Sharp MX4100n C4-02 error

[copydocinc]

Ok so My customer has a Sharp MX4100n with the C4-02 error code
I have replaced the PTU with a new OEM unit
still have C4-02
I have read that the next thing to do is replace the PCU PWB and/or check wire connections
Hytec tech support is saying that the HVU is also possible.

Any real experience out there with this error code not clearing after replacing the PTU?

[JLSam]

Have you reset the counters and the error code already?

Sent from my ONEPLUS A5000 using Tapatalk

[copydocinc]

You can't really reset this error code. Replacing the PTU unit usually get rid of the code.
You can temporarily bypass it with sim 55-01 changing soft switch 8 to 1 until the PTU is replaced
I do not see anywhere to reset the PTU counter.
So, I guess my answer is no I haven't
Any further info on this?

[spanky]

See attached