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MERLIN LEGEND Communications System Release 6.1
Installation
555-661-140
Issue 1
August 1998
Upgrading the System
Page 9-10
Upgrading the Control Unit
! Replace the processor module. See Figure 9-3 on page 9-11. Then
go to Step 7.
NOTE:
If the processor module is to be modified for Key mode, perform Step 4
through Step 10 of “Modifying the Processor for Key Mode” before
proceeding.
a. Press up on the tab at the bottom rear of the old processor
module.
b. While the tab is unlocked, pull the processor module towards you,
then lift it straight up.
c. Install a Release 4.0 processor module. See “Installing the
Processor” in Chapter 2.
d. Power up the system.
!Upgrade the processor module to Release 4.0 (when upgrading
from Release 3.0 or 3.1).
NOTE:
If the processor module is to be modified for Key mode, see “Modifying the
Processor for Key Mode” later in this chapter.
a. Insert an Upgrade memory card into the PCMCIA interface slot on
the processor module.
b. Perform the software installation.
Menu:
0DLQWHQDQFH→6\VWHP→8SJUG,QVWOO→<HV
See “Forced Installation/Upgrade of System Software” in
Maintenance and
Troubleshooting
for more details on this procedure.
!Program the system.
■ If the current system programming is to be used in the upgraded
system, see “Completing the Upgrade” later in this chapter.
■ If the system is to be re-programmed, see the System Planning
Forms and
System Programming.
!Test the system.
See Chapter 7, “Initializing and Testing the System.”