Lexmark C720 Service Manual page 84

5024-001
Error Code
92X
Fuser Exhausted
930/933
Printhead Error
934
Printhead Power
Error
939
RIP to Engine
Communication Error
943
RIP Code and Fonts
Error
945/946
Main Engine (MCTL
P.W.B.) Board
2-4
Service Manual
Action
The fuser is in a maintenance state and needs to be
replaced before any other action can be taken.
Have the customer order a new fuser maintenance
kit.
Replace the fuser and note whether any error code
exists.
Ensure the printhead connector, LCN1, is properly
connected to LCN on the main engine (MCTL
P.W.B.) board.
If the problem still exists, replace the optical
printhead unit.
If this does not correct the problem, replace the main
engine (MCTL P.W.B.) board.
Ensure the printhead connector, LCN1, is properly
connected to LCN on the main engine (MCTL
P.W.B.) board.
If the problem still exists, replace the low voltage
power supply (LVPS).
Indicates that the RIP controller board and the main
engine (MCTL P.W.B.) board cannot communicate.
The RIP board, main engine (MCTL P.W.B.) board or
cabling may be defective. Check each board for
correct installation and be sure all grounds are
secure. If no problem exists, replace the following
FRUs in the order shown:
• Main engine (MCTL P.W.B.) board
• RIP controller board
Indicates that the font ROM and RIP codes are
incompatible.
Ensure the code is correct.
Turn the power Off and then back On.
If the error still exists, replace the main engine
(MCTL P.W.B.) board.