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Service Manual – SC401, SCRUBTEC 344
04 - Control System - Battery
User Interface Controller (EB2)
Measure and record the voltage at each of the Main machine controller pins Always use battery negative as
your reference point for your black voltmeter lead
J201
12 3 4 5 6 7 8
12 3 4 5 6 7 8
Figure 51:
PIN
Color
Circuit Description
Measured
Comments
1
Grey
SPI clock
0 - 5 V
2
Yellow
SPI MOSI
0 - 5 V
3
Green
SPI MISO
0 - 5 V
4
Pink
SPI CS3
0 - 5 V
5
White
Power supply -
0.00 V
6
Brown
Power
5.10 V (Machine ON)
7
Blue
Power button output
23.85 V (While pressing Main button)
8
Red
Power button input
23.85 V (Machine ON and OFF)
Left Operator’s Presence Sensor
1 2 3
1 2 3
Figure 52:
PIN
Color
Circuit Description
Measured
Comments
1
Red
Left operator presence sensor
supply -
0.03 V
Machine ON
2
Black
Left operator presence sensor
5.10 V
Machine ON
3
White
Left operator presence sensor
input
4.26 V (No operator)
0.09 V (With operator)
