43
3.4 How to Replace the Touch Sensitive Key Board
Do the steps below while referring to the following Exploded Views in Appendix and Section
4
ELECTRONIC PCB, CONNECTOR AND CABLE OVERVIEW.
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.
4) Disconnect the Touch Sensitive Key Cable (CB3L) from the left Touch Sensitive Key Board
(C14).
For the right Touch Sensitive Key Board (C15), disconnect the Cable (CB3R).
5) Remove eight screws (B35) and then remove the Touch Sensitive Key Board (C14 or C15)
from the Console Case (C1).
6) Install new the Touch Sensitive Key Board (C14 or C15) in reverse order.
Summary of Contents for M990T
Page 56: ...55 4 1 Cable Connection Block Diagram 1 MPU PCB LCD Type ...
Page 57: ...56 2 MPU PCB DOT Type ...
Page 58: ...57 3 A D BOARD ...
Page 59: ...58 4 Lift Power BOARD 4 1 Supply Voltage 220 230VAC ...
Page 60: ...59 4 2 Supply Voltage 100 120VAC USA Japan ...
Page 87: ...86 A 1 M990T ...
Page 90: ...89 B 1 MAIN BODY_FRONT A ...
Page 91: ...90 B 2 MAIN BODY_FRONT B ...
Page 93: ...92 C 1 MAIN BODY_REAR ...
Page 95: ...94 D 1 OVERLAY BEZEL ASSEMBLY ...
Page 98: ...97 E 1 CONSOLE ASSEMBLY ...
Page 101: ...100 F 1 BOLT A ...
Page 102: ...101 F 2 BOLT B ...
Page 103: ...102 F 3 BOLT C ...
Page 104: ...103 F 4 WASHER NUT ...