Communication abnormality between the overall control board
(OACB) and the scanner drive board (SDB). When the power switch (SW2) turns on, there is no SDB response.
Check the connection between these two boards or one is bad! Have tech check it out
Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/normanj_7893313f0751935f
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