[Error Code] L8-01 code

[fanasa]

has anyone had a L8-01 code on an AR-M350/450?
The tech replaced the AC/DC power supply and the PCU board according to the documentation.

[White_Toner]

What is the reason of your question? The problem stay after replacement?
manual says:
Cause:
The PCU PWB connector or the power unit
harness is disconnected or broken.
PCU PWB trouble
Power unit trouble

[Petekj7]

Sharp say replace harness between motherboard and pcu

[White_Toner]

OK! Sharp say: harness is disconnected or broken.
In my experience of many years static harness never was broken by itself. Disconnected? May be lose contact in Jack or plug, but very seldom.

[fanasa]

Thanks for all the replies.
All the suggestions by the book have been followed. Even repleaced harness.
Any other ideas?

[OMD-227]

Unstable power supply at the wall. PCU board receiving low or fluctuating power signal.