Panasonic KX-TDA3194XJ Service Manual ▷ View online
21
KX-TDA3194XJ
7.2.
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.
7.2.1.
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).
7.2.2.
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.
7.2.3.
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.
7.2.4.
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.
7.3.
Memo
22
KX-TDA3194XJ
8 Schematic Diagram
1/4
3/4
2/4
4/4
KX-TDA3194XJ MAIN BOARD (1/4)
(a)
(b)
(c)
(d)
(e)
(f)
(g)
(h)
(i)
(1)
(2)
CHP[2]
CHP[3]
Mu/A
nDSPCS[0]
DHW[1]
DX0
LD[0-7]
LA_D[0]
DHW[1]
DX0
nDSPCS[0]
SCK1
nDSPRST[0]
SO1
SCK1
C4M
SI1
FLRST1
DTM
FR[0]
FLCS1
SO1
FLCS1
BANK[2]
UCFG[1]
UCFG[2]
SI1
UCFG[3]
PDN1
DTMFR[1]
FLRST1
LD[0]
LD[1]
LD[2]
LD[3]
LD[4]
LD[5]
LD[6]
LD[7]
nDSPACK[0]
BAN
K[1]
BANK[0]
UCFG[0]
nDSPPDN[0]
LA_D[0]
TP545
TP507
C47
0.015u
TP509
TP537
C58
18p
TP528
TP501
TP504
TP510
TP117
TP508
TP524
TP96
TP544
TP431
TP542
+3.3V
TP555
C7
NC
C43
0.1u
TP520
TP505
TP541
TP523
TP512
TP97
X1
13.824MHz
C15
0.1u
C55
0.1u
R52
1M
R51
100
TP540
TP538
TP539
TP513
TP446
C36
0.1u
TP546
TP533
C25
0.1u
GN
D
1
DG
DG
C52
15p
TP522
+3.3Vd
TP518
TP548
C49
0.1u
R8
NC
DG
NRD
DG
R48
1k
DG
nWR
TP532
TP101
C33
0.1u
HW_FH
C28
1u
TP536
R7
68
RA4 4.7k
4
3
2
1
8
7
6
5
7
6
5
C57
0.1u
TP549
DG
TP553
IC2
1
SI
2
SCK
3
RESET
4
CS
5
WP
6
VCC
7
GND
8
SO
TP543
TP
527
TP521
TP519
DG
C56
10u
TP547
TP556
TP429
TP529
J11
NC
TP516
TP552
TP503
IC1
1
GNDPA
2
SPOUTP
3
BCLK
4
TXMOD
5
RSSI
6
XIN
7
XOUT
8
VDD
9
VCCIN
10
GND10
11
RSTN
12
FL_RST
13
SIODO1
14
SIODI1
15
/CEC1
16
BGPIO6
17
HI/LO
18
BGPIO1
19
BGPIO2
20
SCLK
21
FSYNC
22
DL0
23
BGPIO15
24
CGPIO3
25
CGPIO4
26
GND26
27
VCC27
28
HWRN
29
HRDN
30
HDB7
31
BGPIO7
32
BGPIO8
33
BGPIO9
34
BGPIO10
35
DGPIO10
36
DGPIO9
37
DGPIO8
38
DGPIO7
39
DGPIO6
40
DGPIO5
41
DGPIO4
42
DGPIO3
43
DGPIO2
44
DGPIO1
45
DGPIO0
46
GND46
47
VCC47
48
DRDN
49
SIOCLK1
50
BANK1
51
AGPIO3
52
AGPIO4
53AGPIO5
54AGPIO6
55AGPIO7
56AGPIO8
57UCFG0
58HDB0
59HDB1
60HDB2
61HDB3
62HDB4
63HDB5
64HDB6
65ACKN
66GND
67VCC
68TCK
69TMS
70TDI
71TDO
72DPGIO15
73DPGIO14
74DPGIO13
75
DPGIO12
76
DPGIO11
77
BANK0
78
BANK2
79
UCFG1
80
UCFG2
81
UCFG3
82
APGIO13
83
DL1
84
GND84
85
DCIN3/PDN
86
DCIN1
87
VREF
88
MIP
89
MIN
90
DCIN2/MPWR
91
LIN1/NC
92
GNDA
93
HSMIN
94
HSMIP
95
VCCA
96
LIN0
97
LOUT0
98
HSSPOUTP
99
VCCPA
100
SPOUTN
DG
TP517
IC19
1
2
3
nRST
TP506
TP525
TP551
TP535
C51
10u
TP511
R47
100k
TP514
C45
5600p
TP502
TP99
TP526
R41
68
C44
0.1u
TP550
TP531
TP515
TP530
C46 0.1u
TP534
R44
68
TP554
R18
68
C27
2.2u
C34
0.1u
DSP
FLASH MEMORY
Auto Gain Control
Record/Playback
Vox-Detect
CODEC
()
13.824MHz
23
KX-TDA3194XJ
1/4
3/4
2/4
4/4
KX-TDA3194XJ MAIN BOARD (2/4)
(1)
(2)
(j)
(k)
(m)
(n)
(p)
(r)
(q)
nPD[2]
nPD[3]
CHP[2]
DTMFR[0]
Mu/A
C4M
DHW[1]
C4M
DHW[1]
CHP[3]
Mu/A
DTMFR[1]
DTMFR[0]
DTMFR[1]
VOX[3]
VOX[2]
VOX[1]
CNG[0]
TP2
TP74
+3.3Va
R30
82k
C21
0.1u
C3 0.1u
C62
0.047u
C31
0.022u
+5.0Va
D101
3
TP16
IC17
5
4
2
R92
22k
DG
C201
47u
C11
0.1u
TP403
+3.3Va
R3
4.7k
DG
R26
1k
TP23
TP140
IC15
1
2
3
4
8
DG
TP4
36
C42
180p
+5.0Va
TP11
+3.3Va
TP6
TP73
R2 56k
C50
2700p
VAG
R45
4.7k
C2
0.1u
C1
0.1u
R25
1k
TP138
VAG
C37
0.1u
DG
+3.3Vd
TP407
TP35
IC17
7
6
1
C16 180p
+3.3Va
R32
82k
R57
10k
TP409
R39
10k
DG
IC14
5
6
7
TP30
TP132
TP137
VAG
TP423
R21
NC
DG
TP28
+5.0Va
C24
0.1u
C20
180p
+3.3Va
C18
180p
TP25
R10 6.8k
TP135
TP54
C65
2700p
VAG
C35
0.1u
TP8
TP13
C64
0.1u
TP3
R16
470k
TP32
DG
R27
1k
R54
10k
IC7
14
7
C41
0.1u
IC10
1
VAGR
2
RO-
3
PI
4
PO-
5
PO+
6
VDD
7
FSR
8
DR
9
BCLKR
10
PDI
11
MCLK
12
BCLKT
13
DT
14
FST
15
VSS
16
Mu/A
17
TG
18
TI-
19
TI+
20
VAG
TP64
TP411
TP59
C60
0.1u
R20
NC
R91 15k
TP5
C8
120p
C6
0.1u
DG
C23
0.1u
DG
VAG
TP415
TP1
R24
1k
TP419
R11 6.8k
C61
0.01u
R40
10k
DG
IC6
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
C22
0.1u
TP66
10
11
12
R23
NC
DG
VAG
IC16
1
2
3
4
8
TP17
R43
1k
C83
NC
C19
180p
C13
0.1u
D13
DG
TP10
C30
0.022u
C63
0.022u
TP421
R28
82k
TP29
TP27
IC14
1
2
3
4
8
DG
R1 56k
DG
8
6
R31
82k
TP72
TP89
DG
IC16
5
6
7
TP417
TP24
IC11
1
VAGR
2
RO-
3
PI
4
PO-
5
PO+
6
VDD
7
FSR
8
DR
9
BCLKR
10
PDI
11
MCLK
12
BCLKT
13
DT
14
FST
15
VSS
16
Mu/A
17
TG
18
TI-
19
TI+
20
VAG
TP33
C84
NC
R42
100k
C5
0.1u
C26
0.1u
C12
0.1u
TP7
TP100
TP26
IC17
3
12
CNGSELB
R37
10k
D12
R95
120k
TP52
TP14
R5
56k
TP12
DG
TP55
IC7
3
4
5
R6
56k
CNGSELA
+3.3Va
DG
C17
0.1u
TP53
R15
470k
C32
0.022u
DG
C9
120p
+5.0Va
IC17
11
10
13
TP56
R14
470k
R12 3.9k
TP22
R93
200k
C54
0.1u
R94
330k
R17
470k
1
2
13
DG
D11
+5.0Va
TP131
C48
0.01u
R38
10k
C10
0.1u
C14
0.1u
C4 0.1u
TP401
TP9
TP4
TP31
IC15
5
6
7
+5.0Va
IC17
9
8
14
C200
NC
C29
0.022u
R4
4.7k
TP63
TP67
R46
4.7k
DA1
1
2
3
R22
NC
C53
0.1u
+5.0Va
DG
TP405
TP34
R13 3.9k
R62
22K
C59
0.01u
C112
NC
2
1
3
2
1
3
2
1
3
2
9
VOX DETECT CIRCUIT
CNG CH
SELECTOR
CNG TONE DETECT CIRCUIT
24
KX-TDA3194XJ
1/4
3/4
2/4
4/4
KX-TDA3194XJ MAIN BOARD (3/4)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(11)
(a)
(b)
(c)
(d)
(e)
(f)
(g)
(h)
(i)
LDD[6]
LDD[0]
LDD[1]
LDD[2]
LDD[4]
LDD[5]
LDD[3]
LD[7]
LD[6]
LD[5]
LD[4]
LD[3]
LD[2]
LD[1]
LD[0]
LAA[10]
LAA[11]
nCS0
nWE
LDD[3]
LUHW0
LAA[7]
LAA[0]
LAA[8]
nCS3
HWCLK1
LAA[2]
LDD[4]
nCS1
LAA[2]
LDD[5]
LAA[11]
LAA[3]
LAA[10]
nWAIT
LAA[1]
LAA[1]
LDD[2]
LDD[0]
nRD
nWE
LAA[5]
nCS2
LAA[6]
LAA[0]
nRD
LDD[7]
LDD[1]
LDD[6]
LAA[3]
nINT_OP3
nINT_OP2
nINT_OP1
nINT_OP0
LDD[7]
PATH[0]
PATH[1]
PATH[2]
PATH[3]
nCS0
LDD[0]
LDD[1]
LDD[2]
LDD[3]
LDD[4]
LDD[5]
LDD[6]
LDD[7]
LAA[9]
LAA[10]
LAA[11]
DHW[1]
C4M
C4M
HW_FH
nDSPCS[1]
CHP[0]
CHP[1]
nOE_CO
nOE_DSP
nCSPIO
nCSPIO
LAA[4]
TP192
J13
NC
LUHW1
TP311
FIL3
1
2
3
TP166
TP315
SLTSEL[1]
C67
0.1u
R85
22
TP272
+3.3Vd
R65
10k
TP191
R72
68
TP279
HW_OE
C70
3300p
TP325
TP224
J3
0
TP229
TP271
R61
22
IC8
8
A7
6
A5
4
A3
2
A1
17
B2
15
B4
13
B6
11
B8
1
DIR
19
OE
12
B7
14
B5
16
B3
18
B1
3
A2
5
A4
7
A6
9
A8
10
GND
20
VCC
2
CN103
1
TP443
TP190
SHW_CLK
TP321
R90
0
TP288
DG
DG
C66
0.1u
R74
22
TP264
TP270
nSHW_FH
TP195
IC18
12
11
13
TP199
R73
10k
TP294
+3.3Vd
TP309
TP147
CHP8k
TP277
4
R60
22
TP269
TP170
FIL2
1
2
3
DG
TP198
CHP16k
TP153
TP308
TP265
RA15
22
4
3
2
1
8
7
6
5
C106
NC
R86
22
+3.3Vd
TP268
R81
330
TP197
R89
0
LDHW1
DG
TP284
R77
100
6
IC18
2
3
1
TP263
TP312
TP276
DG
R59
22
TP262
HWCLK0
TP188
HW_FH
TP306
DG
TP283
C107 0.1u
TP442
TP261
nHW_FH
+3.3Vd
TP200
R83
150
8
TP158
TP286
TP314
R63
4.7k
TP280
nRESET
R75
68
TP171
DG
TP163
+3.3Vd
TP322
RD
TP196
TP295
DG
TP291
R67
10k
TP164
+3.3Vd
C38
NC
RA14
22
4
3
2
1
8
7
6
5
10
TP193
TP175
RST
R82
330
DG
TP310
R64 4.7k
TP169
+3.3Vd
TP287
TP187
TP317
DG
TP156
nRST
DG
TP174
+3.3Vd
TP320
IC18
5
4
9
TP186
TP319
J2
NC
+3.3Vd
TP173
DG
C39
0.1u
R69
68
+3.3Vd
R66
10k
TP285
TP185
TP326
TP172
TP440
TP307
nHW_FH
+3.3Vd
7
TP281
DG
TP184
J1
NC
TP189
nRESET
TP266
R68
68
C69
0.1u
DG
TP327
TP161
R71
220
TP194
TP313
TP289
NRD
DG
HWCLK0
TP275
5
TP282
C40 120p
TP324
DG
TP297
TP318
IC12
1
1A
2
3Y
3
2A
4
GND
5
2Y
6
3A
7
1Y
8
VCC
R70
68
TP274
C68
0.1u
TP160
DG
TP290
R88
10k
RD
TP323
TP316
CN102
Top side
10
9
8
7
5
4
3
2
1
6
9
8
7
5
4
3
2
1
6
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
31
31
32
32
33
33
34
34
35
35
36
36
37
37
38
38
39
39
40
40
41
41
42
42
43
43
3
TP273
CN101
Botttom side
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
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
31
31
32
32
33
33
34
34
35
35
36
36
37
37
38
38
39
39
40
40
41
41
42
42
43
43
TP441
SLTSEL[0]
IC9
1
A2
2
A1
3
A0
4
5
CLK0/I0
6
NC6
7
8
TCK
9
B0
10
B1
11
B2
12
B3
13
B4
14
B5
15
B6
16
B7
17
VCC17
18
NC18
19
GND19
20
C7
21
C6
22
C5
23
C4
24
C3
25
C2
26
C1
27
C0
28
TMS
29
CLK1/I1
30
NC30
31
GND31
32
TDO
33
D0
34
D1
35
D2
36
D3
37
D4
38
D5
39
D6
40
D7
41
VCC41
42
NC42
43
GND43
44
A7
45
A6
46
A5
47
A4
48
A3
GND7
TDI
6
LA[0]Delay
Highway signal Control
Timing Pulse Generation
()
CPLD
Co-Co Transfer
4MHz
5
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