LG 49UF6700 Service Manual page 41

Headphone
RS-232C Control INTERFACE
Close to the Main IC
HP_LOUT
+3.5V_ST
E
OPT
OPT
Q3001
OPT MMBT3906(NXP)
C R3001 B
R3000 3.3K
1K C
B
SIDE_HP_MUTE
Q3000
MMBT3904(NXP)
E
OPT
HP_ROUT
Close to the Main IC
+3.5V_ST
C3006
0.33uF
RS232C_PHONE RS232C_PHONE
RS232C_PHONE C3007
0.1uF
IC3001
MAX3232CDR
C1+ VCC
RS232C_PHONE
1 16
C3008
0.1uF
V+ GND
RS232C_PHONE
2 15
C3009
0.1uF
C1- DOUT1
3 14
C2+ RIN1
RS232C_PHONE
4 13
C3010
0.1uF
C2- ROUT1
5 12
V- DIN1
RS232C_PHONE 6 11
C3011
0.1uF
DOUT2 DIN2
7 10
RIN2 ROUT2
8 9
EAN41348201
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
HEAD_PHONE
L3000
5.6uH HEAD_PHONE
HEAD_PHONE
C3000 OPT C
C3004 HEAD_PHONE
10uF C3002
R3002
4.7uF B
16V 1000pF Q3002
1K
10V MMBT3904(NXP)
50V
OPT
E
HEAD_PHONE
L3001
HEAD_PHONE
5.6uH
C3001 OPT C
HEAD_PHONE HEAD_PHONE
C3005 10uF C3003
R3003
B
4.7uF 16V 1000pF Q3003
1K
MMBT3904(NXP)
10V 50V
OPT
E
OPT
ZD3001
ADUC 20S 02 010L
20V
RS232C_PHONE
R3008
0
PM_RXD
RS232C_PHONE
R3009
0
PM_TXD
E
Q3004
MMBT3904(NXP)
PHONE_JACK
B
OPT
JK3000
+3.3V_NORMAL
C PEJ038-3B6
GND 5
HEAD_PHONE
R3005
L 4
10K
DETECT 3
HP_DET
R3004
1K
HEAD_PHONE R 1
E
Q3005
MMBT3904(NXP)
B
OPT
C
RS232C_PHONE
R3006
100
RS232C_PHONE
R3007
100
OPT
ZD3002
ADUC 20S 02 010L
20V
M1A_URSA9_UD 2014.04.24
HEAD_PHONE_EU 30
LGE Internal Use Only