TallyGenicom 6600 Series, Maintenance Manual

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Chapter 4
Reprogramming the Security Key
Reprogramming the Security Key
The security key on the PSA3 controller board can be reprogrammed with a
Software Program Exchange (SPX) module. This allows the user or a service
technician to enable features such as new emulations without having to
remove covers and install a new security key on the controller board.
The SPX is an intelligent module that plugs into the debug port on the back of
printers equipped with the PSA3 controller board. The SPX is used only once.
It automatically overwrites itself after successfully reprogramming a security
key.
The SPX is used at power-up only and is not left in the printer during normal
operation. Because it is a single-use disposable item the user is not required
to return it to the vendor or manufacturer.
How to Reprogram the Security Key
1. Power off the printer.
2. On cabinet models, open the rear door. On pedestal models, use the
illustration below to locate the debug port at the rear of the printer.
3. Insert the SPX into the debug port, in as shown in Figure 15 on page 176.
Figure 15. Inserting the SPX into the Debug Port
183482b
183481b
A
A
Debug Port
SPX