Cd Section - Sony CFD-S03CP Service Manual

CFD-S03CP/S03CPL

CD SECTION

CD section adjustments are done automatically in this set.
In case of operation check, confirm that focus bias.
FOCUS BIAS CHECK
1. Connect the oscilloscope between IC201 pin u; and pin th (or
TP (RFAC0) and TP (VC)).
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
below. (eye pattern)
A good eye pattern means that the diamond shape (
center of the waveform can be clearly distinguished.
• RF signal reference waveform (eye pattern)
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.
16
) in the
RF level :
+0.3
1.1 Vp-p
–0.2
Test Point:
– BD83S BOARD (Conductor Side) –
IC201
TP (VC)
11
1-868-067- (11)
TP (RFAC0)