Remove The Machine Control Pcb; Remove The Control Panel Overlay; Remove The Display Pcb - Integra Cusa Excel Service Manual

Control Head Components
11-18

Remove the Machine Control PCB

Notice
Electrostatic Sensitive Devices This unit contains electrostatic sensitive components.
When repairing the system, work at a static control workstation. Wear a grounding strap
when handling electrostatic sensitive components. Handle circuit boards by their
nonconductive edges. Use an antistatic container for transport of electrostatic sensitive
components and circuit boards.
Attach an ESD wrist strap, then disconnect the 50-pin ribbon cable from the
1.
Machine Control PCB (J1). Refer to Figure 11-9.
Remove five screws (M4 Phillips) from the Machine Control PCB.
2.
Remove the Machine Control PCB from the control panel assembly.
3.

Remove the Control Panel Overlay

Four snap-in standoffs fasten the overlay to the control panel assembly.
To gain access to the standoffs within the control panel assembly, remove the
1.
Machine Control PCB.
With your fingertips, squeeze the spring-loaded flanges on the standoffs to
2.
retract them.
With the flanges retracted, push the standoffs out of the control panel
3.
assembly to release the overlay.

Remove the Display PCB

Remove the control panel overlay.
1.
Remove four screws and four lock washers (M4 Phillips) from the display
2.
PCB chassis.
Tilt the display PCB and chassis backward at the top. Lift the display PCB and
3.
chassis from the control panel bezel, being careful to make sure the silicon
buttons clear the bezel.
Remove the display PCB from the chassis (refer to Figure 11-11):
4.
Remove eight screws (M4 Phillips) from the display PCB.
a.
Lift the display PCB from the chassis.
b.
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