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3. 4 ELECTRICAL ADJUSTMENTS
11.
14.31818 MHz
[Electrical Adjustment]
® Purpose:
Adjustment of the standard clock frequency.
© Symptom when incorrectly adjusted:
Incorrect color tint, no TV color lock, and VCXO
cannot be adjusted during
LDD playback.
Measurement equipment
Measurement equipment
Player condition
Adjusting points
& jigs
connecting points
@ Frequency counter
@ JP (14.31818)
®@ Normal mode
@VvCc901
® Oscilloscope 10: 1 probe
* STOP mode
(Blueback screen)
Adjusting procedure
1. Adjust VC901
on the mother board Ass'y so that the
frequency becomes
14.31818
MHz
in the STOP
mode
(blueback screen).
Note:
The frequency counter probe should be an oscillo-
scope 10: 1 probe.
Adjustment diagram
Frequency counter
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