Motus M990T, Руководство по обслуживанию

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3.3 How to Replace the MPU Board in Model M990T and M995T
Do the steps below while referring to the following Exploded Views in Appendix and Section
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ELECTRONIC PCB, CONNECTOR AND CABLE OVERVIEW.
D.1 OVERLAY BEZEL ASSEMBLY
E.1 CONSOLE ASSEMBLY
1) Turn off the unit power at the switch and then unplug the line cord at wall outlet.
2) Remove eleven screws (B23) from the Console Bottom (C2).
3) Lift off the Console Bottom from the Console Case (C1) while disconnecting the Download
Cable (C41) from the MPU PCB (D4).
4) From the underside of the Console Case (C1), remove three screws (B26) securing the
Overlay Bezel Assembly (DOT TYPE) to the Console Case.
5) Remove green Earth Cables (J3) connected between MPU PCB (D4) and Handle Frame
(C3) by removing two screws (B21) from Handle Frame.
6) Disconnect all of electrical connectors from the MPU PCB (D4).
7) Lift out the Overlay Bezel Assembly (DOT TYPE) from the front of Console Case (C1) and
then put it down on the flat and clean surface so that the Display faces downward.
8) Disconnect the Logo Backlight Cable (CB9) from the MPU Board (D4).
9) Disconnect the Key Conversion Cable (CB6) from the MPU Board (D4).
10) Disconnect the Ribbon Cable (D2) from the connector CN13 of MPU Board (D4).
11) Remove nine screws (B33) securing MPU Board to the Overlay Bezel (DOT TYPE) and then
remove MPU Board from the Overlay Bezel.
12) Install new MPU Board (D4) in reverse order. Make sure that all connectors and the Ribbon
Cable are securely fastened.