NEC MultiSync LCD1970NX Service Manual page 102

MODEL LCD1970NX(B)/(C) SCHEMATIC DIAGRAM MAIN BOARD (Key Pad EEPROM) (4/4)
S404
1
13
13 2
3
4
5
6
7
8
9
10
14
14 11
12
C496
HEADER 12
0.1uF
GND
AT24C16
1
A0
2
A1
3
A2
4
VSS
stuffing
Option
GND
C497 C498 C499 C500 C501 C502
0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF
+5V
U408
8
VCC
7
WP
6
SCL
5
SDA
GND
B422 MCB1608S121G
1 2
B423 MCB1608S121G
1 2
B424 MCB1608S121G
1 2
B425 MCB1608S121G
1 2
B426 MCB1608S121G
1 2
B427 MCB1608S121G
1 2
B428 MCB1608S121G
1 2
B429 MCB1608S121G
1 2
B430 MCB1608S121G
1 2
B431 MCB1608S121G
1 2
C503 C504 C505
0.1uF 0.1uF 0.1uF
10-4
R476 100R
R477 100R
Q403 Q404
DTC114TKA DTC114TKA
SCL 2
SDA 2
+5V
LED_GREEN 2
LED_AMBER 2
RESET 2
SELECT 2
LEFT 2
RIGHT 2
MINUS 2
PLUS 2
EXIT 2
POWER_ON 2