Cd Section - Sony CFD-S39 Service Manual
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Also See for CFD-S39:
- Operating instructions manual (36 pages) ,
- Specifications (2 pages) ,
- Limited warranty (1 page)
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Adjustment Location:
AM
TRACKING
ADJUSTMENT
FREQUENCY
COVERAGE
ADJUSTMENT
FM
TRACKING
ADJUSTMENT
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 IC701 pin #£ (TP RFO) and
GND on CD board.
2. Insert the disc (YEDS-18). (Part No. : 3-702-101-01)
3. Press the CD fl 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 : 200 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.
– tuner board (component side) –
CT3
L4
L2
FM
CT1
L1
) in the
RF level :
1.2 ± 0.1 Vp-p
(FM ANT)
Test Point:
– main board (conductor side) –
TP (RFO)
– 15 –
TP
TP (VT)
(JW17)
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