Panasonic KX-TEB308CA / KX-TE82460X / KX-TE82493X / KX-A227X Service Manual ▷ View online
101
KX-TEB308CA/KX-TE82460X/KX-TE82493X/KX-A227X
16.1. Block Diagram
16.2. Circuit Operations
16.2.1. Option Card (KX-TE82493X)
16.2.1.1. Call ID Detect Circuit
Circuit Operation
This card has three CALL ID detect circuits for support of three COL parts. If necessary to detect CALL ID on eight COLS then
three KX-TE82493 cards are required to be installed in the system. If only required to detect CALL ID on three COLS, then only
one KX-TE82493 card is required.
Incoming signal from COL is detected by CALL ID IC. The CALL ID data changed to serial data from parallel data (8 bit data) by
FPGA. After, the 16 bit CPU detect this 8 bit data and sending the CALL ID data for PITS.
three KX-TE82493 cards are required to be installed in the system. If only required to detect CALL ID on three COLS, then only
one KX-TE82493 card is required.
Incoming signal from COL is detected by CALL ID IC. The CALL ID data changed to serial data from parallel data (8 bit data) by
FPGA. After, the 16 bit CPU detect this 8 bit data and sending the CALL ID data for PITS.
NRESET
LD[7 : 0]
CID [3:1]
FSK
Receive
8E43)
Zerlink
(1ch)
LA[4 : 0]
NCS
NWR
NRD
TOE[3:0]
A54SX08A
(CAT)
FSK
Receive
T88E43)
Zerlink
(1ch)
C
O
N
N
N
E
C
C
T
O
R
NCD[2:0]
Call ID
(MT88E43B)
4.096
MHz
STD[3:0]
Q[3:0]
STD[2:0]
NDR[2:0]
DATA[2:0]
DCLK[2:0]
FSK[2:0]
20.0
MHz
KX-TE82493X CALL ID BLOCK DIAGRAM
DTMF
Receiver
(LC73854)
CID [3:1]
X3
X2
IC8
102
KX-TEB308CA/KX-TE82460X/KX-TE82493X/KX-A227X
16.3. Location of Optional Cards
16.3.1. 3-Port Caller ID Card (KX-TE82493X)
Function
Adds Caller ID support for 3 outside (CO) lines. 1 card can be installed for outside (CO) lines 1-3. A second card can be installed
for outside (CO) lines 4-6, and a third card can be installed for outside (CO) lines 7 and 8.
FSK and DTMF Caller ID types are supported. For information on the type of Caller ID used in your area, contact your telephone
company.
1. Loosen the screws and open the top and bottom front covers.
2. Slid the card between the guiderails until it clicks, and attach the connector to it.
for outside (CO) lines 4-6, and a third card can be installed for outside (CO) lines 7 and 8.
FSK and DTMF Caller ID types are supported. For information on the type of Caller ID used in your area, contact your telephone
company.
1. Loosen the screws and open the top and bottom front covers.
2. Slid the card between the guiderails until it clicks, and attach the connector to it.
Note
Use extra care to make sure you do not damage the part of the case marked with a circle.
3. Close the covers and secure the screws.
3. Close the covers and secure the screws.
Note
To uninstall the card, follow the instructions illustrated below.
1. Push the catch on the side of one guardrail in the direction of the arrow to release it.
2. Lift the edge of the card while holding the catch open. (Do not touch the circuit board of the card during the operation.)
103
KX-TEB308CA/KX-TE82460X/KX-TE82493X/KX-A227X
16.4. Troubleshooting Guide
16.4.1. Cannot Receive CALL ID Data (FSK)
16.4.2. Cannot Receive CALL ID Data (DTMF)
16.5. Terminal Guide of the ICs Transistors and Diodes
104
KX-TEB308CA/KX-TE82460X/KX-TE82493X/KX-A227X
16.6. Schematic Diagram
D2A
R19A
10K
D1A
C10A
0.047
R17A 390K
R8A
10K
IC1A
CALL ID IC
1
IN+
2
IN-
3
GS
4
VRef
5
CAP
6
TRIGin
7
TRIGRC
8 TRIGout
9
MODE
10
OSCin
11
OSCout
12
VSS
13
IC
14
PWDN
15
FSken
16
DCLK
17
DATA
18
DR
19
CD
20
INT
21
StD
22
ESt
23
St/GT
24
VDD
R7A
330K
+3.3V
C6A
0.1
R5A
82KF
R11A
470KF
R14A
100K
100K
CID[1]
R10A
470K
+3.3V
C7A
0.22
+3.3V
R19B
10K
R17B 390K
+3.3V
R11B
470KF
D1B
D2B
R7B
330K
C10B
0.047
+3.3V
C6B
0.1
+3.3V
C7B
0.22
R5B
82KF
82KF
R10B
470K
CID[2]
R8B
10K
IC1B
CALL ID IC
1
IN+
2
IN-
3
GS
4
VRef
5
CAP
6
TRIGin
7 TRIGRC
8
TRIGout
9
MODE
10 OSCin
11 OSCout
12
VSS
13
IC
14
PWDN
15
FSken
16
DCLK
17
DATA
18
DR
19
CD
20
INT
21
StD
22
ESt
23
St/GT
24
VDD
R14B
100K
R7C
330K
R14C
100K
D1C
R5C
82KF
82KF
C6C
0.1
R17C 390K
R11C
470K F
+3.3V
+3.3V
CID[3]
R8C
10K
R10C
470K
+3.3V
C10C
0.047
IC1C
CALL ID IC
1
IN+
2
IN-
3
GS
4
VRef
5
CAP
6
TRIGin
7
TRIGRC
8
TRIGout
9
MODE
10
OSCin
11 OSCout
12
VSS
13
IC
14
PWDN
15
FSken
16
DCLK
17
DATA
18
DR
19
CD
20
INT
21
StD
22
ESt
23
St/GT
24
VDD
D2C
R19C
10K
10K
C7C
0.22
R27C
100K F
R27B
100K F
R27A
100K F
0.1
C13A
0.1
C13C
0.1
C13B
X1
XTP_3.58M
TP43
TP30
TP13
TP28
TP31
TP23
TP8
TP16
TP27
TP36
TP19
TP45
TP5
TP37
TP22
TP7
TP21
TP41
TP18
TP35
TP46
TP26
TP12
TP14
TP11
TP39
TP15
TP40
TP44
TP25
TP6
TP48
TP9
TP42
TP10
TP24
TP47
TP38
TP32
TP29
TP34
TP20
C65
NC
R65
0
R66
0
C66
NC
TP186
TP185
C17A
3300P
R34A
10KF
R20A
4.7K
R23A
2.2KF
C14A
0.068
R26A
18KF
R24A
5.6KF
+3.3V
C15A
0.068
0.068
R21A
220KF
+3.3V
IC2A
3
2
1
C18A
0.22
R35A
220KF
R22A
390K F
R36A
0
C19A
3300P
IC2A
5
6
7
R25A
10KF
10KF
D3A
R33A
100K
R35B
220KF
C14B
0.068
0.068
R22B
390K F
R26B
18KF
R36B
0
R24B
5.6KF
C19B
3300P
+3.3V
IC2B
5
6
7
C15B
0.068
C17B
3300P
R21B
220KF
220KF
R25B
10KF
10KF
R34B
10KF
10KF
+3.3V
D3B
R20B
4.7K
IC2B
3
2
1
R33B
100K
R23B
2.2KF
C18B
0.22
R35C
220KF
C14C
0.068
R22C
390K F
R26C
18KF
R36C
0
R24C
5.6KF
5.6KF
C19C
3300P
+3.3V
IC2C
5
6
7
C15C
0.068
C17C
3300P
R21C
220KF
220KF
R25C
10KF
10KF
R34C
10KF
+3.3V
D3C
R20C
4.7K
IC2C
3
2
1
R33C
100K
R23C
2.2KF
C18C
0.22
TP195
TP196
TP197
TP198
TP199
TP200
TP201
TP202
TP203
TP204
TP205
TP206
TP207
TP208
TP209
TP210
TP211
TP212
TP213
TP214
TP215
TP216
TP218
TP219
TP220
TP221
TP222
TP223
TP224
TP225
TP226
TP227
TP228
TP230
Q1A
E
C
B
Q1B
E
C
B
Q1C
E
C
B
TP229
TP217
C20A
0.1u
C21A
0.1u
C20B
0.1u
C21B
0.1u
C20C
0.1u
C21C
0.1u
FSK_[0]
DCLK_[0]
DATA_[0]
nDR_[0]
nCD_[0]
STD_[0]
nCD_[1]
DCLK_[1]
nDR_[1]
FSK_[1]
STD_[1]
DATA_[1]
DATA_[2]
DCLK_[2]
nDR_[2]
FSK_[2]
nCD_[2]
STD_[2]
(1)
(2)
(3)
(4)
(5)
(6)
(7)
Caller ID (FSK) Signal
Detect (H L)
3.58MHz
Caller ID (DTMF) Signal
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