AT&T Map/40, Manual

Page: 4 / 60

iv
Contents
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Removing the Card Cage Access Panel 2-4
■
Removing the Card Cage Retaining Bracket 2-6
■
Replacing the Card Cage Access Panel
and Dress Cover 2-8
3
Upgrading Circuit Cards
3-1
■
What’s in This Chapter 3-1
■
General Steps for Circuit Card Installation 3-1
Installing a Circuit Card in the MAP/40 3-2
■
The 486 CPU Circuit Card – 50MHz or 25MHz 3-4
Verifying Jumpers on the 486 50MHz CPU 3-6
Verify the Jumpers on the 486 25MHz CPU 3-7
Verifying Switch Settings on the 486 CPU 3-8
Making Header Connections for Keyboard and
Serial Ports 3-8
■
The SCSI Host Adapter Circuit Card 3-10
Verify the Jumpers on the SCSI Circuit Card 3-12
Verifying Switch Settings on the SCSI Circuit Card 3-13
■
The Remote Maintenance Card 3-14
4
Performing the Upgrade
4-1
■
What’s in This Chapter 4-1
■
Before You Start the Upgrade 4-1
■
Upgrading the MAP/40 Hardware 4-1
Removing Old Circuit Cards 4-2
Installing the 486 CPU Card and Remote
Maintenance Card 4-3
Removing the Old Drive Units 4-6
Installing the SCSI Hard Disk Drive 4-6
Installing the SCSI Cartridge Tape Drive 4-10