Read Sony HCD-VP700 Service Manual online
21
HCD-VP700
Note: Clear RF signal waveform means that the shape “
◊” can be
clearly distinguished at the center of the waveform.
RF signal waveform
E-F Balance (1 Track jump) Adjustment
Procedure:
1.
1.
Connect oscilloscope to TP (TE) and TP (DVC) board.
2.
Turned Power switch on.
3.
Load a disc (YEDS-18) and playback the number five track.
4.
Press the X button. (Becomes the 1track jump mode.)
5.
Confirm that the level B and A (DC voltage) on the oscilloscope
waveform.
waveform.
1 track jump waveform
Specification level: x 100=less than
±22%
6.
Adjust RV101 so that (DC voltage) becomes 0.
7.
After check, remove the lead wire connected in step 1.
VOLT/DIV : 200mV
TIME/DIV : 500ns
TIME/DIV : 500ns
level : 1.1
± 0.3Vp-p
oscilloscope
BD board
TP (TE)
TP (DVC)
TP (DVC)
+
–
–
0V
Center of
waveform
waveform
B
Symmetry
A (DC voltage)
level=1.3
±
0.6Vp-p
IC103
IC101
TP(RFDC)
TP(TE)
TP(FE)
TP(SE)
TP (DVC)
TP
(RFAC)
(RFAC)
RV101
TP
(XPCK)
(XPCK)
Adjustment Location :
[ BD (CD) BOARD ] — SIDE B —
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