Equipment
Maintenance
and
Repair
© Diebold Election Systems, Inc. 2002 AccuVote-OS Hardware Guide
47
6. Reinstall the AccuVote-OS cover using the procedure previously described in
Replacing the
cover
.
10.5. Removing the CPU board
Ensure that all external cables are disconnected from the unit and the unit is powered off before
removing the CPU board Also, ensure that no memory cards are installed into the CPU board.
1. Remove the unit cover using the procedure previously described in
Removing the cover
and
position it face down on the work surface, behind the AccuVote-OS base.
2. Remove the paper from the printer feeding mechanism by turning the printer thumb wheel
counterclockwise.
3. The following cables are connected to the top of the CPU board, in left-to-right order:
•
static discharge strap
•
four-wire power supply cable
•
three-wire deflector connector cable
•
main serial port cable
•
modem serial port cable
•
two-wire modem power cable
•
ballot reader serial cable
•
static discharge strap
Note that it is not necessary to remove the ribbon cables connecting the LCD and the printer
assembly to the CPU board.
4. Grip the four-wire power supply connector next to the printer assembly and remove from the
CPU board.
5. Grip the three-wire deflector connector cable connector to the right hand side of the four-wire
power supply cable and remove from the CPU board.
6. Place two fingers on both lock eject levers on either side of the main serial port connector
and push outwards in order to release the connector from the header located on the CPU
board. The main serial port connector is located to the right hand side of the three-wire
deflector connector cable.
7. Place two fingers on both lock eject levers on either side of the modem serial port connector
and push outwards in order to release the connector from the header located on the CPU
board. The modem serial port connector is located to the right hand side of the main serial
port header.
The modem serial cable need only be removed if a modem is installed in the AccuVote-OS.
8. Grip the two-wire modem power connector located between the modem serial cable and the
ballot reader connector and remove from the CPU board. The two-wire modem power cable
need be removed only if a modem is installed in the AccuVote-OS.
9. Place two fingers on both lock eject levers on either side of the ballot reader serial cable
connector and push outwards in order to release the connector from the header on the CPU
board. The ballot reader serial connector is located in the right hand corner of the CPU
board.
10. There are two static ground connectors located on the CPU board. One is located between
the printer assembly and the four-wire power supply connector and the other is located on the
