Qpc841 Serial Data Interface Card - Nortel Meridian 1 Hardware Replacement Manual

QPC841 Serial Data Interface Card

8 Tag defective equipment with a description of the problem and
package it for return to a repair center.
Use this procedure to replace a serial data interface (SDI) card.
See Administration (553-3001-311) for a description of all maintenance
commands, and the System Messages Guide (553-3001-411) for interpreting
system messages.
DANGER
Module covers are not hinged; do not let go of the
cover. Lift the cover away from the module and set it
out of your work area.
CAUTION
Loss of Data
If the system terminal is assigned to the SDI being
replaced, assign it to another port before this SDI is
disabled.
Removing equipment
1 Software disable each port on the SDI:
LD 37
DIS TTY x
2 Set the ENB/DIS switch to DIS.
CAUTION
Service Interruption
To avoid interrupting service, set ENB/DIS switches
to DIS before disconnecting or connecting cables.
3 Tag and disconnect cables to the card you are removing.
Replacing equipment
"x" is the number of the interface device attached to
a port
Page 231 of 250
Hardware Replacement