Sony SVT-RA168, Руководство по обслуживанию

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3-1
SVT-RA40/RA168
Section 3
Electrical Adjustments
3-1. Servo Circuit Adjustment
. These adjustments should be carried out upon completion of the tape transport adjustments.
. If the tape transport adjustments (except the tilt adjustment) are done after these adjustments, follow the
procedures again in Section 3-1-3. “SWITCHING POSITION ADJ.”
. When a cassette tape is loaded, auto-tracking will be set immediately after starting the first playback.
As this will deviate the tracking center set, be sure to tracking center position after starting playback to
prevent auto-tracking from being set.
3-1-1. Test Equipment and Standards Required
Color Bar Signal Generator NTSC color bar signal with 100% white level (EIA color bar signal)
Oscilloscope Vertical sensitivity: 5 mV/DIV, external trigger
Bandwidth: more than 10 MHz
Alignment Tape VHJ-0007: EP mode, monoscope
Blank Tape VHS cassette tape
Monitor TV
VR111
VR131
TP102
TP183
TP182
TP101
CP-1 PWB (Foil side)
3-1-2. Location Of Adjustment Points
Fig. 2-1-1
m
.
Set the REC/PLAY SPEED button to indicator panel to
the 8H (8 hours) mode.
. Self-recoding means “Record any broadcasting or video
signal and play back the just-recorded portion”.