Panasonic KX-NS0131X Service Manual ▷ View online
17
KX-NS0131X
18
KX-NS0131X
8 Miscellaneous
8.1.
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.
8.1.1.
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.4).
8.1.2.
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
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.
8.1.3.
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.
8.1.4.
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.
19
KX-NS0131X
8.2.
Terminal Guide of the ICs Transistors and Diodes
20
KX-NS0131X
9 Schematic Diagram
9.1.
Main Board
9.1.1.
No.1
(1)
(2)
(3)
(4)
(5)
(6)
+
-
+
-
G
R
D
F
E
C
B
A
H
G
4
6
3
5
2
LA[1]
A[17]
A[18]
A[19]
A[20]
LA[16]
LA[15]
LA[14]
LA[13]
LA[15]
LA[14]
LA[13]
LA[12]
LA[11]
LA[10]
LA[9]
LA[8]
LA[11]
LA[10]
LA[9]
LA[8]
LA[7]
LA[6]
LA[6]
LA[5]
LA[4]
LA[3]
LA[2]
LA[4]
LA[3]
LA[2]
LD[0]
LD[1]
LD[2]
LD[3]
LD[4]
LD[5]
LD[6]
LD[7]
LD[8]
LD[9]
LD[10]
LD[11]
LD[12]
LD[13]
LD[14]
LD[15]
nBS
CKIO_NEXUS
A[0]
CPU_nRESET
nLEDALM
nLEDRUN
nLEDRUN
MASTER/nS
M/nS
POWTYPE[1]
POWTYPE[0]
M/nS
POWTYPE[1]
POWTYPE[0]
HALT
IC101
RX7
32
SDI
115
SDO
116
RTS
117
CTS
118
ADD20
119
ADD19
120
ADD18
121
ADD17
122
RX1
38
RX2
37
RX3
36
RX4
35
RX5
34
RX6
33
RX0
39
ADD16
123
ADD15
125
ADD14
126
ADD13
127
ADD12
128
ADD11
129
ADD10
130
ADD9
131
ADD8
132
ADD7
135
ADD6
136
ADD5
137
ADD4
138
ADD3
139
ADD2
140
ADD1
141
ADD0
142
DATA15
144
DATA14
145
DATA13
146
DATA12
147
DATA11
148
DATA10
149
DATA9
150
DATA8
151
DATA7
154
DATA6
155
DATA5
156
DATA4
157
DATA3
158
DATA2
159
DATA1
160
DATA0
161
*EXT_INT2
163
*EXT_INT1
164
*EXT_INT0
165
*IRQ
166
*BREQ
167
*BACK
168
*CS_SRAM
169
*CS_MES
170
*RD
173
*WR1
174
*WR0
175
*BUSY
176
*RESET
177
*BS
178
CLKIO
179
HW_CLK0
182
HW_CLK1
183
HW_FH
184
LUHW0
185
LDHW0
186
LUHW1
187
LDHW1
188
L_NETREF
189
SHW_CLK
192
SHW_FH
193
PIO7
194
PIO6
195
PIO5
196
PIO4
197
PIO3
198
PIO2
199
PIO1
200
PIO0
201
P07
213
P06
214
P05
215
P04
216
P03
217
P02
218
P01
219
P00
220
P17
222
P16
223
P15
224
P14
225
P13
226
P12
227
P11
228
P10
229
P27
232
P26
233
P25
234
P24
235
P23
236
P22
237
P21
238
P20
239
P37
2
P36
3
P35
4
P34
5
P33
6
P32
7
P31
8
P30
9
C_CS3
203
C_CS2
204
C_CS1
205
C_CS0
206
DCLK
207
DOUT
208
DIN
209
CP0
210
R122
10k
+3.3V
R124
10k
NC
+3.3V
R125 10k
R126 10k
+3.3V
R114
10k
R116
10k
+3.3V+3.3V
SHW_CLK
005:7D;004:2D
SHW_nFH
005:7D;004:2D
DG
R118
680
+3.3V
nWAIT_NEXUS
004:2E
L_nWE0
003:7H;003:8D;004:7D
R110 10k
CKIO_NEXUS
002:5G;004:2D
nBS
002:5F
nPWRST
002:11H;003:7G
L_nWE1
003:7G;003:8D
nRD/nCAS
002:5F;003:2F;003:7D;004:7D
nCS5
002:5F;003:3D;004:2F
nCS4
002:5F;003:3D;003:7G
R111
33
R113
33
R115
33
R106
0
nIRQ_ASIC
002:11E
nBREQ
002:5G
IC112
9
A
8
Y
R104
33
CPU_nRESET
002:11H;003:7G;004:2F
R105
33
nBACK_NEXUS
003:3E
R101
33
nBACK
002:5G
IC210
13
A
12
Y
LD[8-15]
003:11B;005:11C
LA[13-16]
003:11A
A[17-20]
002:2A;003:1A
R120 10k
+3.3V
DG
R1030
10k
1
2
3
4
5
6
7
8
6
7
8
R1040 10k
1
2
3
4
5
6
7
8
6
7
8
R1050
10k
1
2
3
45
6
7
8
R1080
10k
1
2
3
45
6
7
8
+3.3V
DG
R1060
10k
1
2
3
4
5
6
7
8
6
7
8
+3.3V
R1020
10k
1
2 3
45
6
7
8
+3.3V
R1070
10k
1
2
3
4
5
6
7
8
6
7
8
+3.3V
R119
10k
R117 10k
+3.3V
Q1020
1
2
3
2
3
4
5
+3.3V
Q102
+3.3V
R102
150
R103 150
DG
R1010
10k
1
2
3
45
6
7
8
+3.3V
R107
10k
DG
FG
R109 10k
+3.3V
J105NC
J106NC
J107NC
J108NC
J109NC
J110NC
J111NC
J112NC
J106NC
J107NC
J108NC
J109NC
J110NC
J111NC
J112NC
nBSRSTOUT
002:12B;005:11F;004:2D
+3.3V
R185
10k
FPGA_INT
004:7E
DG_2
R108
NC
DG
TP101
TP104
TP102
TP105
TP103
IC113
7
GND
14
VCC
IC113
6
*Q
5
Q
2 D
4 *PRE
3
1 *CLR
DG
C151
0.01u
16
+3.3V
IC113
8
*Q
9
Q
12 D
10 *PRE
11
13 *CLR
DG
+3.3V
+1.5V
DG
C716
0.1u50
@Doub
1608
+1.2V
C785
10u
10
C738
0.1u
50
C783
10u
10
C746
1u
10
L701
4.7u
DG
DG
DG
IC703
1
ON/OFF
2
VSS
4 VIN
5
VOUT
3
NC
+3.3V
FIL702
1
2
3
1.2V
1.5V
C713
NC
3.3V_BB
DG
DG
C747
10u
10
+3.3V
C718
22u
6.3V
R717
10k
C740
10u
25
C749
10u
10
C748
10u
10
DG
IC706
1
NC
3
CE
5
VOUT
4
VDD
2
GND
L704
+3.3V_BB
DG
C784
0.1u
50
C776
10u
10
DG
R711
10k
IC705
4
GND
8
VCC
DG
R713
10k
C787
0.
1u
5
0
IC705
5
6
7
DG
+3.3V
3.3V
C755
NC
C759
NC
C715
NC
C750
NC
C705
NC
C771
NC
C729
NC
+3.3V
DG
C724
NC
C763
NC
C753
NC
C720
NC
C739
NC
C752
NC
C721
NC
C737
NC
C719
NC
C703
NC
C730
NC
C772
NC
C765
NC
C756
NC
C758
NC
+3.3V
C710
NC
C735
NC
C767
NC
C731
NC
C768
NC
C770
NC
C769
NC
C717
NC
C732
NC
C707
NC
C723
NC
C741
NC
+3.3V
C757
NC
C762
NC
C734
NC
C701
NC
C764
NC
C733
NC
DG
C722
NC
C760
NC
C725
NC
C751
NC
C727
NC
C726
NC
C736
NC
C712
NC
C766
NC
C742
NC
C754
NC
C761
NC
DG
R707
1k
3.3VB
BAT701+
J702
R710
10k
DG
IC705
3
2
1
DG
R709
2.2k
DG
D705
BAT701
1
2
3
+3.3VB
+3.3V
R714
10M
0.1
1608
D705C
R712
10k
nBAT_ALM
002:10B
R715
4.7k
+3.3V
D705A
D703
D704
R708
10M
A[0]
002:2A;004:7D
LD[0-7]
003:11C;005:11C;004:7D
LA[6-7]
003:11A;004:2B
LA[8-12]
003:11A;004:2B
LA[1-5]
003:11A;005:11C;004:2B
J131
NC
J132
NC
C786
0.01u
16
FG
IC701
8
PGND1
9
PGND2
10
SW1
11
SW2
12
VBST
13
VIN
14
VCC
15
PGND3
BAT_ALM
FIL102
1
2
3
DG
FIL105
1
2
3
DG
J102 0
J104
0
J142
0
J141 0
DG
DG
C121 100p 50
C122 100p 50
C110 100p 50
R186
390
NC
R188
390
NC
R187
390
NC
R189
390
NC
R192
390
NC
R193
390
NC
R190
390
NC
R191
390
NC
DG
NC
1
2
2
D101
3
4
1
2
+15V TO +3.3V
+3.3V TO +1.2V
+3.3V TO +1.5V
KX-NS0131X No.1 1/2
Incase of power off 2.8V-3.2V
2
Normal:3.3V
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