Read Panasonic KX-FM131CE Service Manual Simplified online
4 CIRCUIT OPERATIONS
4.1. CONNECTION DIAGRAM
Change from original page 139 (6.1. CONNECTION DIAGRAM)
LCD
(COB)
CN103
TO TEL LINE
DIGITAL
BOARD
BOARD
CN104
TO EXT. TEL
CIS
POWER
SUPPLY
BOARD
SUPPLY
BOARD
CN504
3
4
4
1
2
2
5
6
7
8
9
6
7
8
9
10
CN506
1
2
3
4
5
2
3
4
5
CN508
+24V
+24V
PG
+24V
PG
1
2
3
4
5
6
7
8
2
3
4
5
6
7
8
PG
+5V
TM
STB1
STB2
+5V
TM
STB1
STB2
9
STB3
10
THCLK
11
THLAT
12
THDAT
CN505
CN301
CN304
FG
1
JOG2
2
JOG1
3
GND
4
+5V
5
KSTART
6
KLATCH
7
KSCLK
8
KTXD
9
+24V
+24V
+24V
PG
PG
DG
+5V
KRXD
10
1
2
3
4
5
6
7
8
9
2
3
4
5
6
7
8
9
CN509
+24V
+24V
+24V
PG
PG
DG
+5V
1
2
3
4
5
6
7
8
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
2
3
4
5
6
7
8
10
11
11
OPERATION
BOARD
BOARD
1
2
3
4
5
6
7
8
9
2
3
4
5
6
7
8
9
RESET
11
CN102
CN502
DG
1
AG
2
+5VA
3
+5VD
4
+24V
5
HSRX
6
TONE1
7
HSTX
8
NC
9
1
2
3
4
5
6
7
8
2
3
4
5
6
7
8
1
+24V
2
+24V
3
GND
4
GND
5
+5V
6
THER
7
STB1
8
STB2
9
STB3
10
THCLK
11
THLAT
12
THDAT
9
CN101
CN501
BELL
1
T/P
2
DCN
3
CPC
4
MDL SEL
5
LINE RLY
6
BREAK
7
LINE RX
8
ANALOG BOARD
HAND
SET
SET
CN105
HSMIC+
HSSP-
HSSP-
4
3
3
HSSP+
HSMIC-
HSMIC-
2
1
1
THERMAL
HEAD
HEAD
MON RX
9
LINE TX
10
1
2
3
4
5
6
7
8
9
2
3
4
5
6
7
8
9
10
HOOK
SW
GND
+5V
VO
RS
R/W
E
+5V
VO
RS
R/W
E
D4
D0
D1
D2
D3
D1
D2
D3
D5
D6
D7
D6
D7
10
11
12
13
14
11
12
13
14
X501
32.768kHz
X502
24MHz
X503
32.256MHz
A
B
NA
B
NA
MOTOR
NB
COM
COM
CLK
SIG
GND
+5V
GND
+5V
GND
SI
GND
SI
GND
G. LED
V. LED
V. LED
CN512
MIC
MIC+
MIC-
MIC-
1
2
2
POSITION SW
MPOS
GND
GND
CN503
CN507
SPEAKER
SP+
SP-
SP-
1
2
2
2 1
CN303
HOOK
GND
GND
1
2
2
CN401
1
2
2
17
KX-FM131CE
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