19
KX-TS620BX1
8.1.9.
Check Pulse Dial
Note:
BBIC is IC901.
8.1.10. Check DTMF Dial
Cross Reference:
YE
S
YE
S
YE
S
NO
NO
NO
(
S
et di
a
l mode to PUL
S
E mode, di
a
l
a
num
b
er )
Is there pulse monitor sound ?
Is there pulse sign
a
l (3.2V~0)
a
t
ba
se of Q109 ?
Is there pulse sign
a
l (0.6V~0)
a
t
ba
se of Q104 ?
Check Q104, Q103, R10
8
, R113.
Check R910, C905
a
nd C42
8
.
Check BBIC
a
nd L316.
Check Q109.
(
S
et di
a
l mode to TONE mode, di
a
l
a
num
b
er )
Check DTMF tone output to LINE in
S
i
g
nal Route.
