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CIRCUIT DIAGRAMS
1. POWER(SMPS) CIRCUIT DIAGRAM
Power dead
IC101 is defective
NOTES)
Warning
NOTES :
Symbol denotes AC ground.
NOTES)
Parts that are shaded are critical
NOTES)
With respect to risk of fire or
Symbol denotes DC chassis ground.
NOTES)
electricial shock.
A
B
C
D
E
F
G
H
I
3-28
IMPORTANT SAFETY NOTICE
WHEN SERVICING THIS CHASSIS, UNDER NO CIR-
CUMSTANCES SHOULD THE ORIGINAL DESIGN BE
MODIFIED OR ALTERED WITHOUT PERMISSION
FROM THE LG ELECTRONICS CORPORATION. ALL
COMPONENTS SHOULD BE REPLACED ONLY WITH
TYPES IDENTICAL TO THOSE IN THE ORIGINAL CIR-
VF(+) Power dead
R102 is defective
VF(-) Power dead
ZD101 is defective
J
K
L
M
3-29
CUIT. SPECIAL COMPONENTS ARE SHADED ON THE
NOTE :
SCHEMATIC FOR EASY IDENTIFICATION.
1. Shaded( ) parts are critical for safety. Replace only
THIS CIRCUIT DIAGRAM MAY OCCASIONALLY DIF-
with specified part number.
FER FROM THE ACTUAL CIRCUIT USED. THIS WAY,
2. Voltages are DC-measured with a digital voltmeter
IMPLEMENTATION OF THE LATEST SAFETY AND
during Play mode.
PERFORMANCE IMPROVEMENT CHANGES INTO
THE SET IS NOT DELAYED UNTIL THE NEW SERVICE
LITERATURE IS PRINTED.
5V Power dead
Q107 is defective
N
O
P
Q
R
S
T
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