Nortel Passport 15000 Hardware Installation And Maintenance page 820

820 Chapter 17 Hardware procedures
241-1501-240 5.2S2
CAUTION
Risk of equipment damage and service loss
Do not use any kind of power tool on a captive screw. The
screw is necessary to keep the card, module, or cover
properly seated. If the screw is overtightened (stripping it
or its hole), the hardware may not operate correctly and
EMI containment is jeopardized.
9 Align and fasten the captive screw or screws. Tighten until snug plus a 1/5
turn. Ensure that you do not strip the threads or hole because the module
cannot seat properly.
10 Plug the cables back into the module. The connectors mate only one way.
Plugging in the cable ends the alarms generated by the software for the
cooling unit and temperature.
For Passport 15000 only, the J3 and J4 connectors on the replaced
alarm/BITS module that has PEC NTHR12 or NTHR13 may have had
inline EMI filters installed. (See the figure "An EMI filter on an alarm/BITS
connector of a Passport 15000" (page 392).) The replacement
alarm/BITS module does not require the old filters, since the unit is
shipped with factory-installed filters. If the replacement Passport 15000
module does not have the filters, follow the procedure "Installing EMI
filters on the alarm/BITS module" (page 599).