Read Sony CFD-S01 (serv.man2) Service Manual online
16
CFD-S01
CD SECTION
CD section adjustments are done automatically in this set.
In case of operation check, confirm that focus bias.
In case of operation check, confirm that focus bias.
FOCUS BIAS CHECK
1. Connect the oscilloscope between IC701 pin ts and pin 4 (or
TP (RF) and TP (VREF)).
2. Insert the disc (PATD-012 (Tr 15)). (Part No. : 4-225-203-01)
3. Press the N X (CD) button.
4. Confirm that the oscilloscope waveform is as shown in the figure
3. Press the N X (CD) button.
4. Confirm that the oscilloscope waveform is as shown in the figure
below. (eye pattern)
A good eye pattern means that the diamond shape ( ) in the
center of the waveform can be clearly distinguished.
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)
When observing the eye pattern, set the oscilloscope for AC range
and raise vertical sensitivity.
and raise vertical sensitivity.
Test Point:
JC704
JC703
JC705
JC701
E C B
R712
R726
R703
R742
FB702
R702
R773
FB704
FB703
C708
C728
IC701
R725
R763
R746
C774
JC702
R783
R781
R728
R734
R782
R766
R736
R740
C720
C782
R744
R748
C705
R756
R774
R761
R762
R759
R755
R758
R760
R757
FB701
C718
Q703
R700
R714
R722
R717
R721
R701
R704
R713
C758
C730
C764
C731
C725
R754
C726
C727
C711
C713
C754
C757
C753
C748
C738
C735
C763
C712
C773
C766
C709
R743
C767
R709
R716
C752
R739
C751
C772
C706
FFC
JW195
JW194
JW196
JW201
JW180
JW192
JW202
JW193
RF
JW197
JW198
JW199
JW200
JW205
JW203
JW204
X701
C749
C759
C707
C716
C719
C747
C733
C704
C703
D703
D704
C761
R775
R776
C765
C769
C779
C755
R770
R768
R772
C750
C762
R708
R707
R706
R705
R711
C700
C710
R710
C777
R727
C717
TP701
TP702
TP703
C729
C745
C744
R715
1
13
14
26 27
39
40
52
TP (VREF)
TP (RF)
– MAIN BOARD (Conductor Side) –
RF level :
1.7
1.7
±
0.2 Vp-p
VOLT/DIV : 50 mV (10 : 1 probe in use)
TIME/DIV : 500 nS
TIME/DIV : 500 nS
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