGRAM FLD not work Video signal does not appear 2CH Audio dead 2CH Audio dead DV7832NXS 3-27 3-28...

  • Page 35: Timer/5.1Ch Circuit Diagram

    5. TIMER/5.1CH CIRCUIT DIAGRAM Power LED abnormal Remocon not operate System not operate System not operate or Digitron abnormal or Key not operate. Digital abnormal DV7832NXS 3-29 3-30...

  • Page 36: Dvi Circuit Diagram

    6. DVI CIRCUIT DIAGRAM DV7832NXS 3-31 3-32...

  • Page 37: Circuit Voltage Chart

    • CIRCUIT VOLTAGE CHART MODE MODE MODE MODE MODE MODE MODE MODE MODE MODE STOP PLAY STOP PLAY STOP PLAY STOP PLAY STOP PLAY STOP PLAY STOP PLAY STOP PLAY STOP PLAY STOP PLAY PIN NO. PIN NO. PIN NO. PIN NO.
  • Page 38 MODE MODE MODE MODE MODE MODE MODE MODE MODE MODE STOP PLAY STOP PLAY STOP PLAY STOP PLAY STOP PLAY STOP PLAY STOP PLAY STOP PLAY STOP PLAY STOP PLAY PIN NO. PIN NO. PIN NO. PIN NO. PIN NO. PIN NO.
  • Page 39 Tran- EE Mode PB Mode Tran- EE Mode PB Mode sistor sistor C104 18.40 17.40 0.00 C532 3.21 0.00 3.21 0.00 C109 4.99 4.95 0.00 C545 3.17 0.00 3.16 0.00 C112 4.96 C546 1.77 0.00 1.73 0.00 0.00 4.93 0.00 C114 4.98 0.00...

  • Page 40: Printed Circuit Diagrams

    PRINTED CIRCUIT DIAGRAMS 1. MAIN P.C.BOARD (TOP VIEW) LOCATION GUIDE 3-39 3-40...

  • Page 41: Main P.c.board (Bottom View)

    2. MAIN P.C.BOARD (BOTTOM VIEW) LOCATION GUIDE 3-41 3-42...

  • Page 42: Key P.c.board

    3. KEY P.C.BOARD (Solder Side) 4. TIMER P.C.BOARD LOCATION GUIDE (Solder Side) 3-43 3-44...

  • Page 43: Power(Smps) P.c.board

    5. POWER(SMPS) P.C.BOARD 6. DVI P.C.BOARD LOCATION GUIDE LOCATION GUIDE (Solder Side) (Solder Side) 3-45 3-46...
  • Page 45 SECTION 4 MECHANISM CONTENTS 5. Frame Assembly Up/Down ....4-4 DECK MECHANISM PARTS 6. Belt Loading........4-4 LOCATIONS 7. Gear Pulley ........4-4 8. Gear Loading ........4-4 • Top View..........4-1 9. Guide Up/Down.........4-4 • Top View(without Tray Disc) ....4-1 • Bottom View ...........4-1 10.
  • Page 46 DECK MECHANISM PARTS LOCATION • Top View (With Tray) Procedure Disass Fig- Parts Fixing Type embly Starting No. Holder 2 Screws, Clamp 2 Locking Tabs Clamp Assembly Disc 1, 2 Plate Clamp 1, 2, 3 Magnet Clamp 1, 2, 3, 4 Clamp Upper Tray Disc 1, 6...
  • Page 47 DECK MECHANISM DISASSEMBLY Fig. 4-1 Fig. 4-2 1. Holder Clamp (Fig. 4-1) 2. Tray Disc (Fig. 4-2) 1) Release 2 Screws(S1). 1) Insert and push a Driver in the emergency eject 2) Unhook 2 Locking Tabs(L1). hole(A) at the right side, or put the Driver on the 3) Lift up the Holder Clamp and then separate it from the Lever(B) of the Gear Emergency and pull the Lever(B) Base Main.
  • Page 48 DECK MECHANISM DISASSEMBLY Fig. 4-3 3. Base Assembly Sled (Fig. 4-3) 3-3. Gear Assembly Rack 1) Release the Scerw(S3) 1) Release 4 Screw(S2). 2) Disconnect the FFC Connector(C1) 4. Rubber Rear (Fig. 4-3) 3-1. Gear Assembly Feed 3-2. Gear Middle...
  • Page 49 DECK MECHANISM DISASSEMBLY Fig. 4-4 5. Frame Assembly Up/Down (Fig. 4-4) 8. Gear Loading (Fig. 4-4) 9. Guide Up/Down (Fig. 4-4) Note 1) Move the Guide Up/Down in direction of arrow(A) as Put the Base Main face down(Bottom Side) Fig.(A) 1) Release the Screw(S4) 2) Push the Locking Tab(L5) down and then lift up the 2) Unlock the Locking Tab(L3) in direction of arrow and...
  • Page 51 EXPLODED VIEWS 1. Deck Mechanism Exploded View 024A 024B 024A 011A 015A 015B 015C...
  • Page 53 88766-2800 DVI CABLE MOLEX 300 6850R-PCA8F CABLE,COAXIAL 3WAY RCA COMPONENT RED/BLUE/GR *** REMOTE CONTROLLER 6711R2N071A REMOTE CONTROLLER ASSEMBLY J5 NOR DV5936N HA1UZZ ZENITH *** PANEL ASSEMBLY , FRONT,KEY *** 3501R-3014M BOARD ASSEMBLY DVD DV7832NXS AA1UZZ 3581R-T069C DOOR ASSEMBLY DVD DV7832NXS HA1UZZ...
  • Page 54 S AL LOCA. NO. PART NO. DESCRIPTION SPECIFICATION REMARKS L902 6200HJC102A FILTER(CIRC),EMC HB-1M2012-102JT CERATECH TP LED901 0DL325319AA SPR325MVWT31 TP ROHM GREEN/RED Q902 0TR124009AP TRANSISTOR,BIPOLARS DTC124EK TP ROHM KOREA SOT23 3 R901 0RH6800C622 RESISTOR,METAL GLAZED(CHIP) 680 OHM 1 / 16 W 1608 5.00% D R902 0RH8200C622 RESISTOR,METAL GLAZED(CHIP)
  • Page 55 S AL LOCA. NO. PART NO. DESCRIPTION SPECIFICATION REMARKS 015B 4560R-0008A PULLEY MOTOR 015C 4680R-E007A MOTOR(MECH) FEEDING BCZ3B01 SANKYO FOR DVD 015C 4680R-E008A MOTOR(MECH) FEEDING RF-300EA-1D390 MABUCHI 4470R-0056A GEAR LOADING 4974R-0046A GUIDE UP/DOWN(DP-7) 3040R-M005A BASE MAIN (DP7-43MM) MOLD 4680R-C010A MOTOR(MECH) SPINDLE JCL9B78 SANKYO FOR DVD 4681R-B005A MOTOR ASSEMBLY...
  • Page 56 S AL LOCA. NO. PART NO. DESCRIPTION SPECIFICATION REMARKS C221 0CH8106F611 CAPACITOR,CHIP[AL. ELECTROLYTI 10UF 16V M 85STD(CYL) R/TP C222 0CH1105D942 CAPACITOR,CHIP[CERAMIC M/L HD 1UF 10V Z Y5V(F) 1508 R/TP C223 0CH1105D942 CAPACITOR,CHIP[CERAMIC M/L HD 1UF 10V Z Y5V(F) 1508 R/TP C224 0CH1103K562 CAPACITOR,FIXED CERAMIC(Temp.c...
  • Page 57 S AL LOCA. NO. PART NO. DESCRIPTION SPECIFICATION REMARKS C401 0CH8476C611 CAPACITOR,CHIP[AL. ELECTROLYTI 47UF 6.3V M 85STD(CYL) R/TP C402 0CH8105K611 CAPACITOR,FIXED ELECTROLYTIC 1UF 50V 20% 85STD (CYL) R/TP C403 0CH8105K611 CAPACITOR,FIXED ELECTROLYTIC 1UF 50V 20% 85STD (CYL) R/TP C404 0CH8105K611 CAPACITOR,FIXED ELECTROLYTIC 1UF 50V 20% 85STD (CYL) R/TP C405...
  • Page 58 S AL LOCA. NO. PART NO. DESCRIPTION SPECIFICATION REMARKS C501 0CH1104K942 CAPACITOR,CHIP[CERAMIC M/L HD 0.1UF 50V Z Y5V(F) 1508 R/TP C502 0CH1104K942 CAPACITOR,CHIP[CERAMIC M/L HD 0.1UF 50V Z Y5V(F) 1508 R/TP C503 0CH1104K942 CAPACITOR,CHIP[CERAMIC M/L HD 0.1UF 50V Z Y5V(F) 1508 R/TP C504 0CH1104K942 CAPACITOR,CHIP[CERAMIC M/L HD...
  • Page 59 S AL LOCA. NO. PART NO. DESCRIPTION SPECIFICATION REMARKS C559 0CH4330K412 CAPACITOR,CHIP[CERAMIC M/L TC 33P 50V J COG 1.6X0.8 R/TP C560 0CH1104K942 CAPACITOR,CHIP[CERAMIC M/L HD 0.1UF 50V Z Y5V(F) 1508 R/TP C561 0CH1104K942 CAPACITOR,CHIP[CERAMIC M/L HD 0.1UF 50V Z Y5V(F) 1508 R/TP C562 0CH1104K942 CAPACITOR,CHIP[CERAMIC M/L HD...
  • Page 60 S AL LOCA. NO. PART NO. DESCRIPTION SPECIFICATION REMARKS C665 0CH1104K942 CAPACITOR,CHIP[CERAMIC M/L HD 0.1UF 50V Z Y5V(F) 1508 R/TP C667 0CH1104K942 CAPACITOR,CHIP[CERAMIC M/L HD 0.1UF 50V Z Y5V(F) 1508 R/TP C668 0CH8476C611 CAPACITOR,CHIP[AL. ELECTROLYTI 47UF 6.3V M 85STD(CYL) R/TP C669 0CH1104K942 CAPACITOR,CHIP[CERAMIC M/L HD...
  • Page 61 S AL LOCA. NO. PART NO. DESCRIPTION SPECIFICATION REMARKS L408 6200HJC102A FILTER(CIRC),EMC HB-1M2012-102JT CERATECH TP L409 6200HJC102A FILTER(CIRC),EMC HB-1M2012-102JT CERATECH TP L410 6200HJC102A FILTER(CIRC),EMC HB-1M2012-102JT CERATECH TP L411 6200JB8010V FILTER(CIRC),EMC LFA20-2A1E473MT MITSUBISHI MAT L501 6200HJC102A FILTER(CIRC),EMC HB-1M2012-102JT CERATECH TP L502 6200HJC102A FILTER(CIRC),EMC HB-1M2012-102JT CERATECH TP...
  • Page 62 S AL LOCA. NO. PART NO. DESCRIPTION SPECIFICATION REMARKS R214 0RH4700C422 RESISTOR,METAL GLAZED(CHIP) 470 OHM 1 / 16 W 1608 1.00% D R215 0RH4700C422 RESISTOR,METAL GLAZED(CHIP) 470 OHM 1 / 16 W 1608 1.00% D R216 0RH1802C422 RESISTOR,METAL GLAZED(CHIP) 18K OHM 1 / 16 W 1608 1.00% D R217 0RH0000C622 RESISTOR,METAL GLAZED(CHIP)
  • Page 63 S AL LOCA. NO. PART NO. DESCRIPTION SPECIFICATION REMARKS R278 0RH0472C622 RESISTOR,METAL GLAZED(CHIP) 47 OHM 1 / 16 W 1608 5.00% D R279 0RH0472C622 RESISTOR,METAL GLAZED(CHIP) 47 OHM 1 / 16 W 1608 5.00% D R280 0RH0272C622 RESISTOR,METAL GLAZED(CHIP) 27 OHM 1 / 16 W 1608 5.00% D R281 0RH0272C622 RESISTOR,METAL GLAZED(CHIP)
  • Page 64 S AL LOCA. NO. PART NO. DESCRIPTION SPECIFICATION REMARKS R417 0RH3300C622 RESISTOR,METAL GLAZED(CHIP) 330 OHM 1 / 16 W 1608 5.00% D R418 0RH1001C622 RESISTOR,METAL GLAZED(CHIP) 1K OHM 1 / 16 W 1608 5.00% D R419 0RH1001C622 RESISTOR,METAL GLAZED(CHIP) 1K OHM 1 / 16 W 1608 5.00% D R420 0RH1001C622 RESISTOR,METAL GLAZED(CHIP)
  • Page 65 S AL LOCA. NO. PART NO. DESCRIPTION SPECIFICATION REMARKS R563 0RH1002C622 RESISTOR,METAL GLAZED(CHIP) 10K OHM 1 / 16 W 1608 5.00% D R567 0RH0752C622 RESISTOR,METAL GLAZED(CHIP) 75 OHM 1 / 16 W 1608 5.00% D R568 0RH0752C622 RESISTOR,METAL GLAZED(CHIP) 75 OHM 1 / 16 W 1608 5.00% D R569 0RH0752C622 RESISTOR,METAL GLAZED(CHIP)
  • Page 66 S AL LOCA. NO. PART NO. DESCRIPTION SPECIFICATION REMARKS R635 0RH0000C622 RESISTOR,METAL GLAZED(CHIP) 0 OHM 1 / 16 W 1608 5.00% D R636 0RH0000C622 RESISTOR,METAL GLAZED(CHIP) 0 OHM 1 / 16 W 1608 5.00% D R641 0RH0222C622 RESISTOR,METAL GLAZED(CHIP) 22 OHM 1 / 16 W 1608 5.00% D R642 0RH0222C622 RESISTOR,METAL GLAZED(CHIP)
  • Page 67 S AL LOCA. NO. PART NO. DESCRIPTION SPECIFICATION REMARKS LED02 0DL111209EA LTL-1CHKES-UA TP LITEON GREEN Q102 0TR105009AD TRANSISTOR,BIPOLARS KRA105M KEC TP TO92 50V 100MA Q107 0TR127309AA TRANSISTOR KTA1273-TP-Y (KTA966A)KEC R102 0RF0200F708 RESISTOR,VARIABLE[CARBON FILM] 0.2 OHM 1/6 W 10% TA26 R103 0RS5602K619 RESISTOR,FIXED METAL OXIDE FIL 56K OHM 2 W 5.00% TR...
  • Page 68 S AL LOCA. NO. PART NO. DESCRIPTION SPECIFICATION REMARKS R100 0RD1504H632 RESISTOR,FIXED CARBON FILM 1.5M OHM 1/2 W 5.00% MF10 R101 614-007A RESISTOR 2.7/2W CEMENT SMPS V T101 6170RNGW05C TRANSFORMER,SMPS[COIL] EER2828 HORIZENTAL SOOJUNHG W0 V101 656-004C VARISTOR,DRAWING SVC681D-10A SAMHWA 4.O CUT IC104 0IPMGUK001A IC,POWER MANAGEMENT SL431-AT AUK 3PIN TO-92 TP PRO...

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