H 4 code flashing

The H4 code indicates the fuser may have blown the thermistor. It also could be a false error code. Try this series to clear the error and if it returns, then you'll know for sure the fuser is the culprit. To reset press the following buttons:

1. Press this sequence: CLR-Exposure-CLR-Exposure
2. The display will go blank
3. enter "14", press "PRNT"
4. Press "CLR" several times to exit.

I think, you must call to service. It s may be need some ajesments and instruction.



Sharp AL-1631 H 4 code that keeps flashing


E7 03 Scanner position error 04 Exposure lamp blown 05 CCD calibration error 12 White level calibration error 14 Main board malfunction 15 Exposure lamp blown L1 00 Scanner position error L3 00 Scanner position error L4 01 Main motor drive overloaded L6 10 Polygon mirror motor not up to speed H2 00 Fusing unit temperature error H3 00 Overheated fusing unit H4 00 The fusing unit doesn't heat up U2 01 Counter error 04 EPROM error CH blinking Dev unit is not properly installed

In most cases this is a false code. Just look for my tip on this H4 code reset procedure and you may just save yourself a service call. Just search for Sharp AL series H4
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