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Zenith XBV613 - DVD/VCR Combination, Service Manual

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Zenith XBV613 - DVD/VCR Combination Service Manual Download Page 103

4-25

MECHANISM TROUBLESHOOTING GUIDE

In PB mode Tape Presence
not sensed.

Is the Pinch Roller attached to
the Capstan Motor Shaft?

Check Alignment positions
(page 4-14)

Does the T/Up Reel turn?

Replace the Belt.

Is the Belt ok?

Does the Drum Motor turn?

Are there DPG, DFG Pulses?

Are the T/Up Supply Reel

Sensors ok?

Check Syscon, Circuit.

Check Syscon, Circuit.

Check Servo, Syscon.

Does the Capstan Motor turn?

Is the terminal voltage of the
Drum Motor more than 2.3V?

Replace the Drum Motor.

Is the Vcc voltage of the Drum
Motor normal?

Check the clutch and the Idler
Assembly.

YES

YES

YES

YES

YES

YES

YES

YES

NO

NO

NO

NO

NO

Is the terminal voltage of
Capstan Motor supplied more
than 4V?

Replace the Capstan Motor.

Is the Voltage supplied to the
Capstan Motor Vcc1,Vcc2 each?

YES

YES

YES

Check Servo, Power.

NO

NO

NO

E.

Summary of Contents for XBV613 - DVD/VCR Combination

Page 1: ...RY CABINET MAIN CHASSIS ELECTRICAL MECHANISM OF VCR PART REPLACEMENT PARTS LIST 1 2 3 4 5 Published March 2006 by Technical Publications Zenith Electronics Corporation 201 James Record Road Huntsville...

Page 2: ...CONTENTS SECTION 1 SUMMARY SECTION 2 CABINET MAIN CHASSIS SECTION 3 ELECTRICAL SECTION 4 MECHANISM OF VCR PART SECTION 5 REPLACEMENT PARTS LIST...

Page 3: ...UCT SAFETY SERVICING GUIDELINES FOR VIDEO PRODUCTS 1 3 SERVICING PRECAUTIONS 1 4 General Servicing Precautions Insulation Checking Prodedure Electrostatically Sensitive Devices SERVICE INFORMATION FOR...

Page 4: ...YS WHEN THE HIGH VOLTAGE IS AT THE FACTORY SPECIFIED LEVEL THE PROPER VALUE IS GIVEN IN THE APPLICABLE SCHEMATIC OPERA TION AT HIGHER VOLTAGES MAY CAUSE A FAILURE OF THE PIC TURE TUBE OR HIGH VOLTAGE...

Page 5: ...g Metal pan 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 ar...

Page 6: ...hanges Press pause key once Change will be applied when power OFF ON OPTION NTSC model doesn t have VCR option and use DVD option B F as VCR option only DVD exist PAL model has another separate VCR op...

Page 7: ...io 2 0 Vrms 1 KHz 0 dB 600 ohms RCA jack L R x 1 RF OUT Channel 3 or 4 Adjustable VCR SPECIFICATIONS Head system Four head helical scan azimuth system Timer 12 hour display type with AM PM Tape speed...

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 DVD MD DP 10C 2 3 3 Packing Accessory Section 2 4...

Page 9: ...261 261 260 452 452 452 261 465 272 273 463 463 463 463 469 274 300 250 471 469 469 288 323 324 322 470 457 286 CN501 NOTES THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIANGLE IS INTENDED TO ALERT T...

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

Page 11: ...ACCESSORY SECTION BATTERY 808 BAG 804 PACKING CASING 803 806 INSTRUCTION ASSEMBLY RF CABLE 810 CABLE ASS Y RF 801 REMOTE CONTROLLER ASSEMBLY 900 BOX 802 PACKING CASING 803 811 812 PLUG ASS Y 1WAY PLU...

Page 12: ...C BOARD 3 53 4 KEY P C BOARD 3 55 DVD PART ELECTRICAL TROUBLESHOOTING GUIDE 3 57 1 POWER CHECK FLOW 3 57 2 SYSTEM OPERATION FLOW 3 58 3 TEST DEBUG FLOW 3 59 DETAILS AND WAVEFORMS ON SYSTEM TEST AND D...

Page 13: ...nd then check the distance time difference which is from the selected A B Head point of the H SW TP signal to the starting point of the vertical synchronized signal to 6 5H 0 5H 412 s 1H 63 s PG Adjus...

Page 14: ...wer SMPS CIRCUIT No 5 3VA Replace FR101 Use the same ICW Is the FR101 Normal Is R101 Normal Is BD101 Normal NO NO NO NO NO NO NO NO NO Replace BD101 Replace R101 Is D102 normal Replace D125 Replace IC...

Page 15: ...5 Is the Q162 Base H NO NO Check the PWR CTL H signal from com YES YES YES 2 No 5 0V_D No 5 0V_T Check or Replace D125 Check the PWR CTL H signal from com Is the Vcc 5 3V sup plied to Q163 Emittor Is...

Page 16: ...65 YES YES 7 No REG 12V Check or Replace D124 NO NO Check the PWR CTL H signal from com No REG 9V Is the Vcc 12V supplied to Q164 Collector Check or Replace D124 Is the Vcc 10V sup plied to Q164 Base...

Page 17: ...o R531 Refer to SMPS 5 3VA troubleshooting Check IC501 Pins22 23 24 25 Do T UP Reel Pulses appear at the point between R556 and R536 Replace the T UP Reel Sensor RS501 Check the CST SW and the periphe...

Page 18: ...e Drum Motor 2 doesn t run Do the DFG Pulses appear at PMC01 Pin11 Replace the DRUM M or CAP M Are the foil patterns and the Components between IC501 Pin 90 and PMC01 Pin11 shorted Replace IC501 Refer...

Page 19: ...and PMC01 Pin9 shorted Does the CFG signal come into IC501 Pin87 Are the foil patterns and Components between IC501 Pin77 and PMC01 Pin9 shorted 2 SERVO CIRCUIT 3 When the Capstan Motor doesn t run NO...

Page 20: ...rking 4 OSD CIRCUIT 1 No OSD display 2 I2 C BUS CHECK No OSD or F OSD display Is 5 3V applied to IC501 Pin53 Does oscillation occur at IC501 Pins44 45 Replace IC501 The I2 C waves don t come out Does...

Page 21: ...Does the Video signal appear at the Q924 Emitter Check the SW 5V Line Power Circuit Is I2 C BUS signal applied to IC301 Pins53 54 55 Replace IC301 Check the path of the sig nal between the IC301 Pin 2...

Page 22: ...of the SW 5V Line Check the System Circuit IC501 Pin18 Check the V H S W level Refer to SYSTEM Y C BUS CHECK Trouble Shooting Is the V H S W signal applied to IC301 Pin57 Does the Rectangular waveform...

Page 23: ...IC301 Pins23 44 45 52 68 77 Does the Color signal appear at IC301 Pins41 50 Check the line of the REG 5V Line Power Circuit Replace X301 Check C342 C341 R333 Is the oscillation frequency of X301 3 58M...

Page 24: ...A A YES YES Is brightness normal Does signal appear at IC301 Pins41 50 NO Check X301 oscillation frequency YES Is the brightness signal sup plied to IC301 Pins18 Is SW 5V supplied to IC301 Pins23 44 4...

Page 25: ...IC801 Pins3 5 15 32 36 46 54 YES Check the IIC Clock and DATA at IC801 Pins37 38 YES Check the Audio of IC801 Pins78 80 YES Check the Audio of C804 C854 YES Check JK901 Check the TU701 SIF Pin13 NO Ch...

Page 26: ...pe quality Is the RF Envelope at IC801 Pin23 over 3Vp p YES Check IC801 Pin37 Data Pin38 Clock YES Do Audio Signals appear at IC801 Pin80 L CH 78 R CH YES Do Audio Signals appear at JK901 Check Power...

Page 27: ...appear at IC801 Pin6 YES Do Audio signals appear at IC301 Pin76 Normal Audio YES Do OSC signals appear at P3D02 pin5 50Vp p YES YES Check Power NO Check ports of CPM IC501 Pins71 72 Check Audio input...

Page 28: ...in 52 NO Does the Video signal appear at JK901 YES NO Check the signal flow from IC501 Pin52 to JK901 Pin Video out YES Check 33V line NO Check 5V line NO YES Does the Clock signal appear at TU701 Pin...

Page 29: ...the Tuner SiF signal at IC801 Pin57 YES Check the Audio of IC801 Pins78 80 YES Check the Signal flow from IC801 Pins78 80 to JK901 Audio out L R YES Check the Tuner SIF of TU701 Pin13 NO 1 Check the V...

Page 30: ...OTING BLOCK D124 C124 C134 R133 L124 C126 RECTIFIER SMOOTING BLOCK D123 C127 C137 L127 RECTIFIER SMOOTING BLOCK D121 C126 R136 RECTIFIER SMOOTING BLOCK D122 D125 C128 L128 C138 MOTOR VCC 14VA REG12V 8...

Page 31: ...V CONTROL V IN RF AGC NC ENABLE CLOCK DATA AFT A OUT SIF TU 30V NC V OUT 999 GND 100 AFT 732 TU V OUT 875 MOD A IN 61 MOD CTL 107 5V 26 VCR H 971 MOD VEDIO 71 IIC CLK 72 IIC DATA 781 SIF OUT 1 2 3 4 5...

Page 32: ...N DE EM PB FM EQ FM AGC CNC YNR COMB 4 21M BPF SUB CONV 39 37 36 34 26 22 21 P B PB Mode EP REC SP REC 57 V H SW 55 Y C ENA 54 Y C DATA 53 51 50 49 48 47 39 38 37 36 34 32 30 28 22 21 20 73 70 69 66 Y...

Page 33: ...2 71 80 78 A OUT R System IC801 LA72670M IC301 LA71206M AMP EQ AMP 78 4 10 A OUT R MOD OUT DATA CLOCK R P HEAD N A IN 53 ENA 55 54 5 4 6 From u COM 80 A OUT L 2 OUTPUT SELECTOR EQ 3 2 IC301 LA71206M...

Page 34: ...Fi PB B Hi Fi PB A Hi Fi REC 57 12 74 11 73 9 71 6 4 26 27 80 A OUT L A OUT R 78 3 AUDIO INPUT BLOCK NORMAL AUDIO OUT To AVCP NORMAL AUDIO IN From AVCP SIF DVD A IN L DVD AUDIO DVD A IN R AV1 A IN L...

Page 35: ...MODE S1 I Limit MODE S2 MODE S3 MODE S4 T UP Sensor T UP Reel SUP Reel CST IN Vss AMP Vss OSD Vss SYSCON Vcc SYSCON Vcc SERVO CAP PWM CTL CTL CFG CAP REV H LD CTL V ENV V H SW30 DPG D V Sync 38 39 X...

Page 36: ...D WITHOUT PERMISSION FROM THE LG ELECTRONICS CORPORATION ALL COMPONENTS SHOULD BE REPLACED ONLY WITH TYPES IDENTICAL TO THOSE IN THE ORIGINAL CIR CUIT SPECIAL COMPONENTS ARE SHADED ON THE SCHEMATIC FO...

Page 37: ...3 33 3 34 2 TU IF CIRCUIT DIAGRAM A 1 2 3 4 5 6 7 8 9 10 11 12 B C D E F G H I J K L M N O P Q R S T...

Page 38: ...3 35 3 36 3 A V CIRCUIT DIAGRAM A 1 2 3 4 5 6 7 8 9 10 11 12 B C D E F G H I J K L M N O P Q R S T...

Page 39: ...3 37 3 38 4 Hi Fi CIRCUIT DIAGRAM A 1 2 3 4 5 6 7 8 9 10 11 12 B C D E F G H I J K L M N O P Q R S T...

Page 40: ...3 39 3 40 5 JACK CIRCUIT DIAGRAM A 1 2 3 4 5 6 7 8 9 10 11 12 B C D E F G H I J K L M N O P Q R S T...

Page 41: ...6 SYSTEM CIRCUIT DIAGRAM A 1 2 3 4 5 6 7 8 9 10 11 12 B C D E F G H I J K L M N O P Q R S T 3 41 3 42...

Page 42: ...501 Pin 90 REC PB DPG DFG DPG DFG IC501 Pin 97 PB CTL OUT IC501 Pin 94 REC WAVEFORMS IC301 Waveform IC301 Pin 9 100mV 10msec DIV VV EE Main De Emphasis out IC301 Pin 12 100mV 10msec DIV PB Main De Emp...

Page 43: ...17 9 27 2 48 5 23 1 98 0 0 01 0 0 0 2 5 1 97 2 49 2 52 0 0 48 0 49 2 54 2 54 2 53 0 0 0 5 23 4 95 2 26 4 95 1 43 0 01 1 45 0 2 3 0 05 2 25 4 2 2 265 4 9 2 26 0 2 3 0 2 3 0 2 3 1 8 0 1 66 0 0 03 2 31...

Page 44: ...07 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 0 0 53 2 4 2 4 3 2 3 22 3 22 0 0 3 22 1 78 0 1 3 1 8 1 21 1 3 1 4 2 3 2 1 4 0 82 0 81 1 71 1 75 0 0 0 92 0 93 0 93 0 93 2...

Page 45: ...3 49 3 50 PRINTED CIRCUIT DIAGRAMS 1 MAIN P C BOARD TOP SIDE...

Page 46: ...3 51 3 52 2 MAIN P C BOARD BOTTOM SIDE...

Page 47: ...3 53 3 54 3 POWER P C BOARD LOCATION GUIDE NOTES Warning NOTES Parts that are shaded are critical NOTES With respect to risk of fire or NOTES electricial shock...

Page 48: ...3 55 3 56 4 KEY P C BOARD...

Page 49: ......

Page 50: ...ction working Is 3 4V present at emitter of Q121 Replace Q121 Replace IC101 Is there a DC voltage at Cathode of D105 or D107 Check FR101 No 5V Is 3 4VA section working Replace Q126 Is 5 6V present at...

Page 51: ...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 Jump to related disc reading procedure Recieve OPEN...

Page 52: ...PCBA YES Connect to PC RS232 Cable and update the FLASH memory code YES Update FLASH successfully YES A Replace power PCBA or AC transformer NO Repair or Replace Power PCBA NO Check the regulators or...

Page 53: ...connection lines between SDRAM ZR36882 and the SDRAM is damaged ZR36882 VIDEO outputs properly Check the related circuit of ZR36882 Have TV signal output Check AV cable connection to TV set Normal OU...

Page 54: ...connection line of MUTE signal NO Is SLED_S DC Level higher than 1 65V Check the related circuit of FMSO NO SLED and SLED output properly YES Check the amp circuit on motor driver Check FOCUS_S connec...

Page 55: ...tor is OK Check the related circuit on laser power transistor NO Check cable connection between transistor ouput and pick up head YES YES YES Check the related circuit on ZR36882 RFL signal Check SPIN...

Page 56: ...he FOCUS_S connection on ZR36882 and motor driver NO Check FOCUS_S signal on ZR36882 YES YES Check the TRACK_S connection on ZR36882 and motor dirver NO Check the tracking control amp circuit on motor...

Page 57: ...T END NO NO YES YES YES YES Check connection between ZR36882 Audio DAC NO Normal Audio DAC out YES Check the related circuit of Audio DAC NO Check Audio filter amplify mute circuit Communications betw...

Page 58: ...TAILS AND WAVEFORMS ON SYSTEM TEST AND DEBUGGING 1 SYSTEM 27MHz CLOCK RESET SIGNAL 1 ZR36882 main clock is at 27MH X601 FIG 1 1 3 1V 27MHz 2 ZR3682 reset is low active FIG 1 2 Reset Time 3 3VA PWR_CTL...

Page 59: ...3 66 2 SDRAM CLOCK 1 SDRAM clock is at 143MHz FIG 2 1 IC603 PIN38 CLK 143MHz Vp p 3 3V 3 TRAY OPEN CLOSE SIGNAL 1 Tray open close waveform FIG 3 1 OPEN OPEN CLOSE CLOSE LM LM...

Page 60: ...3 67 2 Tray open waveform FIG 3 2 3 Tray close waveform FIG 3 3 OPEN CLOSE LM LM OPEN CLOSE LM LM...

Page 61: ...3 68 4 SLED CONTROL RELATED SIGNAL NO DISC CONDITION FIG 4 1 5 LENS CONTROL RELATED SIGNAL NO DISC CONDITION FIG 5 1 FOCUS_S FOCUS FOCUS SLED_S DRVSB SLED SLED...

Page 62: ...3 69 6 LASER POWER CONTROL RELATED SIGNAL NO DISC CONDITION FIG 6 1 7 DISC TYPE JUDGEMENT WAVEFORM FIG 7 1 DVD DCLK 128MHz Vp p 2 2 Vmax 2 7V FACT FE SBAD VR_CD DVD_LD CD_LD...

Page 63: ...3 70 FIG 7 2 DVD FIG 7 3 CD FACT FACT FE FE SBAD SBAD...

Page 64: ...3 71 FIG 7 4 CD 8 FOCUS ON WAVEFORM FIG 8 1 DVD FE FOSO FACT FACT FACT FE SBAD...

Page 65: ...3 72 FIG 8 2 CD 9 SPINDLE CONTROL WAVEFORM NO DISC CONDITION DVD FIG 9 1 FOCUS FACT SPINDLE_S SP SP FE FACT...

Page 66: ...3 73 10 TRACKING CONTROL RELATED SIGNAL System checking FIG 10 1 DVD FIG 10 2 CD TE TRACK_S TACT TACT TE TRACK_S TACT TACT...

Page 67: ...3 74 11 RF WAVEFORM FIG 11 1 12 ZR36882 AUDIO OPTICAL AND COAXIAL OUTPUT SPDIF FIG 12 1 RFO SPDIF...

Page 68: ...3 75 13 ZR36882 VIDEO OUTPUT WAVEFORM 1 Full colorbar signal CVBS FIG 13 1 2 Y FIG 13 2 JK702 pin6 JK702 pin7...

Page 69: ...3 76 14 AUDIO OUTPUT FROM AUDIO DAC 1 AUDIO L R FIG 14 1 3 C FIG 13 3 JK702 PIN8 JK702 PIN4 5 1KHz 0DB...

Page 70: ...3 77 2 Audio Related Signal FIG 14 2 AOUT0 ABCK ALRCLK...

Page 71: ...CD_LD V C M5V HOMESW OUTSW INSW DRVSB TRACK_S FOCUS_S SLED_S SPINDLE_S VCR_DATA DVD_RESET MUTE_C CN602 HYPER_TERMINAL MC DV33 IC603 HY57V641620E SDRAM MD IC601 ZR36882ELCG DSP MPEG RF 12V 5V R L IC50...

Page 72: ...LCG MPEG DSP RF FOCUS_S TRACK_S SLED_S SPINDLE_S SPDL_SENS FACT TACT SLED LOAD 27MHz X TAL DVD_LD CD_LD VR_CD VR_DVD PICKSEL HOMESW INSW OUTSW DRVSB FLASH ROM FLASHCS MEMRD MEMWR MEMDA 0 15 MEMAD 0 19...

Page 73: ...V IN A IN_L A IN_R V OUT A OUT_L A OUT_ R Y Pb Pr COAXIAL DVD_A_L DVD_A_R OPTICAL Y C A OUT_R A OUT_R A OUT_L A OUT_L DVD_A_R DVD_A_L DVD_A_L DVD_A_R A IN_R A IN_L A IN_L A IN_ R6 Y C V_OUT_1 Y C EU1...

Page 74: ...3 81 3 82 A 1 2 3 4 5 6 7 8 9 10 11 12 B C D E F G H I J K L M N O P Q R S T CIRCUIT DIAGRAMS 1 SYSTEM CIRCUIT DIAGRAM...

Page 75: ...3 83 3 84 2 SERVO CIRCUIT DIAGRAM A 1 2 3 4 5 6 7 8 9 10 11 12 B C D E F G H I J K L M N O P Q R S T...

Page 76: ...3 85 3 86 3 AV JACK CIRCUIT DIAGRAM A 1 2 3 4 5 6 7 8 9 10 11 12 B C D E F G H I J K L M N O P Q R S T...

Page 77: ......

Page 78: ...DECK MECHANISM ADJUSTMENT Fixtures and tools for service 4 12 1 Mechanism Assembly Mode Check 4 13 2 Previous Preparation for Deck Adjustment 4 14 3 Torque Measuring 4 14 4 Guide Roller Height Adjustm...

Page 79: ...A 5 T 17 19 Arm T up 1 hook A 5 T 20 Supporter capstan Chassis Hole A 6 B 17 18 21 Belt Capstan Motor Capstan3 screws A 6 B 22 Lever F R Locking Tab A 6 B 21 22 23 Clutch Assembly D37 Washer A 6 B 24...

Page 80: ...ate the flat cable from the Drum FPC and the Capstan Motor 2 Release 3 screws S1 on the bottom side of the chassis and separate the drum assembly 3 Release the hooks H1 H2 and separate both the holder...

Page 81: ...SEMBLY OF DECK MECHANISM 4 3 B E C Plate Top Arm Assembly F L Gear Assembly Rack F L Opener Door Holder Assembly CST B H3 A B Lever Assembly S W H4 E Fig A 2 Fig A 2 1 Fig A 2 2 Fig A 2 5 Fig A 2 6 Fi...

Page 82: ...Disassembly of Gear Assembly Rack F L Fig A 2 3 1 Separate the hook H3 while leaning ahead the hook 3 after moving the gear assembly rack F L toward the arrow A direction 2 Separate the gear assembly...

Page 83: ...rm Assembly Cleaner Fig A 3 3 1 Separate the A part of Fig A 3 1 from the embossing of chassis and hold it up while turning it anti clockwise 11 Head F E Fig A 3 4 1 Separate the A part of the head F...

Page 84: ...hile holding it upward 14 Arm Assembly Tension Fig A 4 2 1 Release the spring tension the hook H7 from the arm assembly tension 2 After releasing the hook H8 of the base tension sepa rate it while hol...

Page 85: ...e 17 Opener Lid Fig A 5 2 1 Release the B part of the opener lid from the embossing of chassis 2 Disassemble the opener lid upward while turning it anti clockwise 18 Arm Assembly Pinch Fig A 5 3 1 Hol...

Page 86: ...90 deg clockwise with a driver for disassembly 21 Belt Capstan Fig A 6 2 Motor Capstan Fig A 6 3 1 Separate the belt Capstan 2 Undo 3 screws S6 on the bottom side of chassis and dis assemble it upwar...

Page 87: ...r Fig A 7 3 1 Release the hook H11 of the gear sector and then hold the gear sector upward 26 Brake Assembly Capstan Fig A 7 4 1 Release the locking tab L2 on the bottom side of the plate slider and t...

Page 88: ...assem bly P2 and the P3 are adjusted straightly and then corre spond the gear section groove A to the plate slider hole B 32 Base Assembly P2 Fig A 8 3 Base Assembly P3 Fig A 8 4 1 Disassemble the ba...

Page 89: ...se tension from the embossing of chassis 2 Hold the base tension upward while turning it anti clock wise 35 Arm assembly Idler Jog Fig A 9 2 1 Push both B C parts in Fig A 9 2 toward the arrow directi...

Page 90: ...D00 D006 4 Torque gauge adaptor Part No D09 R001 5 Post height adjusting driver Part No DTL 0005 6 Type driver 5 2 Alignment tape Part No NTSC DTN 0001 PAL DTN 0002 3 Torque gauge 600g Cm ATG Part No...

Page 91: ...frame and separate the deck assembly Check both the hole A of gear cam and the hole A of chassis correspond Fig C 1 5 Check the mode S W on the main P C board locates at a proper position as in B of t...

Page 92: ...les on the housing rail part of chassis to prevent detection of the end sensor If doing so proceeding to the stop mode is done In this status input signals of all modes can be received However operati...

Page 93: ...of oscilloscope to the RF envelope output point and the head switching output point 2 Tracking control playback Locate it at the center Set the RF output to the maximum value via the track ing contro...

Page 94: ...he A C head If it is Turn and adjust the tilt adjusting screw to ensure that the tape corresponds to the bottom guide of the P4 and recheck the tape path after pro ceeding play for 4 5 seconds 3 Where...

Page 95: ...n cutting off the REV mode CAUTIONS If the RF waveform is changed after adjusting the A C head perform fine adjustment to ensure the RF waveform is flat tened Adjustment Procedure 1 Connect the probe...

Page 96: ...ELOPE OUTPUT POINT V2 V1 V1 V1 V MAX 0 7 V1 V MAX 0 8 RF ENVELOPE OUTPUT HEAD RF SWITCHING OUTPUT POINT OSCILLOSCOPE Connection Diagram Waveform CH 2 CH 1 Checking Procedure 1 Check that locking time...

Page 97: ...VIEW Fig C 9 2 BOTTOM VIEW F E Head Video Head A C Head Pinch Roller Belt Capston Clutch Assembly A37 Fig C 9 3 Tape Transport System Pollution of Video Head or Tape Transport System Poor Sound Low S...

Page 98: ...C 9 4 Firstly try to use a cleaning tape 1 Use a cleaning patch if foreign materials are not removed with the cleaning tape due to severe dirty of the head Soak the cleaning patch in alcohol and put...

Page 99: ...Part PL 433 Yellow Gear Part PL 433 Yellow Boss Part Side Wall PL 433 Yellow Gear Part Side Application PL 433 Yellow Cam Part Side Application KG 684G Green Gear Sector Gear Cam Base Loading Gear Dri...

Page 100: ...PROTECTION MAINTENANCE AND CHECK OF VIDEO FUNCTION 4 22 Lever F R Base Tension GEAR AY P2 P3 LEVER F R Clutch Contact Part PL 433 Yellow Tension Arm Party Hinge Part PL 433 Yellow BASE TENSION PL 433...

Page 101: ...sensor Check syscon circuit NO YES YES YES YES NO NO 1 Deck Mechanism A NO NO NO No F R modes Is the present mode F R Mode Is the mode SW assembled correctly refer to Pages 4 14 Is the normal voltage...

Page 102: ...ge 4 14 Check Pinch spring Replace Drum Motor Check Servo Syscon Check the Syscon COM No cassette loading Insert the cassette Check CST Holder Assembly Is there variation for CST IN S W Output In Tape...

Page 103: ...nsors ok Check Syscon Circuit Check Syscon Circuit Check Servo Syscon Does the Capstan Motor turn Is the terminal voltage of the Drum Motor more than 2 3V Replace the Drum Motor Is the Vcc voltage of...

Page 104: ...C Board 5V YES Is there a short circuit between cassette switch and GND on main P C Board Remove the short circuit part or Replace the main P C Board NO Check Mode switch location and syscon circuit R...

Page 105: ...m Assembly Check the power of L D Motor Is the Cassette Holder Assembly assembled correctly Replace the F L Rear Rack Does the F L Gear Rack work Does the Door Opener work Does the F L Arm Assembly wo...

Page 106: ...4 28 EXPLODED VIEWS 100 A21 A23 A24 032 109 A22 054A 054 115 116 110 112 113 114 103 105 102 106 107 1 Front Loading Mechanism Section...

Page 107: ...EXPLODED VIEWS 4 29 008 011 031 079 017 032 024 406 031 021 028 029 026 A03 027 022 003 004 006 007 014 015 009 409 013 016 012 OPTIONAL PART A01 405 2 Moving Mechanism Section 1...

Page 108: ...EXPLODED VIEWS 4 30 052 517 061 056 518 052A 055 410 032 077 076 078 060 051 064 A11 A12 067 066 065 068 069 070 023 080 058 3 Moving Mechanism Section 2...

Page 109: ......

Page 110: ...ER ASSEMBLY N6 V1310MZ NA1ULZ ZENITH PANEL ASSEMBLY FRONT A43 3721R F924F PANEL ASSEMBLY FRONT VCR V1310MZ NA1ULZ ZENITH 2006 280 3720R F934E PANEL FRONT VCR V1310MZ NA1ULZ MOLD ZENITH NSP 283 3580R V...

Page 111: ...37 A12 4471R 0015A GEAR ASSEMBLY DECK MECHA P2 D37 068 4470R 0134A GEAR DECK MECHA P2 OTHER D37 NSP 069 4970R 0122A SPRING COIL D35 NSP 070 4261R 0043A ARM ASSEMBLY DECK MECHA P2 D37 NSP A22 4471R 001...

Page 112: ...80 20 F Y5V TA C105 0CQ1031Y519 CAPACITOR FIXED FILM 0 01UF D 630V 10 PE NI TP5 C106 624 087G CAPACITOR FIXED CERAMIC HIGH D HIGH VOL 68PF 1KV SMPS SAMHWA C107 0CN1030K518 CAPACITOR TUBULAR HIGH DIEL...

Page 113: ...KEC TO92 Y KTA966A Q163 0TR928009AD TRANSISTOR BIPOLARS KSA928A Y TO 92L TP SAMSUNG TO ALTERNATE Q163 0TR127709AB TRANSISTOR BIPOLARS AUK KOREA STB1277LY AT TP TO 9 ALTERNATE Q164 0TR534309BA TRANSIST...

Page 114: ...R FIXED ELECTROLYTIC 47UF SRA SS 6 3V 20 FM5 TP 5 C209 0CE4764C638 CAPACITOR FIXED ELECTROLYTIC 47UF SRA SS 6 3V 20 FM5 TP 5 C214 0CE4773C630 CAPACITOR FIXED ELECTROLYTIC 470UF SRE SE 6 3V 20 FM5 BULK...

Page 115: ...5G1 0CE1086C638 CAPACITOR FIXED ELECTROLYTIC 1000000000PF SMS SG 6 3V 20 F C612 0CE2274C638 CAPACITOR FIXED ELECTROLYTIC 220UF SRA SS 6 3V 20 FM5 TP 5 C614 0CE1074C638 CAPACITOR FIXED ELECTROLYTIC 100...

Page 116: ...AT TO 92 4 2V RESET L300 0LR0332K035 INDUCTOR RADIAL LEAD 33UH 10 TP 6 X 6 TR5 L301 0LR1000J0N5 INDUCTOR RADIAL LEAD 100UH 5 TP 3X5 TR5 L302 0LR1000K035 INDUCTOR RADIAL LEAD 100UH 10 TP 6 X 6 TR5 L30...

Page 117: ...0 Y5V F 1608 C219 0CH1104K942 CAPACITOR FIXED CERAMIC TEMP C 0 1UF 50V 80 20 Y5V F 1608 C220 0CH1104K942 CAPACITOR FIXED CERAMIC TEMP C 0 1UF 50V 80 20 Y5V F 1608 C224 0CH1103K562 CAPACITOR FIXED CERA...

Page 118: ...Y5V F 16 C514 0CH4240K412 CAPACITOR FIXED CERAMIC HIGH D 24PF 50V 5 NP0 1608 R TP C515 0CH4240K412 CAPACITOR FIXED CERAMIC HIGH D 24PF 50V 5 NP0 1608 R TP C520 0CH1223K942 CAPACITOR FIXED CERAMIC TEMP...

Page 119: ...R T C632 0CH1103K562 CAPACITOR FIXED CERAMIC TEMP C 0 01UF 50V 10 X7R X 1608 R T C633 0CH1103K562 CAPACITOR FIXED CERAMIC TEMP C 0 01UF 50V 10 X7R X 1608 R T C634 0CH1103K562 CAPACITOR FIXED CERAMIC...

Page 120: ...R TP C703 0CH1104K512 CAPACITOR FIXED CERAMIC TEMP C 0 1UF 50V 10 B 5YP 1608 R TP C704 0CH1104K512 CAPACITOR FIXED CERAMIC TEMP C 0 1UF 50V 10 B 5YP 1608 R TP C706 0CH4300K412 CAPACITOR FIXED CERAMIC...

Page 121: ...110 OHM 1 16 W 1608 5 00 D J901 6200HJC102A FILTER CIRC EMC HB 1M2012 102JT CERATECH TP 3K J902 6200HJC102A FILTER CIRC EMC HB 1M2012 102JT CERATECH TP 3K J903 6200HJC102A FILTER CIRC EMC HB 1M2012 1...

Page 122: ...OT23 ALTERNATE Q924 0TR150409AC TRANSISTOR BIPOLARS KTA1504 TP KEC GR T1 ASG C Q930 0TR387509AC TRANSISTOR BIPOLARS CHIP KTC3875S GR T1 ALG TP KE Q930 0TRON80009A TRANSISTOR BIPOLARS BC846ALT1 ON SEMI...

Page 123: ...6 8M OHM 1 16 W 5 1608 R TP R340 0RH0000C622 RESISTOR METAL GLAZED CHIP 0 OHM 1 16 W 1608 5 00 D R341 0RH0000C622 RESISTOR METAL GLAZED CHIP 0 OHM 1 16 W 1608 5 00 D R3J1 0RH0000C622 RESISTOR METAL GL...

Page 124: ...W 1608 5 00 D R550 0RH2200C622 RESISTOR METAL GLAZED CHIP 220 OHM 1 16 W 1608 5 00 D R553 0RH2200C622 RESISTOR METAL GLAZED CHIP 220 OHM 1 16 W 1608 5 00 D R554 0RH1004C622 RESISTOR METAL GLAZED CHIP...

Page 125: ...16 W 1608 1 00 D R612 0RH0752C422 RESISTOR METAL GLAZED CHIP 75 OHM 1 16 W 1608 1 00 D R613 0RJ3920C477 RESISTOR METAL GLAZED CHIP 392 OHM 1 16 W 1 1608 R TP R614 0RH0752C422 RESISTOR METAL GLAZED CH...

Page 126: ...608 5 00 D R805 0RH4702C622 RESISTOR METAL GLAZED CHIP 47K OHM 1 16 W 1608 5 00 D R806 0RH6801C622 RESISTOR METAL GLAZED CHIP 6 8K OHM 1 16 W 1608 5 00 D R807 0RH5602C622 RESISTOR METAL GLAZED CHIP 56...

Page 127: ...S 366AGMGMRMY B OASIS UNIVER MS501 6600JR3002D SWITCH MODE SSS 51MD 3 SHINMEI 5VDC 1MA D3 MS501 6600JR3002E SWITCH MODE MMS01080ZMBO MIC 5VDC 1MA D37 ALTERNATE PMC01 6630BK01612 CONNECTOR CIRC BOARD T...

Page 128: ...R DVD DP 6 DP 8 FRONT RIGHT 20 012A 5040R 0110A RUBBER DVD REAR DP8 RIGHT 20 OTHER BL PWB PCB ASSEMBLY TOTAL A50 6871R 7861C PWB PCB ASSEMBLY TOTAL 05 LGEDI P COMBI ZORAN W O DIV CN501 6631R E007T CON...

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