The and buttons can also be used to adjust the speaker and ringer volumes (see page 7) Troubleshooting The Celestia 400 must be serviced by trained engineers. NEVER attempt any repairs or adjustments yourself — you could make the problem worse and invalidate the Guarantee. Always make sure your Celestia 400 is fully plugged into the telephone line socket and the mains power socket. If the phone does not ring … . Check that the ringer volume is not set to -0. . Check that the total REN value of a

page 8 SETTINGS page 1 Celestia 400 Turning the ringer on and off USER GUIDE By default, the ringer 1 Press 2 Press the PLAY/PAUSE/STOP button twice The Celestia says: ‘Ring on’ or ‘3 Press memo or to switch the ringer on or off 4 Press to save the new setting and leave Settings OR press to leave Settings mode without saving any OR press PLAY/PAUSE/STOP to go back to setting the time and 09:35 13-10 02/15AM MSG 04-12 02:45 13-10 02/0503 PMCALL # MSG 00-16 -5 Display see below Microphone ANSWER O