Xerox DocuColor 12/DCCS50

1/05
2-15
DocuColor 12/DCCS50
3-311 IOT-SYS Logic Fail RAP, 3-315 IOT/IPS Com-
Status Indicator RAPs
Reissue
3-311 IOT-SYS Logic Fail RAP
The IOT-SYS Software Logic Failure was detected after a certain time period (the NVM value).
Initial Actions
• Refer to BSD 3.12 Monitoring in this procedure:
Procedure
Perform the following:
• PO/PO the machine
• Reset the connectors on the IOT CPU PWB (PL 9.2)
•
Replace the IOT CPU PWB (PL 9.
2)
3-315 IOT/IPS Communications Fail RAP
The 3-315 Fault Code indicates that a communication failure between the IOT PWB and the
Post IPS PWB was detected.
Initial Actions
• Ensure that P571 is firmly connected to the Post IPS PWB.
• Refer to BSD 3.2 PWB Communications (IPS) and BSD 3.12 Monitoring in this proce-
dure:
Procedure
There is +3.5 VDC from J 570 pin 1 to pin 6 on the Post IPS PWB.
YN
Go to F
lag 5 on BSD 3.2. Check for an open or a short circuit to GND. If the wires are OK,
replace t
he IIT LVPS (PL 3.5).
There is +3.5 VDC from J 517 pin 3 to pin 4 on the Pre IPS PWB.
YN
Go to F
lag 6 on BSD 3.2. Check for an open or a short circuit to GND. If the wires are OK,
replace t
he IIT LVPS (PL 3.5).
There is +5 VDC from J 517 pin 1 to pin 2 on the Pre IPS PWB.
YN
Go to F
lag 6 on BSD 3.2. Check for an open or a short circuit to GND. If the wires are OK,
replace t
he IIT LVPS (PL 3.5).
There is +13.3 VDC from J 517 pin 7 to pin 5 on the Pre IPS PWB.
YN
Go to F
lag 6 on BSD 3.2. Check for an open or a short circuit to GND. If the wires are OK,
replace t
he IIT LVPS (PL 3.5).
Perform the following:
• PO/PO the machine
•Go to Flag 3 and F
lag 4 on BSD 3.2. Check the following wires for a short/open circuit:
– Between Post IPS PWB P571-23 and
IOT CPU PWB P/J404-A13
– Between Post IPS PWB P571-24 and
IOT CPU PWB P/J404-A14
– Between Post IPS PWB P571-25 and
IOT CPU PWB P/J404-A11
– Between Post IPS PWB P571-26 and
IOT CPU PWB P/J404-A12
• Replace the PRE IPS PWB (PL 3.5)
•
Replace the IOT CPU PWB (PL 9.
2)
• Replace the Post IPS PWB (PL 3.
5)
• Replace the MEM SYS PWB (PL 3.
5)