LG 50PX950 Service Manual page 34

IR B/D to Main B/D
P100
12507WS-12L
EAG58732902
$0.09115
1 IR R139 47
2 GND
C105
READY
3 KEY1
C106
READY
4 KEY2
5 LED_RED
ZD106 +3.3V
6 GND 5.6B
7 SCL
8 SDA
9 GND
ZD105
10 +3.3V_ST
5.6B
11 +3.3V
12 LED_WHITE
ZD107
13
5.6B
Test Point
for Dubugging
SCL/SDA/VDD/GND <==Must Naming
2mm Pitch (1mm size)
Touch Film to IR B/D
P101
3019-56108_8P
EAG61171201
$0.1
R130
220
1
K1-CH+
R131
220
2
K1-CH-
R132
220
3
K2-VOL+
R133
220
4
K2-VOL-
R134
220
5
K2-OK
R135
220
6
K2-MENU
R136
220
7
K1-INPUT
R137
220
8
K1-POWER
9
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 © 2010 LG Electronics Inc. All rights reserved.
Only for training and service purposes
GREEN EYE SENSOR
IC101
SDA-Sensor
CM3212HPA3OP
EBD60010902
$0.355
GND 1
IR
+3.3V
SDA 2
KEY1
4.7K
ADDR_0x90
R102
SAHS 3
KEY2
R103
0
ADDR_0x70
LED-RED
Default Setting : 0X70
SCL-Sensor
SDA-Sensor
IR RECEIVER
+3.3V_ST
$0.1295
IC102
KSM-983TM2CL(LG)
5V_Multi
VOUT
LED-WHITE
1
ZD100
GND
5.6B
2
VCC
3
TOUCH SENSOR
R104 620 0.2V
KEY1
1.6V
R105 10K
0.9V D2 1
R106 3.6K
KEY2
0.2V D3_INTB 2
R107 620
2.3V D4 3
R108 27K
R109 1.6V D5 4
10K
0.9V D6 5
R110 3.6K
2.3V D7 6
R111 27K
ZD104
ZD103
5.6B 5.6B
ESD OPT
ESD OPT
C101
0.1uF
16V
LED
+3.3V
6 VDD
Integration
5 SCK
SCL-Sensor
4 SET
LED-RED
R113 C103 C107
910K 0.1uF 10uF
1% 16V 16V
+3.3V_ST
READY
R112
5V_Multi -> +3.3V
4.7K
+3.3V_ST
IR
ZD101
5.6B
R114
330
C100 C102 ZD102
10uF 0.1uF 5.6B
16V 16V
< Modification List >
07/14 : Add TP 8EA for Test Jig (at P101)
: Delete LD102
08/17 : Change R104,R107(1K ->620), R106,R110(4.3K->3.6K)
09/08 : Change Resister size(1608 -> 1005) [All Resistors]
18 NC_3
17 NC_2
16 CS7
IC100
K1-POWER
CT1C08_MLF24
15 CS6
EAN60986201
K1-INPUT
$0.38
14 CS5
K2-MENU
09/24 : Change the Power Path : Add LDO Block for +5V -> +3.3V
13 CS4
K2-OK
11/13 : Change Touch sensing line Serial resister : 1K -> 220 ohm
12/23 : Add ESD Diode to LED Base(ZD106,ZD107)
05/07 : Add R139 for IR ESD,& CSR Open(BD)
+3.3V_ST
$0.066
LD100
Integration
EAV59588901
C
R129
R117
0
B
4.7K
Q101
LED-WHITE
2SC3875S(ALY)
READY
E
C108
33uF
10V
LED Position !!!
B.W - RED - B.W
LD101 - LD100 - LD103
+3.3V
IC103
AP2121N-3.3TRE1
VIN VOUT
3 2
1
C110 C111
GND
10uF 10uF
6.3V 6.3V
Integration block added at LED Red (C108,C109, R129,R138)
ESD protection block added at 8pin wafer (R130 ~ R137, 1KOhm)
Add ESD Diode to 3.3V_ST(ZD105)
GP2 PK90/70
EAX61369001
5V_Multi
$0.176
$0.176
LD101
LD103
EAV59588801
EAV59588801
C
R138
R118
0
4.7K B
Q102
2SC3875S(ALY)
READY
E
C109
33uF
10V
2010/05/07
LGE Internal Use Only