Circuit Diagrams; Smps Circuit Diagram - LG S94T1-S Service Manual

CIRCUIT DIAGRAMS

1. SMPS CIRCUIT DIAGRAM

No Power
12
BD901 is Defective
11
10
9
8
7
6
5
4
No Power
F901 is Defective
3
2
1
Warning
Parts that are shaded are critical with
respect to risk of fire or electrical shock.
A B C D
Vkk No Power
D926 is Defective
No Power
D904 is Defective
No AMP Power
Q910, Q901 are Defective
S/W Error
IC901, IC902 are Defective
E F G H
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.
FLD No Power
D927 is Defective
6VA No Power
D924 is Defective
Switching Error
PC901~PC903 are Defective
PVDD No Power
D928 is Defective
I J K L M
2-69 2-70
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.
No Digitron Displayed
ZD951, ZD952 are Defective
3.8 VA No Power
D923, D922 are Defective
14 VA No Power
D921, D925 are Defective
Switching Error
IC903, IC904 are Defective
N O P Q R
SMPS
EAX63689124 Rev1.0(0)
2013.03.29
S T