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Memorex MVR2031, Руководство по обслуживанию

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2.  ELECTRICAL ADJUSTMENT PARTS LOCATION GUIDE

SYSCON  PCB

T501

ELECTRICAL ADJUSTMENTS

D2-2

J4205

J4203

VR1001

TP1001

TP4001

TP1002

TP4201

J4201

TU6001

Содержание MVR2031

Страница 1: ...SERVICE MANUAL Design and specifications are subject to change without notice MVR2031 VIDEO CASSETTE RECORDER ORIGINAL MFR S VERSION A...

Страница 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...

Страница 3: ...TS BLOCK DIAGRAMS Y C AUDIO CCD HEAD AMP SYSTEM CONTROL SERVO TUNER OPERATION POWER PRINTED CIRCUIT BOARDS SYSCON OPERATION SCHEMATIC DIAGRAMS Y C AUDIO CCD HEAD AMP SYSTEM CONTROL SERVO POWER OPERATI...

Страница 4: ...4 ch Level Impedance 66dBu 75ohm Sound Selector No Stereo Dual TV Sound No G 3 Power Power Source AC 120V 60Hz DC Power Consumption Power On at AC 8W at 120V 60Hz Stand by at AC 1 8W at 120V 60Hz Per...

Страница 5: ...G 10 Clock Timer Calendar 1990 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...

Страница 6: ...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 No CM Skip 30sec x 6 Times No G 1...

Страница 7: ...nt Video Input RCA x 1 Audio Input RCA x 1 Other Terminal No Rear Video Input No Audio Input No Video Output RCA x 1 Audio Output RCA x 1 Euro Scart No DC Jack 12V Center No VHF UHF Antenna Input F Ty...

Страница 8: ...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 A 1 1 1 Top Cabinet 2 2 2 3 Operatio...

Страница 9: ...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...

Страница 10: ...ding Motor Remove the Worm 1 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 1...

Страница 11: ...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...

Страница 12: ...ch the A C Head 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 scre...

Страница 13: ...move the Main Rod Tension Lever Loading Arm S Ass y and Loading Arm T Ass y 1 Main Rod Main Loading Gear Tension Lever Loading Arm T Ass y Loading Arm S Ass y Fig 2 18 A 2 13 AHC ASS Y CYLINDER UNIT A...

Страница 14: ...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...

Страница 15: ...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...

Страница 16: ...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...

Страница 17: ...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...

Страница 18: ...or Separation Transistor Tracking Trick Playback Test Point Unregulated Volt Voltage Controlled Oscillator Video Intermediate Frequency Vertical Pulse Voltage Display Video Playback Variable Resistor...

Страница 19: ...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...

Страница 20: ...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...

Страница 21: ...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...

Страница 22: ...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...

Страница 23: ...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...

Страница 24: ...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...

Страница 25: ...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...

Страница 26: ...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...

Страница 27: ...2 ELECTRICAL ADJUSTMENT PARTS LOCATION GUIDE SYSCON PCB T501 ELECTRICAL ADJUSTMENTS D2 2 J4205 J4203 VR1001 TP1001 TP4001 TP1002 TP4201 J4201 TU6001...

Страница 28: ...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 EQ AMP LINE...

Страница 29: ...12 P CON 5V BOT SENSOR Q1008 H SW 24 C SYNC 54 H SW C SYNC OSD 1 72 TAB SW 80 X1001 CSTS1000MG96004 T2 OSC 2 73 SW1001 IC1003 R3111N311A C TR OPERATION 1G TV VCR LED 2G T REC LED 79 78 3G REC LED 77...

Страница 30: ...T JACK J4201 2 Q4201 BUFFER VIDEO_OUT SYSCON SERVO 2 3 6 P CON 12V FRONT AV JACK VIDEO J4203 2 FRONT_V_IN TUNER_V Y C AUDIO CCD HEAD AMP TUNER_A E 5 15 FSC 2 MONO AUDIO J4205 SYSCON SERVO RF SW SW6001...

Страница 31: ...01 KIA431 VOLTAGE CTL IC 3 1 PHOTO COUPLER L501 AC IN Q506 D505 D508 D523 D528 2 7 Q508 P ON SW P CON 5V SW F501 P CON 5V P CON 12V POWER_FAIL POWER_ON H AT 12 6V 32V SYSCON SERVO 10 AT 5V M CON Q515...

Страница 32: ...W139 W066 W136 W047 SW6001 R4053 C4201 W064 TU6001 W067 W141 SW1001 W094 W816 W024 W113 W115 TP1001 W071 W157 W158 W042 W043 W041 W092 W055 W040 W053 R4047 W085 W088 W087 W051 W048 W065 W027 W022 W021...

Страница 33: ...3 R4010 R4210 R1007 Q4003 C4005 C4006 C6002 C6014 R4202 R6006 C4204 R4012 C4016_1 C4019 C4015 C4020 C4021 R4014 R4016 R4006 C4028 R4017 R4019 C4029 C4032 R4021 R4022 C4033 R4023 R4024 C4036 C4037 C406...

Страница 34: ...5 76 77 78 79 8 80 9 L4004 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...

Страница 35: ...ORD COLOR SIGNAL RECORD LUMINANCE SIGNAL PLAYBACK COLOR SIGNAL PLAYBACK LUMINANCE SIGNAL POWER_FAIL LED_VCC POWER_ON H AT 5V M CON IIC_DATA_A IIC_CLK_A AFT S CURVE TV VCR VIDEO_OUT P CON 5V AT 5 2V AT...

Страница 36: ...FETY USE ONES ARE SINCE THESE PARTS MARKED BY CAUTION L504_1 22uH L505_1 22uH DURING PLAYBACK MEASURED WITH THE DIGITAL TESTER NOTE THE DC VOLTAGE AT EACH PART WAS OF PRINTING AND SUBJECT TO CHANGE WI...

Страница 37: ...1_1 A2001WV2 3P 1 2 3 CD651 CU230701 DURING PLAYBACK MEASURED WITH THE DIGITAL TESTER NOTE THE DC VOLTAGE AT EACH PART WAS OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE NOTE THIS SCHEMATIC DIAGRAM...

Страница 38: ...B C6014 0 001 Y C6002 0 022 B C6009_1 0 01 F R4201 470 1 2W R4213_1 390 1 4W R6010 270 1 4W R6006 10K R6005 22K R6004 1K 1 4W R4209 75 R4210 100 R4205 10K R4202 75 C4209 10 16V KA C6003_1 10 16V KA C4...

Страница 39: ...EAD 3 2 1 9 8 7 5 4 6 AUDIO_OUT J4201_3 CP651_1 LD CY_VCO CYL _CTL CYL_FG PG GND M VCC LDM _CTL CAP _CTL I_LIMIT CAP M F R CAP _VCO CAP _FG M2003 MICRO MOTOR PG GND PG OUT GND M COM W OUT V OUT U OUT...

Страница 40: ...diagram NOTE SYSCON SERVO 3 PB 1ms 100mV div 8 POWER ON 500 s 1 0V div 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 500...

Страница 41: ...L EXPLODED VIEW 621 618 702 702 702 702 601 602 603 604 605 606 607 608 609 610 610 701 PCB270 OPERATION PCB 701 701 611 PCB010 SYSCON PCB TU6001 T501 614 616 613 J4201 620 612 612 614 619 J4205 J4203...

Страница 42: ...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...

Страница 43: ...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...

Страница 44: ...LDER DECK 613 755WPA0020 PLATE COVER POWER 614 85OP700036 HOLDER EOT SENSOR 615 702WSA0086 PLATE BOTTOM 616 701WPA0686 HOLDER DECK 617 722A08A088 SHEET RATING 618 702WSB0058 CABINET TOP 619 85OP700037...

Страница 45: ...5OA400226 P5 ARM ASS Y H5002 1543D02013 HEAD FULL ERASE HVFHP0032A 314 85OA400230 TENSION ARM ASS Y M101 1596P98001 MOTOR LOADING MXN13FB12K3 315 85OA400231 INCLINED BASE S UNIT M2001 1510S98035 CAPST...

Страница 46: ...D666 0021E2Q140 LED LTL 1CHEE 002A CD6002 06CQL02006 CABLE SI C108 40 D1001 0010100320 INFRARED LED LNA2702L010R CP1001 06972C0010 CONNECTOR PCB SIDE TMC J12P B2 D1002 D1VT001330 DIODE SILICON 1SS133T...

Страница 47: ...M4F1 03B K184015 SPEC NO O R NO...

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