User guide

Processor Modules (T7110, 11, 12, 20, 21, and 22)
10 (Issue 1) Industrial Control Services
Figure 4. Processor Module EPROM locations.
Remove EPROM U42 from the main processor board by rotating
the chip socket’s retaining clips outward. This will eject the chip
from its socket. Remove the old EPROM and place it on antistatic
foam off to one side.