NAD T515AH Service Manual
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NAD T515AH Service Manual

NAD T515AH Service Manual

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© NAD 2007
T515AH/
T515AHT
NAD ELECTRONICS INTERNATIONAL
DVD VIDEO PLAYER
TORONTO

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Summary of Contents for NAD T515AH

  • Page 1 © NAD 2007 T515AH/ T515AHT NAD ELECTRONICS INTERNATIONAL DVD VIDEO PLAYER TORONTO...
  • Page 2 CONTENTS SECTION 1 ..SUMMARY SECTION 2 ..CABINET & MAIN CHASSIS SECTION 3 ..ELECTRICAL SECTION 4 ..REPLACEMENT PARTS LIST...

  • Page 3: Table Of Contents

    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 SERVICE INFORMATION FOR EEPROM ................1-5 SPECIFICATIONS ........................1-6...

  • Page 4: Product Safety Servicing Guidelines For Video Products

    PRODUCT SAFETY SERVICING GUIDELINES FOR VIDEO PRODUCTS CAUTION : DO NOT ATTEMPT TO MODIFY THIS PRODUCT IN ANY WAY, SUBJECT : X-RADIATION NEVER PERFORM CUSTOMIZED INSTALLATIONS WITHOUT MANUFAC- 1. BE SURE PROCEDURES AND INSTRUCTIONS TO ALL SERVICE PER- TURER’S APPROVAL. UNAUTHORIZED MODIFICATIONS WILL NOT ONLY SONNEL COVER THE SUBJECT OF X-RADIATION.

  • 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: Service Information For Eeprom

    SERVICE INFORMATION FOR EEPROM POWER ON DETECT NEW EEPROM DVD LOGO Status (NO Disk status) (OPTION EDIT SCREEN) NAME OPT 1 Remotecontrol OPT 2 Pause key-->1-->4-->7-->2 in order. OPT 3 OPT 4 OPT 5 OPT 6 Press number 0~9, Press charater OPT 7 A~F (1~6 for a while) OPT 8...

  • Page 7: Specifications

    SPECIFICATIONS • GENERAL Power requirements Power requirements: AC 120V, 60 Hz NTSC Region 1, 200-240 50/60 Hz PAL Region 2 Power consumption 10 W Dimensions (approx.) 435 x 45 x 250 mm (W x H x D) with feet and RCA plugs Weight (approx.) 2 kg (4.4 lb) Operating temperature...
  • Page 8 SECTION 2 CABINET & MAIN CHASSIS CONTENTS EXPLODED VIEWS ........................2-2 1. Cabinet and Main Frame Section ...................2-2 2. Deck Mechanism Section(DP-10) ...................2-3 3. Packing Accessory Section ....................2-4...

  • Page 9: Exploded Views

    EXPLODED VIEWS 1. Cabinet and Main Frame Section NOTES) THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIANGLE IS INTENDED TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF IMPORTANT SAFETY INFORMATION IN SERVICE LITERATURE. OPTIONAL PART...

  • Page 10: Deck Mechanism Section(Dp-10)

    2. DECK MECHANISM SECTION(DP-10)

  • Page 11: Packing Accessory Section

    3. PACKING ACCESSORY SECTION RF CABLE 810 CABLE SET ASS’Y PLUG ASS’Y 1WAY(YELLOW) PLUG ASS’Y 2WAY BATTERY PLUG ASS’Y 1WAY(BLACK) REMOCON OWNER’S MANUAL PACKING SHEET PACKING PACKING DISC BOX CARTON OPTIONAL PARTS...
  • Page 12 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 4. Blank page..........................3-10 DETAILS AND WAVEFORMS ON SYSTEM TEST AND DEBUGGING ....3-11 1. SYSTEM 27MHZ CLOCK, RESET SIGNAL................3-11 2.

  • Page 13: Electrical Troubleshooting Guide

    ELECTRICAL TROUBLESHOOTING GUIDE 1. POWER CHECK FLOW No 5V No 3.4VA. Is 3.4VA section working? Is 3.4VA section working? Is 5.6V present at collector Is 3.4V present at emitter No 3.4VA of Q126? of Q121? Replace Q126. Check FR101 Replace Q121. Check D105/D106/D107/ Is there a DC voltage at Cathode of D105 or D107?

  • Page 14: System Operation Flow

    2. SYSTEM OPERATION FLOW Power On 1. 186 CPU 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.

  • Page 15: Test & Debug Flow

    3. TEST & DEBUG FLOW TEST Check the AC Voltage Replace power PCBA or AC transformer. Power PCBA(110V or 220V) Switch on the Power PCBA Is the DC Voltage outputs OK? Repair or Replace Power PCBA (5V, 3.3V, 12V, 5.6V MOTOR) Make sure the main PCBA don't short on VCCs and switch it on.
  • Page 16 RESET or Power On. Check connection lines between Flash Memory operates Show LOGO? FLASH & ZR336888 and the FLASH properly? access time whether is suitable or not. Check connection lines SDRAM works properly? between SDRAM & ZR36888 and the SDRAM is damaged. ZR36882 VIDEO outputs Check the related circuit of properly?
  • Page 17 Does the SLED move to Motor Driver MUTE Pin is Check the connection line of inner side when it is at outter High? MUTE signal. position? Is SLED_S DC Level higher Check the related circuit of than 1.65V? FMSO. SLED+ and SLED- output Check the amp circuit on properly? motor driver.
  • Page 18 Check the laser power circuit Laser turns on when LD_DVD or LD_CD on ZR36888 and connecting reading disc? output properly? to power transistor. Collector voltage of power Check the related circuit on transistor is OK? laser power transistor Check cable connection between transistor ouput and pick-up head.
  • Page 19 Proper signals on A,B,C,D Check connections between Focus ON OK? of ZR36888 ZR36888 and pick-up head. Check the FOCUS_S Check FE signal on connection on ZR36888 ZR36888 and motor driver. Check FOCUS_S signal on ZR36888 Normal TE Signal on Check the related Track On OK? ZR36888? circuit on ZR36888...
  • Page 20 Normal Audio output Audio DAC received Check connection between when disc playback? correct data stream? ZR36888 & Audio DAC. Check the related circuit of Normal Audio DAC out? Audio DAC. Check Audio filter, amplify, mute circuit. Communications between Normal IR.VFD & Front Check communication lines IR.VFD Front panel key &...

  • Page 22: Details And Waveforms On System Test And Debugging

    DETAILS AND WAVEFORMS ON SYSTEM TEST AND DEBUGGING 1. SYSTEM 27MHz CLOCK, RESET SIGNAL 1) ZR36882 main clock is at 27MH(X601) 3.1V,27MHz FIG 1-1 2) ZR3682 reset is low active 3.3VA PWR_CTL RESET Reset Time FIG 1-2 3-11...

  • Page 23: Sdram Clock

    2. SDRAM CLOCK 1) SDRAM clock is at 143MHz CLK=143MHz,Vp-p=3.3V IC603 PIN38 FIG 2-1 3. TRAY OPEN/CLOSE SIGNAL 1) Tray open/close waveform OPEN CLOSE OPEN CLOSE FIG 3-1 3-12...
  • Page 24 2) Tray open waveform OPEN CLOSE FIG 3-2 3) Tray close waveform OPEN CLOSE FIG 3-3 3-13...

  • Page 25: Sled Control Related Signal(No Disc Condition)

    4. SLED CONTROL RELATED SIGNAL(NO DISC CONDITION) SLED_S DRVSB SLED+ SLED- FIG 4-1 5. LENS CONTROL RELATED SIGNAL(NO DISC CONDITION) FOCUS_S FOCUS+ FOCUS- FIG 5-1 3-14...

  • Page 26: Laser Power Control Related Signal(No Disc Condition)

    6. LASER POWER CONTROL RELATED SIGNAL(NO DISC CONDITION) DCLK = 128MHz, Vp-p=2.2, Vmax=2.7V VR_CD DVD_LD CD_LD FIG 6-1 7. DISC TYPE JUDGEMENT WAVEFORM FACT+ SBAD FIG 7-1(DVD) 3-15...
  • Page 27 FACT+ SBAD FIG 7-2 (DVD) FACT+ SBAD FIG 7-3 (CD) 3-16...

  • Page 28: Focus On Waveform

    FACT+ SBAD FIG 7-4 (CD) 8. FOCUS ON WAVEFORM FOSO FACT+ FACT- FIG 8-1 (DVD) 3-17...

  • Page 29: Spindle Control Waveform

    FOCUS FACT+ FACT- FIG 8-2 (CD) 9. SPINDLE CONTROL WAVEFORM(NO DISC CONDITION) SPINDLE_S FIG 9-1 (DVD) 3-18 3-18...

  • Page 30: Tracking Control Related Signal(System Checking)

    10. TRACKING CONTROL RELATED SIGNAL(System checking) TRACK_S TACT+ TACT- FIG 10-1 (DVD) TRACK_S TACT+ TACT- FIG 10-2 (CD) 3-19...

  • Page 31: Rf Waveform

    11. RF WAVEFORM FIG 11-1 12. ZR36888 AUDIO OPTICAL AND COAXIAL OUTPUT(SPDIF) SPDIF FIG 12-1 3-20...

  • Page 32: Zr36888 Video Output Waveform

    13. ZR36888 VIDEO OUTPUT WAVEFORM 1) Full colorbar signal(CVBS) JK701 pin3 FIG 13-1 2) Y JK701 pin9 FIG 13-2 3-21...

  • Page 33: Audio Output From Audio Dac

    3) C JK701 PIN10 FIG 13-3 14. AUDIO OUTPUT FROM AUDIO DAC 1) AUDIO L/R 1KHz 0DB JK702 PIN2, 4 FIG 14-1 3-22...
  • Page 34 2) Audio Related Signal AOUT0 ABCK ALRCLK FIG 14-2 3-23...

  • Page 35: Block Diagrams

    BLOCK DIAGRAMS 1. OVERALL BLOCK DIAGRAM CVBS RESET D. DATA D.CLK D.ENA 3-24...

  • Page 36: Power(Smps) Block Diagram

    2. POWER(SMPS) BLOCK DIAGRAM TRANS SWITCHING IC AC100~240V FILTER RECTIFIER 3-25...

  • Page 37: Servo Block Diagram

    3. SERVO BLOCK DIAGRAM 3-26...

  • Page 38: Mpeg & Memory Block Diagram

    4. MPEG & MEMORY BLOCK DIAGRAM 3-27...

  • Page 39: Video & Audio Block Diagram

    5. VIDEO & AUDIO BLOCK DIAGRAM 3-28...

  • Page 40: 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 NAD ELECTRONICS CORPORATION. ALL PERFORMANCE IMPROVEMENT CHANGES INTO COMPONENTS SHOULD BE REPLACED ONLY WITH THE SET IS NOT DELAYED UNTIL THE NEW SERVICE TYPES IDENTICAL TO THOSE IN THE ORIGINAL CIR- LITERATURE IS PRINTED.

  • Page 41: System(Main) Circuit Diagram

    2. SYSTEM(MAIN) CIRCUIT DIAGRAM 3-31 3-32...

  • Page 42: Servo Circuit Diagram

    3. SERVO CIRCUIT DIAGRAM 3-33 3-34...

  • Page 43: Av/Jackcircuit Diagram

    4. AV/JACK CIRCUIT DIAGRAM 3-35 3-36...

  • Page 45: Timer Circuit Diagram

    6. TIMER CIRCUIT DIAGRAM 3-39 3-40...

  • Page 47: Circuit Voltage Chart

    • CIRCUIT VOLTAGE CHART MODE MODE MODE MODE MODE MODE MODE MODE MODE MODE MODE (PLAY) (PLAY) (PLAY) (PLAY) STOP PLAY STOP PLAY STOP PLAY STOP PLAY STOP PLAY STOP PLAY STOP PLAY STOP PLAY STOP PLAY condenser condenser PIN NO. PIN NO.

  • Page 48: Printed Circuit Diagrams

    PRINTED CIRCUIT DIAGRAMS 1. MAIN P.C.BOARD ( TOP VIEW ) ( BOTTOM VIEW ) 3-45 3-46...

  • Page 49: Key P.c.board

    2. KEY P.C.BOARD 3. TIMER P.C.BOARD ( TOP VIEW ) ( TOP VIEW ) ( BOTTOM VIEW ) ( BOTTOM VIEW ) 3-47 3-48...

  • Page 50: Smps P.c.board

    4. SMPS P.C.BOARD NOTES) Warning NOTES) Parts that are shaded are critical NOTES) with respect to risk of fire or NOTES) electricial shock. 3-49 3-50...
  • Page 51 Location Part Number Description Quantity 3300R-0547A Plate 5016H-1016B Magnet 4860R-0021A Clamp 6850R-JW24Y Cable,FFC 5040R-0083A Damper 4400R-0010A Belt 4470R-0154A Gear 4681R-A015A Motor,Unclassified 6871R-4067A PCB Assembly 4470R-0176A Gear 4974R-0066A Guide 3210R-M007A Frame 3040R-M062A Base 4681R-B009C Motor,Unclassified 4470R-0179A Gear 4470R-0178A Gear 3390R-0029A Tray 4470R-0180A Gear 4370R-0136A...

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