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CIRCUIT DIAGRAMS
1. SMPS CIRCUIT DIAGRAM
No Power
12
BD901 is Defective
11
10
9
8
7
6
No Power
F901 is Defective
5
4
3
2
1
A
B
C
D
No Power
D902 is Defective
No AMP Power
S/W Error
IC901, IC902 are Defective
Q902, Q951 are Defective
E
F
G
H
IMPORTANT SAFETY NOTICE
WHEN SERVICING THIS CHASSIS, UNDER NO
CIRCUMSTANCES SHOULD THE ORIGINAL DESIGN BE
MODIFIED OR ALTERED WITHOUT PERMISSION
FROM THE LG CORPORATION. ALL COMPONENTS
SHOULD BE REPLACED ONLY WITH TYPES IDENTICAL
TO THOSE IN THE ORIGINAL CIRCUIT. SPECIAL
Vkk No Power
FLD No Power
D951 is Defective
D950 is Defective
5.5 VA No Power
D952, D953 are Defective
Switching Error
IC951, IC981 are Defective
PVDD No Power
Switching Error
D981 is Defective
PC900~PC902 are Defective
I
J
K
L
M
2-63
2-64
COMPONENTS ARE SHADED ON THE SCHEMATIC
FOR EASY IDENTIFICATION.
THIS CIRCUIT DIAGRAM MAY OCCASIONALLY DIFFER
FROM THE ACTUAL CIRCUIT USED. THIS WAY,
IMPLEMENTATION OF THE LATEST SAFETY AND
PERFORMANCE IMPROVEMENT CHANGES INTO
THE SET IS NOT DELAYED UNTIL THE NEW SERVICE
LITERATURE IS PRINTED.
No Digitron Displayed
ZD951, ZD952 are Defective
14 VA No Power
D955, D956 are Defective
Warning
Parts that are shaded are critical with
respect to risk of fire or electrical shock.
N
O
P
Q
NOTE :
1. Shaded(
) parts are critical for safety. Replace only
with specified part number.
2. Voltages are DC-measured with a digital voltmeter
during Play mode.
SMPS
EAX65239501 Rev1.6(14)
2014.12.19
R
S
T
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