Panasonic KX-TE82494X Service Manual ▷ View online
9
KX-TE82494X
6.2.
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.
6.2.1.
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).
6.2.2.
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
attached properly.
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.
6.2.3.
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.
6.2.4.
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.
10
KX-TE82494X
7 Schematic Diagram
D
F
E
C
B
H
G
4
5
7
6
3
LA[0]
LA[1]
LD[7]
LD[0]
LD[1]
LD[1]
LD[2]
LD[2]
LD[3]
LD[3]
LD[5]
LD[5]
LD[4]
LA[2]
LA[3]
LA[4]
LD[6]
LD[6]
R5C
22k F
CID[2]
R11A
240k F
C20C
50V/0.01u
CID[1]
C20A
50V/0.01u
CID[3]
R5B
22k F
R11B
240k F
R11C
240k F
+2.5V
C20B
50V/0.01u
+3.3V
R5A
22k F
C6
10V/33u
TP52
TP60
TP70
R10B
68K
TP44
TP90
TP76
R20
10K
R30
1M
TP34
J5
0
TP38
TP29
TP87
DG
DG
DG
C31
50V/0.01
C9
IC8
1
AVSS1
2
AVDD2
3
AINP3
4
AINM3
5
GS3
6
AIN3
7
AINP2
8
AINM2
9
GS2
10
AIN2
11
AVSS11
12
AVDD12
13
AINP1
14
AINM1
15
GS1
16
AIN1
17
AINP0
18
AINM0
19
GS0
20
AIN0
21
VREF
22
AVSS22
23
AVDD23
24
MODE3
25
MODE2
26
MODE1
27
MODE0
28
VSS28
29
VDD29
30
NIRQ
31
NWAIT
32
NWR
33
NRD
34
DATA7
35
DATA6
36
DATA5
37
DATA4
38
DATA3
39
DATA2
40
VSSQ40
41
VDDQ41
42
DATA1
43
DATA0
44
NCS1
45
NCS0
46
DEC_NOCS1
47
DEC_NOCS0
48
DEC_NCSI
49
DEC_AD
50
ADD4
51
ADD3
52
ADD2
53
VSS53
54
VDD54
55
ADD1
56
ADD0
57
CLK_EN
58
NRST
59
VDDQ59
60
VSSQ60
61
PLL_VCNT
62
PLLGND
63
PLLVDD
64
DT_STD3
65
DT_STD2
66
DT_STD1
67
DT_STD0
68
VDD68
69
VSS69
70
OSI
71
OSO
72
VSSQ72
73
TST_CLK
74
SCANEN
75
DT_TOE3/HWFH
76
DT_TOE2/HWCP
77
DT_TOE1/HWCLK
78
DT_TOE0/UHWD
79
VDDQ79
80
VSSQ80
81
PDATA/PIO[7]
82
PCLK/PIO[6]
83
NPCS1/PIO[5]
84
NPCS0/PIO[4]
85
PDET3/PIO[3]
86
PDET2/PIO[2]
87
PDET1/PIO[1]
88
PDET0/PIO[0]
89
VDD89
90
VSS90
91
PIN7
92
PIN6
93
PIN5
94
PIN4
95
PIN3
96
PIN2
97
PIN1
98
PIN0
99
VDDQ99
100
VSSQ100
DG
C34
NC
TP53
TP47
R22
10K
C50
NC
C41
50V/0.01
TP79
TP42
C43
NC
TP37
+3.3V
R10A
68K
TP32
TP74
TP50
DG
C10
50V/20P
TP61
TP69
TP91
C35
NC
C32
50V/0.01
TP45
C7
50V/0.1
TP77
C11
50V/22P
C39
10V/0.1
R10D
68K
C51
NC
TP35
DG
C48
50V/0.01
C42
NC
TP94
TP40
+3.3V
TP30
R7
NC
NC
TP39
TP48
TP92
TP64
DG
TP72
C23
10V/1u
C8
50V/0.1
TP43
TP75
+3.3V
TP56
TP33
TP89
C52
16V/10u
C49
50V/0.01
C38
10V/0.1
TP51
TP28
C44
NC
TP88
R10C
68K
C46
NC
TP93
C21C
10V/1u
R21
10K
R6
100
R31
1K
+3.3V
TP46
4M
TP78
TP36
TP95
TP41
DG
TP57
TP31
C30
50V/0.01
C21B
10V/1u
TP49
X3
4.096MHz
TP73
C36
NC
TP65
C47
50V/0.01
C40
10V/0.1
C45
NC
R23
10K
DG
C21A
10V/1u
J15
10k
+3.3V
DG
+3.3V
TP54
TP27
TP26
TP25
TP24
RA2
10K
1
2
3
4
5
6
7
8
RA1
10K
1
2
3
4
5
6
7
8
6
7
8
C33
50V/0.01
C37
NC
C53
50V/220p
DG
R12A
NC
R12B
NC
R12C
NC
TP102
TP101
TP100
+3.3V
+3.3V
DA1A
12
12
3
DA1B
3
12
3
+3.3V
DA1C
C22
16V/0.1u
AIN0
AIN1
AIN2
VREF
+3.3V
J8
0
+3.3V
R24
100K
R25
100K
C26
50V/2.2u
IC10
1
2
3
4
8
C25
0.022
C24
25V/3.3u
LA[2]
LA[3]
LA[4]
DG
J3
NC
J4
NC
J6
0
J16
NC
J7
NC
TP105
TP106
TP107
J13
NC
(1)
(2)
(3)
(4)
(5)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(11)
(12)
(13)
(7)
(8)
(9)
(10)
(11)
(12)
(13)
(14)
(15)
(16)
(16)
(17)
(18)
1.5~1.7V
0.8~0.9V
3.3V
0V
0V
3.3V
0V
3.3V
11
KX-TE82494X
D
F
E
C
B
H
G
7
8
10
9
D[5]
A[1]
D[7]
NIOWR
D[2]
NIORD
NCS_CID
D[3]
D[0]
A[5]
D[1]
D[4]
A[4]
D[6]
NRESET
A[3]
A[0]
A[2]
LD[7]
LD[0]
LD[1]
LD[1]
LD[2]
LD[2]
LD[3]
LD[3]
LD[5]
LD[5]
LD[4]
nCS0
LD[6]
LD[6]
TP4
DG
TP11
TP20
TP3
TP23
DG
R60
220
CID[2]
RA5
22
4
3
2
1
8
7
6
5
7
6
5
RA3
220
4
3
2
1
8
7
6
5
7
6
5
R64
220
TP7
TP19
CN1
Call ID1 Card
11
22
33
44
55
66
77
88
99
10 10
11 11
12 12
13 13
14 14
15 15
16 16
17 17
18 18
19 19
20 20
21 21
22 22
23 23
24 24
25 25
26 26
27 27
28 28
29 29
30 30
+3.3V
TP16
DG
R63
220
TP21
CID[1]
TP13
TP18
TP14
TP15
R61
220
RA4
22
4
3
2
1
8
7
6
5
7
6
5
C1
50V/0.01u
DG
TP8
TP1
TP12
R62
220
TP17
TP10
TP9
DG
CID[3]
TP22
TP2
FIL1
1
2
3
DG
J2
N.C
+2.5V
+3.3V
D1
TP103
L1
22uH/210mA
TP104
IC19
1
LX
2
VSS
3
VOUT
4
CE/MODE
5
VIN
C60
16V/10u
+2.5V
+2.5V
J1
C63
50V/1.0u
DG
C62
16V/4.7uF
C61
50V/0.1u
C73
5
0v/0.01u
C71
5
0v/0.01u
C74
5
0v/0.01u
C72
5
0v/0.01u
+3.3V
DG
C75
50v/0.01u
C80
50v/0.01u
C77
50v/0.01u
C76
50v/0.01u
C78
50v/0.01u
C79
50v/0.01u
IC10
5
6
7
IC20
A
1
B
2
C
3
G1
6
G2B
5
G2A
4
Y0
15
Y1
14
Y2
13
Y3
12
Y4
11
Y5
10
Y6
9
Y7
7
VCC
16
GND
8
+3.3V
DG
IC22
1
CLK
2
D
3
Q
4
GND
5
Q
6
CLR
7
PRE
8
VCC
+3.3V
DG
C13
50V/0.01
C14
50V/0.01
LA[3]
LA[4]
LA[2]
nCS0
nCS0
DG
+3.3V
C12
50V/0.01
C15
50V/100p
DG
R65
100k
IC21
1
2
2
3
4
5
J12
NC
TP109
TP110
R66
220
R67
220
TP113
TP114
TP111
TP112
90mA
KX-TE82494X SCHEMATIC DIAGRAM No.1
(1)
(2)
(3)
(4)
(5)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(7)
(8)
(9)
(10)
(11)
(12)
(13)
(11)
(12)
(13)
(14)
(15)
(16)
(16)
(17)
(18)
3.3V
0V
0V
3.3V
0V
0V
2.5V
12
KX-TE82494X
8 Printed Circuit Board
8.1.
Component View
8.2.
Bottom View
KX-TE82494
/TA82493
/TE82493
CID
KX-TE82494X COMPONENT VIEW
C32
C36
C49
C46
CN1
RA4
RA5
RA3
30
C35
C31
C31
C51
1
1
25
26
50
51
75
76
100
1
4
8
5
C48
IC8
IC19
C45
C41
C76
C10
C11
C7
C8
C6
C80
C52
C74
C75
C9
C33
C47
C30
C37
C50
C34
J16
J15
J2
FIL1
J7
J8
J1
C26
C61
C78
C44
C40
C42
C38
C39
C43
C24
C22
C25
C72
C63
C62
C60
C1
R21
R30
R31
X3
R7
R6
R20
R65
R25
R24
R64
L1
IC10
D1
PSUP1490Y
PbF
4M
AIN2
RA1
C53
A
1
1
1
8
9
16
DG
IC21
IC22
IC20
C14
RA2
+2.5V
+3.3V
R23
R11C
R10C
R11B
R10B
R11A
R10A
R10D
DA1C
DA1B
DA1A
VREF
C13
C77
C21A
C23
C73
C79
C71
C20A
C20B
C20C
C21B
C21C
J12
J13
J3
J4
J5
J6
C15
C12
R66
R67
R63
R22
R12A
R12B
R12C
R5A
R5B
R5C
R60
R62
R61
AIN1
AIN0
KX-TE82494X BOTTOM VIEW
Click on the first or last page to see other KX-TE82494X service manuals if exist.