E.F. Johnson Company 5100 Series Service Manual page 138

3,5,15 MOSI
18 SPICLK_L
3 LCD_1
3 LCD_2
3 LCD_3
SW_VD3_3
3,4,6,8,11,14,15,16 nHRESET
R58
100K
R252
Q12
MMBT3904TT1
100K
R57
Q13
MMBT3904TT1
100K
GND
5500-420 USER INTERFACE BOARD VER C SCHEMATIC (PAGE 13 OF 18)
8-62
C103
1uF
SW_VD3_3
GND
C104 C105 C106 C107
1uF 1uF 1uF 1uF
C108 C109 C110 C111
2.2uF 2.2uF 2.2uF 2.2uF
To LCD Display
J4
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
FPZ-18
GND
SW_VD3_3
C112
0.01uF
GND