Circuit Diagrams; Smps & Timer Circuit Diagram - LG BP540N Service Manual

CIRCUIT DIAGRAMS

1. SMPS & TIMER CIRCUIT DIAGRAM
No Power
12
D103~D106 are Defective
11
10
9
8
7
6
5
No Power
F101 is Defective
4
3
No Power
R101 is Defective
2
1
A B C D
No Power
D102 is Defective
S/W Error
IC101 is Defective
Warning
Parts that are shaded are critical with
respect to risk of fire or electrical shock.
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
14VA No Power
D126/D130 are Defective
5.1VA No Power
D127 is Defective
Switching Error
IC102/IC103 are Defective
I J K L M
3-57 3-58
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.
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
EAX64769304.1.1.1_SMPS_SD
2013. 11. 04
R S T