Lexmark C540 Service Manual page 53

Service error messages (1xx, 9xx) (continued)
Error code Description
929.xx Service The printer doesn't register a transition
Toner Sensor on the toner sensor for a set period of
time. Either the printer's toner sensor is
faulty or its print cartridge is defective.
930.xx Service The LVPS did not detect zero crossing.
LVPS Error
931.xx Service There is no first HSYNC.
Printhead Error
932.xx Service The HSYNCs are lost.
Printhead Error
933.xx Service Mirror motor is locked. No HSYNC
Printhead Error received.
935.xx Service Mirror motor is unable to reach
Printhead Error operating speed.
936.xx Service The transport motor had an initial lock
Transport Motor failure.
937.xx Service The transport motor lost lock.
Transport Motor
940.xx Service A RIP to engine communication failure.
LV Power Supply The zero crossing signal used for fuser
control in the low-voltage (LV) power
supply has failed, or the wrong low-
voltage power supply has been
installed.
940.0x Service The cyan cartridge toner meter cycle
Cyan TMC Sensor (TMC) switch error.
941.0x Service The magenta cartridge toner meter
Magenta TMC cycle (TMC) switch error.
Sensor
942.0x Service The yellow cartridge toner meter cycle
Yellow TMC Sensor (TMC) switch error.
943.0x Service The black cartridge toner meter cycle
Black TMC Sensor (TMC) switch error.
948.xx Service The pel clock check failed.
Engine Card
949.xx Service Delay line calibration failure
Engine Card
Action
The Servicer should follow these steps to
resolve this problem:
• Use the base sensor test in
Diagnostics Menu to inspect the toner
sensor's operation.
• If the toner sensor is operating
correctly, then the problem is the print
cartridge.
Go to "930.xx–935.xx—Printhead errors
service check" on page 2-25.
Go to "930.xx–935.xx—Printhead errors
service check" on page 2-25.
Go to "930.xx–935.xx—Printhead errors
service check" on page 2-25.
Go to "930.xx–935.xx—Printhead errors
service check" on page 2-25.
Go to "936.xx, 937.xx—Transport motor
service check" on page 2-26.
Go to "936.xx, 937.xx—Transport motor
service check" on page 2-26.
Replace the low-voltage power supply.
See "Low-voltage power supply (LVPS)
assembly removal" on page
Go to "Toner meter sensors (Y, C, M, K)
on TMC card" on page 2-52.
Go to "Toner meter sensors (Y, C, M, K)
on TMC card" on page 2-52.
Go to "Toner meter sensors (Y, C, M, K)
on TMC card" on page 2-52.
Go "Toner meter sensors (Y, C, M, K) on
TMC card" on page 2-52.
If this error message persists, replace the
controller board. See "Controller board
removal" on page 4-19.
If this error message persists, replace the
controller board. See "Controller board
removal" on page 4-19.
Diagnostic information
5025-2xx, 4xx
4-37.
2-19