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CIRCUIT DIAGRAMS * IC101 Voltage Sheet
PB 16.1 4.0
* IC102 Voltage Sheet
PB 4.0 0.0
1. Power, Tuner, NICAM/A2 Circuit Diagram REC 16.3
5
4.6 REC 4.0
4
0.0
IC101 IC102
Switching dead. No 5.3VA and 5VG, 5VT.
IC101 is defective. D106 is defective. 1 1
PB 309 0.0 0.0 PB 4.9 3.9
Power dead. D109, C120 are defective. No 12VA.
No power. REC 309 0.0 0.0 REC 4.9 4.0
BD101, R101 are defective. No 14VA, 12VA are 12VT. Q155 is defective.
D102 is defective.
Power dead. No 5.2VT.
F101 is defective. Q152 is defective.
with MOD
2.8V
2.0V
0V 0V
0.7V
0V
Power dead.
IC102, IC103 are defective.
_ TR Voltage Sheet
Emitter Collector Base
PB REC PB REC PB REC
OPTION : Hi-Fi MODEL ONLY
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
Q153 11.8 11.7 14.8 15.0 12.4 12.3
Q154 -27.3 -27.9 -27.3 -27.8 -26.6 -27.0
Q155 5.3 5.3 5.2 5.3 0.0 0.0
Q156 -16.1 -16.5 -16.0 -16.4 -15.4 -15.7
Q157 5.3 5.3 5.2 5.2 0.0 0.0
Q158 35.6 36.0 35.3 35.7 35.0 35.4
Q159 5.3 5.3 5.2 5.2 4.5 4.5
Q160 0.0 0.0 0.0 0.0 5.0 5.0
Q161 0.0 0.0 0.1 0.0 5.0 5.0
Q162 5.3 5.3 5.2 5.2 4.5 4.5
Q164 5.3 5.3 5.3 5.3 4.6 4.6
Q165 0.0 0.0 10.0 10.0 0.0 0.0
EE MODE(VIDEO) NOTE : * IC103 Voltage Sheet
EE/PB MODE (VIDEO) NOTES) Symbol denotes AC ground.
NOTE)
NOTE)
Warning
Parts that are shaded are critical
1. Shaded( ) parts are critical for safety. Replace only
with specified part number. Emitter Collector Base
NOTE) With respect to risk of fire or PB REC PB REC PB REC
TU MODE (AUDIO) NOTES) Symbol denotes DC chassis ground.
NOTE) electricial shock.
2. Voltages are DC-measured with a digital voltmeter
during TUNER mode. IC103 2.5 2.5 0.0 0.0 3.9 3.9
3-30 3-31