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Only in this place I could find this manual. Very complete and very clear. PDF is a very good quality and easily read. Thank you. I was very useful.
Videoson & ltd.
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It is great, it saves money and paper. It helps me to save room and recources.
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manual service is ok , resolve the problems
manual service is ok , resolve the problems
manual service is ok , resolve the problems
manual service is ok , resolve the problems
manual service is ok , resolve the problems
 ;
Well I got all the necessary specifications for the job. Document of good quality and good definition of the diagrams
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hi .full information for JVC GRVF1EG Service Manual its compete .Thank You
Alignment and Adjustment
a. ACE HEAD HEIGHT ADJUSTMENT 1) Run the alignment tape (Color bar) in the playback mode. 2) Observe surface of the audio head using a dental mirror. 3) Turn screw (C) clockwise or counterclockwise until the gap of lower tape edge and the lower edge of the control head is about 0.25mm. (Refer to Fig. 5-6 and 5-7)
b. ACE HEAD TILT ADJUSTMENT 1) Playback a blank tape and observe the position of the tape at the lower flange of tape guide. 2) Confirm that there is no curl or wrinkle at the lower flange of tape guide as shown in Fig. 5-8 (B). 3) If a curl or wrinkle of the tape occurrs, slightly turn the screw (A) tilt adjust on the ACE head ass�y. 4) Reconfirm the ACE head height.
(A) (B)
SCREW (A) TLIT ADJUST
SCREW (C) HEIGHT ADJUST WRINKLE
X-POSITION ADJUSTING SLIT SCREW (B) AZIMUTH ADJUST
SCREW (D) X-POSITION LOCKING
(BAD)
(GOOD)
Fig. 5-6 Location of ACE Head Adjustment Screw
Fig. 5-8 Tape Guide Check c. AUDIO AZIMUTH ADJUSTMENT
AUDIO HEAD VIDEO HEAD
0 ~ 0 .25 mm CONTROL HEAD
1) Load alignment tape (Mono scope) and playback the 6KHz signal. 2) Connect channel-1 scope probe to audio output test point (TP302). 3) Adjust screw (B) to achieve maximum audio level. (See Fig. 5-6) d. ACE HEAD POSITION (X-POINT) ADJUSTMENT
Fig. 5-7 ACE Head Height Adjustment
1) Playback the alignment tape (Color bar). 2) Press the �SW713� button on Main PCB to set the adjustment mode. (See Fig. 5-2) 3) Press the �5� button of remote control then adjustment is operated automatically. (See Fig. 5-1) 4) Connect the CH-1 probe to TP303 (Envelope) the CH-2 probe to TP601 (H�D switching pulse) and then trigger to CH-1. 5) Insert the (-) driver into the X-Point adjustment hole and adjust it so that envelope waveform is maximum. 6) Turn the Power off.
Toshiba
5-5
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