Sony SVT-N72P, Service Manual

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3-1
SVT-N72P (E)
TP102
TP183
TP182
TP101
CP-1 PWB (Foil side)
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 PAL color-bar signal with 100% white level
Oscilloscope Vertical sensitivity: 5 mV/DIV, external trigger
Bandwidth: more than 10 MHz
Alignment Tape VHJ-0009: SP mode, monoscope, 6 kHz
Blank Tape VHS cassette tape
Monitor TV
3-1-2. Location of Adjustment Points
Fig. 2-1-1
m
.
Set the REC/PLAY SPEED button to indicator panel to
the 3H (3 hours) mode.
. Self-recoding means “Record any broadcasting or video
signal and play back the just-recorded portion”.