Circuit Diagrams; Smps Circuit Diagram - LG S65T1-S Service Manual

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
WHEN SERVICING THIS CHASSIS, UNDER NO
CIRCUMSTANCES SHOULD
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
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
2-61 2-62
ON THE SCHEMATIC FOR EASY IDENTIFICATION.
THE ORIGINAL 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