LG 55LM860V Service Manual page 33

IR & KEY
COMMERCIAL
+3.5V_ST
COMMERCIAL_IR
R4101
1K
COMMERCIAL_IR
IR
R4102
C
Q4100 10K
B
MMBT3904(NXP)
E
COMMERCIAL_IR
COMMERCIAL_IR
MMBT3904(NXP)
COMMERCIAL_IR
R4100
0
IR_BYPASS
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.
Copyright © 2012 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
+3.5V_ST
R4117 R4118
10K
10K
5% 5%
R4113
100
KEY1
R4114
+3.5V_ST 100
KEY2
C4100
0.1uF
R4103 +3.5V_ST
3.3K
IR_BYPASS +3.5V_ST
R4107
10K
R4104
C 47K
B
BLM18PG121SN1D
Q4101
E
COMMERCIAL_IR
COMMERCIAL +3.5V_ST
COMMERCIAL_IR_EU
+3.5V_ST
R4109
1K
R4105 COMMERCIAL_IR
22
R4115
IR_OUT
COMMERCIAL_IR_EU 3.3K
COMMERCIAL_IR
R4111
C
10K
Q4102
B
MMBT3904(NXP)
E
COMMERCIAL_IR_EU
R4119
C 47K
B
Q4104 COMMERCIAL_IR
E
MMBT3904(NXP)
COMMERCIAL_IR
R4108
0
COMMERCIAL_IR_US
RGB Sensor
R4123
EEPROM_SCL
100
D4105
ADUC 20S 02 010L
20V
OPT
R4124
EEPROM_SDA 100
D4101
5.6V
D4106
AMOTECH CO., LTD.
ADUC 20S 02 010L
C4102
OPT 20V
0.1uF
OPT
D4100
5.6V
AMOTECH CO., LTD.
OPT
L4100
R4125 1.5K
C4104
LED_B/GP4_LED_R
1000pF
50V
D4104 OPT
C4107
5.6V
100pF
50V AMOTECH CO., LTD.
Soft Touch Micom D/L
Zener Diode is
close to wafer
GP4_IR_10P
P4102
12507WR-10L
1
2
3
4
5
6
7
8
9
10
11
ESD for MTK
D4105-*1
ADUC 20S 02 010L
20V 10pF
ESD_MTK
D4106-*1
ADUC 20S 02 010L
20V
10pF
ESD_MTK
D4100-*1
5.6V 200pF
ADMC 5M 02 200L
ESD_MTK
D4101-*1
5.6V
200pF
ADMC 5M 02 200L
ESD_MTK
D4104-*1
5.6V 200pF
ADMC 5M 02 200L
ESD_MTK
ESD for LG1152
D4100-*2
5.6V 200pF
ADMC 5M 02 200L
ESD_LG1152
D4101-*2
5.6V 200pF
ADMC 5M 02 200L
ESD_LG1152
D4104-*2
5.6V 200pF
ADMC 5M 02 200L
ESD_LG1152
IR / KEY 2011.11.21
41
LGE Internal Use Only