3-33
3-34
CIRCUIT DIAGRAMS
1. SMPS - POWER CIRCUIT DIAGRAM
IMPORTANT SAFETY NOTICE
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.
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.
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.
CAUTION:
Danger if fuse is incorrectly replaced.
Replace only with the type identical to fuse rating
and(or) model name described in main label.
MDS715
SMPS
EBY60928901 REV 4.1
2010. 09. 15
Summary of Contents for MDT505
Page 11: ...2 2 MEMO ...
Page 15: ...2 9 2 10 MEMO MEMO ...
Page 16: ...2 11 4 SPEAKER SECTION 4 1 FRONT SPEAKER MDS505V A60 ...
Page 17: ...2 12 4 2 PASSIVE SUBWOOFER MDS505W A90 ...
Page 19: ...2 14 MEMO ...
Page 37: ...3 18 3 VIDEO PART 1 100 FULL COLOR BAR CVBS_I Y Pb Pr 8 9 10 11 8 10 9 11 ...
Page 38: ...3 19 4 VIDEO PART 2 100 FULL COLOR BAR CVBS COMP_Y COMP_Pb COMP_Pr 12 14 13 15 12 13 14 15 ...
Page 45: ...3 26 40 42 41 11 SPINDLE CONTROL WAVEFORMS NO DISC CONDITION FIG 11 1 42 41 40 SPinD SP SP ...
Page 47: ...3 28 MEMO ...
Page 64: ...3 61 3 62 PRINTED CIRCUIT BOARD DIAGRAMS 1 MAIN P C BOARD TOP VIEW ...
Page 65: ...3 63 3 64 MAIN P C BOARD BOTTOM VIEW ...
Page 67: ...3 FRONT VFD USB MIC VOLUME P C BOARD 3 67 3 68 ...
Page 69: ...3 71 3 72 MEMO MEMO ...
