Service manual

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2. ELECTRICAL ADJUSTMENT
2-1. 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 2-1-3. “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.
2-1-1. TEST EQUIPMENT AND STANDARDS REQUIRED
Color Bar Signal Generator
PAL color bar signal with 100% white level (color bar signal)
Alignment Tape
Blank Tape
Monitor TV
Oscilloscope
VHJ-0052 : LP mode, monoscope, 3 kHz
VHS cassette tape
Vertical sensitivity : 5 mV/DIV, external trigger
Bandwidth : more than 10 MHz
2-1-2. LOCATION OF ADJUSTMENT POINTS
CP-1 PWB (Foil side)
Fig. 2-1-1
VR141
VR131
TP101
TP141
TP183
TP142
TP182