Page 1
CIRCUIT DIAGRAMS
1. SMPS CIRCUIT DIAGRAM
12
11
10
9
No Power
BD901 is Defective
No Power
D904 is Defective
FLD No Power
D927 is Defective
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.
Vkk No Power
D926 is Defective
6VA No Power
D924 is Defective
3.8VA No Power
D922, D923 are Defective
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 IMPROVE MENT CHANGES
INTO THE SET IS NOT DELAYED UNTIL THE NEW
SERVICE LITERATURE IS PRINTED.
14VA No Power
D925 is Defective
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.
8
7
6
5
4
3
No Power
F901 is Defective
S/W Error
IC901, IC902 are Defective
Switching Error
PC901, IC903 are Defective
Switching Error
PC903, IC904 are Defective
No AMP Power
Q910, PC902,Q914 are Defective
AMP output No Power
D908 is Defective
12V No Power
IC951 is Defective
2
Warning
1
A
Parts that are shaded are critical with
respect to risk of fire or electrical shock.
EBY61089401, REV7.3
B C D E F G H I J K L M N O P Q R ST
SMPS
2011.02.24
2-1262-125
Loading...