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4.1
Routine Maintenance
No routine maintenance is required for the MicroSwitch exchange. Should the operation of
any part of the system be in doubt, carry out the Engineering checks described in the
Installation section.
4.2
Battery Replacement
Any changes made to the facilities within the MicroSwitch exchange are stored in battery
backed non-volatile memory on the Processor card. The battery is an 'in-socket' lithium cell
with an expected life of 10 years. To replace the battery proceed as follows :
Use microAid to take a copy of the current user configuration.
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Remove power from the MicroSwitch exchange, then unplug the processor card.
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The battery is located in position U1 on the processor card, with the memory
plugged into the top of the battery. Unplug the memory chip and place on static
free matting. Unplug the battery, then fit a new one in its place. Plug the memory
back into the new battery ensuring that the semicircle cut-out in the memory body
is at the end nearest the small capacitor.
Extreme care must be taken when fitting the new battery and connecting the
memory to ensure that all pins are correctly inserted into their sockets and not
bent under.
The processor card contains static sensitive devices and additional care must be
taken to ensure full anti-static precautions are taken when handling
devices.
Under no circumstances should the old lithium battery be crushed or incinerated.
Plug the Processor card back into the MicroSwitch exchange, then power up the exchange.
Any special facilities will need to be re-programmed as described in Chapter 4.
&KDSWHU Maintenance
WARNING
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