vi

OTHER FUNCTIONS....................................................................... 7-1
Aborting an Operation ...........................................................................................................7-1
Scanning NCS........................................................................................................................7-2
Selecting EGC Receiving Channel........................................................................................ 7-3
Selecting NCS Channel .........................................................................................................7-4
MAINTENANCE............................................................................... 8-1
Safety Information................................................................................................................. 8-1
General Checking and Maintenance...................................................................................... 8-2
Cleaning the terminal unit and communication unit ..........................................................8-2
Checking connectors and earth terminal ............................................................................8-2
Floppy disk drive head .......................................................................................................8-2
When the power can’t be turned on (power lamp does not light) ......................................8-2
Self Tests................................................................................................................................8-3
Self test at power application (communication unit).......................................................... 8-3
Testing the communication unit through the keyboard...................................................... 8-3
Performance Verification (PV) Test.......................................................................................8-4
PV test sequence................................................................................................................. 8-4
PV test procedure ...............................................................................................................8-5
Results of PV test ...............................................................................................................8-6
System Status Monitor...........................................................................................................8-7
Interpreting the system status monitor ...............................................................................8-8
Replacing Internal Battery..................................................................................................... 8-9
Error Messages ....................................................................................................................8-10
SPECIFICATIONS.........................................................................SP-1APPENDIX ....................................................................................AP-1
International Telex/Telephone Country Code List............................................................. AP-1
International Telex Abbreviations...................................................................................... AP-9
Glossary of Acronyms ..................................................................................................... AP-10
International Telegraphy Alphabet....................................................................................AP-11
Error Messages and Alerts............................................................................................... AP-12
LES IDs List .................................................................................................................... AP-15
Digital Interface (IEC 61162-2)....................................................................................... AP-16
INDEX ............................................................................................ IN-1Declaration of conformity to type