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CIRCUIT DIAGRAMS
1. Power, Tuner, NICAM/A2 Circuit Diagram
Switching dead.
IC101 is defective.
Power dead.
BD101, R101 are defective.
Power dead.
F101 is defective.
EE MODE(VIDEO)
EE/PB MODE (VIDEO)
NOTES)
TU MODE (AUDIO)
NOTES)
No 5.3VA and 5VG, 5VT.
D106 is defective.
No power.
D102 is defective.
IC102, IC103 are defective.
NOTE)
Warning
Symbol denotes AC ground.
NOTE)
Parts that are shaded are critical
NOTE)
With respect to risk of fire or
Symbol denotes DC chassis ground.
NOTE)
electricial shock.
D109, C120 are defective.
No 14VA, 12VA are 12VT.
No 5.2VT.
Q152 is defective.
Power dead.
NOTE :
1. Shaded( ) parts are critical for safety. Replace only
with specified part number.
2. Voltages are DC-measured with a digital voltmeter
during TUNER mode.
3-27
3-28
J9M8
* IC101 Voltage Sheet
* IC102 Voltage Sheet
PB
16.1
4.0
PB
4.0
0.0
REC
16.3
4.6
REC
4.0
0.0
5
4
IC101
IC102
1
1
PB
309
0.0
0.0
PB
4.9
3.9
REC
309
0.0
0.0
REC
4.9
4.0
_ _ TR Voltage Sheet
Emitter
Collector
Base
PB
REC
PB
REC
PB
REC
Q151
11.9
11.8
14.8
15.0
12.5
12.4
Q152
9.4
9.3
11.8
11.6
10.0
9.9
Q514
-27.3
-27.9
-27.3
-27.8
-26.6
-27.0
* IC103 Voltage Sheet
Emitter
Collector
Base
PB
REC
PB
REC
PB
REC
IC103
2.5
2.5
0.0
0.0
3.9
3.9
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