LG 22LN45 Series Service Manual page 25

IR/LED and Control
R600
C
10K
B
Q600
LED_RED
MMBT3904(NXP)
R601
E
10K
R602 C
10K
B
Q601
LED_AMBER
MMBT3904(NXP)
R603
E
10K
IR_OUT(Ready)
+3.3V_ST
IR_OUT
R619
10K
+3.3V_ST
OPT
R618 R620
22 0
IR_OUT
IR_OUT
IR_OUT
C R622
R621
10K
10K
Q602 B
IR_OUT
MMBT3904(NXP)
IR_OUT
E
C604
1000pF
C
IR_OUT
Q603 B
MMBT3904(NXP)
IR_OUT
E
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 © 2013 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
KEY2
KEY1
KEY_SCL
KEY_SDA
+3.3V_ST
+3.3V_ST
R604 270 R610 330
120915
RED LED setting
: 9.6->7.9mA
Amber LED setting : 9.6mA
(IR Port protection against ESD)
R630
121018
200
100ohm->200ohm
IR
+3.3V_ST
R623
47K
IR
IR_OUT
+3.3V_ST
P600
12507WR-12L
R616 L600
BLM18PG121SN1D
3.3K
JP600
1
R617
R614
3.3K
100
JP601
2
R615
100
JP602
3
JP605
4
JP604
5
JP603
6
7
JP607
8
JP606
9
JP608
10
JP609
11
JP610
12
JP611
13
12.07.17
Change D601~3
Module
RXA3+
RXA3-
RXACK+
RXACK-
RXA2+
RXA2-
RXA1+
RXA1-
RXA0+
RXA0-
PIN22
VESA
0~0.7V
JEDIA
2.7~3.3V
PIN23
LGD
GND
NC
NC
+12V_PANEL_POWER
2012.04.13
1K/10W -> 4.7K/10W
111116
C607
C605 C606
100uF Ecap
0.1uF 10uF 1000pF
Deletion
50V 25V 50V
EAE38362801
2012.04.13
10uF/10V -> 10uF/25V
JP612
NC4_S7LRM
MODULE&CONTROL
P601
10031HR-30
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
R628
0
22
23
R629
24
0
LGD
25
26
27
28
29
30
31
EAX65077401
2012.09.15
6 12
LGE Internal Use Only