Procedure 6 - Removing And Replacing The Brightness/Contrast Control Assembly - Control Data Corporation CDC CC63X Hardware Maintenance Manual

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8. To reinstall, after removing the plastic bag (taped to
the bezel adapter assembly) containing the replacement
screws fit the bezel adapter assembly in place. Install
the two top screws (using the replacement screws) that
secure the bezel assembly to the hood, but do not
compress the washers.
9. Lift terminal up and place it on its pedestal.
10. Insert the power actuator bar from the rear of· the
terminal into the bezel adapter guide hole. position the
bar as observed in step 1.
11. Place the return spring (removed in step 7) in the guide
hole in the rear flange
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the hood. Then slide bar into
the guide hole. Once the bar is in guide hole, keep
pressure on bar to ensure that spring does not fly free
and proceed to step 13.
12. While holding back the actuator bar,. replace the POWER
swi tch rocker.
13. Replace the touchpanel (procedure 19).
14. If the drawer track is not in place, slide it toward the
front of the terminal until it clears the back lip of the
hood, and push it down. Then snap the drawer track in
place by pulling it toward the rear.
15. Replace the remaining two screws in the bezel adapter
assembly and tighten two top screws. Replace the bezel
assembly on the terminal.
16. Replace the BRIGHTNESS and CONTRAST knobs. Replace the
ground wire from monitor shield to stud.
17. Replace the logic drawer assembly (procedure 4, steps 6
through 13).
18. Perform video alignment procedure (procedure 16).
Procedure 6 - Removing and Replacing the BRIGHTNESS/CONTRAST
Control Assembly,
Remove and replace the BRIGHTNESS/CONTRAST control assembly as
follows •
1. Remove the CRT/bezel adapter assembly (procedure 5, steps
1 through 6).
2. Loosen the three screws securing the monitor shield
(figure 6B-8) and slide the monitor shield off.
3. Disconnect ribbon cable comming from BRIGHTNESS/CONTRAST
control assembly at the CRT monitor board assembly.
6B-12
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