Video Section; Rf Pll Free-Run Frequency Check; Frequency Adjustment - Sony HCD-V4800 Service Manual

RF PLL Free-run Frequency Check

Connection:
frequency counter
BD board
TP (PLCK)
Procedure:
1. Connect the frquency counter to TP (PLCK) on the BD board.
2. Turned power switch on.
3. Put disc (YEDS-18) in and press the · button, and play the
number five track.
4. Confirm that the reading on frequency counter is 4.3218 MHz.
Connection Location:
[BD BOARD] (SIDE-A)
IC103
(RF)
(VC)
(PLCK)
IC101
+
–
(FEI)
(FE)
(TE)

VIDEO SECTION

Frequency Adjustment

Connection:
VIDEO board
TP410 (DCLK)
Procedure:
1. Connect the frequency counter to TP410 (DCLK) on VIDEO
board.
2. Turned power switch on.
3. Press the FUNCTION button to select the CD.
4. Adjust CT401 on the VIDEO board so that the frequency counter
reading 13.5 MHz ± 40 Hz at stop status.
Adjustment Location:
[VIDEO BOARD] (SIDE-B)
– 22 –
frequency counter
+
–
CT401
IC402
TP410
(DCLK)