Circuit Diagrams - LG HX966TZ Service Manual

CIRCUIT DIAGRAMS

1. SMPS CIRCUIT DIAGRAM
No Power
12
BD901 is Defective
11
10
9
8
7
6
5
No Power
F901 is Defective
4
3
2
Warning
Parts that are shaded are critical with
1
respect to risk of fire or electrical shock.
A B C D
No Power
D904 is Defective
S/W Error
IC901, IC902 are Defective
E F G H I
2-127
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 Vkk No Power 6VA No Power
D927 is Defective D926 is Defective D924 is Defective
3.8VA No Power
D922, D923 are Defective
No AMP Power
Q910, PC902,Q914 are Defective
Switching Error
PC901, IC903 are Defective
AMP output No Power
D908 is Defective
Switching Error
PC903, IC904 are Defective
J K L M
2-128
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.
14VA No Power
D925 is Defective
12V No Power
IC951 is Defective
N O P Q R
SMPS
EBY61089401, REV7.3
2011.02.24
S T