MOVED TO TRUTH TABEL _Rotary switch encoder problem

mg73

Well-known member
Joined
Dec 9, 2005
Messages
131
Location
sweden
I have an MPC 3000 that had a bad rotary encoder(48 detents) or I thought was the problem
ordered a new one same problem.Seller claims it works perfect.

Tried a 24 detents encoder and it worked fine.

Could the circuit be defect and can't handle higher resolution encoder
and only encoder with less detents
and if where should I start to  look.

Now the encoder goes direct into NEC IC
with 5v on the left and right legs

attaching the schematic.


 

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  • MPC3000_SERVICE_MANUAL.pdf
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