JVC XV-N350B Service Manual Download Page 14 | Manualshive

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ELECTRICAL TROUBLESHOOTING GUIDE

Power on

1. 8032 initializes SERVO,DSP & RISC registers
2. Write RISC code to SDRAM
3. Reset RISC

Show LOGO

Tray close to closed position

SLED moves to inner position

1. Judge whether have disc and disc type
2. Jump to related disc reading procedure

1. Execute pressed Key & IR key
2. System operation routine loop

1. Stop playback & open Tray
2. Display tray open message & LOGO

NO

YES

YES

NO

YES

YES

NO

NO

2. SYSTEM OPERATION FLOW

Tray closed ?

SLED at inner side ?

Recieve OPEN/CLOSE Key?

Receive CLOSE Key?

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Summary of Contents for XV-N350B

Page 1: ...MODELS XV N350B XV N352S SERVICE MANUAL P NO AFN31629394 MARCH 2007 MODELS XV N350B XV N352S DVD VIDEO PLAYER ...

Page 2: ...CONTENTS SECTION 1 SUMMARY SECTION 2 CABINET MAIN CHASSIS SECTION 3 ELECTRICAL SECTION 4 MECHANISM DP 11 SECTION 5 REPLACEMENT PARTS LIST ...

Page 3: ...RODUCT SAFETY SERVICING GUIDELINES FOR DVD PRODUCTS 1 3 SERVICING PRECAUTIONS 1 4 GENERAL SERVICING PRECAUTIONS INSULATION CHECKING PRODEDURE ELECTROSTATICALLY SENSITIVE ES DEVICES SERVICE INFORMATION FOR EEPROM 1 5 SPECIFICATIONS 1 6 ...

Page 4: ...g 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 or damaged insulation including the AC cord and replace if necessary 5 No lead or component should touch a high current ...

Page 5: ...els 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 t...

Page 6: ...nge will be applied when power OFF ON Use arrow key F D G E to move to approprite position and make changes DVD LOGO Status NO Disk status Remotecontrol Pause key 1 4 7 2 in order MODEL XV N350B XV N352S NAME HEX OPT 1 00 OPT 2 00 OPT 3 00 OPT 4 00 OPT 5 00 OPT 6 00 OPT 7 00 OPT 8 00 DETECT NEW EEPROM OPTION EDIT SCREEN ...

Page 7: ... RCA jack x 1 SCART TO TV AUDIO OUT 2 0Vrms 1KHz 0dB 600Ω RCA jack L R x 1 SCART TO TV DIGITAL OUT COAXIAL 0 5V p p 75Ω RCA jack x 1 SCART Model only SYSTEM Laser Semiconductor laser wavelength 650nm Signal system PAL NTSC Frequency response DVD PCM 96 kHz 8Hz to 44kHz DVD PCM 48 kHz 8Hz to 22kHz CD 8Hz to 20kHz Signal to noise ratio More than 90dB ANALOG OUT connectors only Harmonic distortion Le...

Page 8: ...2 1 SECTION 2 CABINET MAIN CHASSIS CONTENTS EXPLODED VIEWS 2 2 1 CABINET AND MAIN FRAME SECTION 2 2 2 DECK MECHANISM SECTION DP 11 2 3 3 PACKING ACCESSORY SECTION 2 4 ...

Page 9: ... 460 460 250 462 A44 A 300 A26 283 261 261 260 262 320 467 465 261 D A C B 462 462 A48 A46 P101 A47 MAIN SMPS 5 1CH SCART 452 D A43 A49 CABLE1 CN903 452 280 KEY TIMER 452 A42 2 2 EXPLODED VIEWS 1 CABINET AND MAIN FRAME SECTION ...

Page 10: ...2 3 2 DECK MECHANISM SECTION DP 11 A26 A02 439 018 013 017 014 001 002 003 020 016 015B 015A 435 015 019 440 432 012A 010 439 431 435 030 024 025 036 A03 430 021 012A 012 012 026 A01 ...

Page 11: ...2 4 3 PACKING ACCESSORY SECTION 808 BATTERY 810 CABLE SET ASS Y 811 PLUG ASS Y 1WAY YELLOW 812 PLUG ASS Y 2WAY 801 OWNER S MANUAL 804 PACKING SHEET 803 PACKING 900 REMOCON 803 PACKING 802 BOX CARTON ...

Page 12: ...12 AUDIO OUTPUT FROM ZR966 3 18 CONNECTOR PICTURE 3 19 1 ALL CONNECTOR PICTURE 3 19 2 P2201 CONNECTOR PICTURE 3 20 3 P2202 CONNECTOR PICTURE 3 20 4 PW6101 CONNECTOR PICTURE 3 21 5 P6501 CONNECTOR PICTURE 3 21 6 P6602 CONNECTOR PICTURE 3 22 7 P6901 CONNECTOR PICTURE 3 22 8 P7301 CONNECTOR PICTURE 3 23 BLOCK DIAGRAMS 3 24 1 OVERALL BLOCK DIAGRAM 3 24 2 POWER SUPPLY BLOCK DIAGRAM 3 25 3 SERVO BLOCK D...

Page 13: ...S YES YES No 5V No 3 3VA Replace Q126 Check FR101 Replace Q121 YES Is there a DC voltage at cathode of D105 or D107 YES NO NO NO NO Replace IC101 1 POWER CHECK FLOW A B Check D105 D106 D107 D108 and replace Is 3 3VA section working Is 3 3VA section working Is 3 3V present at emitter of Q121 ...

Page 14: ...position SLED moves to inner position 1 Judge whether have disc and disc type 2 Jump to related disc reading procedure 1 Execute pressed Key IR key 2 System operation routine loop 1 Stop playback open Tray 2 Display tray open message LOGO NO YES YES NO YES YES NO NO 2 SYSTEM OPERATION FLOW Tray closed SLED at inner side Recieve OPEN CLOSE Key Receive CLOSE Key ...

Page 15: ...es YES NO Connect to PC RS232 cable and update the FLASH memory code 1 Check 27MHz system clock 2 Check system reset circuit 3 Check FLASH R W enable signal PRD RWR 4 Check RS232 SIGNALS 5 Check FLASH Memory related circuit NO A YES Check the AC Voltage Power PCBA 110V or 220V Update FLASH successfully Is the DC voltage outputs OK 5V 3 3V 12V 5 6V MOTOR Is 3 3V and 1 8V DC outputs normal on main P...

Page 16: ...ion to TV set NO NO YES Check the load OPEN CLOSE switch NO YES Check the Tray control IO pins on ZR966 AM5890S NO YES Check the Tray control amplifying circuit on motor driver Check the cable connection between main PCBA and loader YES YES Show LOGO Flash memory operates properly ZR966 VIDEO outputs properly Normal TROUT TRIN signals Normal TRCLOSE TROPEN signal Normal LOAD LOAD signal Does Tray ...

Page 17: ...le connect on with pick up head YES YES Motor Driver DRVSB Pin is high Is sled_s DC Level higher than 1 4V SL and SL output properly Does the SLED move to inner side when it is at outter position NO NO Check focus_s connection on ZR966 and motor dirver Proper focus_s outputs to motor driver NO Check the amp circuit on motor dirver Proper F F outputs Optical Lens has movements for searching focus B...

Page 18: ...ircuit on ZR966 SP SP output properly NO YES Check the spindle control amp circuit of motor driver Check the cable connection between spindle and main PCBA YES YES Laser turns on when reading disc DVD_LD CD_LD output properly NO Check the related circuit on laser power transistor Collector voltage of power transistor is OK Put disc in Disc ID is correct Does spindle rotate Does spindle rotate Prop...

Page 19: ...s on A B C D of ZR966 NO NO Check the track_s connection on ZR966 and motor dirver Track on OK Disc is play Properly track_s signal on ZR966 NO Check the tracking control amp circuit on motor driver T T output properly NO Check the focus_s connection on ZR966 and motor driver Check focus_s signal on ZR966 YES Check the focus control amp circuit on motor driver F F output properly D E ELECTRICAL TR...

Page 20: ...6 YES YES TEST END Check the cable connection on Front pannel Normal Audio output when disc playback Audio DAC received correct data stream Commu nications between IR VFD Front pannel key ZR966 is normally Normal IR VFD Front pannel key functions NO Check the related circuit of Audio DAC Normal Audio DAC out E ELECTRICAL TROUBLESHOOTING GUIDE ...

Page 21: ...TAILS AND WAVEFORMS ON SYSTEM TEST AND DEBUGGING 1 SYSTEM 27MHz CLOCK RESET FLASH R W SIGNAL 1 ZR966 main clock is at 27MHz X601 FIG 1 1 1 1 2 ZR966 reset is active high FIG 1 2 2 3 4 2 3 4 3 3VA PWR_CTL RESET ...

Page 22: ...3 11 3 RS232 waveform during procedure Downloading FIG 1 3 5 6 5 6 TXD RXD 4 Flash R W enable signal during download Downloading FIG 1 4 7 8 7 8 PRD IC602 PWR ...

Page 23: ...3 12 2 SDRAM CLOCK FIG 2 1 DCLK 128MHz Vp p 2 2 Vmax 2 7V IC603 3 TRAY OPEN CLOSE SIGNAL FIG 3 1 9 9 IC201 10 11 12 13 11 10 12 13 INSW OUTSW CLOSE OPEN ...

Page 24: ...DITION 5 LENS CONTROL RELATED SIGNAL NO DISC CONDITION FIG 5 1 FIG 4 1 14 15 16 17 18 19 20 SLED_S 1 9V 1 4V 1 1V DRVSB 3 3V SLED 4 2V 2 8V 1 2V SLED 4 2V 2 8V 1 5V FOCUS_S 1 5V 1 4V 1 3V FACT 3 2V 2 7V 2 2V FACT 3 2V 2 7V 2 2V 18 15 19 14 16 17 20 ...

Page 25: ...RELATED SIGNAL NO DISC CONDITION FIG 6 1 CN201 7 SPINDLE CONTROL WAVEFORM NO DISC CONDITION FIG 7 1 21 22 23 21 22 23 24 25 26 25 26 SPINDLE_S 1 4V 1 8V SP 3 6V 2 4V SP 3 6V 4 8V MDI1 0V 180mV CD_LD 3 3V 2 3V DVD_LD 3 3V 2 3V 24 ...

Page 26: ...3 15 8 FOCUS ON WAVEFORM IC201 27 28 29 FOCUS_S FF FF 28 FIG 8 2 CD FOCUS_S FF FF 27 29 FIG 8 1 DVD 27 28 29 ...

Page 27: ...3 16 9 RACKING CONTROL RELATED SIGNAL SYSTEM CHECKING 30 31 32 TRACK_S Tracking Tracking FIG 9 2 CD TRACK_S Tracking Tracking FIG 9 1 DVD 30 31 32 P2201 30 31 32 ...

Page 28: ...3 17 10 ZR966 AUDIO COAXIAL OUTPUT SPDIF 11 ZR966 VIDEO OUTPUT WAVEFORM 1 100 COLOR BAR 33 FIG 10 1 FIG 11 1 33 ...

Page 29: ...3 18 2 COMPOSITE VIDEO SIGNAL FIG 11 2 12 AUDIO OUTPUT FROM ZR966 FIG 12 1 ...

Page 30: ...3 19 CONNECTOR PICTURE 1 ALL CONNECTOR PICTURE ...

Page 31: ...3 20 P2201 MD 23PIN 2 P2201 CONNECTOR PICTURE P2202 MD 9PIN 3 P2202 CONNECTOR PICTURE ...

Page 32: ...3 21 PW6101 POWER 10PIN 4 PW6101 CONNECTOR PICTURE P6501 USB 4PIN Not used currently 5 P6501 CONNECTOR PICTURE ...

Page 33: ...3 22 P6901 TIMER 12PIN 7 P6901 CONNECTOR PICTURE P6602 HYPER TEAMINAL 4PIN P6602 DOWN LOAD 4PIN 6 P6602 CONNECTOR PICTURE ...

Page 34: ...3 23 P7301 SCART 12PIN 8 P7301 CONNECTOR PICTURE ...

Page 35: ...3 24 BLOCK DIAGRAMS 1 OVERALL BLOCK DIAGRAM ...

Page 36: ...3 25 2 POWER SUPPLY BLOCK DIAGRAM ...

Page 37: ...3 26 3 SERVO BLOCK DIAGRAM ...

Page 38: ...3 27 4 MPEG MEMORY BLOCK DIAGRAM ...

Page 39: ...3 28 5 VIDEO BLOCK DIAGRAM ...

Page 40: ...3 29 6 AUDIO BLOCK DIAGRAM ...

Page 41: ...3 30 MEMO ...

Page 42: ...ITHOUT PERMISSION FROM THE JVC ALL COMPONENTS SHOULD BE REPLACED ONLY WITH TYPES IDENTICAL TO THOSE IN THE ORIGINAL CIRCUIT SPECIAL COMPONENTS ARE SHADED ON THE SCHEMATIC FOR EASY IDENTIFICATION THIS CIRCUIT DIAGRAM MAY OCCASIONALLY DIFFER FROM THE ACTUAL CIRCUIT USED THIS WAY IMPLEMENTATION OF THE LATEST SAFETY AND PERFORMANCE IMPROVEMENT CHANGES INTO THE SET IS NOT DELAYED UNTIL THE NEW SERVICE ...

Page 43: ...3 33 3 34 2 SYSTEM MPEG CIRCUIT DIAGRAM ...

Page 44: ...3 35 3 36 3 SERVO CIRCUIT DIAGRAM ...

Page 45: ...3 37 3 38 4 AV JACK CIRCUIT DIAGRAM ...

Page 46: ...3 39 3 40 5 TIMER KEY CIRCUIT DIAGRAM ...

Page 47: ...167 0 436 0 397 168 0 812 2 36 169 0 0001 0 003 170 0 256 1 726 171 1 598 1 694 172 0 0001 0 003 173 0 806 2 097 174 0 001 1 647 175 0 002 0 93 176 0 0001 0 003 177 3 29 3 24 178 0 0001 0 199 179 0 0001 0 006 180 3 29 2 36 181 3 29 3 22 182 0 0001 1 733 183 3 29 3 25 184 0 0015 1 612 185 0 0001 0 0002 186 0 0029 2 484 187 0 0018 1 697 188 3 28 3 24 189 0 0003 0 0005 190 1 754 1 749 191 0 0002 0 00...

Page 48: ...3 43 3 44 PRINTED CIRCUIT BOARD DIAGRAMS 1 MAIN P C BOARD TOP VIEW BOTTOM VIEW ...

Page 49: ...3 45 3 46 2 KEY P C BOARD TOP VIEW BOTTOM VIEW 3 TIMER P C BOARD TOP VIEW BOTTOM VIEW ...

Page 50: ...3 47 3 48 4 SMPS P C BOARD 5 SCART P C BOARD SCART MODEL ONLY TOP VIEW BOTTOM VIEW ...

Page 51: ...3 49 3 50 MEMO MEMO ...

Page 52: ...y Disc 4 3 1 1 1 Plate Clamp 4 3 1 1 2 Magnet Clamp 4 3 1 1 3 Clamp Upper 4 3 2 TRAY DISC 4 3 3 BASE ASSEMBLY SLED 4 4 3 1 Gear Feed 4 4 3 2 Gear Middle 4 4 3 3 Gear Rack 4 4 4 RUBBER REAR 4 4 5 FRAME ASSEMBLY UP DOWN 4 5 6 BELT LOADING 4 5 7 GEAR PULLEY 4 5 8 GEAR LOADING 4 5 9 GUIDE UP DOWN 4 5 10 PWB ASSEMBLY LOADING 4 5 11 BASE MAIN 4 5 EXPLODED VIEW 1 DECK MECHANISM EXPLODED VIEW 4 7 ...

Page 53: ... Gear Rack 1 Screw 4 3 9 1 2 7 11 Rubber Rear 4 3 1 2 7 12 Frame Assembly 1 Screw Bottom 4 4 Up Down 1 2 13 Belt Loading 1 Locking Tab 4 4 1 2 13 14 Gear Pulley 4 4 1 2 13 14 15 Gear Loading 1 Locking Tab 4 4 1 2 7 12 16 Guide Up Down 4 4 13 14 1 2 13 17 PWB Assembly 1 Locking Tab Bottom 4 4 Loading 1 Hook 2Screw 1 2 7 12 13 14 15 18 Base Main 2 Locking Tabs 4 4 16 17 TOP VIEW WITH TRAY BOTTOM VIE...

Page 54: ...ounterclockwise 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 co...

Page 55: ...4 4 3 BASE ASSEMBLY SLED FIG 4 3 1 Release 4 Screw S2 2 Disconnect the FFC Connector C1 3 1 Gear Feed 3 2 Gear Middle 3 3 Gear Rack 1 Release the Scerw S3 4 RUBBER REAR FIG 4 3 FIG 4 3 ...

Page 56: ...lock the Locking Tab L4 in direction of arrow B and then separate the Gear Pulley from the Base Main 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...

Page 57: ...4 6 MEMO ...

Page 58: ...1 002 003 020 439 018 013 017 015B 015A 440 019 012 015 012 432 030 010 439 431 435 021 430 024 025 036 012A 012A 026 016 435 014 A01 A02 A03 A00 4 7 4 8 EXPLODED VIEW 1 DECK MECHANISM EXPLODED VIEW DP 11 ...

Page 59: ...4 9 4 10 MEMO MEMO ...

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