2-63 2-64
A
1
2
3
4
5
6
7
8
9
10
11
12
B C D E F G H I J K L M N O P Q R ST
Warning
Parts that are shaded are critical with
respect to risk of fire or electrical shock.
No Power
BD901 is Defective
No Power
D902 is Defective
FLD No Power
D950 is Defective
Vkk No Power
D951 is Defective
No Digitron Displayed
ZD951, ZD952 are Defective
No Power
F901 is Defective
No AMP Power
Q902, Q951 are Defective
PVDD No Power
D981 is Defective
Switching Error
IC951, IC981 are Defective
S/W Error
IC901, IC902 are Defective
Switching Error
PC900~PC902 are Defective
5.5 VA No Power
D952, D953 are Defective
14 VA No Power
D955, D956 are Defective
SMPS
EAX65239501 Rev1.6(14)
2014.12.19
CIRCUIT DIAGRAMS
1. SMPS CIRCUIT DIAGRAM
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
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.
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.
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