Text preview for : circuit diagrams.pdf part of LG circuit diagrams LG VCR bn200y circuit diagrams.pdf
Back to : circuit diagrams.pdf | Home
CIRCUIT DIAGRAMS * IC101 Voltage Sheet
PB 16.1 4.0
* IC102 Voltage Sheet
PB 4.0 0.0
1. Power, Tuner, SCART Circuit Diagram REC 16.3
5
4.6 REC 4.0
4
0.0
No 5.3VA and 5VG, 5VT. IC101 IC102
Switching dead. D106 is defective.
IC101 is defective. Power dead. 1 1
BD101, R101 are defective. No power. D109, C120 are defective. PB 309 0.0 0.0 PB 4.9 3.9
No 14VA, 12VA are 12VT. REC 309 0.0 0.0 REC 4.9 4.0
D102 is defective.
No 5.2VT.
Power dead. Q152 is defective.
F101 is defective.
with MOD
Power dead.
IC102, IC103 are defective.
_ 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
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
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
1. Shaded( ) parts are critical for safety. Replace only
EE/PB MODE (VIDEO) NOTES) Symbol denotes AC ground.
NOTE)
NOTE)
Warning
Parts that are shaded are critical
with specified part number. Emitter Collector Base
NOTE) With respect to risk of fire or 2. Voltages are DC-measured with a digital voltmeter PB REC PB REC PB REC
TU MODE (AUDIO) NOTES) Symbol denotes DC chassis ground.
NOTE) electricial shock. during TUNER mode.
IC103 2.5 2.5 0.0 0.0 3.9 3.9
3-23 3-24