39
KX-TGD320ALB/KX-TGD322ALB/KX-TGD323ALB/KX-TGDA30AZB
9.1.12. Check Bell Reception
9.1.12.1. Base Unit
9.1.12.2. Handset
Cross Reference:
How to Check the Handset Speaker or Receiver
9.1.13. Check TAM Operation
When bell signal is coming, is there bell sound
signal at BBIC (IC501 5pin : BELL)?
YES
Check around C101, C102, C110, C112, C113, R113,
R114, R111, R112, P101, D113, Q111
NO
Check IC501 of Base Unit.
Check around IC501 (VDD_PA), C507, C475, C477, C479
NO
Doe
s
the
b
ell
s
o
u
nd from SPEAKER?
Check
a
ro
u
nd SP+, SP- .
When
b
ell
s
ign
a
l coming, i
s
there
b
ell
s
o
u
nd
s
ign
a
l
a
t BBIC (IC1:
3
5,
3
7)?
NO
NO
YES
When
b
ell
s
ign
a
l coming, i
s
there
b
ell
s
o
u
nd
s
ign
a
l
a
t SP+, SP- ?
YES
Check BBIC (IC1), C78, C79, R77, R76.
NO
Check c
ab
le of SPEAKER
a
nd re
s
i
s
t
a
nce v
a
l
u
e
of SPEAKER.
Check IC601
a
nd BBIC (IC501) of B
as
e Unit.
Is there a TAM icon on the Handset display?
Turn on the Answering System.
Check
Power Supply Circuit
.
NO
NO
YES
I
s
the volt
a
ge of VBAT of B
as
e Unit
ab
o
u
t
3
.0 V
a
nd +
3
.0V
ab
o
u
t
3
.0 V?
YES
Содержание KX-TGD320ALB
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