Sony CFD-S07CP - CD Section

CFD-S07CP
13
CD section adjustments are done automatically in this set.
In case of operation check, confi rm that focus bias.
FOCUS BIAS CHECK
1. Connect the oscilloscope between IC801 pin ul and pin ik (or
TP804 (RF) and TP711 (VREF)).
2. Insert the disc (PATD-012 (Tr 15)). (Part No. : 4-225-203-01)
3. Press the
N X
(CD) button.
4. Confi rm that the oscilloscope waveform is as shown in the fi g-
ure below. (eye pattern)
A good eye pattern means that the diamond shape (◊) in the
center of the waveform can be clearly distinguished.
• RF signal reference waveform (eye pattern)
RF level :
1.5 ± 0.2 Vp-p
VOLT/DIV : 50 mV (10 : 1 probe in use)
TIME/DIV : 500 nS
When observing the eye pattern, set the oscilloscope for AC range
and raise vertical sensitivity.
Test Point:
– MAIN BOARD (Conductor Side) –
CD SECTION
EXCEPT
CET, IT MODEL
IC801
IC303
IC701
CN808
CN802
C126
C227
C127
C220
C120
C228
C128
C703
C880
C863
C803
L805
CN310
CN810
JW125
JW126
JW129
JW141
JW142
JW149
JW130
JW131
JW107
JW133
JW181
JW157
JW185
W
187
JW186
JW188
JW127
JW128
JW137
L807
JW136
JW139
JW140
JW143
JW180
JW124
JW122
JW121
R
703
R707
R713
15 21 22 28
1
32 17
16
13
14 8 7 1
R705
R706
C701
R
702
15
26
15
16
C882
C881
C866
C867
C859
C854
C864
R864
R865
R862
R861
R860
R859
R858
R850
R851
R852
R853
C851
R863
9
C835
R412
JC803
R701
R708
R714
R704
R715
C883
C879
C865
C861
C858
C853
C
852
C862
FB802
C855
R855
C856
R856
C878
C704
R720
R867
R808
R832
C129C231
C131
C130 C230
R326
R325
R127
R229
R13
0
R224
R230
R232
R125
C702
R719
R124
C322
C323
C229
R228
R128
R132
R123
R225
R223
R129
R126
76
100
50
1
51
75
TP804 (RF)
TP985
TP805
TP711
(VREF)
JACK
BOARD
CN311
C
TP804 (RF)
TP711 (VREF)