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CIRCUIT DIAGRAMS
1. SMPS(POWER) CIRCUIT DIAGRAM
12
11
10
9
8
7
6
5
4
3
2
1
NOTE)
Warning
NOTES)
Symbol denotes AC ground.
NOTE)
Parts that are shaded are critical
NOTE)
With respect to risk of fire or
NOTES)
Symbol denotes DC chassis ground.
NOTE)
electricial shock.
A
B
C
D
E
F
G
H
I
3-17
IMPORTANT SAFETY NOTICE
WHEN SERVICING THIS CHASSIS, UNDER NO
CIRCUMSTANCES SHOULD THE ORIGINAL DESIGN
BE MODIFIED OR ALTERED WITH OUT PERMISSION
FROM THE LG CORPORATION. ALL COMPONENTS
SHOULD BE REPLACED ONLY WITH TYPES
IDENTICAL TO THOSE IN THE ORIGINAL CIRCUIT.
J
K
L
M
N
3-18
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
with specified part number.
DIFFER FROM THE ACTUAL CIRCUIT USED. THIS
2. Voltages are DC-measured with a digital voltmeter
WAY, IMPLEMENTATION OF THE LATEST SAFETY
during Play mode.
AND PERFORMANCE IMPROVEMENT CHANGES
INTO THE SET IS NOT DELAYED UNTIL THE NEW
SERVICE LITERATURE IS PRINTED.
O
P
Q
R
SMPS
SB74
2009. 07. 10
S
T
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