Nortel Passport 15000 Hardware Installation And Maintenance page 684

684 Chapter 17 Hardware procedures
Procedure job aid
Figure 271
Location and orientation of the fans on an upper (front) or lower (rear) cooling unit
Cooling unit
241-1501-240 5.2S2
• If the fuse is blown, the controller is the cause of the apparent fan
failure. Do the task "Fan controller replacement" (page 102) and then
put the same fan back in place.
• If the fuse is not blown, the fan has failed. Continue replacing the fan.
7 Unless your Passport 15000 or 20000 is still covered by a replacement
warranty for hardware, a failed fan is not returned to Nortel Networks.
Fan controller
Mounting screw
Fan
Grill
PPT 3436 009 AA