3-58
3-57
A
1
2
3
4
5
6
7
8
9
10
11
12
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
Warning
Parts that are shaded are critical with
respect to risk of fire or electrical shock.
No Power
D103~D106 are Defective
No Power
D102 is Defective
S/W Error
IC101 is Defective
Switching Error
IC102/IC103 are Defective
14VA No Power
D126/D130 are Defective
5.1VA No Power
D127 is Defective
No Power
R101 is Defective
No Power
F101 is Defective
SMPS
EAX64769304.1.1.1_SMPS_SD
2013. 11. 04
cjhwhjp{vyGjohyhj{lypz{pje
ZYX]GzplGGaGs
X]W_GzplGGaGz
cjvtwvulu{Gzple
jvnGeG^yGeG\yGeG\}
YWXYGzplGGaGt
CIRCUIT DIAGRAMS
1. SMPS & TIMER CIRCUIT DIAGRAM
WHEN SERVICING THIS CHASSIS, UNDER NO
CIRCUMSTANCES SHOULD THE ORIGINAL
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
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 IMPROVEMENT CHANGES
INTO THE SET IS NOT DELAYED UNTIL THE NEW
SERVICE LITERATURE IS PRINTED.
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.
IMPORTANT SAFETY
NOTE :
Summary of Contents for BP540
Page 63: ...3 50 WAVEFORMS OF MAJOR CHECK POINT 1 1 SYSTEM PART 1 IC501 MT8560 X TAL 27 MHz 1 ...
Page 64: ...3 51 2 SYSTEM PART 2 SYSTEM MEMORY IC601 BA0 2 IC601 WE 3 IC601 CAS 4 IC601 CK 5 2 3 5 4 ...
Page 65: ...3 52 3 HDMI PART H_SDA 6 H_SCL 7 HDMI_CLK_N 8 HDMI_0_N 9 9 8 7 6 ...
Page 69: ...3 56 MEMO ...
Page 77: ...3 72 3 71 PRINTED CIRCUIT BOARD DIAGRAMS 1 MAIN P C BOARD TOP VIEW BOTTOM VIEW ...
Page 79: ...3 76 3 75 MEMO MEMO ...
Page 91: ...4 12 MEMO ...
