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Zenith ZHD-311 Service Manual

Service manual
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SERVICE MANUAL

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Summary of Contents for Zenith ZHD-311

  • Page 1 SERVICE MANUAL...
  • Page 6 Weight...
  • Page 9 CN902 CN902 : -32.4 VKK PIN3 : -27.5 FL- PIN4 : -23.7 FL+ PIN9 : +5.0...

  • Page 12: Block Diagram

    BLOCK DIAGRAM...

  • Page 13: Power Schematic Diagram

    SCHEMATIC DIAGRAMS 1. POWER SCHEMATIC DIAGRAM...
  • Page 14 2. MICOM SCHEMATIC DIAGRAM...

  • Page 15: Front Schematic Diagram

    3. FRONT SCHEMATIC DIAGRAM 2-10 2-11...
  • Page 16 4. DSP&AMP SCHEMATIC DIAGRAM 2-12 2-13...

  • Page 17: Dsp Schematic Diagram

    5. DSP SCHEMATIC DIAGRAM 2-14 2-15...
  • Page 18 6. KARAOKE SCHEMATIC DIAGRAM(KARAOKE MODEL ONLY) 2-16 2-17...

  • Page 19: Wiring Diagram

    WIRING DIAGRAM 2-18 2-19...

  • Page 20: Printed Circuit Board Diagrams

    PRINTED CIRCUIT BOARD DIAGRAMS 1. MAIN/DVD P.C. BOARD DIAGRAM (TOP) 2-20 2-21...
  • Page 21 2. MAIN/DVD P.C. BOARD DIAGRAM (BOTTOM) 2-22 2-23...

  • Page 22: Front P.c. Board

    3. FRONT P.C. BOARD 2-24 2-25...

  • Page 23: Smps P.c. Board

    4. SMPS P.C. BOARD 5. KARAOKE P.C. BOARD (KARAOKE MODEL ONLY) LOCATION GUIDE 2-26 2-27...
  • Page 24 Power On 1. 8082 initializes SERVO, DSP & RISC registers 2. Write RISC code to SDRAM 3. Reset RISC Show LOGO Tray Closed? Tray Close to Closed position SLED at Inner Side? SLED Moves to Inner Position 1. Judge whether have disc and disc type 2.
  • Page 25 TEST Check the AC Vol tage Check the POWER PART Power PCBA (110V or 220V) Switch on the Power PCBA Is the DC Voltage outputs OK? Check the POWER PART (-34V,-9V,36V,5.6V ,5V,8V,9V,2.5V, 3.3V) Are 3.3V and 5V DC Check the regulators or diode(D501). outputs normal on main PCBA? 1.
  • Page 26 , 115.
  • Page 28 ES6698. ES6698. ES6698.
  • Page 30 PWM IC Check connection between received correct data IC300 ABCK, ALRCK, stream? ASDAT Normal Check the related circuit of PWM IC out?(IC300) PWM.(Check Audio out Pins52, 54, 55, 59,62, 68 Check Digital Amp circuit (IC301, IC302)
  • Page 44 → → → → → →...

  • Page 46: Dvd Part Schematic Diagrams

    DVD PART SCHEMATIC DIAGRAMS 1. DVD MPEG & DSP SCHEMATIC DIAGRAM 3-22 3-23...

  • Page 47: Rf & Servo Schematic Diagram

    2. RF & SERVO SCHEMATIC DIAGRAM 3-24 3-25...
  • Page 48 3. KARAOKE SCHEMATIC DIAGRAM 3-26 3-27...

  • Page 50: Section 4. Exploded Views

    SECTION 4. EXPLODED VIEWS • CABINET AND MAIN FRAME SECTION OPTIONAL PART...

  • Page 51: Deck Mechanism Exploded View

    • DECK MECHANISM EXPLODED VIEW NSP : Non SVC Parts LOCA. NO. PART NO. DESCRIPTION SPECIFICATION REMARKS 6721RJ0870E DECK ASSEMBLY,AUDIO HOME THEATER LH-TK750/550/250 4861R-0016B CLAMP ASSEMBLY DISC DP7 - SH 015B 3041R-T001A BASE ASSEMBLY MAIN DP-9T-ESS 3041R-T001B BASE ASSEMBLY SLED DP-9T-DI -ESS-SAMSUNG 015A 3300R-0547A PLATE...

  • Page 52: Section 5. Speaker Section

    SECTION 5. SPEAKER SECTION • MODEL : LHS-25SCS A800 A : LGEMS(MEXICO) , LGEPS(PANAMA) , LGEPR(PERU) , LGECL(CHILE) A : PETERSBURG(LITHUANIA) , SAKAL(ISRAEL) , B : LGECB(COLOMBIA) LOCA. NO. PART NO. B DESCRIPTION SPECIFICATION 3701RM0168A O NET ASSEMBLY SPK LHS-25SCS NET ASSY 6400GSMB02A O SPEAKER,FULLRANGE MSF-66SB30L SAMMI FULL-RANGE(G...
  • Page 53 • MODEL : LHS-25SCW A900 LOCA. NO. PART NO. DESCRIPTION SPECIFICATION 3720RMF085D PANEL,FRONT SPK LHS-25SCW MOLD S33-740-A32 5208RM0056B DUCT SPK LHS-25SCW OTHER PAPER PIPE 4766RM0097A FELT INSIDE 65 MM, OUTSIDE 85MM,THI 3701RM0060A NET ASSEMBLY SPK LHS-D6235W NET ASSY STANDA 353M050C SCREW,DRAWING BH 3.5X16 FBK 6400WSMH01A...

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