Qpc659 Dual Loop Peripheral Buffer Card - Nortel Meridian 1 Hardware Replacement Manual

QPC659 Dual Loop Peripheral Buffer Card

2 Remove enough cards on both sides of the BTU to access the unit.
See Circuit Card: Installation and Testing (553-3001-211) for BTU slot
locations.
3 Gently pull the BTU out of the card cage.
4 Insert the replacement BTU into the vacated slot.
5 Reinstall the cards on both sides of the BTU.
6 Turn on power to the module:
— With AC power, set the MPDU circuit breaker to ON (up).
— With DC power, set the power supply switch to ON (up).
Note: As necessary, software reenable cards in the module. See the
appropriate replacement procedures in this document.
7 Tag defective equipment with a description of the problem and
package it for return to a repair center.
Use this procedure to replace a dual loop peripheral buffer (DLB) card.
See Administration (553-3001-311) for a description of all maintenance
commands, and 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
Service Interruption
Service is interrupted when a loop is disabled.
Replacing equipment
Hardware Replacement
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