2-18 Service Manual
4025-XXX
Error Code 911
There is a problem with the Drum Motor.
Logic Control on the MCU PWB detected a problem with the Drum Motor.
9 +24VDC CHECK
Measure the voltage between J460-11 and FG on the I/O
PWB.
Is there +24VDC between J460-11 and FG?
Replace the
“Engine
Board (MCU
PWB)” on
page 4-92
Use the Block
Diagrams in
the printer
service
manual to
troubleshoot a
loss of
+24VDC
10 The following printer FRUs and areas are associated with this
specific problem. One or more of these FRUs or areas may
have failed partially or completely. If you cannot isolate this
problem using the steps in this Service Check, replace each
FRU or troubleshoot each area listed below, one at a time, until
you isolate and solve the problem.
• Wiring and connectors linking the FRUs
• I/O PWB - Go to “I/O PWB” on page 4-89.
Step Actions and Questions Yes No
1 DRUM MOTOR TEST
Remove the EP Cartridge from the printer.
Enter Diagnostics Mode to run a print test.
Does the Drum Motor rotate during the print test?
Replace the
EP Cartridge
with a new one
Go to Step 2
2 +24VDC CHECK
Measure the voltage between J460-11 and FG on the I/O
PWB.
Is there +24VDC between J460-11 and FG?
Replace the
“Engine
Board (MCU
PWB)” on
page 4-92
Use the Block
Diagrams in
the printer
service manual
to troubleshoot
a loss of
+24VDC
3 The following printer FRUs and areas are associated with
this specific problem. One or more of these FRUs or areas
may have failed partially or completely. If you cannot isolate
this problem using the steps in this Service Check, replace
each FRU or troubleshoot each area listed below, one at a
time, until you isolate and solve the problem.
• Wiring and connectors linking the FRUs
• I/O PWB - Go to “I/O PWB” on page 4-89.
Step Actions and Questions Yes No
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