Sony HCD-VX55 Service Manual page 21

VIDEO SECTION
Frequency Adjustment
Connection:
VIDEO board
(27 MHz)
Procedure:
1. Connect the frequency counter to check point of the VIDEO
board.
2. Turned power switch on.
3. Press the CD button to select the CD.
4. Adjust CT503 on the VIDEO board so that the frequency counter
reading 27.0 MHz ± 80 Hz at stop status.
Adjustment Location:
[VIDEO BOARD] (Component Side)
J302
J301
CN501
SL503
SL502
SL501
CHECK LED
CN502
frequency counter
IC507
(GND)
CT503
(27MHz)
VIDEO
Frequency
Adjustment
CN503
21