Question about IBM Infoprint 1572 Laser Printer
Open thermistor check
failure. Fuser page
count between 0 and
• Noisy thermistor signal.
• Intermittent connection.
• Thermistor cable not connected or
thermistor actually open.
Go to “924.xx—Hot fuser
service check” on page 2-91.
Error Code 923.xx, 924.xx, and 925.xx may display for a hot fuser failure.
CAUTION: .The fuser may be hot, use caution before removing or servicing.
CAUTION: There is a danger from hazardous voltage in the area of the printer where you are
working. Unplug the printer before you begin, or use caution if the printer must receive power in
order to perform the task.
Service tip: Set the Fuser Temperature to NORMAL before starting this service check. In Diagnostics mode, In
Diagnostics mode, select EP SETUP, and Fuser Temp.
1 Fuser assembly
Fuser to system board
Check the thermistor cable for correct installation to J5 on the fuser
card. If installed correctly, check for correct installation of J10 on the
system board. If all cables are installed correctly, go to step 2.
2 Fuser top cover assembly
Turn the printer off and disconnect the thermistor cable from J5 on
the fuser board. Measure the resistance between the two pins on the
thermistor cable, if the resistance measures infinity (open circuit),
replace the fuser top cover assembly.
3 Fuser to system board
Reconnect the thermistor cable to J5 on the fuser board. Disconnect
the fuser to system board cable from J10 on the system board and
measure the resistance between J10-3 and J10-4 on the cable. If the
resistance measures infinity (open circuit) check the continuity of
pins 3 and 4 of the cable. If correct, replace the fuser assembly. See
“Fuser assembly removal” on page 4-26. If incorrect, replace the
fuser to system board cable.
Note: If the error code still displays, replace the system board. See
“System board and inner shield removal” on page 4-76.
Most likely just replace the fuser (part of usage kit)
Enter Diagnostic mode:
1. Press and hold (Down Arrow) and (Up Arrow).
2. Turn on the printer.
3. Release the buttons when Performing Self Test displays.
Posted on Apr 05, 2010
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Posted on Jan 02, 2017
SOURCE: I have an error message
Service Fuser Error appears when the fuser does not warm to the required temperature. For this error on this Lexmark model T632, the manual states you should power off the printer and power it back on, and if it is not plugged into a wall power point, change it to a power point mounted directly on the wall. Personally, I never got a Lexmark printer to work doing this, but this is in the manual. If this won't help, and the printer is under warranty, you should log it in with the servicing company.
If the printer is out of warranty, your next option is to change the fuser yourself which costs around $350, so I think you would be better off getting a new printer unless you find a second hand fuser on Ebay.
Posted on Feb 11, 2011
SOURCE: LEXMARK T620 FUSER ERROR 924
A 924.xx error message indicates that an "open circuit" has been detected in the fuser unit.
What to do
1st, the fuser unit ( this is the most likely of the three )
2nd, the system board
3rd, the low voltage power supply unit.
These parts will need to be inspected by a service technician and replaced as necessary.
IMPORTANT! If this is an intermittent error, you may want to check how the printer is plugged into the wall. Make sure it is plugged straight into the wall and not through a surge device or power strip. Power strips and uninterrupted power supplies can cause a low amperage problem in the printer which can trigger a false fuser error. This is true even if the printer has worked on this surge device previously.
Posted on Sep 28, 2008
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