Sharp,MX4501N, H4-02 error code even after replacing the fuser unit. Machine works after resetting the code but it keeps coming back. Any help will be appreciated!
Sharp,MX4501N, H4-02 error code
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Fusing section low temperature trouble (TH_US)
cause
The fusing temperature does not reach the specified
level within the specified time from turning ON the
power relay.
Thermister trouble.
Heater lamp trouble.
PCU PWB trouble
Thermostat trouble.
Connector, harness connection trouble.
Power unit trouble.
Interlock switch trouble.
check and remedy
Replace the thermister.
Replace the heater lamp.
Replace the PCU PWB.
Replace the thermostat.
Check connection of the connector and the harness.
Replace the power unit.
Replace the interlock switch.
Use SIM5-2 to check the flashing operation of the
heater lamp.
Use SIM14 to cancel the trouble. -
Did you happen to check to see if they had any A/C line problems? Have had H4 codes on other Sharps for this reason. Haven't had too many fuser problems with the MX3501/4501 series that a newer fuser didn't fix. Have you updated the ROMs?
Good luck.
BilComment
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Paul@justmanuals.comComment
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scout
Re: Sharp,MX4501N, H4-02 error code
Has anybody found a solution to this problem? I have a customer with this exact issue. I have moved the washers on the thermistors as suggested in a different forum with no luck. The code will reset using SIM 14 but continues to pop back up. Any ideas?Comment
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Re: Sharp,MX4501N, H4-02 error code
Good luckComment
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Re: Sharp,MX4501N, H4-02 error code
43fuser-temp.pdf
These should be default values for fuser temp 3501n from a working machine, might want to check sim 43 settingsComment
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