LG 39LY340H Service Manual page 28

IR/LED + Digital Eye + Control
+3.5V_ST
BLM18PG121SN1D
IR_OUT
R4610
22
IR_OUT
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 ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
+3.5V_ST
R4604
R4603
10K
10K
1% 1%
R4601
100
KEY1
C4602
0.1uF
16V
R4602
100
KEY2
C4603
0.1uF
16V
L4600
C4600 C4601
+3.5V_ST
0.1uF 1000pF
LED_R/BUZZ
16V 50V
R4600
3.3K
IR
+3.5V_ST
IR_OUT_EU +3.5V_ST
R4612
IR_OUT
1K
R4614
1K
IR_OUT_EU
IR_OUT_EU
R4613
C 10K
Q4616
B
2SC3052 IR_OUT
E
R4615
C 47K
SENSOR_SCL
B
IR_OUT
Q4617 E
2SC3052
SENSOR_SDA
IR_OUT_US
R4611
0
P4600
12507WR-10L
1
2
3
4
R4606
1.8K
5
VA4600
LED_R_Zener
6
7
VA4601
C4604
100pF
IR_Zener
50V
8
9
+3.3V_Normal
10
11
C4605
R4605 R4607
1K 1K 18pF
50V
R4608 100
R4609 100
C4606
18pF
50V
OPT
P4601
12507WR-08L
1
2
3
4
5
6
7
8
9
M1A_L14 13/10/16
IR/LED 6
LGE Internal Use Only