Nortel North American DMS-100 Instruction Manual page 166

At the back of the cabinet
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11
At the front of the cabinet
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13
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
Remove the two screws that fasten the electronic module to the cooling unit
assembly.
Note: The screws are near the upper left-hand corner of the backplate of
the cooling unit.
Disconnect the power connector from the electronic module.
Note: The power connector is near the upper left-hand corner of the
backplate of the cooling unit.
CAUTION
Possible equipment damage or service interruption
Label all electrical connectors before you disconnect them.
If you reconnect to the wrong electrical connector, you can
cause equipment damage or service interruption.
Disconnect the four electrical connectors at the front of the electronic module.
Note: Use both hands to disconnect the connectors. Grasp the top of the
connector in one hand and the bottom of the connector in the other hand.
Press the releases at the sides of the connector top and pull on the
connector bottom.
Slide out cooling unit electronic module.
1-151
(continued)