Nilfisk-Advance R 253 9087362020 Service Manual page 46

Service Manual – Scrubtec R 253 - RA40
Shop Measurements - Function Electronic Board (EB1) (continues)
J1 - 12 Ways
Figure 36
PIN Color Circuit Description
1 Red Key electronic board power supply +
2 Orange Return from USER key
3 Or/Blk Key reader power supply circuit
4 Wh/Blk Key Identification
5 Black External power supplies -
6
White Display electronic board power supply
+
7 Brown Enabling input from display electronic
board
8 Green Display electronic board serial +
9 Yellow Display electronic board serial -
10 Violet Pedal power supply +
11 Vi/Blk Return from pedal
12
Blue Return from steering microswitch
Measured
24.4V
0.02V
23.7V
8.65V
0V
1.45V
1.21V
0.03V
23.1V
0V
22.7V
4.5V
4.0V
23.7V
0.01V
4.82V
4.98V
0.003V
Control System
Comments
Off or On
Key not in slot
With either gray or yellow key in slot
With either gray or yellow key in slot
Key not in slot
Gray Operator Key
Yellow Super User Key
Vac On
Key In (all condition)
Power Off (Timed out)
Power On
Pedal at rest
Pedal pressed full forward
Straight ahead (switch pressed)
Sharp turn (Switch released)
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