Replacing The Eprom Circuit Pack - Nortel DMS-100 Series Manual

3-4 EPROM circuit pack (NT6M63xx)

Replacing the EPROM circuit pack

To replace the EPROM circuit pack, perform the steps in the following
procedure.
Procedure 3-2
Replacing EPROM circuit pack (NT6M63BF, NT6M63CF, NT6M63CH, NT6M63CJ, NT6M63CL,
and NT6M63FE) - slot 2
Step Description
CAUTION
Since all DPP circuit packs are static sensitive, be careful when handling them.
Wear a wrist grounding strap when working with the DPP.
WARNING
Since the DPP is powered up during this procedure, observe all safety procedures
for operations on live equipment.
1
To remove the front panel of the DPP, loosen the four screws located on the left and
right hand sides. Once removed, put the front panel in a safe place to avoid damage,
bending and scratching.
2
Get the replacement circuit pack from the spares kit.
3
Remove the protective electrostatic bag and place it on a suitable, grounded surface.
4
Make sure the replacement circuit pack matches the faulty circuit packs part number
and has the correct revision level. Also, make sure the suspected faulty pack is in the
standby processor. Verify that the release number for any applicable firmware on the
replacement circuit pack is the same or higher as the release number found on the
faulty circuit pack.
5
Place the processor unit with the suspected faulty pack in the standby mode, by putting
the other processor in the ONLY mode. The other processor is defined as that
processor that does not have the suspected faulty pack.
At the Switch and Status Panel of the DPP:
a. Press the A/B Select Switch to match the other processor.
b. Press the O/P Mode Select Switch to O.
c. Turn the Mode Switch to the right and release.
297-1001-539 Standard 01.03 September 2000
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