Panasonic KX-TDA0189XJ / KX-TDA0189X Service Manual ▷ View online
5 TROUBLESHOOTING GUIDE
5.1. CAN NOT RECEIVER CALLER ID DATA (FSK)
(Explain in case of the A port.)
5.2. CAN NOT RECEIVER CALLER ID DATA (DTMF)
(Explain in case of the A port.)
5.3. CAN NOT RECEIVER CALLER ID DATA
(Explain in case of the A port.)
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KX-TDA0189XJ / KX-TDA0189X
6 BLOCK DIAGRAM
T1
R1
Caller ID
Receiver
MT88E43
FPGA
+3.3V
CID Presense
150
Ω
Termination
Notch
Filter
PAY1
Paytone
Detecter
FX641
T2
Caller ID
Receiver
MT88E43
150
Ω
Termination
Notch
Filter
PAY2
R2
DATA0,nDR0,DCLK0,
CD0,nSTD0
CD0,nSTD0
CO1
CO2
CO3,4
CO5,6
CO7,8
PDATA0
PCLK0
nPTCS0
PT0
PT1
PT1
PT0-3
nPTCS0-1
D0-7
A0-5
nRD
A0-5
nRD
nWR
nCS
nRST
4ch
DTMF.R
(1/2)
DSTD1-8
TOE1-8
TOE1-8
D0-3
TOE0-1
DSTD0-1
nRST
nDR0-3
A0-3
D0-7
nCS0
nRD
nWR
nRST
DATA0-3
CD0-3
DCLK0-3
PDATA0
PCLK0
CLK(4M)
CLK(4M)
A4
nSTD0-3
nE43
JP
P0-7
FSK
0-3
FSK0
DATA1,nDR1,DCLK1,CD1,nSTD1
FSK1
FPGA
PT4-7
nPTCS2-3
nDR4-7
A0-3
D0-7
nCS0
nCS0
nRD
nWR
nRST
DATA4-7
CD4-7
DCLK4-7
PDATA1
PCLK1
CLK(4M)
nSTD4-7
nE43
JP
P0-7
FSK4-7
+5V
CLK(4M)
KX-TDA0189XJ/KX-TDA0189X CALLER ID/PAY TONE 8 BLOCK DIAGRAM
KX-
TDA0
189XJ
/
KX-
TDA0
189X
10
7 OUTLINE
7.1. IC8, IC12 (FPG) INSIDE BLOCK DIAGRAM
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KX-TDA0189XJ / KX-TDA0189X
7.2. DESCRIPTION OF FUNCTIONS AND CIRCUITS
7.2.1. CALLER ID (FSK) RECEIVER
When the FSK signal is sent from the station, the signal is input to the No. 1 and No. 2 PINs in the IC1A. When the IC1A detects
the FSK signal, the No.19 PIN (nCD) in the IC1A changes from High to Low. Then the signal that is demodulated from No. 17
PIN in the IC1A is output.
the FSK signal, the No.19 PIN (nCD) in the IC1A changes from High to Low. Then the signal that is demodulated from No. 17
PIN in the IC1A is output.
7.2.2. CALL WAITING RECEIVER
When the Call Waiting signal (Dual Tone) is sent from the station, it is detected inside the IC1A and then the No.21 PIN (StD)
changes from Low to High.
changes from Low to High.
7.2.3. CALLER ID (DTMF) RECEIVER
When the DTMF signal is sent from the station, the signal is input to the No.1 and No. 2 PINs in the IC7. When the IC7 detects
the DTMF signal, the No.32 PIN (STD0) in the IC7 changes from Low to High. Then the DTMF data is sent out from No.28-
No.31 PINs (Q1-Q4) by controlling the No.24 PIN (TOE1) in the IC7 from Low to High.
the DTMF signal, the No.32 PIN (STD0) in the IC7 changes from Low to High. Then the DTMF data is sent out from No.28-
No.31 PINs (Q1-Q4) by controlling the No.24 PIN (TOE1) in the IC7 from Low to High.
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KX-TDA0189XJ / KX-TDA0189X
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