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5.3.5.
10 Type 8 Spacebar
Perform the removals described in paragraphs 5.3.5.1
through 5.3.5.3 for access to the keyboard assembly.
A. Spacebar Removal:
1. Grasp spacebar button at each extreme end (outboard
of the modules) and remove by applying even upward
force.
2. Pivots can be removed (if required) by prying with
the tip of a screwdriver placed in the molded slot in
the side of the pivot (Diagram 5-14).
I
Diagram 5·14. Spacebar Pivot Removal (Type B)
B.
Spacebar Replacement:
1. Snap any pivots removed in step 2 (above) into
mounting frame.
2. Place spacebar button over its respective modules,
and lower it into position while engaging the
stabilizer bar in the two pivots.
3. Apply downward pressure on spacebar at the points
directly over spacebar modules to seat the spacebar
button.
4. Check spacebar operation for binds. If binds are
present, the most common problem is a slightly bent
right module stem. This stem can be straightened to
eliminate the bind.
5. Replace keyboard top cover, and reconnect keyboard
to display station.
5.3.5.11 Circuit Board and Electronics Assembly - Type B
Keyboards Only
The circuit board and electronics assembly is a field-
replaceable unit on Type B keyboards. To remove or
replace the circuit board and electronics assembly, proceed
as follows:
5-20
1. Clean the work area and prepare the keyboard. (Use
steps 1-3 of paragraph 5.3.5.9.)
2. Disassemble keyboard. (Use steps 3-6 of paragraph
5.3.5.9A.)
3. Reassemble keyboard. (Use steps 2-9 of paragraph
5.3.5.9B.)
5.3.6 Audible Alarm (Optional Feature)
The audible alarm device circuitry is packaged in a small
metal box mounted on the base chassis beneath the CRT,
inside the front cover. The audible alarm box is mounted
vertically on Model 1 display stations and horizontally on
Model 2 display stations.
1. Remove front cover.
2. Remove audible alarm box from chassis. Box can be
removed from snap fasteners by rocking metal box while
pulling away from chassis.
3. Remove circuit board from the metal box.
4. Remove cable wires from audible alarm circuit board
with long-nosed pliers or small blade screwdriver.
5. Replace in reverse order. Circuit board is etched with
color code of wires to be replaced.
5.3.7 Security Keylock (Optional Feature)
5.3.7. 1 Model 1
1. Remove screws that hold keylock assembly to frame.
2. Release cable clamps that route switch assembly cable to
logic board.
3. Remove cable leads from connector at socket A 1 Z3.
Note positions from which wires are removed (for later
reconnection) .
4.
Lift
switch cable assembly free of machine.
5. Reassemble in reverse order. Make sure that leads
removed in step 3 are replaced in proper connector
positions and that keylock assembly is aligned with hole
in right side cover.
5.3.7.2 Model2
1. Remove screws that hold keylock assembly to frame.
2. Remove keylock assembly cover.
3. Remove cable leads from switch with pliers or small
screwdriver. Note terminals from which leads are
removed (for later connection).
4. Remove cable strain relief from hole in switch assembly.
5. Remove cable from keylock assembly.
6. Reassemble in reverse order. Make sure to align keylock
assembly with hole in right side cover.
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