Error Code - Lexmark C752 Service Manual

5060-2XX

940 error code

Cyan toner metering cycle (TMC)
The TMC is where the code and electronics in the printer sense an addition of toner in the cartridge developing
area. If the printer is expecting a toner addition cycle but one is not detected, a 94x TMC Error is displayed.
Replacement of the cartridge may fix the problem temporarily if the problem is with the printer. Only replace the
cartridge if there are no problems with the printer or if the cartridge is known to be defective.
Note: Before proceeding with this service check, observe the error log for repetitive occurrences of a 94x
service error.
Step Actions and questions
1 Check the toner metering cam (A) on the rear of the
cyan cartridge.
Note: In some cartridges the toner metering cam is
black.
Is the cam present on the cartridge?
2 Check the TMC pin (B) in the cyan cartridge contact
assembly to make sure it moves freely.
Does the pin move freely?
2-86
Service Manual
A
B
Yes No
Go to step 2 If the toner
metering cam is
not present,
check the printer
to make sure it is
not inside.
Replace the
damaged
cartridge.
Go to step 3 Replace the
"Cartridge
contact
assembly" on
page 4-28.