TB7100 Installation and Operation Manual Replacing Modules 61
© Tait Electronics Limited December 2005
5.9 Replacing the AC Power Supply Unit, Fan and Filter
Module
Removal 1. Disconnect the base station from AC mains power.
2. Remove the fuse at the rear of the base station to disconnect the base
station from DC power.
3. Disconnect the fan
g at connector PL7 1! of the UI board.
4. Use a Torx T10 screwdriver to remove the two screws
e that hold
the AC power supply
f unit to the main chassis.
5. Slide the AC power supply unit from its position to gain access to the
fan.
6. Use a PZ1 Posidriv screwdriver to remove the two M3 x 25mm
screws
h that hold the fan in place, and remove the fan.
7. Disconnect the cable for the mains fail signal at J110
c and the
DC power cable at J102
b of the SI board.
8. Disconnect the connection (not shown) from the AC filter module
d to the AC power supply unit, and remove the AC power supply
unit.
9. Slide the AC filter module from its position and remove it.
Figure 5.7 Replacing the AC power supply unit, fan, filter module, and speaker
h
e
Torx T10
4.5lb·in
dfe
1)
bc
g
PZ1
4.5lb·in
i
1!
j
Torx T10
4.5lb·in
Cables not shown.
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