Error Code Service Check - Lexmark C77x Service Manual

5061
Step Actions and questions
3 Is 930 error still displayed?
940.xx error code service check
•
940.02—cyan toner metering cycle (TMC) problem
•
940.05—cyan toner metering timeout problem
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.xx 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.xx
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?
2-56
Service Manual
A
Yes No
Replace the Problem resolved
LVPS assembly.
See "LVPS
assembly
removal" on
page 4-53.
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.