Memorex MVR4041 Service Manual Download Page 3

Page: 3 / 157

SERVICING NOTICES ON CHECKING .....................................................................................

HOW TO ORDER PARTS ..........................................................................................................

CONTENTS .................................................................................................................................

GENERAL SPECIFICATIONS ....................................................................................................

DISASSEMBLY INSTRUCTIONS

1. REMOVAL OF MECHANICAL PARTS AND P. C. BOARDS ............................................

2. REMOVAL OF DECK PARTS ............................................................................................

KEY TO ABBREVIATIONS ........................................................................................................

SERVICE MODE LIST ................................................................................................................

PREVENTIVE CHECKS AND SERVICE INTERVALS ..............................................................

SERVICING FIXTURES AND TOOLS .......................................................................................

PREPARATION FOR SERVICING .............................................................................................

MECHANICAL ADJUSTMENTS ................................................................................................

ELECTRICAL ADJUSTMENTS ..................................................................................................

BLOCK DIAGRAMS

Y/C/AUDIO/CCD/HEAD AMP .................................................................................................

SYSTEM CONTROL/DECK ....................................................................................................

TUNER .....................................................................................................................................

HI-FI/DEMODULATOR ...........................................................................................................

POWER ...................................................................................................................................

OPERATION ...........................................................................................................................

PRINTED CIRCUIT BOARDS

SYSCON/OPERATION/DECK ................................................................................................

SYSCON/OPERATION ...........................................................................................................

SCHEMATIC DIAGRAMS

Y/C/AUDIO/CCD/HEAD AMP .................................................................................................

SYSTEM CONTROL ...............................................................................................................

TUNER .....................................................................................................................................

POWER ...................................................................................................................................

OPERATION/DISPLAY ...........................................................................................................

HI-FI/DEMODULATOR ...........................................................................................................

DECK .......................................................................................................................................

INTERCONNECTION DIAGRAM ...........................................................................................

WAVEFORMS .............................................................................................................................

MECHANICAL EXPLODED VIEW .............................................................................................

CHASSIS EXPLODED VIEWS ...................................................................................................

MECHANICAL REPLACEMENT PARTS LIST .........................................................................

CHASSIS REPLACEMENT PARTS LIST ..................................................................................

ELECTRICAL REPLACEMENT PARTS LIST ...........................................................................

CONTENTS

A1-1

A2-1

A3-1~A3-6

B1-1

B2-1~B2-5

C1-1, C1-2

C2-1

C3-1

C4-1

D1-1~D1-4

D2-1, D2-2

E-1, E-2

E-3, E-4

E-5, E-6

E-7, E-8

E-9, E-10

E-11, E-12

F-1, F-2

F-3, F-4

G-1, G-2

G-3, G-4

G-5, G-6

G-7, G-8

G-9, G-10

G-11, G-12

G-13, G-14

G-15, G-16

H-1

I-1

I-2, I-3

J1-1

J2-1

J3-1, J3-2

A2-1

Summary of Contents for MVR4041

Page 1: ...SERVICE MANUAL Design and specifications are subject to change without notice MVR4041 VIDEO CASSETTE RECORDER ORIGINAL MFR S VERSION A...

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: ...OPERATION PRINTED CIRCUIT BOARDS SYSCON OPERATION DECK SYSCON OPERATION SCHEMATIC DIAGRAMS Y C AUDIO CCD HEAD AMP SYSTEM CONTROL TUNER POWER OPERATION DISPLAY HI FI DEMODULATOR DECK INTERCONNECTION D...

Page 4: ...84 Intermediate Picture FP 45 75MHz Frequency Sound FS 41 25MHz FP FS 4 50MHz Preset CH No RF Converter Output Yes Channel 3 or 4 ch Level Impedance 66dBu 75ohm Sound Selector No Stereo Dual TV Sound...

Page 5: ...e In No Kurupika Guide No One Touch Playback No Terminals Front Video Input RCA Audio Input RCA x 2 Stereo Other Terminal No Rear Video Input No Audio Input No Video Output RCA Audio Output RCA x 2 St...

Page 6: ...ause Eject Tape In Symbol Mark Yes CH AV Yes Clock Yes Repeat Yes Pin Code No Tape Counter Yes Index No Hotel Lock No Tape Speed Yes Manual Tracking Bar Setting No Hi Fi Yes S Repeat SR R SR Play No V...

Page 7: ...s UM 4 x 2 pcs Total Keys 35 Keys Keys Power Yes 1 Yes 2 Yes 3 Yes 4 Yes 5 Yes 6 Yes 7 Yes 8 Yes 9 Yes 0 Yes CH Up Yes CH Down Yes Input Select Yes Play Yes F Fwd Yes Rew Yes Pause Still Yes Stop Yes...

Page 8: ...Owner s Manual Language English Spanish w Guarantee Card No Remote Control Unit Yes Dew Cation Sheet No Video Cassette Tape No Battery No UM size x pcs UM 4 x 2 pcs Safety Tip No Toll Free Insert Shee...

Page 9: ...ion of Origin Gift Box Yes Material Single White Dimensions W x D x H mm 430x310x165 Design As Per BUYER s Description of Origin Yes Drop Test Natural Dropping At 1Corner 3Edges 6Surfaces Height cm 80...

Page 10: ...sconnect the following connectors CP1001 CP1002 CP1003 CP4001 CP4002 and CP4003 Remove the Deck Chassis in the direction of arrow 1 2 3 4 1 4 SYSCON PCB AND JACK PLATE Refer to Fig 1 4 1 2 3 B1 1 Deck...

Page 11: ...g 2 4 2 5 CASSETTE SIDE L R Refer to Fig 2 5 Unlock the 4 supports 1 and then remove the Cassette Side L R 1 NOTE When you install the Cassette Side R be sure to move the Locker R after installing Cas...

Page 12: ...When you install the Tension Adjust install as shown in Fig 2 8 B Refer to Fig 2 8 B Fig 2 8 B 2 9 T BRAKE ASS Y Refer to Fig 2 9 Remove the T Brake Spring Remove the T Brake Ass y 1 2 Adjust the dir...

Page 13: ...e P5 Spring Remove the screw 1 Unlock the 2 supports 2 and remove the Cassette Opener Remove the Pinch Roller Block Pinch Roller Arm Spring Pinch Roller Lever Ass y and P5 3 Arm Ass y 1 2 3 4 1 2 2 P5...

Page 14: ...rews 1 Remove the Capstan DD Unit 1 2 3 Screw Torque 5 0 5kgf cm Fig 2 15 2 16 MIDDLE GEAR MAIN CAM Refer to Fig 2 16 A Remove the Polyslider Washer 1 then remove the Middle Gear Remove the E Ring the...

Page 15: ...Gear Tension Lever Loading Gear T Loading Gear Spring Loading Arm T Ass y Loading Gear Spring LED Reflecter Idler Arm Ass y Clutch Actuator Screw Torque 5 0 5kgf cm Fig 2 18 A NOTES Loading Arm T Ass...

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: ...Tracking to the center position Refer to the MECHANICAL ADJUSTMENT GUIDE ROLLER and ELECTRICAL ADJUSTMENT PG SHIFTER Press the ATR button on the remote control for more than 2 seconds during PLAY Make...

Page 19: ...l Clean the Head C3 1 CLEANING NOTE After cleaning the heads with isopropyl alcohol do not run a tape until the heads dry completely If the heads are not completely dry and alcohol gets on the tape da...

Page 20: ...EJECT button is available to insert and eject the Cassette Tape 1 C4 1 Ref No Remarks JG001 JG001Q JG001A JG001T JG001B JG001I JG001P JG001S JG002B JG002E JG002F JG005 JG153 JG022 JG024A JG100A JG154...

Page 21: ...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 22: ...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 23: ...er 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 the VHS Alignment Tape JG001S or JG001T Refer to SERVICING FIXTURE AND TOOLS Pr...

Page 24: ...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 25: ...PG SHIFTER CONDITIONS MODE PLAYBACK Input Signal Alignment Tape JG001P INSTRUCTIONS 1 2 3 4 Connect CH 1 on the oscilloscope to TP1002 and CH 2 to TP4201 Playback the alignment tape JG001P Press and...

Page 26: ...2 ELECTRICAL ADJUSTMENT PARTS LOCATION GUIDE SYSCON PCB TU6001 ELECTRICAL ADJUSTMENTS J4201 D2 2 TP4201 TP1002 TP4001 VR1001 TP1001 V651 T501...

Page 27: ...n 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 DEEM NC1 Y C MIX SYNC SEP VCA CLAMP 1 2 FBC Chara INS 6dB P R P R V AGC T4001 CLAMP...

Page 28: ...CR AUDIO OUT MUTE L 30 27 CV OUT 47 RF CH SW TUNER L 35 29 FF REW L 62 C0 76 TAB SW 31 SW1001 RESET AT 5 2V M CON POWER ON L 89 25 POWER FAIL H 82 HI FI DEMODULATOR SEG3 9 1 FF REW SW Q1010 RESET SW Q...

Page 29: ...2 RF_CONV_A OUT 3 6 AUDIO_OUT_L TV VCR P CON 12V FRONT IN JACK VIDEO J4203 2 FRONT_V_IN TUNER_V 5 3 Y C AUDIO CCD HEAD AMP FRONT_A_IN R Q4204 MUTE SW Q4203 MUTE SW Q4202 MUTE SW TUNER_A 11 IIC_CLK 12...

Page 30: ...21 22 62 61 AUDIO_OUT_L HIFI_H SW 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 HF1 FROM_NORMAL_A TO_NORMAL_A T...

Page 31: ...ER SW T501 8 6 4 5 IC501 KIA431 VOLTAGE CTL IC 1 2 PHOTO COUPLER L501 AC IN Q509 D505 D508 D523 D528 2 7 Q512 P CON 12V SW Q513 P ON SW E 9 P CON 5V SW F501 E 10 P CON 5V P CON 12V POWER_FAIL POWER_ON...

Page 32: ...WN CH UP 4 13 12 11 10 9 8 7 6 5 15 14 V651 LTG Y2K22M J SEG10 5G SYSCON DECK 1 3 2 5G SW Q651 SEG10 SW Q652 SEG9 SW Q653 4G SW Q654 SEG8 SW Q655 Q656 Q657 Q658 3G SW Q659 Q660 2G SW Q661 Q662 Q663 Q6...

Page 33: ...034 W079 R1060 W147 R4004 SW604_4 SW607 SW603_4 SW605 SW608 SW606_4 W121 CP601_1 Q503_1 CP1003 C4027 T501 W012 W071 W088 W081 Q515 R534 Q512 C520 W032 R511 W038 W036 R548 W014 D507 R537 W015 W057 R509...

Page 34: ...2 C4033 R4023 R4024 C4036 C4037 C4069 C4054 C4064 R4039 Q4012 R4041 Q4010 C4061R4038 R4034 R4035 C4060 R4043 C4066 R4042 C1016 C1017 R1051 R527 C506 C534 R1037 C1053 C1054 C1018 C1020 C1015 R1013 Q101...

Page 35: ...52 53 54 55 56 57 58 59 6 60 61 62 63 64 65 66 67 68 69 7 70 71 72 73 74 75 76 77 78 79 8 80 9 COMP H SW ENV DET H AMP_SW C ROTARY Y C_CS Y C_DATA Y C_CLK P CON 5V P CON 5V AUDIO_MUTE H FSC P CON 5V...

Page 36: ...DATA AFT S CURVE OSD_V P CON 5V A_OUT_MUTE L BOT TV VCR PGIN VIDEO_OUT EOT VIDEO_OUT TUNER_L MS_SEN B CAP_F R PGIN RF_CH_SW MS_SEN A AFT S CURVE ENV DET CYL_PG HIFI_ENV DET CYL_FG ST_SELECT V REC_ST H...

Page 37: ...6009 0 01 F C6004 0 01 F R6010 270 1 4W R6006 10K R6005 22K R4207 1K 1 4W R4209 75 R4210 100 R4211 1K1 4W R4204 10K R4201 4701 2W R4202 75 R6004 1K 1 4W R4205 10K R4206 390 R4212 390 C6003_1 10 16V KA...

Page 38: ...GE AT EACH PART WAS OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE NOTE THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME C514 1000 6 3V YK C519 470 16V YK C508 47 200V YK C517 1 50V KA C518 10 50V K...

Page 39: ...LATEST AT THE TIME R607 3 3K R605 13K R604 6 8K 1 4W R603 3 9K R602 2 7K R601 3 3K R666 120 R665 120 R663 120 R662 120 R661 100 R664 100 R670 120 R667 120 R668 120 R669 100 R671 100 R672 120 R673 120...

Page 40: ...6V KA C5505 1 50V KA TP5501 HIFI ENV W817 W842 W821 L5501 100uH 0305 L5504 22uH 0305 FSC IIC_CLK IIC_DATA TUNER_A AUDIO_MUTE H FRONT_A_IN R FRONT_A_IN L AUDIO_OUT R AUDIO_OUT L RF_CONV_A OUT TUNER_A P...

Page 41: ...SAFETY USE ONES ARE SINCE THESE PARTS MARKED BY CAUTION DURING PLAYBACK MEASURED WITH THE DIGITAL TESTER NOTE THE DC VOLTAGE AT EACH PART WAS OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE NOTE THI...

Page 42: ...ASS Y 2 1 FE HEAD HOT FE HEAD GND VEX927 CD651 FFC CP651 CD601 OPERATION PCB PCB270 VMX206 CP1002 CAPSTAN DD UNIT M2001 G O VCC MR FG SENSOR ROTOR MAGNET COIL MAIN HALL SENSOR LOGIC SWITCH OUT IN HALL...

Page 43: ...ms 1 0V div PB 200ms 1 0V div POWER ON 50ns 500mV div PB 500 s 1 0V div 9 Y C AUDIO CCD HEAD AMP SYSTEM CONTROL 13 PB 2 s 50 0V div PB 5ms 1 0V div 12 POWER HIFI DEMODULATOR WAVEFORMS The following wa...

Page 44: ...MECHANICAL EXPLODED VIEW 616 702 702 702 702 PCB010 SYSCON PCB TU6001 J4201 T501 615 609 618 610 703 703 703 614 617 704 611 619 604 601 608 606 602 613 701 607 603 608 PCB270 OPERATION PCB 605 701 6...

Page 45: ...511 509 329 330 502 PCB550 DECK PCB ASS Y 303 AA AB AB AB AA AB AA AA AB AB AB AB BA AA 501 356 317 361 309 355 300 502 334 AA UN4001 M2003 510 M101 352 Applying positions AA AB AC and BA for the grea...

Page 46: ...AA AA AA AB AB AA AA AA AA AA AC AA 307 354 326 327 322 513 350 308 337 AA 325 AB AA AB 300 NOTE Applying positions AA AB AC and BA for the grease or oil are displayed for this section Check if the c...

Page 47: ...12 723000A698 SHEET DISPLAY 613 735WPD0731 BUTTON FRAME 614 755WPA0019 PLATE COVER POWER 615 85OP700036 HOLDER EOT SENSOR 616 702WSBA027 CABINET TOP 617 722A080029 SHEET RATING 618 702WSA0077 PLATE BO...

Page 48: ...8001 CAPSTAN DD UNIT F2QSB36 318 85OA400175 TENSION ARM ASS Y M2003 1589S11014 MICRO MOTOR I2OAL03 319 85OA400184 TENSION BAND ASS Y S PCB550 A4C831B550 DECK PCB ASS Y VE8851 Q101 0000700320 TRANSISTO...

Page 49: ...30100 IC4001 I03F3200M0 IC LA71200M MPB VARIABLE RESISTORS IC5501 I01F62FBP0 IC AN3662FBP VR1001 V1163Q5BTC VOLUME SEMI FIXED EVNCYAA03BQ5 TRANSISTORS P C BOARD ASSEMBLIES Q502 TCAT032034 TRANSISTOR S...

Page 50: ...BON RESISTOR CAPACITORS CC CERAMIC CAPACITOR CE ALUMI ELECTROLYTIC CAPACITOR CP POLYESTER CAPACITOR CPP POLYPROPYLENE CAPACITOR CPL PLASTIC CAPACITOR CMP METAL POLYESTER CAPACITOR CMPL METAL PLASTIC C...

Page 51: ...M4E4 04B K124004 SPEC NO O R NO...

Page 52: ...SERVICE MANUAL MVR4041 Series A Design and specifications are subject to change without notice VIDEO CASSETTE RECORDER ORIGINAL MFR S VERSION A...

Page 53: ...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 54: ...D HEAD AMP SYSTEM CONTROL SERVO TUNER HI FI DEMODULATOR OPERATION POWER PRINTED CIRCUIT BOARDS SYSCON OPERATION SCHEMATIC DIAGRAMS Y C AUDIO CCD HEAD AMP SYSTEM CONTROL SERVO POWER OPERATION TUNER HI...

Page 55: ...6dBu 75ohm Sound Selector No Stereo Dual TV Sound Yes US ST G 3 Power Power Source AC 120V 60Hz DC Power Consumption Power On at AC 9W at 120V 60Hz Stand by at AC 1 7W at 120V 60Hz Per Year kWh Year P...

Page 56: ...1 1 2081 12 31 and Timer Timer Events 8 prog 1 month Back up One Touch Recording Max Time 5 Hours OTPB Valid Time No Timer Back up at Power Off Mode 5 sec G 11 Display Indicator Yes Indicator Type LED...

Page 57: ...ch Playback No Picture Control No Auto Preset No Channel Lock No Hotel Lock No Anti Theft No Audio Dubbing No Remort Control Code 1 2 No SQPB No CATV Yes Energy Star Yes MTS SAP Yes CM Skip 30sec x 6...

Page 58: ...ideo Input RCA x 1 Audio Input RCA x 2 Stereo Other Terminal No Rear Video Input No Audio Input No Video Output RCA x 1 Audio Output RCA x 2 Stereo Euro Scart No DC Jack 12V Center No VHF UHF Antenna...

Page 59: ...2 Open Flap to 90 and flex in direction of arrow A at the same time slide in direction of arrow B Then lift in direction of arrow C A C B Flap Fig 1 2 B1 1 2 1 2 Fig 1 1 B A 1 1 1 Top Cabinet 2 2 2 2...

Page 60: ...move the Locker R 1 2 3 Link Ass y NOTE 1 2 In case of the Locker R installation check if the two positions of Fig 2 3 B are correctly locked When you install the Cassette Side R be sure to move the L...

Page 61: ...2 3 Fig 2 6 A Screw Torque 3 0 5kgf cm Loading Motor 1 Main Chassis Worm NOTE 1 In case of the Worm installation check if the value of the Fig 2 6 B is correct Fig 2 6 B 19 2 0 1mm Safety surface for...

Page 62: ...ouch the section A of S Reel and T Reel Use gloves Refer to Fig 2 9 A Do not adhere the stains on it When you install the reel clean the shaft and grease it MG 33 If you do not grease noise may be hea...

Page 63: ...Use gloves When you install the A C Head Spring install as shown in Fig 2 11 B When you install the A C Head tighten the screw 1 first then tighten the screw 2 finally tighten the screw 3 1 2 3 2 10 C...

Page 64: ...emove the Main Rod Tension Lever Loading Arm S Unit and Loading Arm T Unit 1 Main Rod Main Loading Gear Tension Lever Loading Arm T Unit Loading Arm S Unit Fig 2 16 A 2 13 AHC ASS Y CYLINDER UNIT ASS...

Page 65: ...Fig 2 18 B Fig 2 18 C Cassette Guide Post Cassette Guide Post 2 17 Remove the Polyslider Washer 1 Remove the Clutch Ass y and Ring Spring Remove the Clutch Lever Remove the Coupling Gear Coupling Spr...

Page 66: ...a blower type IC desoldering machine Refer to Fig 3 2 2 Fig 3 2 NOTE Do not add the rotating and the back and forth directions force on the IC until IC can move back and forth easily after desoldering...

Page 67: ...in tip Soldering Iron NOTE When the IC leads are bent during soldering and or repairing do not repair the bending of leads If the bending of leads are repaired the pattern may be damaged So be always...

Page 68: ...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 69: ...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 70: ...Tracking to the center position Refer to the MECHANICAL ADJUSTMENT GUIDE ROLLER and ELECTRICAL ADJUSTMENT PG SHIFTER Press the ATR button on the remote control for more than 2 seconds during PLAY Make...

Page 71: ...Replace when rolling becomes abnormal Clean the Head CLEANING NOTE After cleaning the heads with isopropyl alcohol do not run a tape until the heads dry completely If the heads are not completely dry...

Page 72: ...pe For 2 heads model VHS Alignment Tape For 2 heads model VHS Alignment Tape For 2 heads model VHS Alignment Tape For 4 heads model VHS Alignment Tape For 4 heads model VHS Alignment Tape For 4 heads...

Page 73: ...Set the unit to the PLAY mode Install the tentelometer as shown in Fig 1 3 Confirm that the meter indicates 20 2gf in the beginning of playback 1 2 USING A CASSETTE TYPE TORQUE TAPE JG100A 1 2 3 After...

Page 74: ...2 as shown in Fig 2 1 B even if you press the Tracking Button to move the envelope The envelope waveform will begin to decrease when you press the Tracking Button Adjust the PG shifter during playback...

Page 75: ...to TP4001 CH 2 to TP1002 and CH 3 to HOT side of Audio Out Jack Playback the VHS Alignment Tape JG001S or JG001T Refer to SERVICING FIXTURE AND TOOLS Press and hold the Tracking Auto button on the rem...

Page 76: ...USTMENT PARTS LOCATION GUIDE 5 6 7 8 9 10 1 2 3 4 1 Tension Connect 2 Tension Arm 3 Guide Roller 4 Audio Control Head 5 X value adjustment driver hole 6 7 8 9 10 P4 Post T Brake Spring T Reel S Reel A...

Page 77: ...1 1 B Read and perform this adjustment when repairing the circuits or replacing electrical parts or PCB assemblies 1 BASIC ADJUSTMENT 1 2 3 4 D2 1 Connect CH 1 on the oscilloscope to TP1002 and CH 2...

Page 78: ...2 ELECTRICAL ADJUSTMENT PARTS LOCATION GUIDE SYSCON PCB T501 ELECTRICAL ADJUSTMENTS D2 2 J4205 J4204 J4203 VR1001 TP1001 TP4001 TP1002 TP4201 J4201 TU6001...

Page 79: ...Y LPF YNR COMB N L DEEM NC1 Y C MIX SYNC SEP VCA CLAMP 1 2 FBC Chara INS 6dB P R P R V AGC T4001 CLAMP EQ AMP LINE AMP MUTE ALC Y C_CS IIC_DATA IIC_CLK H AMP_SW C ROTARY H SW ENV DET COMP DUMMY_V SYNC...

Page 80: ...SEL ST_SELECT 23 4 10 GND 74 TAB SW 80 X1001 1002T01003 OSC 2 73 SW1001 AT 5V M CON POWER RESET 16 IC1003 R3111N311A C TR SYSTEM RESET IC 1 2 AT 12 6V P CON 5V POWER ON L 81 POWER FAIL H 89 POWER_ON L...

Page 81: ...V_A OUT 3 6 AUDIO_OUT_L TV VCR P CON 12V FRONT AV JACK VIDEO J4203 2 FRONT_V_IN TUNER_V 5 3 Y C AUDIO CCD HEAD AMP FRONT_A_IN R Q4204 MUTE SW Q4203 MUTE SW Q4202 MUTE SW TUNER_A 11 IIC_CLK 12 IIC_DATA...

Page 82: ...1 22 62 61 AUDIO_OUT_L HIFI_H SW 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 HF1 FROM_NORMAL_A TO_NORMAL_A TU...

Page 83: ...Q660 2G SW Q661 Q662 Q663 Q664 1G SW Q665 SEG7 SW SEG1 SW SEG3 SW SEG2 SW SEG4 SW SEG5 SW SEG6 SW 4G SEG_9 SEG_7 SEG_8 SEG_5 SEG_6 SEG_4 3G REC_LED SEG_3 2G T_REC_LED SEG_1 SEG_2 1G TV VCR_LED E 10 Q5...

Page 84: ...4204 W140 C4053 C6003_1 R4045 C5523 C5501 C5511 C5513 R6004 W817 C4209 Q4201 R4201 R4211 TP4201 W069 C4030 C4014 R4005 VR1001 L4001 W137 W111 W049 C4059 C4012 W812 W110 W139 W066 W136 W047 C4201 W064...

Page 85: ...1 R4002 R4003 R4010 R4210 C5503 R5503 R1007 Q4003 C4005 C4006 C5546 C5545 C5542 C5541 C5524 C5515 C5508 C5507 C5506 C5553 C5504 C5514 Q4202 C6014 R4202 R4206 R6006 R4212 R5513 R5502 R4012 C4016_1 C401...

Page 86: ...22uH L4005 47uH L4006 47uH RECORD COLOR SIGNAL RECORD LUMINANCE SIGNAL PLAYBACK COLOR SIGNAL PLAYBACK LUMINANCE SIGNAL AUDIO SIGNAL PB AUDIO SIGNAL REC TUNER VIDEO SIGNAL H SW ENV DET COMP H AMP_SW C...

Page 87: ...TV VCR VIDEO_OUT TUNER_L RF_CH_SW P CON 5V AT 5 2V AT 12 6_V GND GND GND IIC_DATA IIC_CLK V REC_ST H HIFI_ENV DET TUNER_L 4FSC C SYNC LDM_CTL AUDIO_MUTE H V REC_ST H HIFI_H SW SEG_9 TAB_SW RF_CH_SW C...

Page 88: ...DIGITAL TESTER NOTE THE DC VOLTAGE AT EACH PART WAS OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE NOTE THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME C520 470 6 3V YK C517 1 50V KA C518 10 50V KA...

Page 89: ...IS THE LATEST AT THE TIME R672_1 180 1 4W R670_1 180 1 4W R662_1 180 1 4W R666_1 180 1 4W R669_1 820 1 4W R667_1 180 1 4W R668_1 180 1 4W R675_1 820 1 4W R671_1 820 1 4W R673_1 180 1 4W R674_1 180 1 4...

Page 90: ...9 75 R4210 100 R4206 390 R4211 1K 1 4W R4204 10K R4205 10K R4212 390 R4202 75 R4201 4701 2W C6008 220 6 3V YK C6003_1 10 16V KA C4201 470 6 3V YK C4209 10 16V KA Q4204 2SC2412K MUTE SW Q4203 2SC2412K...

Page 91: ...A C5527 10 16V KA TP5501 HIFI ENV W817 L5504 22uH L5502 100uH L5501 100uH AUDIO SIGNAL PB AUDIO SIGNAL REC FSC IIC_CLK IIC_DATA TUNER_A AUDIO_MUTE H 5V FRONT_A_IN R FRONT_A_IN L AUDIO_OUT R AUDIO_OUT...

Page 92: ...AUDIO_OUT L VIDEO OUT FRONT_A_IN L AUDIO R J4205 FRONT AV JACK FRONT AV JACK J4204 AUDIO L J4203 VIDEO FRONT AV JACK REAR OUT JACK EP LP_COM SP_COM HF_COM EP LP CH2 L EP LP CH1 R HF2 L HF1 R SP CH2 L...

Page 93: ...ERVO 3 PB 1ms 100mV div 8 POWER ON 500 s 1 0V div Y C AUDIO CCD HEAD AMP 1 POWER ON 10 s 500mV div 2 POWER ON 100ns 100mV div 4 PB 500 s 200mV div 5 REC 5 s 20V div 6 POWER ON 5ms 1 0V div 9 FF REW 50...

Page 94: ...AL EXPLODED VIEW 618 703 703 703 703 705 601 606 701 611 607 610 602 603 607 PCB270 OPERATION PCB 701 609 615 617 614 612 PCB010 SYSCON PCB 612 613 TU6001 T501 614 J4205 608 J4201 J4203 704 616 605 60...

Page 95: ...02 323 508 341 331 334 333 314 302 301 313 307 300 317 309 336 346 345 321 319 320 AB 316 318 325 347 AA AB AB AB AA AA AA AA AA AB AB AB AB AB AB AB AB Applying positions AA and AB for the grease are...

Page 96: ...505 510 338 510 337 340 509 308 344 327 343 326 328 AA AA AB AB AB AA AA AA AA AA AA AA AA AA Applying positions AA and AB for the grease are displayed for this section Check if the correct grease is...

Page 97: ...612 701WPA0680 HOLDER DECK 613 755WPA0020 PLATE COVER POWER 614 85OP700036 HOLDER EOT SENSOR 615 702WSA0084 PLATE BOTTOM 616 85OP700037 HOLDER LED 617 722A08A092 SHEET RATING 618 702WSB0058 CABINET T...

Page 98: ...00232 P5 ARM ASS Y 2 H5002 1543D02013 HEAD FULL ERASE HVFHP0032A 314 85OA400233 TENSION ARM ASS Y WT M101 1596P98001 MOTOR LOADING MXN13FB12K3 315 85OA400231 INCLINED BASE S UNIT M2001 1510S98036 CAPS...

Page 99: ...77 SW606 0504201T32 SWITCH TACT SKQNAED010 ICS SW607 0504201T32 SWITCH TACT SKQNAED010 IC501 I1KJ9A4310 IC KIA431 SW608 0504201T32 SWITCH TACT SKQNAED010 IC505 0002E00610 PHOTO COUPLER LTV 817M VB SW6...

Page 100: ...BON RESISTOR CAPACITORS CC CERAMIC CAPACITOR CE ALUMI ELECTROLYTIC CAPACITOR CP POLYESTER CAPACITOR CPP POLYPROPYLENE CAPACITOR CPL PLASTIC CAPACITOR CMP METAL POLYESTER CAPACITOR CMPL METAL PLASTIC C...

Page 101: ...M4F2 04B O R NO SPEC NO K1X4011...

Page 102: ...SERVICE MANUAL Design and specifications are subject to change without notice MVR4041 Series B VIDEO CASSETTE RECORDER ORIGINAL MFR S VERSION B...

Page 103: ...tape for safety or which are assembled in the condition that these do not contact with the printed board The inside wiring is designed not to get closer to the pyrogenic parts and high voltage parts...

Page 104: ...OVAL AND INSTALLATION OF FLAT PACKAGE IC KEY TO ABBREVIATIONS SERVICE MODE LIST PREVENTIVE CHECKS AND SERVICE INTERVALS SERVICING FIXTURES AND TOOLS PREPARATION FOR SERVICING MECHANICAL ADJUSTMENTS EL...

Page 105: ...W 84 Intermediate Picture FP 45 75MHz Frequency Sound FS 41 25MHz FP FS 4 50MHz Preset CH No RF Converter Output Yes Channel 3 or 4 ch Level Impedance 66dBu 75ohm Sound Selector No Stereo Dual TV Sou...

Page 106: ...OTR T Rec Pause Eject Tape In Symbol Mark Yes CH AV Yes Clock Yes Repeat Yes Pin Code No Tape Counter Yes Index No Hotel Lock No Tape Speed Yes Manual Tracking Bar Setting No Hi Fi Yes S Repeat SR R S...

Page 107: ...s Rec OTR Yes Eject No Counter Reset Yes Speed Yes Timer Rec Yes TV Monitor No Quick View No Program No Slow Yes Auto Tracking Yes Set Tracking Yes Set Tracking Yes Menu Yes Enter Yes Cancel Yes Call...

Page 108: ...Ohm Coaxial Cable Yes Single shield Rod Antenna No Poles Terminal Loop Antenna No Terminal U V Mixer No DC Car Cord Center No Guarantee Card Yes Warning Sheet No Circuit Diagram No Antenna Change Plug...

Page 109: ...F Antenna Input F Type AC Inlet No G 16 Set Size Approx W x D x H mm 360 x 229 x 95 G 17 Weight Net Approx 3 2kg 7 1lbs Gross Approx 3 8kg 8 4lbs G 18 Carton Master Carton No Content Material Dimensio...

Page 110: ...2 Open Flap to 90 and flex in direction of arrow A at the same time slide in direction of arrow B Then lift in direction of arrow C A C B Flap Fig 1 2 B1 1 2 1 2 Fig 1 1 B A 1 1 1 Top Cabinet 2 2 2 2...

Page 111: ...R 1 2 3 Link Ass y NOTE 1 2 In case of the Locker R installation check if the two positions of Fig 2 3 B are correctly locked When you install the Cassette Side R be sure to move the Locker R after in...

Page 112: ...Tension Band installation install correctly as Fig 2 7 D In case of the Tension Connect installation install as the circled section of Fig 2 7 E Tension Band Tension Connect Tension Connect OK NG Fig...

Page 113: ...M If you do not grease noise may be heard in FF REW mode After installing the reel adjust the height of the reel Refer to MECHANICAL ADJUSTMENT 1 2 3 4 5 6 Fig 2 9 A NOTE 1 2 In case of the S Reel and...

Page 114: ...ead Use gloves When you install the A C Head Spring install as shown in Fig 2 11 B When you install the A C Head tighten the screw 1 first then tighten the screw 2 finally tighten the screw 3 1 2 3 A...

Page 115: ...Gear Remove the Main Rod Tension Lever Loading Arm S Unit and Loading Arm T Unit Main Rod Main Loading Gear Loading Arm T Unit Loading Arm S Unit Fig 2 16 A 1 1 2 2 14 CAPSTAN DD UNIT Refer to Fig 2 1...

Page 116: ...ig 2 18 B Fig 2 18 C Cassette Guide Post Cassette Guide Post 2 17 Remove the Polyslider Washer 1 Remove the Clutch Ass y and Ring Spring Remove the Clutch Lever Remove the Coupling Gear Coupling Sprin...

Page 117: ...sing a blower type IC desoldering machine Refer to Fig 3 2 2 Fig 3 2 NOTE Do not add the rotating and the back and forth directions force on the IC until IC can move back and forth easily after desold...

Page 118: ...8 Thin tip Soldering Iron NOTE When the IC leads are bent during soldering and or repairing do not repair the bending of leads If the bending of leads are repaired the pattern may be damaged So be al...

Page 119: ...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 120: ...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 121: ...position Refer to the MECHANICAL ADJUSTMENT GUIDE ROLLER and ELECTRICAL ADJUSTMENT PG SHIFTER Press the ATR button on the remote control for more than 2 seconds during PLAY Make the short circuit betw...

Page 122: ...eplace when rolling becomes abnormal Clean the Head Clutch Ass y Idler Arm Ass y CLEANING NOTE After cleaning the heads with isopropyl alcohol do not run a tape until the heads dry completely If the h...

Page 123: ...ad model APJG001T00 APJG001B00 APJG001P00 APJG001S00 Parts Name VHS Alignment Tape For 2 head model VHS Alignment Tape For 2 head model VHS Alignment Tape For 2 head model VHS Alignment Tape For 4 hea...

Page 124: ...he adjusting section for the Tension Arm position so that the Tension Arm top is within the standard line of Main Chassis While turning the S Reel clockwise confirm that the edge of the Tension Arm is...

Page 125: ...2 as shown in Fig 2 1 B even if you press the Tracking Button to move the envelope The envelope waveform will begin to decrease when you press the Tracking Button Adjust the PG shifter during playback...

Page 126: ...P4001 CH 2 to TP1002 and CH 3 to HOT side of Audio Out Jack Playback the VHS Alignment Tape JG001S or JG001T Refer to SERVICING FIXTURE AND TOOLS Press and hold the Tracking Auto button on the remote...

Page 127: ...STMENT PARTS LOCATION GUIDE 5 6 7 8 9 10 1 2 3 4 1 Tension Connect 2 Tension Arm 3 Guide Roller 4 Audio Control Head 5 X value adjustment driver hole 6 7 8 9 10 P4 Post T Brake Spring T Reel S Reel Ad...

Page 128: ...1 1 B Read and perform this adjustment when repairing the circuits or replacing electrical parts or PCB assemblies 1 BASIC ADJUSTMENT 1 2 3 4 D3 1 Connect CH 1 on the oscilloscope to TP1002 and CH 2...

Page 129: ...LOCATION GUIDE WIRING CONNECTION ELECTRICAL ADJUSTMENTS T501 S502 S501 TP1002 TP4001 J4203 J4205 J4204 TP4201 VR1001 TU6001 TP1001 J4201 CP651_1 AC IN SYSCON PCB CP4002 A C HEAD C D 1 0 0 2 CP601_1 OP...

Page 130: ...B N L DEEM NC1 Y C MIX SYNC SEP VCA CLAMP 1 2 FBC Chara INS 6dB P R P R V AGC T4001 CLAMP EQ AMP LINE AMP MUTE ALC IIC_DATA IIC_CLK H AMP_SW C ROTARY H SW ENV DET COMP DUMMY_V SYNC OSD_V FRONT_V_IN TU...

Page 131: ...80 X1001 1002T01003 OSC 2 73 SW1001 AT 5V M CON POWER RESET 16 IC1003 R3111N311A C TR SYSTEM RESET IC 1 2 AT 12 6V P CON 5V POWER ON L 81 POWER FAIL H 89 POWER_ON L POWER_FAIL LDM_CTL 1 2 CAP_FG CAP_...

Page 132: ...RF_CONV_A OUT 3 6 AUDIO_OUT_L TV VCR P CON 12V FRONT AV JACK VIDEO J4203 2 FRONT_V_IN TUNER_V 5 3 Y C AUDIO CCD HEAD AMP FRONT_A_IN R Q4204 MUTE SW Q4203 MUTE SW Q4202 MUTE SW TUNER_A 11 IIC_CLK 12 II...

Page 133: ...1 22 62 61 AUDIO_OUT_L HIFI_H SW 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 HF1 FROM_NORMAL_A TO_NORMAL_A TU...

Page 134: ...Q660 2G SW Q661 Q662 Q663 Q664 1G SW Q665 SEG7 SW SEG1 SW SEG3 SW SEG2 SW SEG4 SW SEG5 SW SEG6 SW 4G SEG_9 SEG_7 SEG_8 SEG_5 SEG_6 SEG_4 3G REC_LED SEG_3 2G T_REC_LED SEG_1 SEG_2 1G TV VCR_LED E 10 Q...

Page 135: ...C4053 C6003_1 R4045 C5523 C5501 C5511 C5513 R6004 W817 C4209 Q4201 R4201 R4211 TP4201 W069 C4030 C4014 R4005 VR1001 L4001 W137 W111 W049 C4059 C4012 W812 W110 W139 W066 W136 W047 C4201 W064 TU6001 W0...

Page 136: ...4002 R4003 R4010 R4210 C5503 R5503 R1007 Q4003 C4005 C4006 C5546 C5545 C5542 C5541 C5524 C5515 C5508 C5507 C5506 C5553 C5504 C5514 Q4202 C6014 R4202 R4206 R6006 R4212 R5513 R5502 R4012 C4016_1 C4019 C...

Page 137: ...04 22uH L4005 47uH L4006 47uH RECORD COLOR SIGNAL RECORD LUMINANCE SIGNAL PLAYBACK COLOR SIGNAL PLAYBACK LUMINANCE SIGNAL AUDIO SIGNAL PB AUDIO SIGNAL REC TUNER VIDEO SIGNAL H SW ENV DET COMP H AMP_SW...

Page 138: ...UT_MUTE L TV VCR VIDEO_OUT TUNER_L RF_CH_SW AT 5V M CON P CON 5V AT 5 2V AT 12 6_V GND GND GND IIC_DATA IIC_CLK V REC_ST H HIFI_ENV DET TUNER_L 4FSC C SYNC LDM_CTL AUDIO_MUTE H V REC_ST H HIFI_H SW SE...

Page 139: ...DIGITAL TESTER NOTE THE DC VOLTAGE AT EACH PART WAS OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE NOTE THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME C517 1 50V KA C520 470 6 3V YK C518 10 50V KA...

Page 140: ...THE LATEST AT THE TIME C650 0 1 F R605 13K R603 3 9K R602 2 7K R601 3 3K R672_1 180 1 4W R670_1 180 1 4W R662_1 180 1 4W R666_1 180 1 4W R669_1 820 1 4W R667_1 180 1 4W R668_1 180 1 4W R675_1 820 1 4...

Page 141: ...09 75 R4210 100 R4206 390 R4211 1K 1 4W R4204 10K R4205 10K R4212 390 R4202 75 R4201 470 1 2W C4209 10 16V KA C6008 220 6 3V YK C6003_1 10 16V KA C4201 470 6 3V YK Q4204 2SC2412K MUTE SW Q4203 2SC2412...

Page 142: ...C5527 10 16V KA TP5501 HI FI ENV W817 L5504 22uH L5502 100uH L5501 100uH AUDIO SIGNAL PB AUDIO SIGNAL REC FSC IIC_CLK IIC_DATA TUNER_A AUDIO_MUTE H 5V FRONT_A_IN R FRONT_A_IN L AUDIO_OUT R AUDIO_OUT...

Page 143: ...AUDIO CONTROL ASS Y SYSCON PCB PCB010 VMA224 TO OS651 COMMAND TRANSMITTER TM601 LOADING MOTOR M101 INTERCONNECTION DIAGRAM CP651_1 CP601_1 CD651_1 PG_GND PG_OUT CYL_CTL CYL_FG PG LDM_CTL CAP_CTL CYL L...

Page 144: ...ERVO 3 PB 1ms 100mV div 8 POWER ON 500 s 1 0V div Y C AUDIO CCD HEAD AMP 1 POWER ON 10 s 500mV div 2 POWER ON 100ns 100mV div 4 PB 500 s 200mV div 5 REC 5 s 20V div 6 POWER ON 5ms 1 0V div 9 FF REW 50...

Page 145: ...CAL EXPLODED VIEW 618 703 703 703 703 615 617 702 705 PCB270 OPERATION PCB 701 601 606 701 611 607 610 602 603 607 609 605 604 614 612 PCB010 SYSCON PCB 612 613 TU6001 T501 614 J4205 608 J4201 J4203 7...

Page 146: ...33 314 302 301 313 307 300 317 309 336 346 321 319 320 AB 316 318 325 347 AB AB AB AA AA AA AA AA AB AB AB AB AB AB 502 501 AD AC AC 345 AB AB Applying positions AA AB AC and AD for the grease are dis...

Page 147: ...510 337 340 509 308 344 327 343 326 328 AA AA AB AB AB AA AA AD AA AA AA AA AA AA Applying positions AA AB AC and AD for the grease are displayed for this section Check if the correct grease is applie...

Page 148: ...PA0680 HOLDER DECK 613 755WPA0020 PLATE COVER POWER 614 85OP700036 HOLDER EOT SENSOR 615 702WSA0084 PLATE BOTTOM 616 85OP700037 HOLDER LED 617 722A08A103 SHEET RATING 618 702WSB0058 CABINET TOP 701 81...

Page 149: ...400232 P5 ARM ASS Y 2 H5002 1543D02013 HEAD FULL ERASE HVFHP0032A 314 85OA400235 TENSION ARM ASS Y 2 M101 1596P98001 MOTOR LOADING MXN13FB12K3 315 85OA400231 INCLINED BASE S UNIT M2001 1510S98036 CAPS...

Page 150: ...TACT SKQNAED010 IC501 I1KJ9A4310 IC KIA431 SW604 0504201T32 SWITCH TACT SKQNAED010 IC505 0002E00610 PHOTO COUPLER LTV 817M VB SW605 0504201T32 SWITCH TACT SKQNAED010 IC511 0002E00610 PHOTO COUPLER LTV...

Page 151: ...BON RESISTOR CAPACITORS CC CERAMIC CAPACITOR CE ALUMI ELECTROLYTIC CAPACITOR CP POLYESTER CAPACITOR CPP POLYPROPYLENE CAPACITOR CPL PLASTIC CAPACITOR CMP METAL POLYESTER CAPACITOR CMPL METAL PLASTIC C...

Page 152: ...K214008 O R NO M4F2 23B SPEC NO...

Page 153: ...SERVICE MANUAL Please file this revision with the original version VIDEO CASSETTE RECORDER REVISION 1 MFR S VERSION B MVR4041 MFR S VERSION A B IC4001 LA71200M MPB LA71201M MPB...

Page 154: ...03N8682J RC 6 8K OHM 1 8W R4021 R903N8223J RC 22K OHM 1 8W R903N8183J RC 18K OHM 1 8W R4050 R903N8683J RC 68K OHM 1 8W DEL PCB010 A4E404B01A SYSCON PCB ASS Y VMX206A A4E404B010 SYSCON PCB ASS Y VERSIO...

Page 155: ...B SERVICE MANUAL Please file this revision with the original version VIDEO CASSETTE RECORDER MVR4041 Series A MFR S VERSION A B TU6001 TCMN0682PA13D TCMN0682PA13D 3 ORIGINAL Change of TAPE EJECT TIMM...

Page 156: ...DESCRIPTION TU6001 0162K00021 RF UNIT TCMN0682PA13D 0162K00025 RF UNIT TCMN0682PA13D 3 PCB010 A4F204B010 SYSCON PCB ASS Y VERSION A VMA224A A4F204B010 SYSCON PCB ASS Y VERSION B VMA224A SYSCON PCB s...

Page 157: ...M4F2 04B K1Z4014 SPEC NO O R NO...

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