Chapter 6 – Maintenance
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13841 Rev A
234
1. Observe the antistatic procedures explained under
Section 6.3.2 “EPROM Replacement”.
2. Make sure the unit is turned off.
3. Remove the battery end plate (15) by turning the large
Phillips screw (16) counter-clockwise with the Phillips
screwdriver.
4. Remove the batteries (20).
5. Remove the four 4-40 screws (03) from the shield (02)
with a Phillips-head screwdriver.
6. Reach in with two fingers and disconnect the ribbon
cable (for the keyboard) from the main PCB (14). Be
careful not to damage or kink the connector ribbons.
7. Remove the four 4-40 screws (03) from the connector
end plate (04).
8. Remove the main PCB from the chassis by pulling on
the connector end plate slowly. Pay special attention to
feeding the shield (02) through the chassis (01), since it
is attached to the main PCB (18).
Alternately, the user can detach the shield from the main
PCB by removing the 4-40 nut (22).
6.3.7.3
Assembly
Reassemble the Vibrex unit, as follows:
1. Observe the antistatic procedures explained under
Section 6.3.2 “EPROM Replacement”.
2. Partially loosen the two screw locks (21) on the nine-pin
connector. These parts hold the main PCB (14) to the
connector end plate (04). Loosening these parts allows
the main PCB to “float” as it is inserted into the chassis
(01).
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