Using the intercom .............................................................................................................. 113
Chapter 10 Maintenance ............................................................................................... 115
10.1 Maintenance......................................................................................................................116
Routine checks .................................................................................................................... 116
Unit cleaning instructions .................................................................................................... 116
11.3 Troubleshooting ................................................................................................................119
Performing a system reset ................................................................................................... 119
System test .......................................................................................................................... 119
11.7 DSC troubleshooting .......................................................................................................126
12.3 Learning resources ......................................................................................................... 133
13.8 Radio usage.....................................................................................................................140
14.1 Ray90 / Ray91 spares ......................................................................................................142
14.2 Extension cables .............................................................................................................142
14.3 Accessories......................................................................................................................142
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