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2. Pull to remove the fan unit.
3. When installing the fan unit, match the fan unit guide to the fan unit rail and push the fan
unit into the nest along the rail. And then connect the node fan unit connector. The fan
unit should be cautiously installed, make sure that there is no impact on the unit.
4. Make sure that the fan starts revolving when the plug and socket of the fan unit and the
print circuit board of the nest are connected.
n
Replacing Fuse for Fan Power Supply Unit
Although the fuse for fan power supply unit is not defined as the parts with a life span, how to
change the fuse is explained as follows.
The fuse on the external interface unit is illustrated as follows.
(Part no, S9528VK 1.6 A)
Fan unit
Power supply unit
for fan unit
Fuse
Power supply output connector
Mounting screw
Power supply input terminal
Figure 7.7.2-2 Fuse for Fan Power Supply Unit
l
Procedure for Replacing Fan Power Fuses
The fuse for fan power supply unit should be changed according to the following procedure.
The fuse for power supply unit can be changed without stopping the system.
1. Pull out the fuse to be replaced. It may not be easy to remove by a hand, however, with a
radio pliers, the fuse can be easily removed.
2. Before putting the new fuse, make sure it has the same nominal current as the replaced
one. Insert the fuse with the imprints facing up.
3. Check if the fan is working properly.
n
Replacing Power Supply Unit for Fan Unit
The route of the power cable inside the power supply unit for fan unit and the position of pow-
er cable outlet varies with the slot in which the power supply unit for fan unit is installed.
The power supply output connector N1 is located at the right-hand side of the power supply
unit for fan unit N1.
And the power supply output connector N2 is located at the left-hand side of the power supply
unit for fan unit N2 as shown in the following figure.
L N
100-120 VA
,
TM1
220-240 VA
,
L
N
100-120 VA
,
TM1
220-240 VA
,
PSU
CN1
FUSE
CN2
PSU
N1
N2
Fuse
Power supply unit
for fan unit (N2 slot)
Power supply unit
for fan unit (N1 slot)
Power supply input terminal
Power supply output connector
(N2 side)
Power supply output connector
(N1 side)
Figure 7.7.2-3 Power Supply Unit for Fan Unit
<7.7 Parts Requiring Periodical Replacement >
7-38
IM 32Q06C10-31E
4th Edition : Jan.30,2015-00