Nortel Networks BayStack 100 Series - Manual (Page 6)

Upgrade Instructions for the BayStack 100-series Version D Boot Firmware
4 893-00978-A
2. Gently disengage the DCM connector from the NMM connector and lift
the DCM off of the NMM.
Set the DCM aside. Be sure to keep the screws with the DCM so that you can
use them again later.
Removing and Replacing the PROM
To replace the PROM on the NMM baseboard, follow these steps:
1. Find the PROM in location U2 on the NMM baseboard (see Figure 3 ).
Figure 3. PROM location on the NMM baseboard
Caution: The NMM baseboard contains devices that are sensitive to electrostatic
discharge (ESD). Be sure to discharge any accumulated static electricity and to
follow ESD handling procedures (such as wearing a wrist strap) when you handle
boards and EPROMs.
Caution: The PROM socket may not always be in the same orientation to the
board as is shown in Figure 3 . Use the notch indicator to determine the correct
orientation of your PROM to the baseboard.
226EA
Notch
indicator
Boot PROM
U2