121 Errors - Lexmark MX610 Service Manual

LSU service check
Action
Step 1
Check the LSU cables JLSU1 and J6 for proper connection.
Are they properly connected?
Step 2
Inspect the LSU cables and connectors.
Are they free of damage?

121 errors

121 error messages
Error code Description
121.07 Fuser has been on for more than allowed after a gap
blowout, and the temperature is still too cold.
121.08 Fuser was under temp when page was in fuser.
121.20 Fuser undertemp during steady state control. Can
occur in printing or standby modes.
121.22 Fuser did not warm enough to start line voltage
detection.
121.23 Fuser took too long to heat to line detection temp.
121.24 Fuser never reached detection temperature.
121.25 After line voltage detection, control did not roll over
to steady state control in time.
121.26 Failed to reach temperature during warm up.
121.28 Failed to reach EP warm up temperature in time.
121.29 Fuser failed to reach pre‑heat temperature for motor
start during warm up.
Yes
Go to step 2.
Replace the controller
board. See
board removal" on
page
Action
Go to "Fuser service check" on page
Diagnostic information
119
No
Reseat the cables.
Replace the LSU. See
"Controller "Laser scanning unit
(LSU) removal" on
257. page 328.
120.
7016