Memorex MVR-4040A, Service Manual

Page 1: ...SERVICE MANUAL Design and specifications are subject to change without notice MVR4040A ORIGINAL MFR S VERSION A VIDEO CASSETTE RECORDER...

Page 2: ...eplaced should be used the part which has the same character Especially as to the important parts for safety which is indicated in the circuit diagram or the table of parts as a mark the designated pa...

Page 3: ...M CONTROL SERVO TUNER HIFI OPERATION POWER PRINTED CIRCUIT BOARDS SYSCON OPERATION DECK SYSCON OPERATION SCHEMATIC DIAGRAMS Y C AUDIO CCD HEAD AMP SYSTEM CONTROL SERVO TUNER POWER OPERATION HIFI DECK...

Page 4: ...pe Width 12 65mm 1 2 Inch G 9 Tape Speed NTSC or PAL M PAL or SECAM SP 33 35 mm sec SP 23 39 mm sec LP 16 67 mm sec LP 11 69 mm sec SLP 11 12 mm sec G 10 Recording Playback Time NTSC or PAL M at SP Mo...

Page 5: ...ector Yes G I K No G 20 Stereo Dual TV Sound Yes NICAM GERMAN USA JAPAN No G 21 Tuner Sound Muting Yes No G 22 Video Signal Input Level 1 Vp p 75 ohm Output Level 1 Vp p 75 ohm S N Ratio 50 dB Weighte...

Page 6: ...O NZ HOMOLO SABS GOST NOM AS3159 DENTORI UNE NONE Radiation FCC DOC PTT CE SEV SABA SI NZ HOMOLO UNE CNS CISPR13 DENTORI AS NZS NONE G 35 Temperature Operation 5 C 40 C Storage 20 C 60 C G 36 Operatin...

Page 7: ...y Stop FF Rew Rec OTR Pause T Rec Symbol CH AV Clock Memory Pin Code Tape Counter Index Tracking Tape Speed Hi Fi G 42 OSD Language Eng Ger Fre Spa Ita Por Jan OSD Language Setting Eng Ger Fre Spa Ita...

Page 8: ...aning Index Search Auto Tracking CH Auto Set Up Auto Clock ATS VIDEO PLUS SHOWVIEW G CODE PDC HQ VHS Standard High Quality VPS Auto Power On Auto Play Auto Rewind Auto Eject Auto Power Off Premiere Ca...

Page 9: ...C OTR Auto Tracking Call Clock Counter Jog Shuttle Menu Zero Return Dial JOG TV VCR Counter Reset Ring Shuttle Timer Rec Audio Select One Touch Playback Audio Dubbing TV Monitor Input Select Skip Sear...

Page 10: ...llowing connectors CP1001 CP1002 CP1003 CP4001 CP4002 and CP4003 Remove the Deck Chassis in the direction of arrow 1 2 3 4 Bottom Plate Deck Chassis Fig 1 1 1 2 FLAP Refer to Fig 1 2 1 2 Open Flap to...

Page 11: ...4 CASSETTE HOLDER ASS Y Refer to Fig 2 4 Move the Cassette Holder Ass y to the front side Push the Locker R to remove the Cassette Side R Remove the Cassette Side L 1 2 3 Main Chassis Main Chassis Ca...

Page 12: ...upports 2 and remove the Tension Band Ass y Unlock the support 3 and remove the Tension Holder Remove the SS Brake Spring Remove the SS Arm Brake 1 2 3 4 5 6 7 8 1 2 1 Loading Motor Ass y Link Lever M...

Page 13: ...Remove the FE Head 1 2 1 FE Head The FE Head is not installed on the Video Cassette Player Fig 2 14 NOTE Take care not to damage the gears of the S Reel and T Reel The Polyslider Washer may be remaine...

Page 14: ...emove the 3 screws 2 Remove the Cylinder Unit Ass y 1 2 3 When you install the Cylinder Unit Ass y tighten the screws from 1 to 3 in order while pulling the Ass y toward the left front direction NOTE...

Page 15: ...Remove the LED Reflecter Remove the Loading Arm S Ass y and Loading Arm T Ass y Remove the Loading Gear S and Loading Gear T Remove the Loading Gear Spring When you install the Loading Arm S Ass y Loa...

Page 16: ...op Frequency Generator Front Loading Switch Frequency Modulation Frequency Sub Carrier Forward Generator Ground High Pass Filter I K L M N O P R S H SW Hz IC IF IND INV KIL L LED LIMIT AMP LM LDM LP L...

Page 17: ...or Separation Transistor Tracking Trick Playback Test Point Unregulated Volt Voltage Controlled Oscillator Video Intermediate Frequency Vertical Pulse Voltage Display Video Playback Variable Resistor...

Page 18: ...s for the normal servicing While pressing the CH UP key on the set press the FF key on the set for more than 2 seconds While pressing the CH UP button on the set press the STOP button on the set for m...

Page 19: ...with the tape Clean the rubber and parts which the rubber touches Replace when rolling becomes abnormal Clean the Head C3 1 CONFIRMATION OF USING HOURS PLAY REC total hours can be checked on the FIP...

Page 20: ...zontally Clean the full erase head in the same manner Refer to the figure below Audio Control Head 2 TAPE RUNNING SYSTEM When cleaning the tape transport system use the gauze moistened with isopropyl...

Page 21: ...e FF key on the set for more than 2 seconds ADDRESS and DATA should appear as FIG 1 ADDRESS DATA 4 5 6 7 8 9 The unit will now have the correct DATA for the new MEMORY IC Fig 1 ADDRESS is now selected...

Page 22: ...odel JG001T X Value Adjustment For 2 heads model JG001B Monoscope 6KHz For 4 heads model JG001I Color Bar 1KHz For 4 heads model JG001P Hi Fi Audio For 4 heads Hi Fi model JG001S X Value Adjustment Fo...

Page 23: ...djustment Jig JG024A A Cut Position Fig 1 2 B B Tension Adjust 1 3 CONFIRMATION OF PLAYBACK TORQUE AND BACK TENSION TORQUE DURING PLAYBACK Load a video tape T 120 recorded in standard speed mode Set t...

Page 24: ...justed precisely at the factory Adjustment is not necessary as usual When you replace the parts of the tape running mechanism because of long term usage or failure the confirmation and adjustment are...

Page 25: ...he Guide Roller Refer to item 2 1 Confirm and adjust the Audio Control Head Refer to item 2 2 Connect CH 1 of the oscilloscope to TP4001 CH 2 to TP1002 and CH 3 to HOT side of Audio Out Jack Playback...

Page 26: ...MECHANISM ADJUSTMENT PARTS LOCATION GUIDE 5 6 7 8 9 10 1 2 3 4 1 Tension Adjust 2 Tension Arm 3 Guide Roller 4 P1 Post 5 Audio Control Head 6 7 8 9 10 X value adjustment driver hole P4 Post T Brake S...

Page 27: ...ONS MODE PLAYBACK Input Signal Alignment Tape JG001B INSTRUCTIONS 1 2 3 4 Connect CH 1 on the oscilloscope to TP4002 and CH 2 to TP4201 Playback the alignment tape JG001B Press and hold the Tracking A...

Page 28: ...D2 2 2 ELECTRICAL ADJUSTMENT PARTS LOCATION GUIDE SYSCON PCB TU6001 T501 ELECTRICAL ADJUSTMENTS J4201 TP1002 TP4001 J4203 TP1001 TP4201...

Page 29: ...AGC AMP KIL FM AGC DELAY PB FM EQ PB PHASE EQ P R C LPF GCA B UP AMP ACC AMP Main CONV 3 58M BPF2 AUTO BIAS P R KIL B D PB AMP 3 58M BPF1 DOUBLE LIM FM DEM SUB LPF V I CONV P R Y LPF YNR COMB N L DEE...

Page 30: ...1004 2 3 4 1 2 3 4 1 Q1003 SW MICRO MOTOR CAPSTAN DD UNIT DECK BLK AT 5V H AMP SW 29 TRICK_PB H EE H DUMMY_V SYNC C ROTARY SP LP EP H H SW AUDIO_MUTE H REC EE PB H AMP_SW ENV DET V REC ST H 56 14 CV I...

Page 31: ...24 SYSCON SERVO HIFI 2 22 RF_CONV_A OUT 3 6 12 11 AUDIO_OUT_L TV VCR SYSCON SERVO 16 P CON 12V HIFI FRONT JACK J4203 2 4 FRONT_V_IN TUNER_V E 5 E 6 4 14 13 4 P CON 5V 32V TU_P CON 5V 6 7 Y C AUDIO CCD...

Page 32: ...W RF_CONV_A OUT TUNER_A AUDIO_MUTE H V REC_ST H HIFI_ENV DET IIC_CLK IIC_DATA AUDIO_OUT_R ST_SELECT FRONT_A_IN L FRONT_A_IN R HF2 HF_COM FSC HF1 FROM_NORMAL_A TO_NORMAL_A TUNER SYSCON SERVO Y C AUDIO...

Page 33: ...CP601 CP651 SYSCON SERVO TU_P CON 5V P CON 5V P CON 12V 32V Q502 Q511 Q503 Q510 POWER_FAIL AC SYSCON SERVO CONTROL PHOTO COUPLER SW T501 9 10 6 4 5 IC501 KIA431 VOLTAGE CTL 1 2 PHOTO COUPLER L501 AC...

Page 34: ...12 D1007 IC1003 W103 W102 D519 W037 W036 Q1003 R1003 W002 W001 R501 L4007 W013 W010 W012 W005 W030 W100 SW660 C5501 R4033 R1026 R1027 R1009 R1005 W092 W093 R1004 R1008 W078 W066 D1008 W097 R4201 R4207...

Page 35: ...1044 R1045 R1042 R1048 C1015 R1035 R1033 R1036 R1038 R1037 R1034 R4021 R4069 R4068 R4067 R1024 R1023 R4211 R4210 C5503 R5503 C1009 C1008 C1010 C1011 C1004 R1006 C1033 C1025 C1023 R1051 C1019 C1021 R40...

Page 36: ...60 61 62 63 64 65 66 67 68 69 7 70 71 72 73 74 75 76 77 78 79 8 80 81 82 83 84 85 86 87 88 89 9 90 91 92 93 94 95 96 97 98 99 TUNER VIDEO SIGNAL CP4002 52044 0645 1 2 3 4 5 6 CP4001 TOC C09X A1 1 2 3...

Page 37: ...IC_CLK AFT S CURVE AUDIO_OUT_MUTE_L TV VCR VIDEO_OUT TUNER_L POWER_FAIL POWER_FAIL AC MODEVCC POWER_ON L AT 5V M CON P CON 5V AT 5V AT 12 6_V 4FSC C SYNC GND F R V REC_ST H AUDIO_MUTE H GND LDM F LDM...

Page 38: ...5 10K R4204 10K R4212 390 R4206 390 R4209 75 R6009 1K R6005 22K R6006 10K R4211 2 7K R4207 2 7K R6007 330 R6002 10K R6001 22K R6008 1K R4210 100 C6001 22P CH C6009 0 01 B C6004 0 1 F C4204 470P B C601...

Page 39: ...E ETANT LES PIECES REPAREES PAR UN ATTENTION R512 33K 2W R511 68 1W R514 1 1W W820 W831 Q502 2SD734 CONTROL Q503 2SC4160 OEC YAC11 SWITCHING Q512 2SD734 P CON 12V SW Q509 2SD1246 P CON 5V SW Q514 2SD7...

Page 40: ...TIC DIAGRAM IS THE LATEST AT THE TIME DURING PLAYBACK MEASURED WITH THE DIGITAL TESTER NOTE THE DC VOLTAGE AT EACH PART WAS HEATER_DC P11 P10 1G 2G 3G 4G 5G 6G 7G P9 P8 P7 P6 P5 P4 P3 P2 P1 P1 P2 P3 P...

Page 41: ...TIME DURING PLAYBACK MEASURED WITH THE DIGITAL TESTER NOTE THE DC VOLTAGE AT EACH PART WAS FSC P CON 5V IIC_CLK P CON 5V TUNER_A IIC_DATA AUDIO_MUTE H FRONT_A_IN R FRONT_A_IN L AUDIO_OUT R AUDIO_OUT L...

Page 42: ...ME DURING PLAYBACK MEASURED WITH THE DIGITAL TESTER NOTE THE DC VOLTAGE AT EACH PART WAS DESCRIBED IN PARTS LIST ONLY CRITICAL FOR SAFETY USE ONES ARE SINCE THESE PARTS MARKED BY CAUTION DANS LA NOMEN...

Page 43: ...CK DATA BM PB 5V NC NC TU 32V IF TP IF OUT A IN V IN A IN MB CH CONTROL CH MB V IN CONTROL NC SIF OUT SIF OUT AFT A OUT AFT CD4001 FFC CD1001 CD1002 CD651 FFC FFC CP1001 H5002 FULL ERASE HEAD ASS Y CP...

Page 44: ...ematic diagram NOTE SYSCON SERVO 3 PB 200mV 1ms div 8 PB 1V 0 5ms div 13 PB 1V 0 2s div Y C AUDIO CCD HEAD AMP 1 PB 1V 0 2ms div 2 POWER ON 100mV 0 1 s div 4 PB 200mV 0 5ms div 5 REC 20V 5 s div 6 PB...

Page 45: ...WAVEFORMS 16 PB 1V 5ms div HIFI H 2...

Page 46: ...ODED VIEW I 1 618 702 702 702 702 619 620 621 705 703 703 703 704 PCB010 SYSCON PCB ASS Y TU6001 J4201 T501 611 612 614 613 616 617 609 PCB270 OPERATION PCB ASS Y 606 603 608 602 615 601 605 604 608 6...

Page 47: ...8 512 314 508 313 369 502 H5002 511 509 329 330 502 502 PCB550 DECK PCB ASS Y 303 AA AD AD AD AD AA AD AD AA AA AB AB AD AD BA AA AA 352 503 503 367 501 356 317 370 M101 309 355 Applying positions AA...

Page 48: ...AA AD AD AA AA AA AA AA AC AA 510 307 354 326 327 322 513 350 308 337 AA 325 AD AA AD NOTE Applying positions AA AB AC AD and BA for the grease or oil are displayed for this section Check if the corre...

Page 49: ...53WUA0051 SPRING EARTH HEAD AMP 614 753WSA0124 SHIELD COVER HEAD AMP 615 735WPDA183 BUTTON FRAME 616 755WPA0015 PLATE COVER POWER 617 85OP700036 HOLDER EOT SENSOR 618 702WSB0015 CABINET TOP 619 722A08...

Page 50: ...1510398030 CAPSTAN DD UNIT F2QSB02 M2003 1589311005 MICRO MOTOR F2OEL82 320 85OA400178 PINCH ROLLER LEVER ASS Y PCB550 A4C831B550 DECK PCB ASS Y VE8851 321 85OA600188 BRAKE T ASS Y S Q101 0000700320 T...

Page 51: ...TKY 21DQ04N TA2B1 J4201 0602411006 JACK RCA JPJ4311 011432 D523 D2LXE65800 DIODE SILICON 1N4005E G23 J4203 0607431012 JACK RCA 3 5 LPR1251 0500 D524 D97U03301B DIODE ZENER MTZJ33B T 77 SWITCHES D528 D...

Page 52: ...U6001 0162600016 RF UNIT TMDH2 020A V651 096779R005 TUBE FLUORSCENT DISPLAY 7 MT 201GA X1001 100CT01002 CRYSTAL HC 49 U S 10MHz X4001 100CF3R512 CRYSTAL HC 49 U 3 579545MHz RESISTOR RC CARBON RESISTOR...

Page 53: ...O R NO SPEC NO M4C9 34B B994002...

Page 54: ...SERVICE MANUAL MVR4040A VIDEO CASSETTE RECORDER B A MFR S VERSION LA71077AM MPB IC4001 REVISION 1 MFR S VERSION B Please file this revision with the original version LA71077BM MPB...

Page 55: ...RC 27K OHM 1 8W R903N8333J RC 33K OHM 1 8W R4202 R001T6680J RC 68 OHM 1 6W R001T6750J RC 75 OHM 1 6W PCB010 A4C934B01A SYSCON PCB ASS Y VM9170A A4C934B01B SYSCON PCB ASS Y VM9170A SYSCON PCB s are in...