Panasonic KX-NCP1174XJ (serv.man2) Service Manual ▷ View online
29
KX-NCP1174XJ
9 Miscellaneous
9.1.
How To Replace a Flat Package IC
Even if you do not have the special tools (for example, a spot heater) to remove the Flat IC, with some solder (large amount), a sol-
dering iron and a cutter knife, you can easily remove the ICs that have more than 100 pins.
dering iron and a cutter knife, you can easily remove the ICs that have more than 100 pins.
9.1.1.
Preparation
• PbF (: Pb free) Solder
• Soldering Iron
• Soldering Iron
Tip Temperature of 700
°F ± 20°F (370°C ± 10°C)
Note: We recommend a 30 to 40 Watt soldering iron. An
expert may be able to use a 60 to 80 Watt iron where some-
one with less experience could overheat and damage the
PCB foil.
expert may be able to use a 60 to 80 Watt iron where some-
one with less experience could overheat and damage the
PCB foil.
• Flux
Recommended Flux: Specific Gravity
→ 0.82.
Type
→ RMA (lower residue, non-cleaning type)
Note: See About Lead Free Solder (PbF: Pb free) (P.3).
9.1.2.
Removal Procedure
1. Put plenty of solder on the IC pins so that the pins can be
completely covered.
Note:
Note:
If the IC pins are not soldered enough, you may give
pressure to the P.C. board when cutting the pins with
a cutter.
pressure to the P.C. board when cutting the pins with
a cutter.
2. Make a few cuts into the joint (between the IC and its
pins) first and then cut off the pins thoroughly.
3. While the solder melts, remove it together with the IC
pins.
When you attach a new IC to the board, remove all solder
left on the land with some tools like a soldering wire. If some
solder is left at the joint on the board, the new IC will not be
left on the land with some tools like a soldering wire. If some
solder is left at the joint on the board, the new IC will not be
attached properly.
9.1.3.
Procedure
1. Tack the flat pack IC to the PCB by temporarily soldering
two diagonally opposite pins in the correct positions on
the PCB.
the PCB.
Be certain each pin is located over the correct pad on the PCB.
2. Apply flux to all of the pins on the IC.
3. Being careful to not unsolder the tack points, slide the sol-
dering iron along the tips of the pins while feeding enough
solder to the tip so that it flows under the pins as they are
heated.
solder to the tip so that it flows under the pins as they are
heated.
9.1.4.
Removing Solder From Between
Pins
Pins
1. Add a small amount of solder to the bridged pins.
2. With a hot iron, use a sweeping motion along the flat part
2. With a hot iron, use a sweeping motion along the flat part
of the pin to draw the solder from between the adjacent
pads.
pads.
30
KX-NCP1174XJ
9.2.
Terminal Guide of the ICs Transistors and Diodes
31
KX-NCP1174XJ
10 Schematic Diagram
10.1. Block Diagram
32
KX-NCP1174XJ
10.2. No.1
KX-NCP1174
XJ SCHEMATIC DIAGRAM No.1 (1/2)
(1)
(2)
(3)
(5)
(7)
(9)
(5)
(7)
(9)
(4)
(6)
(8)
(10)
(6)
(8)
(10)
(19)
(21)
(23)
(25)
(21)
(23)
(25)
(27)
(28)
(20)
(22)
(24)
(26)
(22)
(24)
(26)
(11)
(13)
(15)
(17)
(13)
(15)
(17)
(12)
(14)
(16)
(18)
(14)
(16)
(18)
D
F
E
C
B
A
H
G
4
6
3
5
2
1
TOE[5]
TOE[4]
TOE[3]
TOE[2]
TOE[7]
TOE[0]
TOE[1]
TOE[6]
EST[15]
TOE[6]
EST[2]
D[0-7]
EST[11]
DTMFR[4]
D[1]
TOE[0]
DTMFR[1]
EST[0-7]
D[2]
D[2]
DTMFR[11]
D[3]
DTMFR[0]
EST[1]
EST[8]
DTMFR[14]
EST[4]
DTMFR[2]
DTMFR[8]
D[2]
DTMFR[5]
TOE[8]
D[3]
D[0]
D[0]
D[0-7]
CLK
DTMFR[13]
D[3]
EST[7]
TOE[3]
D[2]
TOE[13]
DTMFR[12]
DTMFR[15]
TOE[9]
TOE[11]
EST[9]
D[3]
EST[8-15]
TOE[0-7]
D[1]
DTMFR[7]
EST[6]
EST[12]
DTMFR[8-15]
TOE[15]
EST[14]
TOE[1]
DTMFR[3]
D[1]
EST[3]
D[1]
TOE[7]
DTMFR[9]
EST[0]
DTMFR[6]
TOE[10]
D[0]
TOE[12]
D[0-7]
DTMFR[0-7]
TOE[14]
EST[5]
D[0-7]
TOE[2]
D[0]
EST[10]
TOE[4]
DTMFR[10]
TOE [0-7]
EST[13]
TOE[5]
TOE[15]
TOE[14]
TOE[13]
TOE[12]
TOE[11]
TOE[10]
TOE[8]
TOE[9]
+40V
Q801
E
C
B
Q805
E
C
B
C800
250V/0.1
C801
250V/0.1
+15V
C813
50V/0.1
C814 50V/470P
C815
50V/0.1
C816
50V/0.1
+40V
IC11
5
6
7
IC11
10
9
8
IC11
1
2
3
11
IC12
1
2
3
4
11
IC12
5
6
7
IC12
10
9
8
Q807
E
C
B
Q803
E
C
B
+40V
IC12
12
13
14
D808
1
2
T800
1
2
4
5
6
7
8
9
10
D806
1
2
+3.3V
+3.3V
C818
50V/0.1
IC11
12
13
14
BELL1
BELL0
DG
P.G
DG
P.G
DG
P.G
DG
P.G
Q800
E
C
B
Q802
E
C
B
C806
25V/0.082
C807
25V/0.082
C812
16V/0.047
C804
25V/0.082
C802
50V/0.1
C805
25V/0.082
C803
50V/0.1
C808
50V/0.1
C809
250V/10
C817
50V/100
C811
250V/10
D805
24V
PC804
1
2
3
4
PC800
1
2
3
4
D803
15V
D801
15V
D800
15V
D802
15V
U800
1
6
2
U800
4
3
5
DG
IC801
1 COMP
2
2
FB
3 ISENS
4 RT/CT
4 RT/CT
5
GND
6
OUT
7
VCC
8
VREF
PC803
1
2
3
4
TP800
TP835
TP865
TP823
TP809
TP836
TP822
TP827
TP802
TP871
TP847
TP850
TP829
TP811
TP833
TP8 31
TP861
TP858
TP874
TP837
TP818
TP860
TP805
TP824
TP826
TP841
TP 853
TP801
TP804
TP819
TP856
TP817
TP812
TP868
TP862
TP863
TP816
TP808
TP820
TP852
TP859
TP8 55
TP839
TP842
TP821
TP807
TP828
TP814
TP873
TP815
TP8 54
TP857
TP813
TP846
TP867
TP825
TP851
TP810
DG
+3.3V
Q804
E
C
B
Q806
E
C
B
RA4
10K
1 2 3 4
5
6
7
8
RA1
10K
1 2 3 4
5
6
7
8
RA3
10K
1 2 3 4
5
6
7
8
RA2
10K
1 2 3 4
5
6
7
8
+160V
-100V
BELL0
BELL1
TP885
TP882
TP881
TP886
TP889
J801
0
J802
0
J803
0
J804
0
TP883
TP884
TP887
TP888
+3.3V
TP10
+3.3V
TP31
TP89
+3.3V
TP45
TP84
+3.3V
C45
10V/0.1
TP86
TP68
TP66
C42
10V/0.1
TP85
DG
TP48
TP12
C8
50V/0.1
TP64
TP20
J1
0
TP8
TP18
+3.3V
TP37
DG
C28
50V/0.1
C6
50V/0.1
TP62
C36
50V/0.1
C80
10V/1
C30
50V/0.1
DG
TP46
TP40
C76
10V/1
TP39
TP81
TP6
TP82
TP33
TP80
TP44
C24
50V/0.1
DG
TP38
DG
+3.3V
TP4
C32
50V/0.1
TP79
DG
C4
50V/0.1
TP14
DG
C16
50V/0.1
TP90
C17
10V/0.1
TP87
C34
50V/0.1
TP2
DG
TP56
C12
50V/0.1
TP35
C78 10V/1
TP77
TP50
TP42
C2
50V/0.1
EST[8-15]
TP36
TP32
C10
50V/0.1
C74 10V/1
TP24
TP26
+3.3V
C22
50V/0.1
C14
50V/0.1
TP74
TP43
TP72
TP28
J2
0
TP83
TP58
+3.3V
DG
C18 10V/0.1
TP60
C26
50V/0.1
TP88
TP16
TP22
TP52
TP30
TP41
TP54
TP70
TP76
IC800
4
Vref
1
A1
3
C
2
A2
5
A5
6
A6
Q810
S
D
G
TP849
CLK
IC4
DTMF RECIEVER
1 INP1
2 INM1
3 GS1
4 TEST1
5 INP2
6 INM2
7 GS2
8 VREF
9 INP3
2 INM1
3 GS1
4 TEST1
5 INP2
6 INM2
7 GS2
8 VREF
9 INP3
10 INM3
11 GS3
12 TEST2
13 INP4
14 INM4
15 GS4
16 GTSEL1
17 GTSEL2
18 Vss
11 GS3
12 TEST2
13 INP4
14 INM4
15 GS4
16 GTSEL1
17 GTSEL2
18 Vss
19
Vdd
20
OSC0
21
OSCI
22
CLKSEL
23
nREST
24
TOE1
25
TOE2
26
TOE3
27
TOE4
28
Q1
29
Q2
30
Q3
31
Q4
32
EST/STD1
33
EST/STD2
34
EST/STD3
35
EST/STD4
36
S/nESEL
IC6
DTMF RECIEVER
1 INP1
2 INM1
3 GS1
4 TEST1
5 INP2
6 INM2
7 GS2
8 VREF
9 INP3
2 INM1
3 GS1
4 TEST1
5 INP2
6 INM2
7 GS2
8 VREF
9 INP3
10 INM3
11 GS3
12 TEST2
13 INP4
14 INM4
15 GS4
16 GTSEL1
17 GTSEL2
18 Vss
11 GS3
12 TEST2
13 INP4
14 INM4
15 GS4
16 GTSEL1
17 GTSEL2
18 Vss
19
Vdd
20
OSC0
21
OSCI
22
CLKSEL
23
nREST
24
TOE1
25
TOE2
26
TOE3
27
TOE4
28
Q1
29
Q2
30
Q3
31
Q4
32
EST/STD1
33
EST/STD2
34
EST/STD3
35
EST/STD4
36
S/nESEL
IC1
DTMF RECIEVER
1 INP1
2 INM1
2 INM1
3 GS1
4 TEST1
5 INP2
6 INM2
7 GS2
8 VREF
9 INP3
4 TEST1
5 INP2
6 INM2
7 GS2
8 VREF
9 INP3
10 INM3
11 GS3
12 TEST2
13 INP4
14 INM4
15 GS4
16 GTSEL1
17 GTSEL2
12 TEST2
13 INP4
14 INM4
15 GS4
16 GTSEL1
17 GTSEL2
18 Vss
19
Vdd
20
OSC0
21
OSCI
22
CLKSEL
23
nREST
24
TOE1
25
TOE2
26
TOE3
27
TOE4
28
Q1
29
Q2
30
Q3
31
Q4
32
EST/STD1
33
EST/STD2
34
EST/STD3
35
EST/STD4
36
S/nESEL
IC2
DTMF RECIEVER
1 INP1
2 INM1
3 GS1
4 TEST1
5 INP2
6 INM2
7 GS2
8 VREF
9 INP3
2 INM1
3 GS1
4 TEST1
5 INP2
6 INM2
7 GS2
8 VREF
9 INP3
10 INM3
11 GS3
12 TEST2
13 INP4
14 INM4
15 GS4
16 GTSEL1
17 GTSEL2
18 Vss
11 GS3
12 TEST2
13 INP4
14 INM4
15 GS4
16 GTSEL1
17 GTSEL2
18 Vss
19
Vdd
20
OSC0
21
OSCI
22
CLKSEL
23
nREST
24
TOE1
25
TOE2
26
TOE3
27
TOE4
28
Q1
29
Q2
30
Q3
31
Q4
32
EST/STD1
33
EST/STD2
34
EST/STD3
35
EST/STD4
36
S/nESEL
+3.3V
R823
390KF
R830 30KF
R91
100k
R94 100k
R43 100k
R834
22K
R87
100k
R816
10K
R844
22
R825
20KF
R68
100k
R100100k
R72
100k
R819
7.5K
R18
100k
R26
100k
R70
100k
R840
2.2K
R814
1M
R824
20KF
R66
100k
R47
100k
R827
180KF
R828
4.7K
R836
47K
R33 100k
R821
47K
R24
100k
R826
180KF
R48
NC
R818
7.5K
R833
1K
R16
100k
R37 100k
R805
680
R802 680
R807
100
R820
47K
R45 100k
R76
100k
R832 1.2M
R14
100k
R22
100k
R829 28.7KF
R98 100k
R831
750F
R848
100
R804
680
R813
10K
R31 100k
R845 4.7K
R80
100k
R847
12K
R849
100
R800
150
R817
10K
R82
100k
R855
750F
R96 100k
R803
680
R29
NC
R20
100k
R841
22
R801
150
R815 1M
R41 100k
R822
390KF
R85
100k
R35 100k
R12
100k
R842
22K
R89
100k
R806
100
R812
10K
R846
1K
R78
100k
R843
1.8
R837
10K
R810
47K
R851
47K
R808
47K
R852
47K
R809
47K
R811
47K
R853
47K
R854
47K
R850 22K
4
EST[0-7]
DTMFR[8-15]
DTMFR[0-7]
002:2A;002:2A
002:2A;002:2A
001:3G;002:7A;002:1A;003:7A;003:1A
002:2A;002:2A
003:2A;003:2A
003:2A;003:2A
1
3
2
3
1
3
2
3
4
5
5
7
9
8
6
10
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