LG 42PM4700 Service Manual page 21

for Debugging
+3.3V_ST
PCB TOP
P900
12507WS-04L
DEBUG
1
Debug
2
3
RESET
4
5
I2C_SCL3
I2C_SDA3
EEPROM_SDA
EEPROM_SCL
SUB_SCL
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.
MICOM,SUB ASSY
Copyright © 2012 LG Electronics Inc. All rights reserved.
Only for training and service purposes
+3.3V_ST
IC900
C905 C906
M24C16-WMN6T
12pF 12pF
50V 50V
NC/E0 VCC
C900
1 NC VCC 8
0.1uF
R903
16V
47K
NC/E1 WC
2 E1 WC 7
NC/E2 SCL
3 E2 SCL 6 EEPROM_SCL
R908
22
VSS SDA
4 GND SDA 5
EEPROM_SDA
R909
22 +3.3V_ST
X901
32.768KHz
22
+3.3V_MULTI
+3.3V_ST
C903
0.1uF
+3.3V_ST
16V
C902
R904 R907
1uF
10K 10K
10V
R917
4.7K
P140/PCLBUZ0/INTP6
R910 22 1 36
P00/TI00/TXD1
R911 22 2 35
P01/TO00/RXD1
3 34
P130
0 4 33
DISP_EN IC901
R949
P20/ANI0/AVREFP
5 32
+3.3V_ST LED_R
R5F100GEAFB P21/ANI1/AVREFM
6 31
IR_TX
P22/ANI2
R916 22 7 30
HDMI_CEC
P23/ANI3
R912 R913 8 29
10K 10K
P24/ANI4
9 28
P25/ANI5
10 27
P26/ANI6
11 26
P27/ANI7
12 25
+3.3V_ST
R914
4.7K
33K
R928
33K
R929
OPT
R905
100K
EDID_WP
C
B Q900
MMBT3904(NXP)
E
MICOM MODEL OPTION
**ALL TOOL : LED_RED
PIN NAME PIN NO. HIGH LOW
MODEL1_OPT_0 8 ATSC DVB
MODEL1_OPT_1 11 PZ55 PZ75/PZ95
MODEL1_OPT_2 30 PZ95 PZ55/PZ75
MODEL1_OPT_3 31 - -
PCB TOP
FOR USE MICOM RESET
R930
10K
RESET
C907
0.1uF
16V
Debug
R918
3D_SYNC_RF
+3.3V_MULTI
R902
10K
OPT
RL_ON
SC_MUTE
KEY2
KEY1
MODEL1_OPT_0
MODEL1_OPT_1
MODEL1_OPT_2
MODEL1_OPT_3
+3.3V_MULTI
M_REMOTE_RX
M_REMOTE_TX
+3.3V_ST
MODEL1_OPT_0
MODEL1_OPT_1
MODEL1_OPT_2
MODEL1_OPT_3
to Sub Ass'y
P901
SMAW200-H16S2
1 2
JP902
3 4
JP903
R935
22
5 6
JP904
R939
22
7 8
JP905
R940
22
9 10
M_REMOTE_RST
JP906
OPT
11 12
M_REMOTE_ISP
JP907
13 14
3D_SYNC_RF
JP908
15 16
17
+3.3V_ST
R921
4.7K
OPT
R950
22
OPT IR
C914 C910
10pF 680pF
50V 50V
+3.3V_ST
R947 R946 R943
JP909
4.7K 10K 10K
R951
22
KEY1
JP910
C915 C911
10pF 220pF
50V 50V
OPT
R952
JP911
22
KEY2
C916 C912
10pF 220pF
JP912
50V 50V
OPT
R953
22
LED_R
JP913
C917 C913
10pF 10pF
50V 50V
OPT
JP914
R944
22
JP915
SUB_SCL
C908
10pF
50V
JP916
R945 OPT
22
SUB_SDA
C909
68pF
50V
+3.3V_ST
C918
10uF
6.3V
LGE Internal Use Only