Lexmark C 746 Service Manual

Diagnostic information2-35
 5026
Go Back Previous
Next
245.02 Tray 5 pass thru sensor made at 
POR.
Possible causes:
• Paper jam leaving a page over the 
sensor
• Defective pass thru sensor• Check for anything in the paper path that might 
cause the media to jam.
• If the problem persists, go to “245.17—Paper 
Jam service check” on page 2-92.
245.03 Pick timeout from tray 5 exceeded 
without a tray sensor break.
Possible causes:
• Tray 5 incorrect media setting
• Tray 5 incorrect paper loaded
• Tray 5...

2-36Service Manual 5026 
Go Back Previous
Next
245.21 Tray 5 motor stalled.
Possible causes:
• Incorrect paper loading
• Paper pick mechanism failure
• Printer option cable connector 
damaged
• Input option damaged
• System board failure1. Remove all media present in the paper path.
2. Ensure proper media is set for the type of paper 
used.
3. Fan media, and stack it flat in the tray or 
multipurpose feeder.
If the previous actions do not fix the problem, go to 
“242.21, 243.21, 244.21. 245.21, 242.30,...

Diagnostic information2-37
 5026
Go Back Previous
Next
250.21 Multipurpose feeder motor stalled.
Possible causes:
• Multipurpose feeder motor failure
• Cabling failure
• Multipurpose feeder gear 
assembly failure
• System board failure
• Defective media present sensor1. Remove all the media present in the paper path.
2. Ensure proper media is set for the type of paper 
used.
3. Fan media, and stack it flat in the tray or 
multipurpose feeder.
4. Properly set media restraints in the multipurpose 
feeder....

2-38Service Manual 5026 
Go Back Previous
Next
9xx service error messages
900.00–900.99
Software Error 
(except 900.05)Unrecoverable RIP software error.  Go to “900.00–900.99 (except 900.05)—System 
software error service check” on page 2-93. 
900.05 
Software Error.Transfer module has failed • POR the printer.
• If the error message persists, go to “900.05—
Transfer module error service check” on 
page 2-96. 
902.01–902.99 
Engine Software Error
(except 902.59 and 
902.60)Unrecoverable system software...

Diagnostic information2-39
 5026
Go Back Previous
Next
920.04 
POST ErrorFuser motor not connected. • POR the printer.
• If the error message persists, go to “920.04—
POST (power-on self test) fuser motor not 
connected error service check” on 
page 2-97.
920.05 
POST ErrorPrinthead motor not connected. • POR the printer.
• If the error message persists, go to “920.05—
POST (power-on self test) printhead motor 
not connected error service check” on 
page 2-98.
920.06 
POST ErrorInput sensor not...

2-40Service Manual 5026 
Go Back Previous
Next
920.16 
POST ErrorBad printhead NVRAM data. • POR the printer.
• If the error message persists, go to “920.16—
POST (power-on self test)—Bad printhead 
NVRAM data error service check” on 
page 2-108.
920.17 
POST ErrorOutput bin cable not connected. • POR the printer.
• If the error message persists, go to “920.17—
POST (power-on self test)—Output bin cable 
not connected error service check” on 
page 2-109.
920.18 
POST ErrorCartridge motor 3 (bottom) is...

Diagnostic information2-41
 5026
Go Back Previous
Next
920.30
POST ErrorOption sensor disconnected. Use the following list to determine which service 
check to use:
•Tray 2—Go to “242.02—Paper Jam service 
check” on page 2-71.
•Tray 3—Go to “243.02—Paper Jam service 
check” on page 2-78.
•Tray 4—Go to “244.02—Paper Jam service 
check” on page 2-84.
•Tray 5—Go to “245.02—Paper Jam service 
check” on page 2-89.
920.31
POST ErrorOption hardware error (generic) Contact your next level of support.
920.32 MPF...

2-42Service Manual 5026 
Go Back Previous
Next
945.04 
Transfer RollBlack transfer roll has failed. • POR the printer. 
• If the error message persists, go to “945.xx, 
947.xx—Transfer roll error service check” on 
page 2-116.
947.01 
Transfer RollYellow transfer roll has failed. • POR the printer.
• If the error message persists, go to “945.xx, 
947.xx—Transfer roll error service check” on 
page 2-116.
947.02 
Transfer RollCyan transfer roll has failed. • POR the printer. 
• If the error message...

Diagnostic information2-43
 5026
Go Back Previous
Next
958.01–958.99 
Memory FailureProcessor failure. • POR the printer.
• If the error message persists, replace the 
system board. See “System board removal” 
on page 4-155. 
959.00–959.05
Engine Code ErrorInvalid engine code • POR the printer.
• If the error message persists, download the 
engine code again.
• POR the printer again.
• If the error message persists, replace the 
system board. See “System board removal” 
on page 4-155.
959.20–959.28...

2-44Service Manual 5026 
Go Back Previous
Next
982.00–982.12
 
Communications ErrorCommunications error by specified 
device.1. Turn the power off.
2. Remove, and reinstall the option.
3. Turn the main power back on.
4. Check all option interface connections if the 
problem remains.
983.00–983.99
 
Communications ErrorInvalid command parameter by 
specified device.• POR the printer.
• If the error message persists, replace the 
system board. See “System board removal” 
on page 4-155.
984.00–984.99...