3, 4: Removing The Options Pc Board; Procedure - NCR 7194 Service Manual

3, 4: Removing the Options PC Board

Procedure

The Options PC Board can be replaced if it becomes defective, or
should there be a need to change the communication interface. The
Options Board can be accessed from the back of the printer by
removing the Connector Cover.
Tools: Pozidriv #1 screwdrivers
1. Open Rear Cover and remove the paper from the printer.
2. Disconnect all the cables from the printer.
Caution: Electrostatic Discharge could damage the Control or
Options PC boards. Wear a grounded wrist strap and use a static mat
or other ESD protected work surface when handling electronic
components.
3. Close the Rear Cover and turn printer with back facing you.
4. Remove the Connector Cover by unsnapping the hinges on each
side.
5. Unscrew the two screws holding the Options PC Board Mounting
Plate to the printer cabinet.
6. Pull the Options PC Board out toward you (this will disconnect the
Options PC Board from the Control PC Board).
Chapter 4: Servicing the Printer 4-9