R204
1M
R203
100
X3
R257
330K
C252
22000P
R255
68K
R256
100K
C251
22000P
R260
330K
R258
68K
C254
22000P
R259
100K
IC224
1
DIR
2
3
4
5
6
7
8
9
A
19
G
11
B
12
13
14
15
16
17
18
R299A
100
R299B
100
R299D
100
R299C
100
R299E
100
R299F
100
R299H
100
R299G
100
R270A
10K
R270B
10K
R270D
10K
R270C
10K
R270F
10K
R270H
10K
R270E
10K
R270G
10K
+5V
IC219
13
12
R801
33
IC220
5
6
R802
33
11
10
13
12
R803
33
R804
33
R805
33
LS04
1
2
C295
0.1
C296
0.1
C292
50V10
+5V
IC219
14
7
C280
0.1
+5V
C285
0.1
IC224
20
10
+5V
IC223
10
9
8
5
4
6
13
12
11
2
1
3
R308
330
R309
330
R310
330
R311
330
IC221
8
6
10
4
12
2
14
7
1
13
3
11
5
9
+5V
R301
330
R302
330
R304
330
R303
330
R306
330
R305
330
IC222
9
7
5
32
4
6
10
R312
330
R313
330
R314
330
R315
330
D252
IC219
11
10
R271
6.8K
R316
330
34
D0N
33
D1N
31
D3N
32
D2N
29
D5N
30
D4N
28
D6N
27
D7N
3
SRSTN
1
ECK
2
IRWN
5
IORN
4
IOWN
25
A2N
26
A1N
24
A3N
23
A4N
21
A6N
22
A5N
R307
330
IC219
9
8
IC219
5
6
43
CA[0]
20
A9N
19
A10N
18
A11N
6
IOC
SN
17
A12N
R280
22K
+5V
35
HWR
CN201
T
o
MB CN403 or CN404
36
HWS
IC222
14
13
IC222
12
11
R300
330
R272
100
C295
0.1
R268
100
1
2
R269
100
9
8
IC219
3
4
R317
330
14
C2MN
R318
330
R319
330
13
C4M
15
CPUCKN
R321
330
R320
330
R322
330
R323
330
R324
330
9
CHS[2]
11
CHS[0]
10
CHS[1]
7
CHS[4]
8
CHS[3]
C299
33P
R298
5.6K
C297
33P
R267
100
C2M
C279
39P
48
12
49
+15V
15
16
45
+5V
47
-15V
C262
50V33
µ
D223
R270
22
C260
25V470
µ
+15B
F200
+15V
C264
50V33
µ
C263
50V33
µ
R261
1W82
R262
1.5K
Q251
C255
50V33
µ
F201
-15V
+5V
D251
-5V
50
BELL
42
T[1]
41
R[1]
40
T[2]
39
R[2]
38
TIP
37
RING
BELL
T[1]
R[1]
T[2]
R[2]
TIP
RING
+5V
IC220
14
7
C281
0.1
+5V
IC221
14
7
C282
0.1
IC222
16
8
1
15
C283
0.1
+5V
+5V
C284
0.1
IC223
14
7
+5V
+5V
3
4
IC216
16
ESt
17
St/G1
18
VDD
11
D1
8
OSC2
7
OSC1
2
IN-
3
GS
1
IN+
12
D2
13
D3
14
D4
10
TOE
15
StD
4
VREF
5
IC
6
IC
9
VS
S
16
ESt
17
St/G1
18
VDD
11
D1
8
OSC2
7
OSC1
2
IN-
3
GS
1
IN+
12
D2
13
D3
14
D4
10
TOE
15
StD
4
VREF
5
IC
6
IC
9
VS
S
46
OHCA
T
44
OHCAR
OHCA
T
OHCAR
TOE
STD[1]
TOE
STD[2]
D[0]
D[1]
D[2]
D[3]
D[4]
D[5]
D[6]
D[7]
D[0]
D[1]
D[2]
D[3]
D[4]
D[5]
D[6]
D[7]
A[9]
A[10]
A[11]
A[12]
A[1]
A[2]
A[3]
A[4]
A[5]
A[6]
D[0]
D[1]
D[2]
D[3]
D[4]
D[5]
D[6]
D[7]
CDSN
GND
5
0
0
0
0
0
5
4
0
0
0
0
0
0
0
5
0
4
0
4
0
3.5
0
3.5
0
3.5
0
4
0
4
0
4
0
4
0
4
0
4
4
0
3
3.6
0
0
3.6
3.0
0
Summary of Contents for KX-TA1232
Page 8: ...4 CONNECTION 8 ...
Page 9: ...9 ...
Page 16: ...16 ...
Page 19: ... 2 SYSTEM DIAGRAM OF PCM CLOCK 19 ...
Page 20: ... 3 SYSTEM DIAGRAM OF ANALOG LINE 20 ...
Page 21: ... 4 SYSTEM DIAGRAM OF POWER SUPPLY 21 ...
Page 49: ...49 ...
Page 52: ...52 ...
Page 53: ...9 2 NO DIAL TONE CHECK EXTENSION BOARD 53 ...
Page 54: ...54 ...
Page 55: ...9 3 CANNOT DIAL CHECK EXTENSION BOARD 55 ...
Page 56: ...9 4 CANNOT ACCESS AN EXTENSION CHECK EXTENSION BOARD POWER SUPPLY UNIT AND CPU BOARD 56 ...
Page 57: ...9 5 CANNOT SEND A HOLD TONE CHECK CPU BOARD 9 5 1 HOLD TONE TO COL 57 ...
Page 61: ...9 10 EXTENSION IS NOT RINGING WHILE BEING CALLED FROM A CO LINE CHECK CO BOARD 61 ...
Page 62: ...10 DIAGNOSTIC METHOD 10 1 HOW TO GET INTO SELF DIAGNOSTIC MODE 62 ...
Page 63: ...10 2 TEST ITEMS 63 ...
Page 67: ...67 ...
Page 68: ...68 ...
Page 69: ...69 ...
Page 70: ...70 ...
Page 71: ...13 EXTENSION CABLE FOR SERVICING KX TA1232 71 ...
Page 72: ...72 ...
Page 73: ...14 CABINET AND ELECTRICAL PARTS LOCATION KX TA1232 73 ...
Page 74: ...74 ...
Page 75: ...75 ...
Page 76: ...14 1 ACTUAL SIZE OF SCREWS AND WASHER 76 ...
Page 77: ...77 ...
Page 78: ...15 ACCESSORIES AND PACKING MATERIALS KX TA1232 78 ...
Page 79: ...16 REPLACEMENT PARTS LIST KX TA1232 Note 79 ...
Page 130: ...18 CABINET AND ELECTRICAL PARTS LOCATION KX TA123260 130 ...
Page 131: ...19 ACCESSORIES AND PACKING MATERIALS KX TA123260 131 ...
Page 141: ...22 CABINET AND ELECTRICAL PARTS LOCATION KX TA123270 141 ...
Page 142: ...23 ACCESSORIES AND PACKING MATERIALS KX TA123270 142 ...
Page 164: ...25 3 HOW TO REMOVE THE MAIN BOARD Procedure 25 1 25 2 25 3 1 Remove the Main Board 164 ...
Page 165: ...26 CABINET AND ELECTRICAL PARTS LOCATION KX TA123280 165 ...
Page 166: ...27 ACCESSORIES AND PACKING MATERIALS KX TA123280 166 ...