Xerox DocuColor 12/DCCS50

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DocuColor 12/DCCS50
IQ 40 2nd BTR HVPS RAP
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IQ 40 2nd BTR HVPS RAP
This RAP is used to isolate the cause of missing or out-of-range voltages and current.
Procedure
WARNING
Electrical Shock Hazard. In the following procedure, high DC voltage circuits will be
tested. Use extreme caution when testing these circuits. Do not touch the multimeter or
the meter leads while testing the circuits.
Set your meter to measure micro amps. Disconnect
the out
put connector from the 2nd BTR
HVPS (PL 9.2). Connect one meter lead to the supply side of the connector and the other lead
to the harness side. Make one full-color copy. Approximately -50 to -70 micro amps is mea-
sured momentarily near the end of the copy cycle.
YN
Approximately -20 to -30 micro amps is measured momentarily.
YN
Approximately 0 micro amps is measured.
YN
(This indicates that the measurement is between -1 and -19 micro amps, or -71
micr
o amp
s or higher.) Replace the 2nd BTR HVPS (PL 9.2).
Reconnect the output connector from the 2nd BTR HVPS. +24 VDC is measured
at P/J9
5-1 on the 2nd BTR HVPS during Standby.
YN
Go to F
lag 1 BSD9.9 and check for an open circuit. If OK, replace the IOT Drive
PWB
(PL 9.2).
Make one full-color copy. Approximately +1.5 VDC is measured momentarily at
P/J95-3 o
n the 2nd BTR HVPS near the end of the copy cycle.
YN
Go to F
lag 2 BSD9.9 and check for an open circuit. If OK, replace the IOT Drive
PWB
(PL 9.2).
Check for an open connection at P/J95-3,
and at P/J95-1. If OK, go to Flag 3
BSD9.9 and check for an open in the output circuit. If OK, replace the 2nd BTR
HVPS (PL 9.2).
Make another full-color copy. Approximately +4.0 VDC is measured momentarily at
P/J95-7 o
n the 2nd BTR HVPS near the end of the copy cycle.
YN
Check for an open connection at P
/J95-
7. If OK, replace the 2nd BTR HVPS (PL
9.2).
Go to Flag 4 BS
D9.9 and check for an open circuit. If OK, replace the IOT Drive PWB (PL
9.2).
Reconnect the output connector to the 2nd BTR HVPS. Approximately +11.5 is measured
at P/J95-4 on
the 2nd BTR HVPS during standby.
YN
Go to F
lag 5 BS
D9.9 and check for an open connection at P/J95-4. If OK, replace the
2nd BTR HVPS (PL 9.2).
Approximately +11.5 is measured at P/J95-
6 on the 2nd BTR HVPS during standby.
YN
Go to F
lag 6 BSD
9.9 and check for an open connection at P/J95-6. If OK, replace the
2nd BTR HVPS (PL 9.2).
Approximately +11.5 is measured at P/J95-
5 on the 2nd BTR HVPS during standby.
YN
Go to F
lag 7 BSD
9.9 and check for an open connection at P/J95-5. If OK, replace the
2nd BTR HVPS (PL 9.2).
Make one full-color copy. Voltage decreases from approximately +11.5 VDC to +0.03 VDC
moment
arily near the end of the copy cycle.
YN
Go to F
lag 7 BSD9.9 and check for an open circuit. If OK, replace the IOT Drive PWB (PL
9.2).
The 2nd BTR HVPS checks out OK. Check the following:
• 2nd BTR Roll (PL 7.10).
• Earth Plates (PL 7.10).
• W
ire Harness (PL 7.10
).
• High Voltage Lead from the IBT Assy to the 2nd BTR Roll.
A
A
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