Memorex MVT2195B Service Manual

SERVICE MANUALDesign and specifications are subject to change without notice.MVT2195BCOLOR TELEVISION/VIDEO CASSETTE RECORDERORIGINALMFR’S VERSION A

MECHANICAL REPLACEMENT PARTS LISTREF. NO. PART NO. DESCRIPTION101 A546A5A720 CABINET,FRONT ASS'Y102 701WPJA839 CABINET,FRONT103 711WPA0114 PLATE,

CHASSIS REPLACEMENT PARTS LISTREF. NO. PART NO. DESCRIPTION REF. NO. PART NO. DESCRIPTION300 A545A0A420A DECK ASSY A545A0A420A 501 8107126A04 SCREW,TA

ELECTRICAL REPLACEMENT PARTS LISTREF. NO.PART NO. DESCRIPTION REF. NO.PART NO. DESCRIPTIONRESISTORS DIODES ! R415 R426T22R2F R, METAL 2.2 OHM 1/2W

ELECTRICAL REPLACEMENT PARTS LISTREF. NO.PART NO. DESCRIPTION REF. NO.PART NO. DESCRIPTION RESISTORS TRANSISTORSD4005 D97U06R81B DIODE, ZENER MTZJ6.8

ELECTRICAL REPLACEMENT PARTS LISTREF. NO.PART NO. DESCRIPTIONMISCELLANEOUS ! CP501 0697320039 CORD, UX CONNECTOR THL-P03P-B1 ! CP502 069W420029 CONN

M546-A5AW045012SPEC.NO.O/R NO.

RY501AC INTV BLOCK DIAGRAMMICON/OPERATION/DECKQ806BLUE AMPQ805GREEN AMPQ804RED AMPQ405H-DRIVEQ406H. OUTPUT DY7V. OUTPUT IC IC401 LA780403THERMAL

Y/C/AUDIO/HEAD AMP/IN/OUT BLOCK DIAGRAME-3E-4X40013.579545MHz381009897254296288583825746464459553019141393213 80 76H.AMPSWREC AMPCP4001432SP-CH1 (R)SP

E-5E-66656 V-REC-ST-H CVIN27769089VCR-POWERCAP-PWMDRUM-PGDRUM-FGX-OUT (12MHz)3935XC-IN (32MHz)85POWER_FAIL_L72IIC-DATA1TIMER SYSCON MICON ICIC1001 O

OS753J351D791D793D792SW795SW793SW792SW794SW791SW799SW798SW796SW797SW751C382R351R350_1W811C751C752C755_1R766R754R761R793W802R772W001C779R775R776R777C78

SERVICE MANUALMVT2195BCOLOR TELEVISION/VIDEO CASSETTE RECORDERCAMFR’S VERSIONF20EL82EP14BDM2003REVISION 1MFR’S VERSION CPlease file this revision with

W001C1032R1005IC1003Q4005Q4003Q4002Q4001Q4006T4001C4011C4026C4021C4023C4031C4037C4039C4070C4033C4045D4207CF601X602IC1099L601L605C4015C4004C4017C4016L4

IC1001R1087R1083Q1002C4018R4022R4023R4001IC4001R1066C4003C1033C1024IC601C1030C616C622C626C634R4002R4003C4005R4010C4006C4074R4011R4020R4025C4020R4027R4

ABC D E F GHABC D E F GH2134567821345678OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICENOTE:THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIMEX40013.57

ABC D E F GHABC D E F GH2134567821345678R.SIGNALG.SIGNALB.SIGNALD100511E1-EICD10021SS133D101311EQS04ND100111E1-EICDANS LA NOMENCLATURE DES PIECESN’UTI

ABC D E F GHABC D E F GH2134567821345678B4201BL02RN1-R62B.SIGNALCP353_1173979-71234567CP757_21-173979-011023456789D4202SB10-03A3OF PRINTING AND SUBJEC

ABC D E F GHABC D E F GH2134567821345678R.SIGNALG.SIGNALOUTOUTGININCF601SAF45MFY220ZRSAW FILTER12345TU601 TECC1040PG32A110111213141523456789IC601M6120

ABC D E F GHABC D E F GH2134567821345678DANS LA NOMENCLATURE DES PIECESN’UTILISER QUE CELLS DECRITESDANGEREUSES AN POINT DE VUE SECURITEETANTLES PIECE

ABC D E F GHABC D E F GH2134567821345678R5292.7K 1/4W+-1%D5211SS133HS502763WSA0004R5012.2 7WVR502330+B ADJICP502251005RT5A125VICP505251004RT4A125VICP5

ABC D E F GHABC D E F GH2134567821345678BGR1168109175V801A48AGY13X77T401305Y00212346Q4062SD2627LS-CBC11H.OUTPUTCD8018M82025AIC401 LA78040V.OUTPUT IC12

ABC D E F GHABC D E F GH2134567821345678S801FJ801CVT3275-51021101156789TM101HG-23A04R.SIGNALG.SIGNALTHE DC VOLTAGE AT EACH PART WAS MEASURED WITH THE

Change of MICRO MOTORDIFFERENCESMFR'S VERSION A MFR'S VERSION CREF. NO.PART NO. DESCRIPTION PART NO. DESCRIPTIONM2003 1589V11007 MICRO MOTOR

ABC D E F GHABC D E F GH2134567821345678GNDB+VoutOS753PIC-28143TH5123SW751SKHVBED010POWER ON/OFFSW799SKHVBED010CH DOWNSW798SKHVBED010CH UPSW796SKHVBED

ABC D E F GHABC D E F GH2134567821345678S105S106S103 S104S101 S102DANS LA NOMENCLATURE DES PIECESN’UTILISER QUE CELLS DECRITESDANGEREUSES AN POINT DE

ABC D E F GHABC D E F GH213456782134567876543217654321109109876543218765432110910987654321876543215432154321CP100565432165432121CP40038765432187654321

SERVICING NOTICES ON CHECKING6. AVOID AN X-RAY1. KEEP THE NOTICESAs for the places which need special attentions,they are indicated with the labels or

CONTENTSSERVICING NOTICES ON CHECKING ...HOW TO ORDER PARTS ...

GENERAL SPECIFICATIONSA3-1G-1.Outline of the Product 19 inch(480.0mmV):Measured diagonallyColor CRT 90 degree deflection 3 -Speed 1/2&qu

GENERAL SPECIFICATIONSA3-2G-17.Tuner and Receiving channel 1Tuner System 2Tuner SystemTuner : Contactless Electric tunerOscar(W/O HYPER) Oscar(W/ HYPE

GENERAL SPECIFICATIONSA3-3G-26.Power Consumption: 86 W at AC 120 V 60 Hz -- W at DC --- V(at TV and VCR ON)Stand by: 5

GENERAL SPECIFICATIONSA3-4G-38.TerminalsVHF/UHF Antenna Input Din Type F-Type France TypeFront Video Input (RCA ø8.3)Front Audio Input

GENERAL SPECIFICATIONSA3-5G-44.CartonMaster Carton: Need No NeedContent: ---- SetMaterial: ---- / ---

The following waveforms were measured at the point of the correspondingballoon number in the schematic diagram.NOTE:H-1WAVEFORMSY/C/AUDIO/HEAD AMPDEFL

GENERAL SPECIFICATIONSA3-6G-49.Remote Control Unit: RC-CGGlow in Dark Remocon Yes NoPower Source: D.C 3 V Battery UM - 4 x 2Control Key: Tot

DISASSEMBLY INSTRUCTIONS1. REMOVAL OF MECHANICAL PARTSAND P.C. BOARDS1-1: BACK CABINET (Refer to Fig. 1-1)1.2.3.4.Remove the 6 screws 1.Remove the scr

DISASSEMBLY INSTRUCTIONS1-5: SYSCON PCB (Refer to Fig. 1-5)1.2.Remove the screw 1.Remove the Syscon PCB in the direction of arrow.1Syscon PCBFig. 1-5D

DISASSEMBLY INSTRUCTIONS2. REMOVAL OF DECK PARTS2-1: TOP BRACKET (Refer to Fig. 2-1)Remove the 2 screws 1.Slide the 2 supports 2 and remove the Top Br

DISASSEMBLY INSTRUCTIONS2-6: LINK ASS'Y (Refer to Fig. 2-6)Set the Link Ass'y to the Eject position.Remove the (A) side of the Link Ass&apos

DISASSEMBLY INSTRUCTIONS2-11: S REEL/T REEL (Refer to Fig. 2-11)Remove the S Reel and T Reel.Remove the 2 Polyslider Washers 1.1.2.NOTEDo not touch th

DISASSEMBLY INSTRUCTIONS12E-RingMiddle GearMain CamPinch Roller CamJoint GearP5 CamFig. 2-17-ANOTEWhen you install the Pinch Roller Cam, P5 Cam and Ma

DISASSEMBLY INSTRUCTIONS2-19: LOADING GEAR S/T ASS'Y (Refer to Fig. 2-19-A)1.2.3.4.5.6.7.8.9.12Capstan Brake SpringCapstan Brake Ass'yMain R

3. REMOVAL OF ANODE CAPRead the following NOTED items before starting work.After turning the power off there might still be a potentialvoltage that is

KEY TO ABBREVIATIONSABCDEFGHA/CACCAEAFCAFTAFT DETAGCAMPANTA.PBAPCASS'YATAUTOA/VBGPBOTBPFBRAKE SOLBUFFB/WCCASECAPCARRCHCLKCLOCK (SY-SE)COMBCONVCPM

21 50.0V 20µs/divThe following waveforms were measured at the point of the correspondingballoon number in the schematic diagram.NOTE:H-2WAVEFORMS

KEY TO ABBREVIATIONSSTUVXYSYNCSYNC SEPTRTRACTRICK PBTPUNREGVVCOVIFVPV.PBVRV.RECVSFVSRVSSV-SYNCVTX'TALY/C:::::::::::::::::::::SynchronizationSync

C2-1SERVICE MODE LISTThis unit provided with the following SERVICE MODES so you can repair, examine and adjust easily.To enter SERVICE MODE, unplug AC

C3-1PREVENTIVE CHECKS AND SERVICE INTERVALSThe following standard table depends on environmental conditions and usage. Unless maintenance is properlyc

C3-2PREVENTIVE CHECKS AND SERVICE INTERVALSCLEANINGNOTEAfter cleaning the heads with isopropyl alcohol, do notrun a tape until the heads dry completel

NOTE FOR THE REPLACING OF MEMORY ICIf a service repair is undertaken where it has been required to change the MEMORY IC, the following steps should be

(For 2 heads model)VHS Alignment TapeJG001JG001AJG001QJG001TSERVICING FIXTURES AND TOOLSJG100A Torque Tape(VHT-063)JG024AJG022 Master PlaneJG153 X Val

D1-1MECHANICAL ADJUSTMENTS1. CONFIRMATION AND ADJUSTMENTRead the following NOTES before starting work.••Place an object which weighs between 450g~500g

D1-2MECHANICAL ADJUSTMENTS1-4: CONFIRMATION OF VSR TORQUEOperate within 4~5 seconds after the reel disk begins toturn.Install the Torque Gauge (JG002F

D1-3MECHANICAL ADJUSTMENTS2-3:2-2:When the Tape Running Mechanism does not work well,adjust the following items.CONFIRMATION AND ADJUSTMENT OF AUDIO/C

D1-4MECHANICAL ADJUSTMENTS3. MECHANISM ADJUSTMENT PARTS LOCATION GUIDE567891012341. Tension Adjust2. Tension Arm3. Guide Roller4. P1 Post5. Audio/Cont

MECHANICAL EXPLODED VIEWI-1124209209210209123209209209PCB110(CRT PCB)133203203203203L503V801114J801PCB030(OPERATION PCB)201102104105103109107106108202

D2-1ELECTRICAL ADJUSTMENTS1. BEFORE MAKING ELECTRICALADJUSTMENTSRead and perform these adjustments when repairing thecircuits or replacing electrical

D2-2ELECTRICAL ADJUSTMENTS2-3: RF AGC1.2.3.4.Receive a 70dB monoscope pattern.Connect the digital voltmeter between the pin 5 ofCP351 and the pin 1 (G

D2-3ELECTRICAL ADJUSTMENTS2-13: SUB TINT1.2.3.4.5.6.Receive the color bar pattern. (RF Input)Connect the synchro scope to TP803.Activate the adjustmen

D2-4ELECTRICAL ADJUSTMENTS3. ELECTRICAL ADJUSTMENT PARTS LOCATION GUIDESYSCONTU001FOCUS VOLUMESCREEN VOLUMEFB401CP351VR502FH503TP1001CP1003TP1002TP400

D2-5ELECTRICAL ADJUSTMENTS4. PURITY AND CONVERGENCEADJUSTMENTSNOTE1.2.3.Turn the unit on and let it warm up for at least 30minutes before performing t

A119211128129127208208202132118212208202202122212213206207204115TU601130115117FB401131117120204207125120121PCB010(SYSCON PCB)126116117205MECHANICAL EX

515360I-3CHASSIS EXPLODED VIEW (TOP VIEW)321348507H500150630530430134731631350831533851231036135936835736630636635836535136332332436235332033531934931

CHASSIS EXPLODED VIEW (BOTTOM VIEW)I-4AB302M2001511340514341343511503345339342504332346311333346312331514344AAAAAAADADAAAAAAAAAAACAA307354326327322513