Memorex MVT2136A, Service Manual

Page 1: ...SERVICE MANUAL Design and specifications are subject to change without notice MVT2195B COLOR TELEVISION VIDEO CASSETTE RECORDER ORIGINAL MFR S VERSION A...

Page 2: ...ICE MANUAL MVT2195B COLOR TELEVISION VIDEO CASSETTE RECORDER C A MFR S VERSION F20EL82 EP14BD M2003 REVISION 1 MFR S VERSION C Please file this revision with the original version OEC7043B OEC7043A IC1...

Page 3: ...A5A01A SYSCON PCB ASS Y VMX180B A546A5A01B SYSCON PCB ASS Y VMX180C MAIN PCB s are not interchangeable Change of IC1001 DIFFERENCES MFR S VERSION A MFR S VERSION C REF NO PART NO DESCRIPTION PART NO D...

Page 4: ...HEAD AMP DEFLECTION POWER 9 PB 1 0V 5ms div 15 0 5V 5ms div 14 500mV 5 s div 13 5 0V 20ms div 12 PB 1 0V 5ms div 11 PB 0 5V 0 5ms div 7 POWER ON 1 0V 10 s div 8 PB 1 0V 10ms div 5 POWER ON 1 0V 20 s...

Page 5: ...e following waveforms were measured at the point of the corresponding balloon number in the schematic diagram NOTE H 2 WAVEFORMS CRT 20 50 0V 20 s div 19 50 0V 20 s div 18 200mV 20 s div 17 2 0V 20 s...

Page 6: ...AL EXPLODED VIEW I 1 124 209 209 210 209 123 209 209 209 PCB110 CRT PCB 133 203 203 203 203 L503 V801 114 J801 PCB030 OPERATION PCB 201 102 104 105 103 109 107 106 108 202 201 101 A 111 SP351 112 201...

Page 7: ...119 211 128 129 127 208 208 202 132 118 212 208 202 202 122 212 213 206 207 204 115 TU601 130 115 117 FB401 131 117 120 204 207 125 120 121 PCB010 SYSCON PCB 126 116 117 205 MECHANICAL EXPLODED VIEW I...

Page 8: ...11 509 329 330 502 502 PCB550 DECK PCB ASS Y 303 AA AD AD AD AD AA AD AD AA AA AB AB AD AD BA AA 352 503 503 367 501 356 317 369 309 355 Applying positions AA AB AC AD and BA for the grease or oil are...

Page 9: ...A AA AD AD AA AA AA AA AA AC AA 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 correct...

Page 10: ...SA0120 PLATE BOTTOM EARTH 127 752WSAA028 SHIELD BOTTOM 128 800WFA0038 CUSHION 10x10xT2 129 800WFA0037 CUSHION 15x5xT6 130 753WSA0130 SHIELD COVER HEAD AMP 131 899HV3T000 HOLDER ANODE WIRE 132 752WSA02...

Page 11: ...S Y S M2001 1510398030 CAPSTAN DD UNIT F2QSB02 M2003 1589V11007 MICRO MOTOR EP14BD 320 85OA400178 PINCH ROLLER LEVER ASS Y PCB550 A4C831B550 DECK PCB ASS Y VE8851 321 85OA600188 BRAKE T ASS Y S Q101 0...

Page 12: ...P 0 1 UF 250V ECQUL D613 D1VT001330 DIODE SILICON 1SS133T 77 C507 E51CGC471M CE 470 UF 200V D614 D1VT001330 DIODE SILICON 1SS133T 77 C510 E5EZT4101M CE 100 UF 35V D615 D97U06R81B DIODE ZENER MTZJ6 8B...

Page 13: ...10 Q507 TC5T018154 TRANSISTOR SILICON 2SC1815Y TPE2 SW794 0504201T31 SWITCH TACT SKHVBED010 Q513 TNYJB05001 COMPOUND TRANSISTOR DTC114EKAT146 SW795 0504201T31 SWITCH TACT SKHVBED010 Q602 TC5T021204 TR...

Page 14: ...X30BD F501 081PA05003 FUSE 233005 MB000 F502 080PA2R501 FUSE 23302 5 MB000 FB401 043219010F TRANSFORMER FLYBACK 3219010F FH501 06710T0006 HOLDER FUSE EYF 52BC FH502 06710T0006 HOLDER FUSE EYF 52BC FH5...

Page 15: ...M546 A5A W045012 SPEC NO O R NO...

Page 16: ...0 IF AGC 63 48 DELAY ADJ 56 VCO RF AGC VIDEO DET AFT VIDEO MUTE DEFEAT AFT OUT CLAMP VIDEO TONE DELAY 55 5 7Vreg 41 RESET 42 33 39 46 13 POWER ON CONTROL RGB MATRIX CONTRAST HPF ACC KILLER DET ACC DET...

Page 17: ...M 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 DEEM NC1 Y C MIX...

Page 18: ...N OPERATION DECK BLOCK DIAGRAM X_RAY SDA SCL OSD_R CTL SD_VIDEO CTL V REC_ST_H VD OSD_G AFT_M OSD_B OSD_BLK HD Y C AUDIO HEAD AMP IN OUT TV CAPSTAN DD UNIT MICRO MOTOR TV_POWER H FF REW L 97 73 CTL AM...

Page 19: ...811 C751 C752 C755_1 R766 R754 R761 R793 W802 R772 W001 C779 R775 R776 R777 C781 J701_1 R773 R774 R771 W002 W003 W004 W005 W006 W007 W008 R778 W814 W009 W815 CD352 CD757 CD351_1 W812 C701 W805 PRINTED...

Page 20: ...49 W151 W152 W153 W154 W156 W158 TP1002 W159 W160 W161 W162 W163 CP851A W164 W165 W166 CP851B D606 W814 D1001 VR502 C510 C408 W167 W168 R515 W169 IC502 D506 R503 D502 W171 W175 W176 W177 W178 W181 W18...

Page 21: ...17 C1014 R662 R608 C623 R1077 R4016 R1002 C627 C660 C658 R647 Q1023 R1039 C1072 R1064 C661 R646 R643 R652 R648 R649 R642 R641 C1063 R1011 C1002 R1003 C1005 R1018 R1010 C1066 R1046 R1004 R1001 C1074 R4...

Page 22: ...8 49 5 50 51 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 81 82 83 84 85 86 87 88 89 9 90 91 92 93 94 95 96 97 98 99 L4004 2623003 15 6KHZ TRAP 1 2 3 4...

Page 23: ...9 9 90 91 92 93 94 95 96 97 98 99 TP1002 JWF 50K 1 H SW CP1006 IMSA 9604S 04Z14 1 2 3 4 DURING PLAYBACK MEASURED WITH THE DIGITAL TESTER NOTE THE DC VOLTAGE AT EACH PART WAS PLAYBACK VIDEO SIGNAL DEGA...

Page 24: ...03 173979 4 1 2 3 4 DURING PLAYBACK MEASURED WITH THE DIGITAL TESTER NOTE THE DC VOLTAGE AT EACH PART WAS PLAYBACK VIDEO SIGNAL AUDIO SIGNAL REC AUDIO SIGNAL PB SOUND_GND SOUND SP_OUT AT 5V INT MONI B...

Page 25: ...KA C646 22 16V KA C649 1 50V KA C679 470 10V YK C612_1 470 10V YK C662 10 16V KA C678_1 220 35V YK C648 0 1 50V KA C659 47 16V KA C655 47 16V KA C632 1 50V KA Q604 2SD400E REG Q603 2SC2120Y REG Q606 2...

Page 26: ...JECT TO CHANGE WITHOUT NOTICE NOTE THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME C351 2 2 50V KA C354 2200 10V YK C301 0 0047 B C353 0 1 B R357 5 6K R359 47K R353 68K R352 4 7K C355 10 16V KA C356...

Page 27: ...C522 1 50V KA C507 470 200V UP C523 470 35V MHE C521 220 160V PR C511 470 25V YK C518 470P 500V B C515 0 001 B C554 0 0022 B C516 470P 500V B C506 0 1 250V ECQUL C502 0 0022 2KV B C503 0 0022 2KV B C5...

Page 28: ...P C424 0 0068 1 6KV ECWH C417 560P 500V B C416 22P CH R440_2 51K R454 47K 1 4W R416 82K R413 3 3K R414 18K R417 330 1 2W R419 560 1 2W R421 820 1 2W R460 100 1 4W R401 470 R402 47K R453 120K 1 4W R490...

Page 29: ...E PARTS MARKED BY CAUTION OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE NOTE THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME C805 100P CH C819_1 0 0022 2KV B C811 560P B C810 560P B C801 0 0022 2K...

Page 30: ...757 CH2A019A 1 10 2 3 4 5 6 7 8 9 DANS LA NOMENCLATURE DES PIECES N UTILISER QUE CELLS DECRITES DANGEREUSES AN POINT DE VUE SECURITE ETANT LES PIECES REPAREES PAR UN ATTENTION DESCRIBED IN PARTS LIST...

Page 31: ...ED IN PARTS LIST ONLY CRITICAL FOR SAFETY USE ONES ARE SINCE THESE PARTS MARKED BY CAUTION Q101 RPT 38PB113 BOT SENSOR OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE NOTE THIS SCHEMATIC DIAGRAM IS T...

Page 32: ...ED KEY_B GND SP_COM CP4001 CP1006 CP4002 PCB030 OPERATION PCB TO OS753 COMMAND TRANSMITTER TM101 FROM TM101 OS753 Vout B GND NC NC NC NC NC CD1002 MOTOR_GND FRONT_VIDEO_IN FRONT_AUDIO_IN SOUND_GND SOU...

Page 33: ...ether there are the portions which are deteriorated around the serviced places serviced or not Check the insulation between the antenna terminal or external metal and the AC cord plug blades And be su...

Page 34: ...OUT MICON OPERATION DECK PRINTED CIRCUIT BOARDS OPERATION DECK SYSCON CRT SCHEMATIC DIAGRAMS Y C AUDIO HEAD AMP MICON IN OUT CHROMA IF SOUND AMP POWER DEFLECTION CRT OPERATION DECK INTERCONNECTION DIA...

Page 35: ...Width 12 65mm 1 2 Inch VHS C type video cassette tape 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...

Page 36: ...SP Mode 220 Lines G 22 Audio Signal Input Level Line dB Kohm RCA 8 dB 50 Kohm Output Level Line dB Kohm RCA dB Kohm 0dB 0 775 V rms S N Ratio at SP Mode 38 dB Harmonic Distortion 1 5 1KHz Frequency R...

Page 37: ...e Counter G 32 Protector Power Fuse Dew Sensor G 33 Regulation Safety UL CSA SAA SI CE SEV BS NF NEMKO FEMKO DEMKO IEC65 SEMKO NZ HOMOLO SABS CNS SISIR NOM AS3159 DENTORI UNE GOST NONE Radiation FCC D...

Page 38: ...icture Audio Sap On Off Auto Repeat On Off System Set Up Clock Set Calendar 12H 24H Language Auto Clock On Off Standard Time Daylight Saving Time G CODE or SHOWVIEW or PLUSCODE No Entry Clock Date CH...

Page 39: ...Center AC Cord Guarantee Card AV Cord 2Pin 1Pin Warning Sheet Registration Card W Guarantee Card Circuit Diagram PTB Sheet Antenna Change Plug 300 ohm to 75 ohm Antenna Plug Service Facility List Eur...

Page 40: ...p 4 Input Select F FWD 5 Audio Select Rew 6 TV VCR Timer Rec 7 Pause Still REC OTR 8 Slow Auto Tracking 9 Slow Speed Up Tracking Up Set Menu Slow Speed Down Tracking Down Set Set Up Skip Search Counte...

Page 41: ...IT CONTAINS HIGH VOLTAGE BEFORE ATTEMPTING TO REMOVE OR REPAIR ANY PCB UNPLUG THE POWER CORD FROM THE AC SOURCE 1 2 3 Remove the Anode Cap Refer to REMOVAL OF ANODE CAP Disconnect the following conne...

Page 42: ...2 Remove the Deck Shield Plate in the direction of arrow A Disconnect the following connectors CP1004 CP1005 CP1006 CP4001 CP4002 and CP4003 Remove the Deck Chassis in the direction of arrow B Remove...

Page 43: ...assis Main Chassis Cassette Side L Cassette Side R Locker R Fig 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 Screw Torque 5 0 5kgf cm B2 1...

Page 44: ...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 45: ...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 Spri...

Page 46: ...tan DD Unit 1 2 3 Screw Torque 5 0 5kgf cm Fig 2 16 2 17 MIDDLE GEAR MAIN CAM Refer to Fig 2 17 A Remove the Polyslider Washer 1 then remove the Middle Gear Remove the E Ring then remove the Main Cam...

Page 47: ...e the Loading Gear Spring 2 When you install the Clutch Actuator install as shown in the circle of Fig 2 19 C Refer to Fig 2 19 C Fig 2 19 C Clutch Actuator NOTE Do not touch the roller of Guide Rolle...

Page 48: ...p up the sides of the Rubber Cap in the direction of the arrow and remove one side of the support Refer to Fig 3 2 2 GND on the CRT Screwdriver Alligator Clip Support CRT GND on the CRT Rubber Cap CRT...

Page 49: ...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 50: ...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 51: ...o the center position NOTE Also can be adjusted by pressing the ATR button for more than 2 seconds during PLAY VOL MIN 5 POWER ON total hours and PLAY REC total hours are displayed on the screen Refer...

Page 52: ...ith the tape Clean the rubber and parts which the rubber touches Replace when rolling becomes abnormal Clean the Head CONFIRMATION OF USING HOURS POWER ON total hours and PLAY REC total hours can be c...

Page 53: ...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 54: ...27 29 00 00 00 00 00 1 2 Fig 1 ADDRESS is now selected and should blink Using the SET or keys on the remote step through the ADDRESS until required ADDRESS to be changed is reached Press ENTER to sele...

Page 55: ...odel JG001P Hi Fi Audio For 4 heads Hi Fi model JG001S X Value Adjustment For 4 heads model JG002B VSR Torque Brake Torque S Reel T Reel Ass y JG002E Brake Torque T Reel Ass y JG002F VSR Torque Brake...

Page 56: ...ght Adjustment 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...

Page 57: ...is adjusted 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...

Page 58: ...ust the 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 Play...

Page 59: ...NTS 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 Br...

Page 60: ...Tracking button until the arising to the down of Head Switching Pulse becomes 6 5 0 5H Refer to Fig 2 1 A B Press the Tracking Auto button 6 5H 6 5H Fig 2 1 B CH 2 CH 1 CH 1 CH 2 Fig 2 1 A 2 BASIC ADJ...

Page 61: ...on the remote control to select V SIZE Press the VOL UP DOWN button on the remote control until the rectangle on the center of the screen becomes square Receive a broadcast and check if the picture is...

Page 62: ...Receive the color bar pattern RF Input Connect the synchro scope to TP801 Activate the adjustment mode display of Fig 1 1 and press the channel button 15 on the remote control to select COLOR Press th...

Page 63: ...D2 4 ELECTRICAL ADJUSTMENTS 3 ELECTRICAL ADJUSTMENT PARTS LOCATION GUIDE SYSCON TU001 FOCUS VOLUME SCREEN VOLUME FB401 CP351 VR502 FH503 TP1001 CP1003 TP1002 TP4001 J801 TP801 TP803 CRT...

Page 64: ...erforming adjustments in section 4 1 1 2 3 4 5 Receive the green raster pattern from color bar generator Adjust the pair of purity magnets to center the color on the screen Adjust the pair of purity m...