Motus M990T, Service Manual

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3.9 How to Replace the Logo-Lighting & Key Conversion Board in Model
M990T and M995T
Do the steps below while referring to the following Exploded Views in Appendix and Section
4
ELECTRONIC PCB, CONNECTOR AND CABLE OVERVIEW.
D.1 OVERLAY BEZEL ASSEMBLY (DOT TYPE)
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 the 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.
Logo-Lighting Board
8) Disconnect the Logo Backlight Cable (CB9) from the MPU Board (D4).
9) Remove two screws (B33) securing the Logo Backlight Board (D5) and lift off the Logo
Backlight Board (D5) from the Overlay Bezel (D3).
10) Install new Logo Backlight Board (D5) in reverse order.
Key Conversion Board
8) Disconnect the Key Conversion Cable (CB6) from the MPU Board (D4).
9) Remove two screws (B35) securing the Key Conversion Board (D6) and lift off the Key
Conversion Board (D6) from the Overlay Bezel (D3).
10) Install new Key Conversion Board (D6) in reverse order.