marposs E20N - Ordinary Maintenance Procedures; Extraordinary Maintenance Warning

Troubleshooting and Maintenance 15
4.3 Ordinary maintenance
4.3.1 Cleaning of the electronic unit
To clean out the external side of the electronic unit and the front panel use a damp
cloth.
Do not use solvents or abrasive products.
4.3.2 Cleaning of the contactless microphone
In case of microphone/s with contactless transmission (code 3424802000 +
3424802011), carry out the cleaning operations of the transmission faced surfaces
periodically according to the use conditions (for example, with compressed air).
4.4 Extraordinary maintenance
Warning
All special maintenance operations must be carried out by authorized
personnel.
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