Sharp VC-MH80 Service Manual
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Sharp VC-MH80 Service Manual

Sharp VC-MH80 Service Manual

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Summary of Contents for Sharp VC-MH80

  • Page 1: Table Of Contents

    CONTENTS...
  • Page 2 VC-MH80 PRECAUTIONS IN PART REPLACEMENT When checking the soldering side in the tape travel mode, make sure first that the tape has b;en loaded and then turn over the PWB with due care to the primacy power circuit. Make readjustment, if needed after replacement of part, with the mechanism and its PWB in position in the main frame.

  • Page 3: Specifications

    Video signal: 240 min max. with SHARPE-120 tape (LP mode) Recording/playing time: 480 min max. with SHARP E-240,tape &P-mode) 480 min max. with SHARP T-.160 tape (EP.mode) Tape width: 23.39 mm/s (PAL SP) 11.70 mm/s (PAL LP) Tape speed: 33.35 mm/s(NTSCSP) 16.68mm/s(NTSC LP) 1 l.lZmm/s(NTSC EP)

  • Page 4: Disassembly And Reassembly

    2. DISASSEMBLY AND REASSEMBLY TOP CABINET OPERATION PWB socket 0. Remove 2 clips do, . screws 0. FRONT PANEL sockets 0. Take out 3 holders TIMER PWB t h e FFC ,from the sockets @ and @ . Remove 3 clips @. TOP CABINET...
  • Page 5 MECHANISM/ Lift the antenna terminal block MAIN PWB and take the mechamism/main ASSEMBLY screws @from below the main PWB assembly out of the main frame. Take out the socket, @ frame. Be careful not to hit the Remove 2 screws @ and take REC TIP switch located below out the tuner holder.
  • Page 6 HEAD AMPLIFIER Rmove 1 screw @ and detach the head.amplifier unit. Remove ‘ 1 screw a. A N T E N N Disconnect the FFC from the MECHANISM socket @ . Remove 2 screws @ sockets @ . CASSETTE D i s c o n n e c t t h e c o n n e c t o r s Lift the mechanism chassis/ CONTROLLER from 2 sockets @.
  • Page 7 MOUNTING THE CASSETTE CONTROLLER Initial setting is indispensable before placing the cassette controller in the mechanism. The initial is made in two ways; electrical and mechanical. Electrical setting: of the plug which is on the timer PWB. (1) Make a short-circuit between TP5001 and TP5002 (2) Plug in the AC power cord and make sure the mechanism is in the initial setting position (*l) .

  • Page 8: Function Of Major Mechanical Parts

    Function Function Reverse guide Erase the whole records on the tape in the recording Pulls out the tape and controls the tape drive train mode. heightwith the upper and lower guides. Tension arm ass’ y Pinch roller lever ass’ y Detects the tension of tape while running, and brakes Press-fits the tape to the capstan during tape running.
  • Page 9 FUNCTION OF MAIOR MECHANICAL PARTS (BOlTOM VIEW) Loading Gear Capstan R e e l B e l t Slow Brake Lever Master Cam assett Housing Drive Gear Connect Gear Clutch Gear Connect Arm R e e l Pulley Function Function Reel pulley Slow brake lever Gets in contact with the capstan D.D.

  • Page 10: 4, Adjustment, Replacement And Assembly Of Mechanical Units

    VC-MH80 Here we will describe a relatively simple service We are sure that the easy-to-handle tools listed w o r k i n t h e f i e l d , n o t r e f e r r i n g t o t h e m o r e...
  • Page 11 VC-MH80 Configuration Remarks P a t - t N o . code Jig Item Thisscrewdriver is used for adjusting JiGDRiVERH-4 AP Special Bladed Screwdriver the guide roller height. This is used to screw down resin- made parts: the specified torque is 5...
  • Page 12 VC-MH80 MECHANICAL PARTS REQUIRING PERIODICAL INSPECTION 1000 1 5 0 0 2 0 0 0 Abnormal rotation or Guide roller ass’ y significant vibration Supply impedance roller requires replacement. Clean with pure high Supply impedance roller Lateral noises quality isopropyl alcohol.
  • Page 13 REMOVAL AND REASSEMBLY OF CASSETTE HOUSING CONTROL ASSEMBLY 1. Set the cassette ejected condition in the cassette Drive angle of cassette control eject mode. 2. Unplug-the recorder from the main source. 3. Follow the procedures below in the specified or- der.
  • Page 14 VC-MH80 REPLACEMENT AND HEIGHTCHECKING Reassembly (Supply reel disk) AND ADJUSTMENT OF REEL DISKS Removal (Supply and Take-up reel disks) 2. Install a new supply reel disk onto the shaft. 1. Remove the cassette housing control assembly. 3. Replace the tension band around the supply reel 2.
  • Page 15 VC-MH80 Adjustment Check that the reel disk is lower than par-t A but higher than part B; If~the height is not correct, 1. If the take-up torque is outside the range, clean readjust the reel disk height by changing the the capstan D.D.
  • Page 16 CHECKING AND.ADJUSTMENT OF TAKE-UP Adjustment TORQUE IN-VIDEO SEARCH REWIND MODE 1. If the take-up torque is outside the range, clean Remove the cassette housing control assembly. the capstan D.D. motor pulley, reel belt and reel pulley with cleaning liquid, then recheck the Make a .short-circuit between TP5001 and torque.
  • Page 17 CHECKING THE FAST FORWARD BACK Note: TENSION Remove the cassette housing control assembly. reel disk. If it is not secure, the measurement will be incorrect. Make a short-circuit between TPSOOI a n d , TP5002, both located on the timer PWB. Now’ weight exerted on the reel disk.
  • Page 18 2. Visually check to see if the left end of the tension pole is in alignment with the line 0.2 mm left of the center line of the 51 roller. Readjust as re- quired in the following steps. Tension pole Capstan shaft Tension gauge adapter Make the adjustmentwith the...
  • Page 19 adjusted with a cassette in place because the cam will be located below the cassette. Repeat a series of steps; empty loading, adjustment, cassette placement and position checking. tension pole to the right (in the black-arrow direction). Turn it counterclockwise to move the Cassette torque tension pole to the left (in the white-arrow meter...
  • Page 20 VC-MH80 CHECKING THE BRAKE TORQUE Checking the brake torque at the take-up side Checking the brake torque at the supply side Torque Supply reel disk Remove the cassette housing control assembly. Remove the cassette housing control assembly. Make a short-circuit between TP5001 and Make a short-circuit between TPSOOl and TP5002, both located on the timer PWB.
  • Page 21 REPLACEMENT OF AK (Audio/Control) HEAD 1. Remove the cassette housing control assembly. 2. Place the unit in the unloading mode, and un- plug the power cord. 1. Loosen the tilt adjusting screw 0. A/C head arm 2. Remove the azimuth adjusting screw 8. 3.
  • Page 22 VC-MH80 HEIGHT ADJUSTMENT OF REVERSE GUIDE head height rough adjustment] [Height adjustment of reverse guide] Box driver Reverse guide hei Reverse guide height adjusting jig Reverse guide adjusting Jig In the tape load mode, make adjustment at the adjusting nut by l/6 turn counterclockwise.
  • Page 23 ADJUSTMENT OF TAPE DRIVE TRAIN Remove the cassette housing control assembly. Make a short-circuit between TP5001 and TP5002, both located on the timer PWB. Now turn on the power. Check and adjust the position of the tension pole. (See page 18.) Check and adjust the video search rewind back tension.
  • Page 24 VC-MH80 PB CHROMAenvelope (TP2201) Box driver Azimuth screw adjusting screw CH-2 Head switching pulse (TP2202) 8. Adjustment of tape drive train and X-Position. 7. Adjustment of AIC head height and azimuth a) Connect the oscilloscope to the test points a) Connect an oscilloscope to the audio output (TP2201) for PB CHROMA envelope output.
  • Page 25 VC-MH80 1. Mount the capstan motor on the mechanism that a flat response is obtained on the enve- chassis making sure not to allow the capstan shaft to hit the mechanism chassis, and attach it guide roller setscrew in the unloading mode.
  • Page 26 VC-MH80 ASSEMBLE THE MECHANISM’ S PARTS RE- STEPS BELOW. 1. Assembling the pinch roller assembly and the Fit the point of the pinch drive cam to the fourth tooth pinch drive lever,and pinch drive cam (on the front of the mechanism...
  • Page 27 VC-MH80 Pinch Roller/ Pinch Double Action Lever...
  • Page 28 1. Make sure that the loading gear is at the point mechanism chassis). (1) as shown below. 2. Place the shifter in position, keeping in mind the 7 insertion points and the five relief points. 3. For the phase matching at the insertion point (l), see the point (2) as shown below.
  • Page 29 3. Mounting the master cam (on the back Note: of the mechanism chassis). See the figure below for the phase matching be- (1) Make sure beforehand that the shifter is at the tween the master cam and the cassette control point as shown below.
  • Page 30 the connection gear, slow brake an 3 loading motor assemblies (on the back of the mechanism chassis). Note: (1) Assemble the connect gear. Let the slow brake leg out of the’ front of the (2) Assemble the slow brake. mechanism chassis. Catch the spring to the take-up (3) Assemble the loading motor unit.
  • Page 31 REPLACEMENT OF LOADING MOTOR Removal Remove 2 screws. Turn the adjusting screw to ensure the gap. Press-fit the loading motor pulley with a force of less than 98N (10 kgf). Be sure that the pulley is 11.7 + 0.05 mm away from the motor. ment loading motor as shown above (figure 4- 51 .).
  • Page 32 ASSEMBLY OF CASSETTE HOUSING Apply grease Fix the drive angle ass’ y to the drive gear R as shown in the figure. Drive gear R...
  • Page 33 drive Align the gear’ s round hole with the synchro gear’ s triangular (A> symbol. Do this alignment for both the drive gears. Note: Do not over-turn both of the drive gears when the phase has been matched. These gears are partially toothless and might come out of mesh with the synchro gear.

  • Page 34: Electrical Adjustment

    VC-MH80 5. ELECTRICAL ADJUSTMENT Notes: Before the adjustment: Electrical adjustments discussed here are often required after replacement of electronic components and mechanical parts such as video heads. Check that the mechanism and all electric components are in good working condition adjustments, otherwise adjustments can not be completed.
  • Page 35 VC-MH80 SERVO CIRCUIT ADJUSTMENT ADJUSTMENT OF PAL SYSTEM HEAD SWITCHING POINT 6.5 +0.5H (lines) -i V-sync. CH-1 Alignment tape (VROCPSV) Cassette TP2202 (H. SW. P.) to CH-1 Test point VIDEO OUT jack to CH-2 (CH-1 trigger slope switch at ADJUSTMENT OF PAL SYSTEM SP/LP SLOW TRACKING PRESET side.)
  • Page 36 VC-MH80 ADJUSTMENT OF PAL SYSTEM FV (False Vertical Sync) OF STILL PICTURE Measuring instrument Mode Playback still Self-recorded tape (SP mode) Cassette (See Note below) Control Tracking control buttons ( +) or Specification No vertical jitter of the picture 1. Play a cassette which was recorded by the unit in SP mode.
  • Page 37 ADJUSTMENT OF NTSC SYSTEM HEAD SWITCHING POINT CH-1 :lV/div 5Opldiv Dual-trace oscilloscope and Measuring instrument Mode I Playback I Alignment tape (VROATSV) Cassette 6.5 + 0.5H (lines) ____)! V-sync. CH-1 TP2202 (H. SW. P.) to CH-1 Test point VIDEO OUT jack to CH-2 side.) ADJUSTMENT OF NTSC SYSTEM SP/LP SLOW TRACKING PRESET...
  • Page 38 VC-MH80 ADJUSTMENT OF NTSC SYSTEM FV (False Vertical Sync) OF STILL PICTURE Colour TV monitor Measuring instrument Mode ‘ Playback still Self-recorded tape (SP mode) Cassette (See Note below) Tracking control buttons ( +) or Control No vertical jitter of picture Specification 1.
  • Page 39 SECAM colour bar signal to the Measuring Oscilloscope VIDEO IN jack and set the unit in recording instrument mode. (VC-MH80 ONLY) Make sure so that the amplitude of the chroma E-E or Record Mode (cyan) portion is specified as shown in Figure 5-6...
  • Page 40 ADJUSTMENT OF VCO Measuring DC volmeter, Monitor TV CHECKING OF,PLAYBACK LEVEL instrument Osci I loscope Measuring instrument Mode Recording or E-E Mode Record/Playback input signal EIA colour bar (1 .OVp-p) EIA colour bar (1 .OVp-p) Input signal Test point VIDEO OUT jack Test point Control 1.0 + O.lVp-p...
  • Page 41 VC-MH80 Hi-Fi -AUDIO CIRCUIT-ADJUSTMENT ADJUSTMENT FM CARRIER FREQUENCY IMPORTANT NOTES ON Hi-Fi SECTION Measuring Frequency counter 1. Though adjustment procedures are written for instrument the left channel, those for the right channel are basically the same. Mode E-E or REC mode -Words shown in the bracket “...
  • Page 42 VC-MH80 CHECKING OF LINEAR AUDIO PLAYBACK CHECKING OF Hi-Fi/NORMAL LEVEL RECORD/PLAYBACK LEVEL Measuring AC milli-voltmeter Measuring AC milli-voltmeter instrument instrument Mode Playback Mode Record/Playback Input signal Alignment tape. (VROCPZJS) Test point Specification I -12.0 + 2dBs Feed the audio signal shown in table to the left 1.

  • Page 43: Mechanism Operation Flow Chart And Troubleshooting Guide

    6. MECHANISM OPERATION FLOW CHART AND TROUBLESHOOTING GUIDE CASSETTE INSERTION + STOP This flowchart describes the outline of the mechanism’ s operation, but does not give its details. Cassette is ejected and loading motor stops. Turn off START SENSOR LEVER. Start sensor lever turns on.
  • Page 44 STOP + REUPIAY PLAY + VSR Press REaPLAY key. Press STILL key. Press PLAY key. Loading motorturns in Loading motor turns in normal direction and master counterclockwise and master reverse direction and master cam clockwise. cam counterclockwise. Slow brake Pinch pressing roller Release pinch roller.
  • Page 45 STOP + FF/REW STOP -KASSEl-TE EJECT Press EJECT key. Loading motor turn in reverse direction and master cam counter clockwise. normal or reverse direction, Capstan motor turns in reverse direction. Been detected. unloading Stop loading motor. No supply reel pulses outputted for counterclockwise in about 2 seconds.
  • Page 46 2. REUF’ LAY FAILURE (MODE RELEASE) 1. FFlRON FAILURE (NO TAPE WINDING) Press FF key. Is the master cam Does loading Is voltage applied Voltage supply at PB position ? motor operate ? to loading motor ? system in trouble. Does loading Is voltage applied Voltage supply...
  • Page 47 4. UNUSUAL SOUND IN EACH MODE 4-i) Unusual sound in cassette insertion and ejection mode Replace cassette control ass’ y. Check pinch roller drive cam, pinch roller drive Unusual sound heard with pinch lever and reverse guide for their actions. roller lever going up or down 7 Replace damaged one with new one.
  • Page 48 Check reel disk and main chassis. Thrust gap found at reel disk 7 Drive system out of contact with any part on main PWB? Turn capstan motor by hand. Replace capstan motor. Unusual sound heard 7 Check drive system’ s gears for damage.

  • Page 49: Troubleshooting

    7. TROUBLESHOOTING FLOW CHART NO.2 POWER TROUBLESHOOTTNG (2) FLOW CHART NO.1 POWER TROUBLESHOOTING (1) In case of Fuse (FQOl) blown out. No power. Check short-circuit or leak of D921 check D901 asa result of check, if Is the fuse good? Replace fuse.
  • Page 50 FLOW CHART NO.5 TlMER (1) TROUBLESHOOTING FLOW CHART NO.6 TIMER (2) TROUBLESHOOTTNG Key-in input is not received. The fluorescent display tube fails light up. Check switch contact. Is the supply voltage of 5V fed to contact? Check ATSV line. pin (18)of IC5001? Check all the terminals of IC5001 Is the supply negative voltage of Check negative voltage (AT-25V)
  • Page 51 FLOW CHART NO.8 CASSETTE CONTROL TROUBLESHOOTING (1) FLOW CHART NO.9 CASSETTE CONTROL TROUBLESHOOTlNG (2) A cassette tape is taken in, but ejected at once. A cassette tape is not taken in. Does the start sensor pulse at pin Fix or replace the cassette housing. (87) of IC701 change from a “L’...
  • Page 52 FLOW CHART NO.10 LOADING MOTOR AND EJECTTROUBLESHOOTING FLOW CHART NO.1 1 SYSTEM CONTROL TROUBLESHOOTING No power is turned on. Check RX001 and IC701, and all See FLOW CHART NO. 12. the way thru between them. C A P S T A N T R O U when the EJECT button is pressed? SHOOTING)
  • Page 53 FLOW CHART NO.12 CAPSTAN MOTOR TROUBLESHOOTING FLOW CHART NO.13 DRUM MOTOR TROUBLESHOOTING (1) Check IC705. Check IC705. Is the voltage more than about 1.3 Check between pin (40) of It701 pin (1) of MC connector? and all the way up to pin (6) of ME connector? connector.
  • Page 54 FLOW CHART NO.18 E-E MODE TROUBLESHOOTING FLOW CHART NO.19 RECORDMG MODE (LUMINANCE) TROUBLESHOOTING Recording is not possible. (E-E mode is possible.) No E-E signal. (Tuner input mode.) (Ext. input mode.) Check parts around pins (38). (39). (47) and (48) of lC20 1. ‘...
  • Page 55 Check serial data and clock at pins (14) and (15) of IC201. and (38) of IC201? FLOW CHART NO.21 RECORDING MODE (CHROMA) TROUBLESHOOTING (VC-MH80 ONLY) Recording is possible but without colour in SECAM mode. Is there a signal aa NO...
  • Page 56 Is the supply voltage of 5V fed Check PC5V and to pins (15), (21) and 9V fed to pin (46) of IC6301 1 FLOW CHART NO.24 PLAYBACK MODE (CHROMA) TROUBLESHOOTING (VC-MH80 ONLY) Replace IC6301. Playback is possible but without colour. (PAL mode is OK)
  • Page 57 FLOW CHART NO.26 Hi-Fi TROUBLESHOOTING (2) FLOW CHART NO.27 Hi-Fi TROUBLESHOOTING (3) Refer to the E-E system Refer to the E-E system troubleshooting chart. troubleshooting chart. Is playback envelope signal Is REC FM signal outputted at pin Replace IC6301. outputted at pin (21) of KS401 ? (14) (TP6301) of IC63Oi ? Check line between from pin (14) of IC6301 (TP6301) to pin (26) of...
  • Page 58 DESCRIPTION OF SHUlTLE FUNCTION 1. Description of operation. The shuttle system is designed to control the basic modes of the VCR with the use of shuttle ring. (SLOW PB) Fast Forward and Rewind (Unit) Stop the PB mode. Turn the ring clockwise or counterclockwise and release it (the shuttle ring returns to the center point), and the unit will be in the FF or REW mode.
  • Page 59 2. Shuttle ring key matrix outline Center point KEY2 KEY3 55009 TEMER D 5 0 0 6 55005 EJECT STILL D5005 SHUTTLE SWITCH SHUTTLE SHUTTLE SHUTTLE RING SW RING SW RING SW J3, J4 TEST D5003 SEG7 3. Shuttle control specifications 1) The FF and REW modes are continued with the ring at the center position.
  • Page 60 VC-MH80 Set position Initial position Center point Continued Continued Continued Center point (STOP) Continued Continued Continued 4) Play Mode PLAY Continued PLAY Continued Continued Continued 5) Still mode Center point (STILL) STILL Continued STILL Continued Continued Continued Continued When it is turned up to the F3 point and then released back to the center point, the unit continues the previous mode (F3 mode).
  • Page 61 VC-MH80 REPLACEMENT OF IC703 (E2PROM) When the IC703 (EZPROM) has been replaced, make the following reprogramming. Depending on models, the IC703 (EZPROM) has been factory adjusted for it’ s memory function. It’ s therefore necessary to reprogram the memory function for the model in question.
  • Page 62 FUNCTION MH200 MH80 JP31 NOP ................................30 NOP ................................29 NOP ................................28 NOP ................................27 VISS AD/E ................................26 NTSC SKEW ................................25 HEAD1 ................................

  • Page 63: Block Diagrams

    8. BLOCK DIAGRAM SERVO PROCESS BLECK DIAGRAM...
  • Page 64 VC-MH80...
  • Page 65 SIGNAL FLOW BLOCK DIAGRAM...
  • Page 66 VC-MH80...
  • Page 69 POWER CIRCUIT BLOCK DIAGRAM...
  • Page 70 SCHEMATIC DIAGRAM 2. SEMICONDUCTOR HEAT SINKS SHOULD BE The unit values in parentheses are the ones in and all signal.
  • Page 71 VC-MH80 9. CIRCUIT DIAGRAM AND PWB FOIL PAlTERN M A I N ..
  • Page 72 VC-MH80...
  • Page 74 VC-MH80...
  • Page 75 VC-MH80 MAIN CIRCUIT (2) (VC-MH90)
  • Page 76 VC-MH80...
  • Page 78 VC-MH80 I II...
  • Page 81 vc-I vc-I MAIN CIRCUIT (5)
  • Page 83 HEAD AMP CIRCUIT A U D I O H / A I C 0 6 4 0 I I I I...
  • Page 84 1 3 6 2 RN I 404...
  • Page 86 VC-MH80...
  • Page 87 VC-MH80 OPERATION/TIMER CIRCUIT (VC-MH90)
  • Page 89 VC-MH80 OSD CIRCUIT O S D...
  • Page 90 VC-MH80 0 5 9 0 3 B U F F E R...
  • Page 91 VC-MH80 SECAM CHROMA CIRCUIT (VC-MH80) 6 ’ ..
  • Page 93 MPX CIRCUIT (VGMH90)
  • Page 95 VC-MH80 VC-MHSO IF CIRCUIT ..P a r e n t h e s e s ( ..W i t h o u t P a r e n t h e s e s...
  • Page 96 VC-MH80 VC-MHSO...
  • Page 97 PWB FOIL PATTERN M A I N P W B...
  • Page 98 VC-MH80 VC-MHSO...
  • Page 99 VC-MH80 IF PWB REC TIP PWE...
  • Page 100 VC-MH80 HEAD AMP PWB REC TIP PWB TIMER PWB...

  • Page 101: Replacement Parts List

    “HOW TO ORDER REPLACEMENT PARTS” To have your order filled promptly and correctly, please furnish the following informations. TUNER AN6 ASSEMBLY RF Converter (VC-MH80) BB HOW TO IDENTIFY CHIP TRANSISTORS AND INTEGRATED CIRCUITS DIODES BY ITS MARKING...
  • Page 102 TRANSISTORS (Continued) TRANSISTORS (Continued) Q291 Q541 Q542 Q9907 Q9912 V S R N 1403///-l J R N 1 4 0 3 Q9915 DIODES D530 D531 D540 V H D I S S I 19//-l J lSS119 D542 V H D l S S l 19//-l J lSS119 D545 4 1 4 0 1 VSRNI 404///-l J R N 1 4 0 4 D701...
  • Page 103 VP-MK561 KOOOO -J 560uH V P - X F 1 8 1 K O O O O J 180uH(VC-MH80) A D 9 3 0 R H - E X 0 6 1 SGEZZ J Z e n e r D i o d e...
  • Page 104 VC-MH80 CAPACITORS (Continued) CAPACITORS (Continued) C213 VCKYCYI EFl53Z J 0.015 25V Ceramic C214 c511 C216 50V Electrolytic C512 2 5 V C e r a m i c M VCKYCY lEB223K J 0.022 25V Ceramic V C K Y C Y I HB392K J 39OOp5OV C e r a m i c...
  • Page 105 CAPACITORS (Continued) CAPACITORS (Continued) C769 16V Electrolytic AB V C K Y C Y I HF103Z J 0.01 50V Ceramic c711 C712 50V Mylar c771 50V Electrolytic AB c713 50V Electrolytic AB C772 c714 16V Electrolytic AB c773 c715 50V Electrolytic AB c774 C716 2 5 V C e r a m i c M...
  • Page 106 CAPACITORS (Continued) CAPACITORS (Continued) 50V Electrolytic AB C 6 3 3 5 VCKYCYlHB182K J 18OOp5OV C e r a m i c A A C l 4 1 2 VCEAEAlHWl04M J 0 . 1 16V Electrolytic AB C 6 3 3 6 VCKYCYlEBl03K J 0.01 2 5 V C e r a m i c A A C l 4 1 8 VCEAEAlCW476M J 4 7 C 6 3 3 7 VCFYSAlHB473J J 0.047 50V Mylar C 6 3 3 8 VCKYCYlEB103K J 0 .
  • Page 107 RESISTORS (Continued) RESISTORS R296 P O R 7 0 1 VRG-SCZEBZR2J J 2 . 2 1/4W FuseResistorAC R297 V R S - C Y I JF333J J 3 3 k 1116WMetalOxide M R203 V R S - C Y I JFI 03J J 10k 1116WMetalOxide ad, (VC-MHBO) V R S - C Y 1 J F 5 6 1 J J 5 6 0 1/16WMetalOxide M R298...
  • Page 108 VC-MH80 RESISTORS (Continued) RESISTORS (Continued) V R S - C Y 1 JF393J J 39k 1116WMetalOxide A A R773 R718 V R S - C Y 1 JF823J J 82k 1/16WMetalOxide A A R775 V R S - C Y I JF273J J 2 7 k 1/16WMetalOxide M...
  • Page 109 VC-MH80 Description (Continued) (Continued) RESISTORS RESISTORS Cement R 6 3 0 7 VRS-CYlJF331J J 3 3 0 1/16WMetaIOxideM Cement R 6 3 0 9 VRS-CYlJF151J J 1 5 0 1/16WMetalOxideM 7 3W R 6 3 1 1 VRS-CYIJFI 5 3 J J 1 5 k 1/16WMetalOxide M R 6 3 1 2 V R S - C Y I JF392J J 3.9k 1/16WMetalOxide M...
  • Page 110 VC-MH80 RESISTORS (Continued) MISCELLANEOUS PARTS (Continued) R 6 3 7 2 VRS-CYlJFl05J J IM 1/16WMetalOxideAA R 6 3 7 3 V R S - C Y I JF223J J 22k 1/16WMetalOxide A A R 6 3 7 8 VRS-CYl JF224J J 220k1/16WMetalOxide M...
  • Page 111 TRANSISTORS F L 5 0 0 1 RFiLCOl 1 5 G E Z Z J 4MHz RN2403 (VC-MH80) CAPACITORS DIODES D 8 8 0 2 VHDISSI 19//-l J lSS119(VC-MH80) CONTROL R 8 8 0 3 RVR-B4262GEZZ J lOk(B)P-Tone RESISTORS CAPACITORS...
  • Page 112 L 1 7 0 3 VP-ZK6R8KOOOO J 6.8uH(VC-MH90) L 1 7 0 5 VP-ZK6R8KOOOO J ‘ 6.8pH(VC-MH90) L 5 3 0 2 V P - Z K 3 9 1 K O O O O J 390pH (VC-MH80) L 5 3 0 4 VP-XF470KOOOO J 47pH(VC-MH80)
  • Page 113 (Continued) (Continued) CAPACITORS 16V Electrolytic AB Cl 738 C l 7 0 6 VCEAEAlCW106M J 1 0 2 5 V C e r a m i c A A Cl 739 C l 7 0 7 VCKYCYlEFl04Z J 0 . 1 2 5 V C e r a m i c A A C l 7 0 8 VCEAEAICWl06M J IO C l 7 0 9 VCKYCYI CF334Z J 0 .
  • Page 114 VC-MH80 RESISTORS (Continued) CAPACITORS (Continued) R I 6 5 0 VRG-SC2EBlOlJ J 1 0 0 1/4W FuseResistorAC C5326 VCKYCY 1 HFI 032 J 0.01 50V Ceramic (VC-MHBO) (VC-MHBO) R 1 7 0 2 VRS-CYlJF392J J 3.9k 106WMetalOxideAA 5 0 V C e r a m i c A A...
  • Page 115 VC-MH80 MISCELLANEOUS PARTS RESISTORS (Continued) l/l 6W Metal Oxide M S C 1 7 0 1 QSOCN0794GEZZ J Socket,7pin(NA) R 5 3 1 5 VRS-CYlJF102J J (VC-MHBO) 470 l/l 6W Metal Oxide AA S C 1 7 0 2 QSOCN0694GEZZ J Socket,6pin(NB)
  • Page 116 COILS AND TRANSFORMERS (Continued) CAPACITORS (Continued) Cl 526 5 0 V C e r a m i c M Cl 527 Cl 528 Cl 529 5 0 V C e r a m i c A A Cl 530 Cl 531 Cl 535 Cl 537 Cl 538...
  • Page 117 RESISTORS (Continued) RESISTORS (Continued) V R S - C Y I JFI 2 2 J J 1.2k 1/16WMetalOxideM 0 1116WMetalOxideAA MISCELLANEOUS PARTS V R S - C Y 1 JF82 1 J J 820 1116WMetalOxideAA RI 526 RI 527 V R S - C Y 1 JF47OJ J 4 7 1/16W MetalOxideM 8 1/16WMetalOxideAA RI 530 , R1533...
  • Page 118 VC-MH80 CAPACITORS (Continued) RESISTORS (Continued) R330 V R S - C Y I JF223J J 2 2 k 1/16WMetaIOxideM 2 5 V C e r a m i c M R331 2 5 V C e r a m i c A A...
  • Page 119 VC-MH80 MECHANISM CHASSIS PARTS Ass’ y Spring Roller Frange Roller Lower Frange NGERH 1224GEZZ J Playback Gear Roller Inner Ass’ y Control Drive Gear Arm Spring ‘ AB ‘ AK BD ’ Arm Spacer Q C N W - 7 5 0 1 G E Z Z J LeadWireforLoading...
  • Page 120 Ref. No. Control Ass’ y Screw Frame (L) Frame (R) Drive Angle Double Action Rack Screw (2.6P + 6s) MSPRT0381 GEFJ J Double Action Spring Slider (For FE Head) Holder(L) Proof Lever(L) (For Loading Motor) Proof Lever(L) Spring Holder(R) (For Capstan Motor) Cassette Spring Proof Lever(R) (For Loading Motor...
  • Page 121 VC-MH80 MECHANICAL PARTS FRONT PANEL PARTS . 611 Angle Attaching Shaft LH LDZ 1914GEZZ J Fluorescent Display Holder (inside the door) (Inside the door) 5 1 2 - 2 LHLDZ1918GEZZ J ButtonHolder J B T N - 2 6 2 6 G E S B J Button,Play...
  • Page 122 VC-MH80 SUPPLIED ACCESSORIES ACCESSORIES Q C N W - 2 7 0 2 G E Z Z J 75ohmCoaxibleCble A K Q C N W - 7 5 8 1 G E Z Z J AVCable 9 3 G N T 0 4 5 7 2 2 V Battery Cover, Infrared...
  • Page 123 VC-MH80 11. EXPLODED VIEWS MECHANISM CHASSIS PARTS...
  • Page 124 VC-MH80...
  • Page 125 VC-MH80 MECHANICAL PARTS...
  • Page 126 VC-MH80 FRONT PANEL PARTS PRECAUTIONS ON FRONT PANEL SET-UP tte hourlng Before attaching the Keep the ~arsene over Do not mount the front pan. Removing the casette compartment about 45’ open and make front panel in position, cover. make sure that the cav...

  • Page 127: Packing Of The Set

    VC-MH80 12. PACKING OF THE SET RF Converter (VC-MH80) at “ E39” position System Switch (VC-MH80) at “ 8/G” position RF Converter (VC-MH90) at “ E36” position System Switch (VC-MH90) at “ I “ position Test Signal Switch at “ OFF” position...
  • Page 128 VC-MH80 Printed in Japan...

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