Read Sony CFD-V5 Service Manual online
– 12 –
CD SECTION
How to put the set into CD Test Mode
1. Set the function switch to power off.
2. Set the function switch to CD while
1. Set the function switch to power off.
2. Set the function switch to CD while
l key and x key pressing.
The set is into CD test mode (88 is displayed).
The set is into CD test mode (88 is displayed).
3. Turn the power off to release test mode.
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 rj pin (RFO) and GND
1. Connect the oscilloscope between IC701 rj pin (RFO) and GND
on CD board.
2. Insert the disc (YEDS-18). (Part No. : 3-702-101-01)
3. Press the u button.
4. Confirm that the oscilloscope waveform is as shown in the fig-
3. Press the u button.
4. Confirm that the oscilloscope waveform is as shown in the fig-
ure below. (eye pattern)
A good eye pattern means that the diamond shape (
A good eye pattern means that the diamond shape (
◊
) in the cen-
ter 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 certical sensitivity
and raise certical sensitivity
RF level
1.5 –2.0 Vp-p
1.5 –2.0 Vp-p
VOLT/TV : 200mV (10 : 1 probe in use)
TIME/DIV : 500 nS
TIME/DIV : 500 nS
IC701
C728
JW717
JW728
C733
R
CN701
C713
JW726
7
C725
C724
JW724
R732
R708
R740
714
R763
C716
R
741
C727
C732
C740
C704
717
R711
C721
C739
JW715
R723
R724
C743
9
R7
JW718
R702
R718
715
R709
12
R731
4
R701
C74
2
R706
C730
R704
C744
7
18
JW721
6
C714
C731
C702
R705
C73
4
C717
7
25
0
R734
R703
R765
R769
R721
C712
7
20
R739
JW704
R766
1
5
10
15
16
17
20
25
30
32
33
35
40
45
48
49
50
55
60
64
1
8
15
VC
B C E
oscilloscope
(AC range)
[MAIN BOARD] (Conductor side)
(GND)
IC701 pin
rj
(RFO)
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