Lexmark W820 Service Manual page 114

Step Actions and Questions
9 +24VDC CHECK
Measure the voltage between J460-11 and FG on the I/O
PWB.
Is there +24VDC between J460-11 and FG?
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
Error Code 911
There is a problem with the Drum Motor.
Logic Control on the MCU PWB detected a problem with the Drum Motor.
Step Actions and Questions
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?
2 +24VDC CHECK
Measure the voltage between J460-11 and FG on the I/O
PWB.
Is there +24VDC between J460-11 and FG?
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
2-18
Service Manual
4025-XXX
"I/O PWB" on page 4-89.
"I/O PWB" on page 4-89.
Yes No
Replace the Use the Block
"Engine Diagrams in
Board (MCU the printer
PWB)" on service
page 4-92 manual to
troubleshoot a
loss of
+24VDC
Yes No
Replace the Go to Step 2
EP Cartridge
with a new one
Replace the Use the Block
"Engine Diagrams in
Board (MCU the printer
PWB)" on service manual
page 4-92 to troubleshoot
a loss of
+24VDC