Sony HCD-VX77 - Page 22

22
VIDEO SECTION
Frequency adjustment
1. Connect the frequency counter to check point of the VIDEO
board.
2. Adjust CT503 of the VIDEO board so that the frequency counter
read 27MHz ± 80Hz at STOP condition.
[ VIDEO BOARD ] – SIDE B –
Adjustment Location :
[ VIDEO BOARD ] – SIDE A –
frequency counte
r
VIDEO board
(27 MHz)
+
–
SL501
IC502
SL502
SL503
TEST
MODE
SL501
SL502
CT503
SL503
TEST MODE
VIDEO
FREQUENCY
(27MHz)
(GND)
IC507
IC505
Adjustment Location :
[ BD BOARD ] — SIDE B —
TP
(VC)
TP
(RF)
TP
(TEO)
TP
(IOP)
TP
(FEO)
TP
(AGND)
TP
(DGND)
TP
(AGCCON)
IC102