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KX-TG9581B/KX-TG9582B/KX-TGA950B
9.1.8.
Bell Reception
9.1.8.1.
Base Unit
9.1.8.2.
Handset
Cross Reference:
Telephone Line Interface
How to Check the Portable Speaker or Receiver
9.1.9.
Check TAM Operation
Cross Reference:
Power Supply Circuit
Note:
(*1) When replacing FLASH MEMORY (IC602), TAM data needs to be written to it. Refer to
Things to Do after Replacing IC
.
Check around IC601.
NO
Check around the following parts.
<Line1>
C12
3
,R119,C125,R121,C127,R12
3
,C128,R124,
RA6
3
0
<Line2>
C22
3
,R219,C225,R221,C227,R22
3
,C228,R224,
RA720
When bell signal coming,
is there bell signal at IC601:H1and H2 (Line1)
is there bell signal at IC701:15and 17 (Line2)
YES
NO
Check around the following parts.
<Line1>
R6
3
8,C6
3
6,R6
3
7,R6
3
6,C6
3
7,C6
3
5
<Line2>
C721,R724,R725,C722,R726,C72
3
NO
When bell signal coming,
is there bell signal at IC601:F
3
(Line1)
is there bell signal at IC701:12 (Line2)
YES
When bell signal coming,
is there bell signal at IC601:U8 and U9.
Does the bell sound from SPEAKER?
Check around SP+, SP-.
When bell signal is coming, is there bell signal
at BBIC (IC1:
3
5,
3
7)?
NO
NO
YES
When bell signal is coming, is there bell signal
signal at SP+, SP-?
YES
Check BBIC (IC1),C78,C79,C7
3
,C72,R77 and R76
NO
Check cable of SPEAKER and resistance value
of SPEAKER. It should be about 4 Ohm.
Check IC602, and Master BBIC (IC601)
of Base Unit. (*1)
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