Video Section - Sony HCD-V808 Service Manual

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When a general remote commander is not used (1 Track Jump
Check):
Procedure:
1. Connect the oscilloscope to TP (TE) and TP (VC) on BD board.
2. Turned power switch on.
3. Put disc (YEDS-18) in and press the · ∏ button, and play
the number five track.
4. Press the · ∏ button. (Becomes the 1 track jump mode)
5. Confirm that the level B of the oscilloscope's waveform and
the A (DC voltage) of the center of the traverse waveform.
Confirm the following:
A – B
× 100 = ±7 (%)
2 (A + B)
1 track jump waveform
0V
level : 1.3 ± 0.6 Vp-p
RF PLL Free-run Frequency Check
Connection:
BD board
TE
TP (PLCK)
L 13942296513
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)
(PLCK)
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Center of the waveform
B
A (DC voltage)
symmetry
frequency counter
+
–
(FEL)
IC103
(RF)
(FE)
(FE)
(VC)
IC101
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8

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)
Q Q
3 6 7 1 3
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.
– 23 –
2 9 9 4 2 8
frequency counter
+
–
CT401
IC402
TP410
(DCLK)
1 5 0 5 8 2 9 9 4
m
co
9 9
2 8 9 9