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Inverter CBA, Function CBA & IR Sensor CBA Bottom View (main Inverter CBA)
Because a hot chassis ground is present in the power supply
circuit, an isolation transformer must be used when repairing.
Also, in order to have the ability to increase the input slowly,
when troubleshooting this type of power supply circuit,
a variable isolation transformer is required.
Not Used
CN1100
C1104
T1100
COLD
D1961
J1051
GND
J1055
R1937
C1910
J1089
CN1900
CN1901
F
Inverter CBA
NOTE:
The voltage for parts in hot circuit is measured using
hot GND as a common terminal.
IR Sensor CBA
DVD
POWER
RS102
D106
D104
D105
STD BY
C113
C1106
C1108
H.V. CAUTION
*
A
BA17F4F0103 2
C1906
J1027
HOT
GND
T1950
BC1931
BC1930
Q1930
D1933
D1931B
D1931
Q1932
+24V
C1905
IC1930
Q1931
Q1970
J1101
IC1931
Q1971
E
*
When you conduct on a component level repair for the Inverter CBA for any models within this service manual,
make sure to refer the right Block Diagrams, Schematic Diagrams/CBA and Parts List.
For the main CBA, the last digit of the board number, which is engraved on every board, should be a number(e.g. BA17F4F0103 2).
For the sub CBA, the last digit of the board number, which is engraved on every board, should be an alphabet(e.g. BA17F4F0103 Z).
Function CBA
D101
RS101
STB BY
SW101A
C101
CN1101
C1110
T1101
C1700
Q1702
Q1703
D1707
LN2
D1704
D1707B
NH2
J1043
C1993
PROT3
J1046
PROT2
J1049
J1050
J1053
C1994
PROT1
J1056
D1991
R1305
J1085
GND
J1084
GND
+24V
J1090
J1088
D1971
D1973
J1098
J1102
PROTECT3
14
2
BL-ADJ
CN1001
J1120
C1983
15
1
J1108
GND
BL-SW
J1107
D
C
11-34
SW154
SW105B
SW101B
SW130B
SA104B
CH
CH
DOWN
UP
PATTERN
R109
MENU
R152
R108
R111
R112
R153
J101
SW151
SW103A
SW152
R154
SW153
SW104A
CN1102
C1112
T1102
C1701
Q1700
Q1701
J1030
J1031
J1091
D1502
REG 7.5V
J1059
PROT
J1063
R1303
Q1204
BST2
GND
D1201
STB
J1070
J1109
D1300
J1072
D1300B
DC12V
GND
1
12
13
24
JS1200
Q1202
D1203
B
SW107B
SW155
SW106B
VOL
UP
VOL
4
DOWN
R115
R113
B
BA17F4F0103 2
R114
SW105A
SW106A
SW107A
C1114
3
J1026
GND
J1028
GND
2
J1067
VS4
J1077
1
A
BA17F4F01032
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