Ericsson SPR1100 Operations Instructions Page 221

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Preventive Maintenance and Fault-finding
1. Ensure the power is turned off and the power cable is disconnected from the AC
power inlet(s).
2. Ease out the fuse carrier by placing a small, flat-bladed screwdriver in the notch
at the top of the carrier.
Caution!
When replacing the power input fuses, always ensure that a fuse of the correct type
and rating is fitted. Failure to do so results in inadequate protection.
3. Replace the fuse in the carrier.
4. Insert the fuse carrier back in the AC power inlet.
If required, use a small flat-
bladed screwdriver in the
notch at the top of the
carrier to ease it out
Fuse Carrier
AC Power Inlet
Figure 8.2
Position of Fuse Carrier
If the replacement fuse also blows, do not continue. Disconnect the equipment and
contact Customer Services for advice.
8.5.3.2 Lithium Battery
The lithium battery fitted within this p
roduct is not user replaceable and as such
should only be replaced by qualified service personnel.
8.5.4 Fan(s) Not Working/Overheating
The fans can be disabled at low temperatures to allow the unit to quickly attain
operational temperature. In the event of overheating problems, refer to Table 8.3.
Note:
Failure to ensure a free air-flow around the unit may cause overheating.
This condition is detected by a temperature sensor; it may be used to trigger
an automatic alarm.
2/1553-FGC 101 1400 Uen B
8-9
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