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Modifying a Release 2.1 or Earlier
Processor for Key Mode
HDR4
SHUNT
HDR3
Do not touch
Figure E–1. Modifying the Processor for Key Mode
HDR3
board; the
CAUTION:
Do not touch
the HDR3 header on the
header is exposed when the feature module is not installed in the
processor
processor. if the HDR3 header is removed, system programming
may be deleted and will have to be restored.
E-2 Maintenance and Troubleshooting