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* IC901 Voltage Sheet * IC801 Voltage Sheet
PB 0 4.8 4.7 3.8 1.5 1.5 3.3 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 0 PB 3.6 4.4 4.2 0.9 5.1 0.0 0.0 0.7 0.6 0.7 11.9 3.9 3.9 3.9 0.8 3.9 3.9 0.0 0.8 3.9 3.9 3.9
REC 0 4.8 4.7 3.8 1.5 1.5 3.3 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 0 REC 1.9 4.4 4.1 0.9 5.0 0.0 4.2 4.3 4.2 4.3 12.0 3.9 3.9 3.9 0.8 3.9 3.9 0.0 0.8 3.9 3.9 3.9
4. Hi-Fi, SCART Circuit Diagram 30 25 20 40 35 30 25
IC901(MM1443) IC801(TDA9605H)
5 10 15 5 10 15 20
PB 2.7 11.6 2.7 11.6 3.5 5.5 5.5 5.5 0 5.5 11.7 5.5 0 5.5 0 5.5 0 PB 3.8 3.9 3.9 3.9 3.8 3.8 3.8 3.8 3.8 3.8 3.8 0.0 3.9 0.0 0.0 6.0 6.0 0.0 6.0 6.0 4.5 3.8
REC 2.7 11.6 2.7 11.6 3.5 5.5 5.5 5.5 0 5.5 11.7 5.5 0 5.5 0 5.5 0 REC 3.8 3.9 3.9 3.9 3.8 3.8 3.8 3.8 3.8 3.9 3.9 0.0 3.8 0.0 0.0 6.0 6.0 0.0 6.0 6.1 4.6 3.8
IC801 42, 43 Pins are defective.
All Audio is not appear.
3.3K
3.3K
OPTION :
Hi-Fi MODEL ONLY
(MONO)
(To. AVCP)
PB Hi-Fi V.OUT
NORMAL Audio V.IN
3-38 3-39
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
5. SHUTTLE & KEY Circuit Diagram
3-40 3-41
* IC501 Waveform Photographs
3. System Circuit Diagram
VCR dead.
Reset is defective. IC505 is defective.
LD Motor will not operate. Set dead. PB PG will not operate.
IC502, ZD501 are defective. IC504 is defective. VR501 is defective.
IC501 Pin 24 IC501 Pin 27 IC501 Pin 31 IC501 Pin 32
1V/5mS 1V/2mS 1V/10mS 1V/10mS
REC/PB modes QUE/REV modes REC mode REC mode
(V.H/SW) (D.V-SYNC) (CTL+) (CTL-)
IC501 Pin 38 IC501 Pin 39 IC501 Pin 40 IC501 Pin 43
1V/1mS 1V/10uS 1V/1mS 100mV/10uS
REC/PB mode REC/PB modes REC/PB modes EE/PB modes
(DFG) (DPG) (CFG) (V-IN)
IC501 Pin 45 IC501 Pin 54
500MV/10uS 1V/20uS
EE/PB modes EE/PB modes
(V-OUT) (C-SYNC)
1
2 10
5 6 7 8 9
3 4
_ IC502 Voltage Sheet _ System IC Voltage Sheet _ SYSTEM IC Voltage Sheet
PB 0.4 0.8 12.19 12.19 2.16 Emitter Collector Base