Nortel North American DMS-100 Instruction Manual page 172

4
DMS-100 Family NA100 Trouble Locating and Clearing Procedures Volume 2 of 2 LET0015 and up
Trouble locating and clearing procedures (continued)
Replacing a cooling unit fan
Fuse holders
Frame
supervisory panel
Fuse holders
DANGER
Risk of injury
Electricity can arc when you remove the fuse cartridges for
the cooling unit. Wear eye protection.
CAUTION
Possible loss of service
Remove only the cooling unit fuses. Removal of the wrong
fuses can disconnect power to a critical hardware component
and cause loss of service.
CPC A0345301
1-157
(continued)