Nortel North American DMS-100 Instruction Manual page 213

1-198 Trouble locating and clearing procedures (continued)
Replacing a fan in a 28-in. cabinet
13
14
15
16
17
18
At the back of the cabinet
19
20
At the front of the cabinet
21
22
23
24
25
297-8021-544 Standard 14.02 May 2001
Remove the fan that has faults.
Position the replacement fan on the fan tray in the same position used for the
fan that has faults.
Screw the four bolts into the fan from the bottom of the tray.
Plug the two electrical connectors on the fan tray into the corresponding
connectors on the fan.
Slide the fan tray back into the cabinet.
Tighten the two screws that hold the fan tray in place.
Connect the ten-pin electrical connector on the fan again.
Close the cabinet doors.
Determine if the replacement fan works.
If the replacement fan
works
does not work
Close the filter access panel.
Turn OFF the FAN FAIL OVERRIDE switch.
Close the cabinet doors. Go to step 26.
For additional help, contact the next level of support.
(continued)
Do
step 22
step 25
Fan
Fan tray
Bolt (4)