Panasonic KX-TDA6382X / KX-TDA6382SX Service Manual ▷ View online
33
KX-TDA6382X/KX-TDA6382SX
6.2.
In Case of the Sub Board is Defective
OK
OK
NG
NG
Check the test
land between [+5V]
and [GND].
Replace the defective parts.
Check
Connector
CN8-33 Pin.
OK
Resolder the defective parts.
Check the
soldering of IC6,
IC7.
Replace the defective parts.
Check
Connector
CN8-34 Pin.
Check the test
land between [+3.3V]
and [GND].
Resolder the defective parts.
Check the
soldering of
IC508, IC609.
NG
NG
NG
OK
NG
OK
The card doesn't work.
Check for short of the power supply.
(The power supply should be OFF.)
OK
END
Check the signals
as followings
D[7:0], A[5:0], 4M_CLK,
nRD, nWR, nRST.
as followings
D[7:0], A[5:0], 4M_CLK,
nRD, nWR, nRST.
Check the soldering
of related pins of
IC508, IC609.
of related pins of
IC508, IC609.
NG
Resolder IC508, IC609
NG
Replace IC508, IC609
OK
OK
34
KX-TDA6382X/KX-TDA6382SX
In case of the Sub Board is Defective (Continue)
NG
NO
OK
OK
No ring tone.
Check R5I-P, C3I-P.
Replace the
damaged parts.
Check the photo couplers.
The four pins of PC2I-P and
PC1I-P should repeat
L → H → L → H
while the bell is ringing.
Replace the photo
couplers and the
peripheral R or C.
Replace the relevant
CODEC IC6 and IC7.
CODEC IC6 and IC7.
END
35
KX-TDA6382X/KX-TDA6382SX
In case of the Sub Board is Defective (Continue)
NO
NO
OK
OK
NG
OK
NG
OK
NG
OK
NG
OK
The line can not be acquired.
Is the CODEC(IC6,IC7) dial port
H
ĺ L while the line is acquiring ?
Replace the NG parts of
CODEC.
Replace the NG parts of
RL3I-P.
Replace the NG parts of
Q4I-P.
Replace the NG parts of
D3I-P.
Replace theNG parts of
L1I-P, LP2I-P, L3I-P, L4I-P.
Replace the NG parts of
TH1I-P or J1I-P.
Are RL3I-P ON
while the line is acquiring ?
Check the transistors
Q4I-P.
Check D3I-P.
Check L1I-P, LP2I-P, L3I-P, L4I-P.
Check TH1I-P or J1I-P.
END
36
KX-TDA6382X/KX-TDA6382SX
In case of the Sub Board is Defective (Continue)
NO
Yes
NG
Cannot make an outgoing call.
(DTMF Dialing Mode)
Can DTMF signal be sent
between T-R?
Confirm DTMF waveform of
Vout pin(51, 53, 60, 62) of Codec.
Replace the faulty parts of
IC6, 7.
OK
NG
Confirm DTMF waveform
of OP_AMP IC1I-P pin1.
OK
Go to the flowchart
"The line cannot be acquired."
NG
The dial tone can be heard
from the station.
Confirm Dial tone waveform
of OP-AMP IC1I-P pin1.
OK
NG
Confirm Dial tone waveform of
Vin pin(49, 55, 58, 64) of Codec.
NO
END
Yes
OK
Replace the relevant Codec
IC6, 7.
NG
Replace the faulty parts of
IC1I-P.
Replace the faulty parts of
IC1I-P.
Check C11I~P (0.1μF).
Replace the faulty parts of
C11I~P.
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