Nortel DMS-100 Series Maintenance Manual page 405

At the HIE shelf
7
Power down the NT2X70 card in slot 25 of the HIE shelf by setting the
ON/OFF switch on the power converter faceplate to the OFF position. Both
the converter FAIL LED and FRAME FAIL lamp on the frame supervisory
panel (FSP) will be ON. An audible alarm may sound. If an alarm does
sound, silence it, at the MAP terminal, by typing
>SIL
and pressing the Enter key.
If NT2X70 is in
shelf 5 slot 25
shelf 5 slot 22
8 Replace the NT2X70 card in slot 25 using the common replacing a card
procedure in this document. When you have completed the procedure, return
to this point.
9 Power up the NT2X70 card in slot 25 of the HIE shelf as follows:
a Ensure that the converter (NT2X70) is inserted. A major audible alarm
may sound. This alarm is silenced when power is restored to the
converter.
b Set the POWER switch to the ON position.
If NT2X70 suffix is
AE, or AF
AA, AB, AC, or AD
10 Toggle the ON/OFF/RESET switch on the power converter faceplate to the
RESET position and hold while setting the circuit breaker on the FSP to the
ON position. Both the converter FAIL LED and FRAME FAIL lamp on the FSP
will go OFF, release the ON/OFF/RESET switch. Go to step 12.
11 Press the RESET button on the power converter faceplate while setting the
circuit breaker on the FSP to the ON position. Both the converter FAIL LED
and FRAME FAIL lamp on the FSP will go OFF, release the RESET button.
OPM card replacement procedures
WARNING
Static electricity damage
Wear a wrist strap connected to the wrist strap grounding
point of a frame supervisory panel (FSP) while handling
circuit cards. This protects the cards against damage caused
by static electricity.
DMS-100 Family OPM Maintenance Manual XPM14 and up
in an OPM HIE
Dotrip circuit breaker
CB1 on FSP
CB4 on FSP
Dotrip circuit breaker
step 10
step 11
8-65
NT2X70
(continued)