Lexmark X500n Service Manual page 43

Error code
H4 Service Call
Fuser Unit
HA Service Call
Fuser Unit
L1 Service Call
Laser Unit Assembly
L2 Service Call
Laser Unit Assembly
LL Service Call
Laser Unit Assembly
N3 Service Call
HVPS Connection
N4 Service Call
Toner Empty Sensor
N5 Service Call
Toner Empty Rcv
N6 Service Call
LFU Connection
P6 Service Call
Pfeed Clutch Tray 2
Action
Fusing temperature rises above limit during printing process and does not return
within the alloted time period.
See "Fuser assembly service check" on page
AC relay turned off due to an abnormal temperature.
See "Fuser assembly service check" on page
Laser scanning beam is not detected by beam sensor.
See "Laser unit assembly service check" on page
Scanner motor (SM) is rotating abnormally.
See "Laser unit assembly service check" on page
Laser power is lower than the output limit.
See "Laser unit assembly service check" on page
Improper connection between engine controller board and HVPS.
See "HVPS connection service check" on page
Improper connection between engine controller board and toner sensor sender
board.
See "Toner empty sensor (sender-TPD) service check" on page
Improper connection between engine controller board and toner sensor receiver
board.
See "Toner empty sensor (receiver-TTR) service check" on page
Improper connection between engine controller board and lower paper feed unit.
See "Lower feed unit (secondary paper assembly) service check" on
page 2-28.
Data communication error between engine controller board and LFU paper-feed
clutch.
See "Lower feed unit (secondary paper assembly) service check" on
page 2-28.
7100-XXX
2-24.
2-24.
2-25.
2-25.
2-25.
2-25.
2-26.
2-27.
Diagnostic information
2-5