Action Yes No
Step 20
a Turn o the printer.
b Replace the components that caused the error.
c Turn on the printer.
Does the problem remain?
Go to step 21. The problem is
solved.
Step 21
Replace the controller board. See
“Controller board removals” on
page 247.
Does the problem remain?
Contact the next
level of support.
The problem is
solved.
912 errors
912 error messages
Error code Description Action
912.xx Unrecoverable Engine firmware error
POR the machine. If the error re‑occurs, then
update the firmware. If the error continues
occurring, then check the controller board.
Go to
“Controller board service check” on
page 165.
94y errors
94y error messages
Error code Description Action
940.xx RIP to engine communication failure—the zero
crossing signal used for fuser control in the low
voltage (LV) power supply has failed, or the wrong
low voltage power supply has been installed.
Go to
“LVPS service check” on page 140.
948.xx Failed engine card—pel clock check failed.
Replace the controller board.
Go to
“Controller board removals” on
page 247.
949.xx Failed engine card—delay line calibration failure.
Replace the controller board.
4514-6xx
Diagnostics and troubleshooting
152
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