Service Manuals, User Guides, Schematic Diagrams or docs for : LG VCR L214-216-217-218 EL172W_CIRCUIT
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NOTE :
1. Shaded( ) parts are critical for safety. Replace only
with specified part number.
2. Power(SMPS) Circuit Diagram 2. Voltages are DC-measured with a digital voltmeter
during TUNER mode.
12VA Power dead.
D109 is defective.
(TO SYSTEM)
Power dead.
BD101,R101 are
defective.
5.4VA Power dead.
D106 is defective.
36VA Power dead.
D105 is defective.
Switching dead.
IC101 is defective.
Switching error
Power dead.
IC102, IC103 are
F101 is defective. defective.
NOTES) Warning
NOTES) Symbol denotes AC ground. NOTES) Parts that are shaded are critical
NOTES) Symbol denotes DC chassis ground. NOTES) With respect to risk of fire or
NOTES) electricial shock.
3-18 3-19
3. TUNER CIRCUIT DIAGRAM
3-20 3-21
7. A/V CIRCUIT DIAGRAM
Video Noise. No Color. No Color. Video output level unstable No Color.
H/SW Level is defective.. R333, C350, C349 are defective. L306, C346 are defective. C339 is defective. R338, C338 are defective.
10
9
8
11
7
6
(FROM/TO DECK)
12
5
13
4
(FROM/TO DECK)
1
2
3
(MONO OPTION)
VIDEO Distortion
R330, 322, 325,
WAVEFORM C318 are defective.
Y. (REC) AUDIO(REC) C/PB
C. (REC) Y+C (REC) Y/PB
AUDIO(PB) Y+C (PB)
3-26 3-27
9. Hi-Fi CIRCUIT DIAGRAM (Hi-Fi MODEL ONLY)
3-30 3-31
11. SYSTEM CIRCUIT DIAGRAM
DOT MODEL
ONLY
PB, PG will not operate.
VR501 is defective.
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