Procedure 21 - Removing And Replacing Line Voltage Switch - Control Data Corporation CDC CC63X Hardware Maintenance Manual

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1. Remove power from terminal (procedure 1).
2. Remove keycap by prying it up, or use keycaps removal
tool, part number 71493510.
3. Lift spring out of switch housing.
4. Pry switch housing loose from keyboard by pressing detent
on each side of switch housing. It may be necessary to
remove keycaps and springs from adjacent switch modules
to provide sufficient clearance. Also note that PC board
of keyboard assembly has retaining screws attached to
some switch modules, which are indicated by shaded keys
in figure 6B-2l. If any of these switches are to be
replaced, or if detents are not accessible from top,
replace the complete keyboard.
5. Install replacement switch module in the reverse order of
preceding steps. Replacement switch module will have a
blank keycap. Discard blank keycap and use existing one.
Procedure 21 - Removing and Replacing Line Voltage Switch
Remove line voltage switch as follows:
1. Remove the logic drawer assembly (procedure 4, steps 1
through 5).
2. Disconnect the yellow wires noting the position of each
wire (see figure 5-1).
3. Remove the screw on the left of the switch.
4. Remove the metal backpanel from the logic drawer assembly
and remove the switch.
5. Install a replacement line volt'age switch in place (when
positioning the switch, 115 V should be on the left as
viewed from the rear) and reassemble the remaining parts
in the reverse order of disassembly. (Make sure switch
is set to proper voltage setting prior to installing the
screw on the left of the switch.)
62940034 E
NOTE
The wires are marked as to switch
position they connect to (refer to
figure 6B-12).
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