Trouble locating and clearing procedures (continued) 1-235
DMS-100 Family NA100 Trouble Locating and Clearing Procedures Volume 2 of 2 LET0015 and up
Replacing an NT9X95 card in a cooling unit
(continued)
18
Slide the electronic module back in until the module touches the cooling unit
backplate.
19
Reconnect the four electrical connectors you disconnected in step 12.
Note: To reconnect each connector, press the releases on the connector
top and insert the connector bottom until it locks in place. If you cannot
insert the connector bottom, turn it one-half turn and try to insert it again.
At the back of the cabinet
20
Insert the screws that fasten the electronic module back into the cooling unit
assembly. You removed these screws in step 10.
21
Reconnect the power connector you disconnected in step 11.
22
Determine if power for the cooling unit connects through a PDC or a CPDC.
At the front of PDC
23
Insert the cooling unit fuses into the front panel of the PDC. Push the fuse
cartridges straight into the front panel.
Go to step 25.
At the front of CPDC
24
Throw the cooling unit circuit breakers.
At the front of the cabinet
25
Determine if all 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 power for the the cooling unit
Do
connects through a PDC
step 23
connects through a CPDC
step 24
DANGER
Risk of injury
Electricity can arc when you throw a circuit breaker for the
cooling unit. Wear eye protection.
If
Do
all fans work
step 26
any fans do not work
step 28