Read Sony CFD-Z500 / CFD-Z501 / CFD-Z550 Service Manual online
– 14 –
TP(RFO)
TP (RFO)
RF level :
1.3
1.3
±
0.5 Vp-p
VOLT/DIV : 200 mV (10 : 1 probe in use)
TIME/DIV : 500 nS
TIME/DIV : 500 nS
Adjustment Location:
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 #£ (TP RFO) and
GND on CD board.
2. Insert the disc (YEDS-18). (Part No. : 3-702-101-01)
3. Press the
3. Press the
^ 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)
π
Test Point:
When observing the eye pattern, set the oscilloscope for AC range
and raise vertical sensitivity.
and raise vertical sensitivity.
L2
CT1-2
L1
CT1-1
RV1
FM VCO
ADJUSTMENT
L4
CT1-4
L3
CT1-3
FM
FREQUENCY
COVERAGE
ADJUSTMENT
FREQUENCY
COVERAGE
ADJUSTMENT
FM
TRACKING
ADJUSTMENT
TRACKING
ADJUSTMENT
AM
FREQUENCY
COVERAGE
ADJUSTMENT
FREQUENCY
COVERAGE
ADJUSTMENT
AM
TRACKING
ADJUSTMENT
T2
AM IF
ADJUSTMENT
AM IF
ADJUSTMENT
T1
FM IF
ADJUSTMENT
FM IF
ADJUSTMENT
– main board (component side) –
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