VC-H9888U SERVICE MANUAL SX8Z5VCH9888U VIDEO CASSETTE RECORDER VC-H9888U MODEL In the interests of user-safety (Required by safety regulations in some countries) the set should be restored to its original condition and only parts identical to those specified should be used.
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VC-H9888U IMPORTANT SERVICE NOTES part. Any reading of 0.45V rms (this corresponds to 0.3mA rms BEFORE RETURNING THE VIDEO CASSETTE AC.) or more is excessive and indicates a potential shock RECORDER hazard which must be corrected before returning the video cassette recorder to the owner.
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VC-H9888U NOTES DE SERVICE IMPORTANTES entre la résistance. Inverser la fiche CA (une fiche intermédiaire AVANT DE RENDRE LE MAGNETOSCOPE non polarisée doit être utilisée à seule fin de faire ces vérifications.) sur l’appareil et répéter les mesures de tension Avant de rendre le magnétoscope à...
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VC-H9888U PRECAUTIONS IN PART REPLACEMENT When servicing the unit with power on, be careful to the section marked white all over. This is the primary power circuit which is live. When checking the soldering side in the tape travel mode, make sure first that the tape has been loaded and then turn over the PWB with due care to the primary power circuit.
VC-H9888U 2. DISASSEMBLY AND REASSEMBLY 2-1. DISASSEMBLY OF MAJOR BLOCKS TOP CABINET : Remove 4 screws 1. MECHANISM / : Undo the 3 hooks each of the front left- FRONT PANEL : Remove 2 screws 2 and 7 clips 3.
VC-H9888U 2-2. CARES WHEN REASSEMBLING INSTALLING THE CASSETTE CONTROLLER cassette controller. (Conditions: When mechanism and When the cassette controller is installed on the mecha- PWB have been installed) nism, the initial setting is essential condition. There are two initial setting methods, namely electrical 2.
VC-H9888U 3. 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 prior to the adjustments,otherwise adjustments can not be completed.
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VC-H9888U SERVO CIRCUIT ADJUSTMENT 3-2 ADJUSTMENT OF SLOW TRACKING PRESET 3-1 ADJUSTMENT OF HEAD SWITCHING Measuring Color TV monitor POINT instrument Measuring Dual-trace oscilloscope Mode Make recording on self-recording tape instrument in SP mode or EP mode. Play it back.
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VC-H9888U 1. Input commercial broadcast or video signal to video input terminal. 2. Make recording on self-recording tape in SP mode. Play it back. 3. Press the PAUSE/STILL button to freeze the picture. 4. Look at the monitor screen and adjust (') or (") TRACKING/CHANNEL select buttons so that the ver- tical jitter of the picture is minimized.
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VC-H9888U SIGNAL FLOW BLOCK DIAGRAM PB Lum REC Lu * VOLTAGE MEASUREMENT MODE Parentheses ( Without Parentheses...
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VC-H9888U Audio Playback Signal E-E Signal PB Luminance Signal PB Chrominance Signal Audio E-E Signal REC Chrominance Signal Audio Record Signal REC Luminance Signal...
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VC-H9888U GAMMA BLOCK DIAGRAM * VOLTAGE MEASUREMENT MODE Parentheses ( Without Parentheses...
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VC-H9888U * VOLTAGE MEASUREMENT MODE Parentheses ( Without Parentheses...
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VC-H9888U SCHEMATIC DIAGRAM • The indicated voltages in the following diagram IMPORTANT SAFETY NOTICE: are measured with an SSVM, upon receiving color bars (400 Hz sound signal) in either the PARTS MARKED WITH " å " ( ) ARE record mode or the play mode voltage is indi- IMPORTANT FOR MAINTAINING THE SAFETY cated as follows.
VC-H9888U 7.PARTS LIST LISTE DES PIECES Ref. No. Part No. Description Code Ref. No. Part No. Description Code PARTS REPLACEMENT CHANGE DES PIECES De nombereuses pièces électriques et mécaniques de magnétoscopes Many electrical and mechanial parts in video cassette recorder have présentent des caractéristiques particulières de sécurité.
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VC-H9888U Ref. No. Part No. Description Code Ref. No. Part No. Description Code DUNTK5610TEV2 D965 VHDRL1N4004-1 V RL1N4004 D966 VHDRL1N4004-1 V RL1N4004 Main Unit (Continued) D967 VHDRL1N4004-1 V RL1N4004 D991 RH-EX0631GEZZ V Zener Diode Q603 VS2SC3203Y/-1 V 2SC3203Y D992 RH-DX0475CEZZ V Diode å...
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VC-H9888U Ref. No. Part No. Description Code Ref. No. Part No. Description Code DUNTK5610TEV2 C518 VCKYCY1HF333Z V 0.033 50V Ceramic C521 VCKYCY1HF103Z V 0.01 50V Ceramic Main Unit (Continued) C522 VCKYD41CY103N V 0.01 16V Ceramic C523 VCKYD41CY103N V 0.01 16V Ceramic...
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VC-H9888U Ref. No. Part No. Description Code Ref. No. Part No. Description Code DUNTK5610TEV2 R107 VRS-CY1JF822J V 8.2k 1/16W Metal Oxide AA R108 VRS-CY1JF103J V 10k 1/16W Metal Oxide AA Main Unit (Continued) R109 VRS-CY1JF561J V 560 1/16W Metal Oxide AA...
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VC-H9888U Ref. No. Part No. Description Code Ref. No. Part No. Description Code DUNTK5610TEV2 R736 VRS-CY1JF183J V 18k 1/16W Metal Oxide AA R737 VRS-CY1JF102J V 1k 1/16W Metal Oxide AA Main Unit (Continued) R738 VRD-RA2BE104J V 100k 1/8W Carbon R739...
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VC-H9888U Ref. No. Part No. Description Code Ref. No. Part No. Description Code DUNTK5610TEV2 DUNTK5611TEV2 Main Unit (Continued) OPERATION Unit å R931 VRS-CY1JF103J V 10k 1/16W Metal Oxide AA RESISTORS å R933 VRS-CY1JF103J V 10k 1/16W Metal Oxide AA R882 VRD-RA2BE222J V 2.2k 1/8W Carbon...
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VC-H9888U Ref. No. Part No. Description Code Ref. No. Part No. Description Code DUNTK5613TEV2 C422 VCQYWA1HA102J V 1000p 50V Mylar C423 VCKYCY1CF104Z V 0.1 16V Ceramic GAMMA Unit C424 VCEA9M1CW476M V 47 16V Electrolytic C425 VCEA9M1CW106M V 10 16V Electrolytic...
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VC-H9888U Ref. No. Part No. Description Code Ref. No. Part No. Description Code DUNTK5613TEV2 MECHANISM CHASSIS PARTS GAMMA Unit (Continued) R437 VRS-CY1JF472J V 4.7k 1/16W Metal Oxide AA LBNDK1011AJZZ V Tension Band Ass’y R438 VRS-CY1JF101J V 100 1/16W Metal Oxide AA...
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VC-H9888U Ref. No. Part No. Description Code Ref. No. Part No. Description Code MECHANISM CHASSIS PARTS CASSETTE HOUSING CONTROL PARTS (Continued) XBPSD26P05J00 V Drum Drive Motor CHLDX3081TEV2 V Cassette Housing Control AX Mounting Screw Ass'y (SW2.6P+5S) LANGF9592AJFW V Upper Plate...
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SSAKP0030AJZZ - Polyethylene Bag — TLABK0005AJZZ - No. Card — CPNLC2495TEV1 V Front Panel Ass'y 501-2 HBDGB3019AJSB V SHARP Badge 501-3 HDECQ1939AJSA V Cassette Flap 501-4 HDECQ1914AJSA V Cassette Flap Dec. 501-5 HDECQ1940AJSA V Window Dec. 501-6 JBTN-2920AJSA V STOP Button...
VC-H9888U 8. PACKING OF THE SET Ref. No. Part No. Description Code Ref. No. Part No. Description Code Setting of the Knobs RF conv. CH. preset at "3" channel Accessories TiNS-3487AJZZ Operation Manual TCADH0047AJZZ Operation Guide SSAKA0001AJZZ Polyethylene Sack RRMCG0287AJSA...