Nortel North American DMS-100 Instruction Manual page 168

At the front of the cabinet
18
At the front of PDC
19
At the front of CPDC
20
At the front of the cabinet
21
22
23
24
25
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 electronic module
CPC A0383326, A0383327, A0383984
Determine if power for the cooling unit connects through a PDC or a CPDC.
If the power for the cooling unit
connects through a PDC
connects through a CPDC
To insert the cooling unit fuses, push the fuse cartridges straight into the front
panel of the PDC.
Go to step 21.
Throw the circuit breakers for the cooling unit.
Determine if all the cooling unit fans work.
Note: If one or more of the cooling unit fans does not work, the fan failure
lamp turns ON. The fan failure lamp is at the top of the cabinet between
the doors.
If
all fans work
any fans do not work
To reinstall the cooling unit cover, insert the mounting screws into the cover.
Note: Step 9 shows the location of the mounting screws.
Close the cabinet doors.
Go to step 25.
For additional help, contact the next level of support.
The procedure is complete.
Do
step 19
step 20
Do
step 22
step 24
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(end)