Nortel North American DMS-100 Instruction Manual page 246

Replacing an NT9X95 card in a cooling unit
7
DMS-100 Family NA100 Trouble Locating and Clearing Procedures Volume 2 of 2 LET0015 and up
Trouble locating and clearing procedures (continued)
Filler panel
Power cable junction box
Filler panel
DANGER
Risk of injury
Electricity can arc when you throw a cooling unit circuit
breaker. Wear eye protection.
CAUTION
Possible loss of service
Make sure that you disconnect power to the cooling unit
before you throw the circuit breakers. If you throw the wrong
breakers, you can disconnect power to a critical hardware
component and cause loss of service.
(continued)
Frame
supervisory panel
Power distribution shelf
(breaker panel
assembly)
Supplemental power
distribution shelf
1-231