2-16 Service Manual
4025-XXX
Error Code 910
There is a problem with the Main Motor.
Logic Control on the MCU PWB detected a problem with the Main Motor.
2 LVPS +5VDC CHECK
Measure the voltage between J400-1 and FG, and between
J400-2 and FG on the MCU PWB.
Is there +5VDC between J400-1 and FG, and +5VDC
between J400-2 and FG?
Go to step 3 Go to the
“Printer
Wiring
Diagrams”
on page 5-14
to
troubleshoot a
loss of +5VDC
3 I/O PWB REPLACEMENT
Replace the “I/O PWB” on page 4-89
Does the error code appear?
Go to step 4 Problem
solved
4 MCU PWB REPLACEMENT
Replace the “Engine Board (MCU PWB)” on page 4-92
Does the error code appear?
Go to step 5 Problem
solved
5 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
• ESS PWB - Go to “Controller Board (ESS PWB)” on
page 4-94.
• EP Cartridge
Step Actions and Questions Yes No
1 DRIVE ASSEMBLY INSPECTION
Remove the Rear Cover so you can observe the Main Motor
and Drive Assembly.
Hand rotate (counterclockwise) the Main Motor.
Can you easily rotate the Main Motor and do all of the
gears on the Main Drive Assembly rotate freely and
without binding?
Go to step 8 Go to step 2
Step Actions and Questions Yes No
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