LG 40LF6300-UA Service Manual page 39

EARPHONE AMP
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
HP_OUT
C6104
HP_OUT
C6100 HP_OUT
18pF
1uF R6100 R6106
10V 10K 43K
HP_OUT HP_OUT
HP_ROUT_MAIN
1% C6108
10pF
50V
HP_ROUT_AMP
+3.3V_NORMAL
4.7K
R6105
SIDE_HP_MUTE
HP_OUT
C6102
1uF
10V
IC6100
TPA6138A2
HP_OUT
+INR +INL
1 14
C6109
HP_OUT
HP_OUT 18pF HP_OUT
R6104 R6101
-INR -INL
HP_OUT 43K 10K
2 13
1%
C6106
10pF
OUTR OUTL
3 12
50V
HP_LOUT_AMP
GND_1 UVP
4 11
+3.3V_NORMAL
MUTE GND_2
5 10
VSS VDD
6 9
HP_OUT
HP_OUT
C6105 C6107
CN CP
1uF 0.1uF
7 8
16V
10V
C6103
1uF
10V
HP_OUT
C6101
1uF
10V
HP_OUT
HP_LOUT_MAIN
HEADPHONE AMP
PAGE 20
2011.09.29
61
LGE Internal Use Only