Nortel Passport 7400, Установка оборудования, техническое обслуживание и устранение неисправностей, Страница: 357 / 438

Chapter 37 Hardware procedures 357
Passport 7400 Hardware Installation, Maintenance, and Upgrade 5.2S1
Removing a 16-slot Passport switch shelf
Remove a 16-slot Passport switch shelf after you have removed the power
supplies, processor cards and cooling unit drawer.
Prerequisites
Procedure steps
1 If the shelf used an external alarm, disconnect the external alarm cable
from the rear of the switch.
2 Use a 1/8-in. screwdriver to disconnect the cooling unit power cord from
the “C.U. Power” connector on the back of the shelf assembly. See the
figure “Cooling unit power cord” (page 395).
3 Use a 3/8-in. socket wrench to disconnect the shelf grounding cable from
the cabinet or frame and tape the cable to the rear of the shelf next to the
shelf assembly grounding stud. See the figure “Shelf assembly grounding
stud” (page 191).
4 Remove the air filter assembly. If the air filter assembly is spring-loaded,
carefully press and release the center of the air filter cartridge to
WARNING
Risk of injury
The shelf assembly weighs 20.9 kg (46 lb). You need two
people to perform this procedure.
WARNUNG
Verletzungsgefahr
Die Regalkomponente wiegt 20,9 kg. Zur Montage sind
zwei Personen erforderlich.
CAUTION
Risk of damage to equipment by moving
When moving an uncrated cabinet or shelf assembly,
protect it from strain, shock, impact, and vibration. Lack
of protection can damage or warp the equipment.