LG 42LE7300, Service Manual

Page: 20 / 40

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
2009.06.18 EUROBBTV
R914
10K
OPT
C909
47pF
50V
REAR_AV
HP_LOUT
+3.3V_NORMAL
R920
470K
REAR_AV
D909
5.6V
REAR_AV
R912
1K
R925
10K
REAR_AV
R921
470K
REAR_AV
JK902
PPJ233-01
REAR_AV
4A
[YL]O-SPRING
5A
[YL]E-LUG
3A
[YL]CONTACT
4B
[WH]C-LUG
5C
[RD]E-LUG
4C
[RD]O-SPRING
3C
[RD]CONTACT
HP_DET
Q901
MMBT3904-(F)
OPT
E
B
C
JK901
KJA-PH-0-0177
3 DETECT
4 L
5 GND
1 R
REAR_AV_R_IN
Q902
MMBT3904-(F)
OPT
E
B
C
HP_ROUT
SIDE_HP_MUTE
C902
1000pF
50V
OPT
Q900
MMBT3904-(F)
OPT
E
B
C
D908
5.6V
REAR_AV
R926
1K
REAR_AV
REAR_AV_CVBS
R917 10K
+3.3V_NORMAL
Q903
MMBT3904-(F)
OPT
E
B
C
+3.5V_ST
D907
5.6V
REAR_AV
C903
1000pF
50V
OPT
REAR_AV_L_IN
AV_CVBS_DET
JK900
PPJ234-01
5A
[GN]O-SPRING
6A
[GN]E-LUG
4A
[GN]CONTACT
7B
[BL]E-LUG-S
5B
[BL]O-SPRING
7C
[RD]E-LUG-S
5C
[RD]O-SPRING_1
5D
[WH]O-SPRING
4E
[RD]CONTACT
5E
[RD]O-SPRING_2
6E
[RD]E-LUG
COMP2_Pr
COMP2_DET
5.6V
D902
D900
5.6V
D901
5.6V
R907
470K
COMP2_R_IN
+3.3V_NORMAL
COMP2_L_IN
COMP2_Pb
COMP2_Y
R902
10K
R903
1K
0
R957
REAR_AV
C910
100pF
50V
REAR_AV
C941
1uF
25V
REAR_AV
C940
1uF
25V
REAR_AV
R927
0
REAR_AV
R928
0
REAR_AV
C916
100pF
50V
REAR_AV
C915
100pF
50V
REAR_AV
C931
100pF
50V
C904
27pF
50V
L904
270nH
C932
27pF
50V
C906
27pF
50V
C933
27pF
50V
L903
270nH
C934
27pF
50V
C905
27pF
50V
L902
270nH
C939
100pF
50V
C935
1uF
25V
R910
0
R961
470K
C936
1uF
25V
C937
100pF
50V
R909
0
D904 5.5V
D905
5.5V
D906
5.5V
REAR_AV
D910
5.1V
D903
5.1V
9
ETC SUB BOARD I/F
EARPHONE BLOCK
New Item Development
COMPONENT
Rear CVBS
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Only for training and service purposes LGE Internal Use Only