4-31
TROUBLESHOOTING
“Confidential, Do Not Duplicate without written authorization from NEC.”
1-3-8. Keypad Board side
Keypad Board side
J602 LCD Module
GND
1
–
GND
5V
2
g
LCD Module Power Source
V0
3
f
Input Voltage for LCD
LCD_RS
4
g
LCD Module; H : Data signal, L : Instruction signal
LCD_R_Win
5
g
LCD Module; H : Read Mode, L : Write Mode
LCD_E
6
g
LCD Module; Read/Write enable signal
–
7
–
–
–
8
–
–
–
9
–
–
–
10
–
–
LCD_B4
11
LCD Module Data stream 4
LCD_B5
12
LCD Module Data stream 5
LCD_B6
13
LCD Module Data stream 6
LCD_B7
14
LCD Module Data stream 7
VLED
15
LED Module Backlight Power source
GND
16
–
GND
–
17
–
–
–
18
–
–
–
19
–
–
–
20
–
–
Summary of Contents for NP-NC900C-A
Page 199: ......
