937.00 Main transport motor lost lock Replace the main motor gear drive. See “Main
motor service check” on page 2-26
937.01 Main transport motor lost lock, detected by engine
control
937.02 Overspeed detected during position control
937.03 Overspeed detected during speed control
Power supply service errors
940.00 LVPS service error Replace the LVPS/HVPS. See “LVPS/HVPS
service check” on page 2-25.
940.01 Line frequency outside allowed range of 45Hz-64Hz
940.02 Line frequency below 43Hz
940.03 No zero cross detected on belt fuser model
Controller board and operator panel service errors
948.xx Failed engine board Replace the controller board. See “Controller
board service check” on page 2-22.
949.xx
950.xx Mismatch between EEPROM and mirror memory
Note: A new controller board or operator panel has been
installed, and has not been properly prepared for this
use. Install a new note. Do not install both the controller
board and the operator panel at the same time without a
POR in between.
Install a new controller bored or operator panel.
See “Controller board service check” on
page 2-22 or “Operator panel service check”
on page 2-27.
951.xx Error with secure NVRAM on the controller board Replace the controller board. See “Controller
board service check” on page 2-22.
952.xx A recoverable MVRAM Cyclic Redundancy Check error
occurred. Performing POR will clear this error.
953.xx NVRAM chip failure with mirror Replace the operator panel. See “Operator
panel service check” on page 2-27.
954.xx NVRAM chip failure with system part. Replace the controller board. See “Controller
board service check” on page 2-22.
955.xx The code ROM or NAND flash failed the Cyclic
Redundancy Check or the NAND experienced an
uncorrectible multi-bit failure.
956.00 RIP card failure: processor failure
956.01 Processor overtemp
957.xx RIP card failure: ASIC failure
958.xx Printer has performed more than 100 “shift and reflash”
operations as a result of ECC bit corrections
Firmware or controller board errors
959.01 Controller verification failure of pensive boot code Call the next level of support to update the
firmware, or replace the controller board. See
“Controller board service check” on
page 2-22.
959.02 Failure to authenticate Signature Verification Code
Error Description Action
2-18