Nortel North American DMS-100 Instruction Manual page 54

1-38 Trouble locating and clearing procedures (continued)
Repairing FAN faults on an LCEI frame;
cooling unit replacement
Summary of Repairing FAN FAIL faults on an LCEI frame (continued)
(from previous page)
1
Failed
Y
fans?
N
Y
Damaged
sensors?
N
Replace
cooling unit
Is lamp
out?
N
Refer to next
level of support
297-8021-544 Standard 14.02 May 2001
(continued)
Replace fan(s)
N
Is lamp
out?
Replace/repair
sensor(s)
Is lamp
N
out?
Y
Y
End
This flowchart summarizes the
procedure.
Use the instructions that follow
this flowchart to perform the
procedure.
Y