Question about Sharp AR-M237 Copier
I have this service code - H4-01 on my Sharp AR 337. Can you tell me how to clear it?
H2-01 Fusing Temp. to low
Use DIAG (SIM5-2) to checkthe heater lamp
If the heater lamp blinksnormally:
Check the thermistor and its harness.
Check thethermistor input circuit in the
If the heater lampdoes not light:
Check for heater lamp disconnection and
Check the interlock switch.
Check the AC PWB andthe lamp control
circuit in the control PWB.
Use DIAG (SIM14) to cancel the trouble.
H2-0 Fusing unit temperature error
H4-0 The fusing unit doesn't heat up.
***ALWAYS DISCONNECT POWER WHEN WORKINGON MACHINE***
You have to reset fuser errors with simulation 14.Push P * C * then 14 then Start (the button you use to make copies)and it should reset the code. If not then replace the fuser.
SM5-1 should turn the lamp on. If lamp blinks on and off it is thethermistor, if it does not it is the lamp, but check the contacts onthe lamp/fuser -- they have been known to erode.
Also check thermal fuse, if defectivereplace.
Posted on Jan 28, 2009
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Posted on Jan 02, 2017
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