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2-16
DocuColor 12/DCCS50
3-317 UI/IOT Communications Fail RAP, 3-318 IOT/IPS
Reissue
Status Indicator RAPs
3-317 UI/IOT Communications Fail RAP
This Fault Code indicates that a communications failure between the UI PWB and the IOT
PWB was detected.
Initial Actions
• Refer to BSD 3.1 PWB Communications (UI) and BSD 3.12 Monitoring, in this procedure:
Procedure
PO/PO the machine. If Fault Code 3-317 is still declared, perform the following:
Go to Flag 3 on BSD
3.1. +24 VDC is measured at J490-7, and +5 VDC is measured at
J490-2 on the UI PWB (PL 9.5).
YN
Perform the following:
• Go to the +24 VDC-1 Wirenet and check for an open/short circuit
• Go to the +24 V
DC
Power (IIT/IPS LVPS) RAP
• Go to the +5 VDC-1 Wirenet and check for an open/short circuit
• Go to the +5 V
DC Power (IIT/IPS) RAP
Perform the following:
•Go to Flag
1 on Flag 2 on BSD 3.1 and check the following wires for an open/short circuit:
– Check the wire between IOT CPU PWB P/J404-B
14 and UI PWB P/J490-10
– Check the wire between IOT CPU PWB P/J404-B
13 and UI PWB P/J490-11
– Check the wire between IOT CPU PWB P/J404-B
16 and UI PWB P/J490-12
– Check the wire between IOT CPU PWB P/J404-B
15 and UI PWB P/J490-13
• Replace the UI PWB (PL 9.5)
• Replace the IOT CPU PWB (PL 9.
2)
3-318 IOT/IPS Communications Fail RAP
This Fault Code indicates that a communication failure between the IOT PWB and the IPS
PWB was detected.
Initial Actions
• Refer to BSD 3.2 PWB Communications (IPS) and BSD 3.12 Monitoring in this proce-
dure:
Procedure
Perform the following:
• PO/PO the machine. If Fault Code 3-318 is still declared, perform the following:
•Go to Flag 1
and Flag 2 on BSD 3.2. Check the following wires for short/open circuit:
– Between Post IPS PWB P571-13 and
IOT CPU PWB P/J404-A3
– Between Post IPS PWB P571-14 and
IOT CPU PWB P/J404-A4
– Between Post IPS PWB P571-1
1 and IOT CPU PWB P/J404-A1
– Between Post IPS PWB P571-12 and
IOT CPU PWB P/J404-A2
• Replace the Post IPS PWB (PL 3.
5)
• Replace the IOT CPU PWB (PL 9.
2)
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