Memorex MVR2041 Service Manual

Download or browse on-line these Service Manual for Memorex MVR2041 VCR.

Memorex MVR2041 Manual Information:

This manual for Memorex MVR2041, given in the PDF format, is available for free online viewing and download without logging on. The guide contains 48 pages, and the size of the file at download is . The document type is Service Manual.

Download Manual

More Manuals:

In case you failed to obtain relevant information in this document, please, look through related operating manuals and user instructions for Memorex MVR2041. Just click one of the links below to go to the selected manual:

Summary of Contents:

[Page 1] Memorex MVR2041

SERVICE MANUAL VIDEO CASSETTE RECORDER ORIGINAL MFR’S VERSION A MVR2041 Design and specifications are subject to change without notice. ...

[Page 2] Memorex MVR2041

SERVICING NOTICES ON CHECKING As for the places which need special attentions, they are indicated with the labels or seals on the cabinet, chassis and parts. Make sure to keep the indications and notices in the operation manual. PERFORM A SAFETY CHEC...

[Page 3] Memorex MVR2041

CONTENTS A1-1 A1-1 A2-1 A3-1~A3-4 B1-1 B2-1~B2-5 C1-1, C1-2 C2-1 C3-1 C4-1 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 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 H-1 I-1 I-2, I-3 ...

[Page 4] Memorex MVR2041

GENERAL SPECIFICATIONS G-1 VCR System VHS Player / Recorder System Video System NTSC Hi-Fi STEREO No NTSC PB(PAL60Hz) No Deck DECK OVD-6S Loading System Front Motor 3 Heads Video Head 4Head FM Audio Head No Normal Audio /Control Mono Erase(Full Trac...

[Page 5] Memorex MVR2041

GENERAL SPECIFICATIONS G-5 Interface Switch Front Power Yes Play Yes Pause/Still No System Select No One Touch Playback No Channel Up Yes Channel Down Yes F.FWD/Cue Yes Eject/Stop Yes Main Power SW No Volume Up No Volume Down No Rew/Rev Yes Rec/OTR Y...

[Page 6] Memorex MVR2041

GENERAL SPECIFICATIONS G-13 Display Indicator Yes Indicator Type LED Module Clock/Counter,CH,Timer Rec,OTR, Play Rec,FF(Cue),Rew(Rev),Stop,ATR Yes Pause("Rec"Flash) Yes Still("Play"Flush) Yes Eject(Tape Mark Flash) Yes Slow Yes WK...

[Page 7] Memorex MVR2041

GENERAL SPECIFICATIONS G-16 Features Auto Head Cleaning Yes Auto Tracking Yes Index Search No HQ (VHS Standard High Quality) Yes Auto Power On, Auto Play, Auto Rewind, Auto Eject Yes Auto Power Off Yes Forward/Reverse Picture Search Yes VIDEO PLUS+(S...

[Page 8] Memorex MVR2041

DISASSEMBLY INSTRUCTIONS B2-1 2. REMOVAL OF DECK PARTS 2-1: TOP BRACKET (Refer to Fig. 2-1) Slide the 2 supports 1 and remove the Top Bracket.1. NOTE When you install the Tape Guide L, install as shown in the circle of Fig. 2-3-B. (Refer to Fig. 2-3-...

[Page 9] Memorex MVR2041

DISASSEMBLY INSTRUCTIONS B2-2 (A) Link Unit Link Unit (B) Main Chassis 2-6: LINK UNIT (Refer to Fig. 2-6) Set the Link Unit to the Eject position. Remove the (A) side of the Link Unit first, then remove the (B) side. 1. 2. Fig. 2-6 NOTE When you inst...

[Page 10] Memorex MVR2041

DISASSEMBLY INSTRUCTIONS B2-3 2-10: S REEL/T REEL (Refer to Fig. 2-10) Remove the S Reel and T Reel. Remove the 2 Polyslider Washers 1. 1. 2. NOTE Do not touch the Pinch Roller. (Use gloves.) When you install the Pinch Roller Block, install as shown ...

[Page 11] Memorex MVR2041

DISASSEMBLY INSTRUCTIONS B2-4 1 Middle Gear Main Cam Pinch Roller Cam Joint Gear P5 Cam Fig. 2-16-A NOTE When you install the Pinch Roller Cam, P5 Cam and Main Cam, align each marker. (Refer to Fig. 2-16-B) Pinch Roller Cam P5 Cam Main Cam Marker Che...

[Page 12] Memorex MVR2041

DISASSEMBLY INSTRUCTIONS B2-5 2-18: LOADING GEAR S/T ASS'Y (Refer to Fig. 2-18-A) 1. 2. 3. 4. 5. 6. 7. 8. 9. Remove the E-Ring 1 and remove the Main Loading Gear. Remove the Capstan Brake Spring. Slide the Main Rod and remove the Spring Holder. ...

[Page 13] Memorex MVR2041

KEY TO ABBREVIATIONS A B C D E F G H A/C ACC AE AFC AFT AFT DET AGC AMP ANT A.PB APC ASS'Y AT AUTO A/V BGP BOT BPF BRAKE SOL BUFF B/W C CASE CAP CARR CH CLK CLOCK (SY- SE) COMB CONV CPM CTL CYL CYL-M CYL SENS DATA (SY-CE) dB DC DD Unit DEMOD DET...

[Page 14] Memorex MVR2041

KEY TO ABBREVIATIONS S T U V X Y SYNC SYNC SEP TR TRAC TRICK PB TP UNREG V VCO VIF VP V.PB VR V.REC VSF VSR VSS V-SYNC VT X'TAL Y/C : : : : : : : : : : : : : : : : : : : : : Synchronization Sync Separator, Separation Transistor Tracking Trick Pl...

[Page 15] Memorex MVR2041

C2-1 SERVICE MODE LIST This unit provided with the following SERVICE MODES so you can repair, examine and adjust easily. Method Operations Adjusting of the Tracking to the center position. Refer to the "MECHANICAL ADJUSTMENT" (GUIDE ROLLER)...

[Page 16] Memorex MVR2041

PREVENTIVE CHECKS AND SERVICE INTERVALS The following standard table depends on environmental conditions and usage. Unless maintenance is properly carried out, the following service intervals may be quite shortened as harmful effects may be had on ot...

[Page 17] Memorex MVR2041

(For 2 heads model) VHS Alignment Tape JG001 JG001A JG001Q JG001T SERVICING FIXTURES AND TOOLS JG100ATorque Tape (VHT-063) JG024AJG022 Master PlaneJG153X Value Adjustment Screwdriver JG005Post Adjustment Screwdriver Part No. SV-TG0-030-000 ...

[Page 18] Memorex MVR2041

MECHANICAL ADJUSTMENTS 1. CONFIRMATION AND ADJUSTMENT Read the following NOTES before starting work. • • Place an object which weighs between 450g~500g on the Cassette Tape to keep it steady when you want to make the tape run without the Cassette...

[Page 19] Memorex MVR2041

MECHANICAL ADJUSTMENTS 1-4: CONFIRMATION OF VSR TORQUE Operate within 4~5 seconds after the reel disk begins to turn. Install the Torque Gauge (JG002F) and Adapter(JG002B) on the S Reel. Set to the Rewind mode . (Refer to Fig.1-4) Then, confirm that ...

[Page 20] Memorex MVR2041

MECHANICAL ADJUSTMENTS 2-3:2-2: When the Tape Running Mechanism does not work well, adjust the following items. CONFIRMATION AND ADJUSTMENT OF AUDIO/CONTROL HEAD 1. 2. 3. 4. When the height is not correct, turn the s 3 to adjust the height. Then, adj...

[Page 21] Memorex MVR2041

MECHANICAL ADJUSTMENTS 3. 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 Spring T Reel S ...

[Page 22] Memorex MVR2041

ELECTRICAL ADJUSTMENTS CAUTION When replacing IC's or transistors, use only specified silicon grease (YG6260M). (To prevent the damage to IC's and transistors.) 1-1:PG SHIFTER CONDITIONS MODE-PLAYBACK Input Signal-Alignment Tape (JG001B) IN...

[Page 23] Memorex MVR2041

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

[Page 24] Memorex MVR2041

Y/C/AUDIO/CCD/HEAD AMP BLOCK DIAGRAM E-1 30 2 22 32 10 21 67 65 7 9 36 6 8 34 55 54 53 57 4 3 5 78 76 H.AMP SW REC AMP CP4001 6 5 4 SP-CH1 (R) SP_COM SP-CH2 (L) CYL FE HEAD (HOT) FE HEAD (GND) 2 1 CP4003 FE HEAD CP4002 6 5 4 AUDIO PB AUDIO REC CTL+ ...

[Page 25] Memorex MVR2041

SYSCON/SERVO/TIMER IC IC1001 OEC8071A SEG 4 MS SEN-B SEG 5 SEG 9 SEG 10 10 20 80 11 22 SYSTEM CONTROL/SERVO/TIMER/DECK BLOCK DIAGRAM OPERATION X1001 14.31818MHz OSC I OSC 038 37 KEY-A 87 REEL-T 4 REEL SENSOR Q1002 1 2 VCC BOT BOT SENSOR Q101 Q1006...

[Page 26] Memorex MVR2041

TUNER BLOCK DIAGRAM TU6001 3 5 FRONT_A_IN-L REAR OUT JACK J4201 2 Q4201 BUFFER VIDEO_OUT SYSCON/SERVO/ TIMER/DECK 2 3 6 TV/VCR P.CON + 12V FRONT AV JACK VIDEO J4203 2 FRONT_V_IN TUNER_V Y/C/AUDIO/CCD HEAD AMP TUNER_A 11 IIC_CLK 12 IIC_DATA 23 24 21 S...

[Page 27] Memorex MVR2041

POWER BLOCK DIAGRAM Q502 Q511 Q503 Q505 CONTROL PHOTO COUPLER SW T501 8 6 4 5 IC501 KIA431 VOLTAGE CTL IC 1 2 PHOTO COUPLER L501 AC IN Q506 D505, D508, D523, D528 2 7 Q508 P.ON SW E-7 P.CON +5V SW F501 E-8 P.CON + 5V P.CON +12V POWER_FAIL POW...

[Page 28] Memorex MVR2041

OPERATION BLOCK DIAGRAM E-9 E-10 SYSCON/SERVO/ TIMER/DECK KEY-A KEY-B KEY-A KEY-B 1 2 CP601 CP651 4 3 REC/OTR PLAY FF/CUE REW/REV STOP/EJECT POWER OS651 REM_IN 1 CH DOWN CH UP 4 13 12 11 10 987 65 15 14 V651 LTG-Y2K22M-J SEG_10 5G SYSCON/SERVO/ TIME...

[Page 29] Memorex MVR2041

CP1002 TU6001 SW1001 CP4001 OS651 W811 FH502 FH501 L501 F501 L504 C514 D514 C4211 T4001 Q4001 Q4002 Q4006 Q4005 C4010 C4031 Q1006 TP1002 TP4001 C505 W813 L6003 R6010 D512 Q1005 Q1004 CP4002 D1001 X1001 W142 C509 D511 R514 C512 D505 D508 D523 D528 W14...

[Page 30] Memorex MVR2041

R6005 R4209 C6009 R506 R510 R516 R518 R4205 R4001 R4011 R4002 R4003 R4010 R1045 R1044 R1087 R4210 R1011 Q4003 C4005 C4006 C6002 C4024 C6014 R4202 R6006 R1083 Q1003 R1002 C507 C4204 IC1001 IC4001 R4012 C4016_1 C4019 C4015 C4020 C4021 R4014 R4016 R4006...

[Page 31] Memorex MVR2041

ABC D E F GH ABC D E F GH 2 1 3 4 5 6 7 8 2 1 3 4 5 6 7 8 CAUTION: DIGITAL TRANSISTOR Q4003 KRA103RTK SW CP4001 TOC-C09X-A1 1 2 3 4 5 6 7 8 9 CP4002 IMSA-9604S-06Z13 1 2 3 4 5 6 CP4003 TMC-T02X-E1 1 2 DURING PLAYBACK MEASURED WITH THE DIGITAL TESTER ...

[Page 32] Memorex MVR2041

ABC D E F GH ABC D E F GH 2 1 3 4 5 6 7 8 2 1 3 4 5 6 7 8 CP1003 IMSA-9604S-04Z14 1 2 3 4 Q1010 KRC103RTK FF/REW SW Q1006 PNA2604M010R EOT SENSOR DANS LA NOMENCLATURE DES PIECES N’UTILISER QUE CELLS DECRITES DANGEREUSES AN POINT DE VUE SECURITE ETA...

[Page 33] Memorex MVR2041

ABC D E F GH ABC D E F GH 2 1 3 4 5 6 7 8 2 1 3 4 5 6 7 8 L6003 15uH TU6001 TMDH2-A34A 10 11 12 13 14 15 16 17 18 2 21 22 23 24 25 26 27 28 3 4 5 6 8 9 H1 H2 E J4201_1 AV2-15D-2 REAR OUT JACK 1 23 H E J4203 AV1-15D-3 FRONT AV JACK VIDEO 1 2 H E J4205...

[Page 34] Memorex MVR2041

ABC D E F GH ABC D E F GH 2 1 3 4 5 6 7 8 2 1 3 4 5 6 7 8 D512 SB140-EIC D511 RGP10J-EIC D506 1SS133 D523 1N4005-EIC D514 SB290S D502 1SS133 D528 1N4005-EIC D508 1N4005-EIC D505 1N4005-EIC D507 1SS133 D521 1SS244 Q511 LTV-817M-VB PHOTO COUPLER 1 2 34...

[Page 35] Memorex MVR2041

ABC D E F GH ABC D E F GH 2 1 3 4 5 6 7 8 2 1 3 4 5 6 7 8 Vout B+ GND OS651 PIC26043LO 1 2 3 SW660 SKHVBED010 CH DOWN SW659 SKHVBED010 CH UP SW607 SKQNAED010 REW/REV SW606_1 SKQNAED010 PLAY SW605 SKQNAED010 FF/CUE SW604_1 SKQNAED010 REC/OTR SW603_1 S...

[Page 36] Memorex MVR2041

ABC D E F GH ABC D E F GH 2 1 3 4 5 6 7 8 2 1 3 4 5 6 7 8 S105 S106 S103 S104S101 S102 CP101 52044-0445 1 2 3 4 Q101 RPT-38PB113 BOT SENSOR DANS LA NOMENCLATURE DES PIECES N’UTILISER QUE CELLS DECRITES DANGEREUSES AN POINT DE VUE SECURITE ETANTLES ...

[Page 37] Memorex MVR2041

ABC D E F GH ABC D E F GH 2 1 3 4 5 6 7 8 2 1 3 4 5 6 7 8 9 8 7 6 4 5 3 2 1 CP4001 6 5 4 3 2 1 6 5 4 3 2 1 2 1 CP4003 8 7 6 5 4 3 2 1 8 7 6 5 4 3 2 1 7 6 5 4 3 2 1 7 6 5 4 3 2 1 OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE THE TIMETHIS INTERCONNE...

[Page 38] Memorex MVR2041

1 4 POWER ON 10µs 500mV/div 2 POWER ON 100ns 100mV/div 3 PB 1ms 100mV/div PB 500µs 200mV/div 5 REC 5µs 20.0V/div 6 8 7 PB 200ms 1.0V/div PB 200ms 1.0V/div POWER ON 50ns 500mV/div PB 500µs 1.0V/div 9 Y/C/AUDIO/CCD/HEAD AMP SYSCON/SERVO/TIM...

[Page 39] Memorex MVR2041

I-1 MECHANICAL EXPLODED VIEW 703 703 703 PCB010 (SYSCON PCB) TU6001 J4201 T501 615 620 617 611 613 614 619 702 612 601 602 603 604 605 606 607 608 609 610 610 701 PCB270 (OPERATION PCB) 701 616 618 704 704 704 704 ...

[Page 40] Memorex MVR2041

I-2 CHASSIS EXPLODED VIEW (TOP VIEW) 321 507 H5001 506 305 304 301 347 316 315 338 512 310 359 313 357 360 306 360 358 353 351 363 323 324 362 320 328 512 314 502 H5002 511 509 329 330 502 PCB550 (DECK PCB ASS'Y) 303 AA AB AB AB AA AB AA AA AB A...

[Page 41] Memorex MVR2041

CHASSIS EXPLODED VIEW (BOTTOM VIEW) I-3 AB 302 M2001 511 340 505 341 343 503 345 339 342 504 332 346 311 333 346 312 331 505 344 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, ...

[Page 42] Memorex MVR2041

MECHANICAL REPLACEMENT PARTS LIST REF. NO.PART NO. DESCRIPTION 601 A4E315B720CABINET,FRONT ASS'Y 602 701WPJB115CABINET,FRONT 603 711WPDA266PLATE,DISPLAY 604 712WPJA810FLAP 605 735WPAA222BUTTON,STOPPER 606 735WPAA221BUTTON,POWER 607 735WPDA397BUT...

[Page 43] Memorex MVR2041

CHASSIS REPLACEMENT PARTS LIST REF. NO.PART NO. DESCRIPTION REF. NO.PART NO. DESCRIPTION 300 A4E304C420KDECK ASS'Y A4E304C420K 501 8107126A04 SCREW,TAP TITE(S) PAN 2.6x10 502 8107226804 SCREW,TAP TITE(S) BIND 2.6x8 301 85OA500022 AHC ASS'Y ...

[Page 44] Memorex MVR2041

ELECTRICAL REPLACEMENT PARTS LIST REF. NO.PART NO. DESCRIPTION REF. NO.PART NO. DESCRIPTION RESISTORS TRANSISTORS !R502 R03102335JRC 3.3M OHM 1/2W Q4010 T6YJ1037K0TRANSISTOR, SILICON 2SA1037AKT146(R,S) !R512 R002T2333JRC 33K OHM 1/2W Q4012 T8YJ...

[Page 45] Memorex MVR2041

ELECTRICAL REPLACEMENT PARTS LIST RESISTOR RC...................CARBON RESISTOR CAPACITORS CC...................CERAMIC CAPACITOR CE................... .ALUMI ELECTROLYTIC CAPACITOR CP....................POLYESTER CAPACITOR CPP.................POLYPR...

[Page 46] Memorex MVR2041

M4E3-15BSPEC.NO. O/R NO. K144003 ...

[Page 47] Memorex MVR2041

SERVICE MANUAL Please file this revision with the original version. VIDEO CASSETTE RECORDER REVISION 1 MFR’S VERSION B MVR2041 MFR’S VERSION A B IC4001 LA71200M-MPB LA71201M-MPB ...

[Page 48] Memorex MVR2041

Change of IC PART NO. DESCRIPTION PART NO. DESCRIPTION IC4001 I03F3200M0 IC LA71200M-MPB I03F3201M0 IC LA71201M-MPB C4033 CS0RB0413K CC 0.001 UF 50V B CS0RB04B3K CC 0.0012UF 5...