(3) BUSY STATION CALLING TONE
852 Hz and 697 Hz signals are output from Pin 61 of IC7 alternately at intervals of 60 ms.
The signal flow is shown below.
(4) DTMF SIGNAL
A DTMF tone is generated by IC7 and the signal flow is shown below.
High Group
1209 Hz
1336Hz
1477Hz
697 Hz
1
2
3
Low
770 Hz
4
5
6
Group
852 Hz
7
8
9
941 Hz
*
0
#
(5) KEY-IN TONE
An 852 Hz single tone is used as the key-in tone. A tone is generated from IC7 and is heard at the speaker.
The signal flow is shown below.
CONDITION
IC8 SWA
IC8 SWB
IC8 SWC
IC8 SWD
Ringing
OFF
OFF
OFF
ON
Call Waiting
OFF
OFF
ON
OFF
Tone Dial (Handset)
ON
ON
OFF
OFF
Tone Dial (Speakerphone)
ON
OFF
ON
OFF
19
KX-T7565AL / KX-T7565AL-B
Summary of Contents for KX-T7565AL
Page 3: ...3 LOCATION OF CONTROLS 3 KX T7565AL KX T7565AL B ...
Page 22: ...9 TROUBLE SHOOTING GUIDE 9 1 NO OPERATION 22 KX T7565AL KX T7565AL B ...
Page 24: ...9 4 SPEAKER PHONE TROUBLE 9 5 TONE DIAL TROUBLE 24 KX T7565AL KX T7565AL B ...
Page 25: ...9 6 HANDSET TROUBLE 25 KX T7565AL KX T7565AL B ...
Page 28: ...11 TERMINAL GUIDE OF IC S TRANSISTORS AND DIODES 28 KX T7565AL KX T7565AL B ...
Page 29: ...12 CABINET AND ELECTRICAL PARTS LOCATION 29 KX T7565AL KX T7565AL B ...
Page 30: ...13 ACCESSORIES AND PACKING MATERIALS 30 KX T7565AL KX T7565AL B ...
Page 34: ...34 KX T7565AL KX T7565AL B ...
Page 36: ...KX T7565AL KX T7565AL B 36 ...
Page 39: ...39 KX T7565AL KX T7565AL B H KXT7565ALL4 KXT7565ALBL4 Printed in Japan ...
