Panasonic KX-NS0154CE (serv.man2) Service Manual ▷ View online
25
KX-NS0154CE
12.3. How to Replace the LLP (Leadless Leadframe Package) IC and IC
ground plate
12.3.1.
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 someone with less
experience could overheat and damage the PCB foil.
Note:
We recommend a 30 to 40 Watt soldering iron. An expert may be able to use a 60 to 80 Watt iron where someone with less
experience could overheat and damage the PCB foil.
• Hot Air Desoldering Tool
Temperature: 608 F ± 68 F (320 C ± 20 C)
12.3.2.
Caution
• To replace the IC efficiently, choose the right sized nozzle of the hot air desoldering tool that matches the IC package.
• Be careful about the temperature of the hot air desoldering tool not to damage the PCB and/or IC.
• Be careful about the temperature of the hot air desoldering tool not to damage the PCB and/or IC.
12.3.3.
How to Remove the IC
1. Heat the IC with a hot air desoldering tool through the
P.C.Board.
2. Pick up the IC with tweezers, etc. when the solder is
melted completely.
Note:
Note:
• Be careful not to touch the peripheral parts with twee-
zers, etc. They are unstable.
3. After removing the IC, clean the P.C.Board of residual sol-
der.
12.3.4.
How to Install the IC
1. Place the solder a little on the land where the radiation
GND pad on IC bottom is to be attached.
2. Place the solder a little on the land where IC pins are to
be attached, then place the IC.
Note:
Note:
• When placing the IC, the positioning should be done very
carefully.
3. Heat the IC with a hot air desoldering tool through the
P.C.Board until the solder on IC bottom is melted.
Note:
Note:
• Be sure to place it precisely, controlling the air volume of
the hot air desoldering tool.
4. After soldering, confirm there are no short and open cir-
cuits with visual inspection.
26
KX-NS0154CE
12.3.5.
How to Remove a Solder Bridge (Doesn't apply to IC ground plate.)
When a Solder Bridge is found after soldering the bottom of the IC, remove it with a soldering iron.
27
KX-NS0154CE
13 Schematic Diagram
13.1. Main Board
13.1.1.
No.1
C
E
B
A
D
F
3
2
4
6
5
8
7
A
B
C
D
E
F
DDR_D
Q
0
DDR_D
Q
1
DDR_D
Q2
DDR_D
Q
3
DDR_D
Q
4
DDR_D
Q
5
DDR_D
Q6
DDR_D
Q7
DDR_D
Q
8
DDR_D
Q
9
DDR_D
Q
10
DDR_D
Q
11
DDR_D
Q
12
DDR_D
Q
13
DDR_D
Q
14
DDR_D
Q
15
DDR_D
Q
0
DDR_D
Q
1
DDR_D
Q2
DDR_D
Q
3
DDR_D
Q
4
DDR_D
Q
5
DDR_D
Q6
DDR_D
Q7
DDR_D
Q
8
DDR_D
Q
9
DDR_D
Q
10
DDR_D
Q
11
DDR_D
Q
12
DDR_D
Q
13
DDR_D
Q
14
DDR_D
Q
15
DDR_D
A0
DDR_D
A1
DDR_D
A2
DDR_D
A3
DDR_D
A4
DDR_D
A5
DDR_D
A6
DDR_D
A7
DDR_D
A8
DDR_D
A9
DDR_D
A10
DDR_D
A11
DDR_D
A1
2
DDR_WE
DDR_B
A0
DDR_B
A1
DDR_C
S0
DDR_C
S0
DDR_WE DDR_R
AS
DDR_C
AS
DDR_R
AS
DDR_C
AS
DDR_B
A0
DDR_B
A1
DDR_D
A0
DDR_D
A1
DDR_D
A2
DDR_D
A3
DDR_D
A4
DDR_D
A5
DDR_D
A6
DDR_D
A7
DDR_D
A8
DDR_D
A9
DDR_D
A10
DDR_D
A11
DDR_D
A1
2
DDR_CKE
DDR_CKE
DDR_LDM
DDR_UDM
DDR_UDM
DDR_CK DDR_CK
DDR_ODT
DDR_ODT
DDR_B
A2
DDR_B
A2
NFLD0 NFLD1 NFLD
2
NFLD3 NFLD4 NFLD5 NFLD
6
NFLD
7
NFLD
6
NFLD5 NFLD4
NFLD3 NFLD
2
NFLD1 NFLD0
NFLD
7
NFLC
S0
NFL
ALE
NFLCLE NFLRD NFLWR
NFLC
S0
NFLCLE NFL
ALE
NFLWR
NFLRD
NFLRE
AD
Y
DDR_CK
DDR_CK
DDR_LD
QS
DDR_LD
QS
DDR_UD
QS
DDR_UD
QS
DDR_LDM DDR_LD
QS
DDR_LD
QS
DDR_UD
QS
DDR_UD
QS
NFLRE
AD
Y
R10
7
0
R108
0
R109
NC
R110
NC
C118 0.1u
C10
2
0.1u
C103
0.1u
C104
0.1u
C105
0.1u
C10
6
0.1u
C10
7
0.1u
C108
0.1u
C109
0.1u
C110
0.1u
C111
0.1u
C11
2
0.1u
C113
0.1u
C114
0.1u
C115
0.1u
C11
6
0.1u
DG
DG
DG
DG
R104
1k
1
2
3
4
C1
27
0.1u
C1
26
0.1u
C1
25
0.1u
C1
24
0.1u
C1
23
0.1u
C1
22
0.1u
C1
21
0.1u
C1
20
0.1u
C119
0.1u
DG
1.8
V
L101
C101
0.1u
DG
R134
33
R133
33
R13
2
33
R131
33
R130
33
R1
293
3
R1
283
3
R1
27
33
R11
6
33
R11
7
33
R118
33
R119
33
R1
203
3
R1
213
3
R1
22
33
R1
233
3
R111
33
R11
2
33
R113
33
R114
33
R115
33
DG
DG
3.3
V
R13
7
0
NFL_
VDD
NFL_
V
DD
NFL_
VDD
C13
2
0.1u
C131
0.1u
C130
0.1u
C1
29
NFL_
VDD
C1
28
0.1u
DG
VDD_DDR
VDD_DDR
C11
7
0.1u
R101
NC
R103
NC
R10
2
NC
R10
6
NC
R105
NC
PH
Y_R
ST
003
Timer
003
003
DC
X1_R
ST
004
DC
X2
_R
ST
004
D10
2
Q
101
Q
10
2
Q
103
3.3
V
DG
DG
R1
241
k
R1
25
8.
2k
V
DD_DDR
IC101
V
DDL
J1
VSS
DL
J7
R1
V
DD5
P9
VSS
5
M9
V
DD4
N1
VSS
4
J9
V
DD3
J3
VSS
3
E1
V
DD
2
E3
VSS2
B
2
VSSQ2
C9
V
DD
Q
5
A7
VSSQ
1
A
0
M8
A
1
M3
C
7
V
DD
Q
4
A
1
V
DD1
A
3
VSS
1
A
9
V
DD
Q
1
C1
V
DD
Q2
E9
V
DD
Q6
G1
V
DD
Q7
C3
V
DD
Q
3
G3
V
DD
Q
8
G
7
V
DD
Q
9
G9
V
DD
Q
10
J2
V
REF
A2
M
7
A
3
N
2
D
Q
1
G
2
D
Q
0
G8
A
4
N8
A
5
N3
D
Q
3
H3
D
Q2
H
7
A6
N
7
A7
P
2
D
Q
5
H9
D
Q
4
H1
A
8
P8
A
9
P3
D
Q7
F9
D
Q6
F1
A
10/
A
P
M
2
A
11
P
7
D
Q
9
C
2
D
Q
8
C8
A
1
2
R
2
NC5
R8
D
Q
11
D3
D
Q
10
D
7
NC3
R3
NC4
R
7
D
Q
13
D9
D
Q
1
2
D1
B
A
0
L
2
B
A
1
L3
D
Q
15
B9
D
Q
14
B1
B
A2
L1
*R
AS
K
7
*LD
QS
E8
LD
QS
F
7
*C
AS
L
7
*WE
K3
*UD
QS
A
8
UD
QS
B
7
LDM
F3
UDM
B3
NC
2
E
2
NC1
A2
ODT
K9
*C
S
L8
CKE
K
2
CK
J8
B8
VSSQ
3
D
2
VSSQ
4
D8
VSSQ
5
E
7
VSSQ6
F
2
VSSQ7
F8
VSSQ
8
H
2
VSSQ
9
H8
VSSQ
10
*CK
K8
IC10
2
1
NC1
2
NC
2
4
6
NC
27
4
7
NC
28
3
NC3
48
NC
29
4
NC4
45
NC
26
5
NC5
44
I/O
7
6
NC
6
43
I/O
6
7
R/*B
4
2
I/O5
8
*RE
41
I/O4
9
*CE
40
NC
25
10
NC
7
39
NC
24
11
NC8
38
NC
23
1
2
VCC1
3
7
VCC
2
13
VSS
1
3
6
VSS2
14
NC9
35
NC
22
15
NC10
34
NC
21
1
6
CLE
33
NC
20
1
7
ALE
3
2
I/O3
18
*WE
31
I/O
2
19
*WP
30
I/O1
2
0
NC11
2
9
I/O0
2
1
NC1
2
2
8
NC19
22
NC13
27
NC18
2
3
NC14
26
NC1
7
2
4
NC15
2
5
NC1
6
R139 4.
7k
SW101
2
13
4
5
D104
DG
DG
POEOUT
R141 5
6
IC100
D9
*DDRR
ST
C10
DDRC
S0
L4
MEM
XD
2/LCDD4
M1
MEM
XD1/LCDD3
B11
DDRC
S1
M4
MEM
XD0/LCDD
2
A
14
*DDRWE
L1
MEM
XD3/LCDD5
B13
*DDRR
AS
M
2
MEM
XD4/LCDD
6
B1
2
*DDRC
AS
K
2
MEM
XD5/LCDD
7
D11
DDRB
A0
B14
DDRB
A1
K1
MEM
XD
6/LCDD10
C13
DDRB
A2
J2
MEM
XD
7/LCDD11
B15
DDR
A0
H1
MEM
XD8/LCDD1
2
C1
2
DDR
A1
J1
MEM
XD9/LCDD13
C14
DDR
A2
K3
MEM
XD10/LCDD14
B1
6
DDR
A3
K4
MEM
XD11/LCDD15
D13
DDR
A4
N1
MEM
XD1
2/LCDD18
C15
DDR
A5
L
2
MEM
XD13/LCDD19
B1
7
DDR
A6
L3
MEM
XD14/LCDD
20
A
19
DDR
A7
M3
MEM
XD15/LCDD
21
C1
6
DDR
A8
D14
DDR
A9
B18
DDR
A10
D15
DDR
A11
C1
7
DDR
A1
2
D1
6
DDR
A13
B19
DDR
A14
D10
DDRCKE
A
13
DDRCKELP
A
1
7
DDRCLK0
A
18
DDRCLK0_N
A
15
DDRCLK1
A
1
6
DDRCLK1_N
A7
DDRD
Q
0
B
7
DDRD
Q
1
B8
DDRD
Q2
C8
DDRD
Q
3
B9
DDRD
Q
4
A
10
DDRD
Q
5
C9
DDRD
Q6
B10
DDRD
Q7
D8
DDRDM0
A
9
DDRD
QS
0
A
8
DDRD
QS
0_N
B4
DDRD
Q
8
D5
DDRD
Q
9
C5
DDRD
Q
10
B5
DDRD
Q
11
C
6
DDRD
Q
12
D
6
DDRD
Q
13
C
7
DDRD
Q
14
D
7
DDRD
Q
15
B
6
DDRDM1
A6
DDRD
QS
1
A
5
DDRD
QS
1_N
E1
6
DDRP
ADHI
E14
DDRP
ADLO
C4
DDR_RTT
A
1
2
DDRODT0
C11
DDRODT1
C18
DDR_REF0
A
11
DDR_REF1
A
4
DDR_REF
2
E
7
VDDIO_DDR1
E10
VDDIO_DDR
2
F5
VDDIO_DDR3
F
6
VDDIO_DDR4
F
7
VDDIO_DDR5
F8
VDDIO_DDR
6
F9
VDDIO_DDR
7
F10
VDDIO_DDR8
G11
VDDIO_DDR9
N8
VDDIO_NFL
QS
PI
R
6
NFLD
7/MEM
XA2
1
W
6
NFLD
6/
Q
C
S1
T
7
NFLD5/
Q
C
S0
T
6
NFLD4/
Q
D
Q
3
V
4
NFLD3/
Q
D
Q2
V6
NFLD
2/
Q
D
Q
1
U
6
NFLD1/
Q
D
Q
0
W5
NFLD0/
Q
CLK
R5
NFLRE
AD
Y1/MEM
XA22
U5
NFLWR/MEM
XA2
3
T4
NFLRD/MEM
XA2
4
V
5
NFLCLE/MEM
XA2
5
U4
NFL
ALE/MEM
XA
17
T5
NFLC
S0/MEM
XA
18
H4
MEMC
S3/E
XTINT
7
H3
MEMC
S2
/E
XTINT
6
G4
MEMC
S1/LPCLK
G3
MEMC
S0/LCDD0
E4
MEMRD
J4
MEMWR
E1
MEM
XA2
0_MEMR
AS
/LCDD1
6
F
2
MEM
XA
19_MEMC
AS
/LCDD9
F1
MEMCKE/E
XTINT13
G1
MEMCLK
D4
MEM
XA
16
F4
MEM
XA
15
D3
MEM
XA
14_B
A1/LCDD8
D1
MEM
XA
13_B
A0/LCDD1
G
2
MEM
XA
12
/E
XTINT14
F3
MEM
XA
11/LCDGP8
C
2
MEM
XA
10/LCDGP
7
E
2
MEM
XA
9/LCDGP
6
E3
MEM
XA
8/LCDGP5
D
2
MEM
XA7
/LCDGP4
C1
MEM
XA6
/LCDGP3
C3
MEM
XA
5/LCDGP
2
B
2
MEM
XA
4/LCDGP1
A
3
MEM
XA
3/LCDGP0
A2
MEM
XA2
/E
XTINT4
B3
MEM
XA
1/LCDD
23
B1
MEM
XA
0/LCDD
22
H
2
MEMD
Q
MBL
S0/LCDD1
7
J3
MEMD
Q
MBL
S1/E
XTINT5
LINK
001
001
D101
Q
104
1E1
2
B1
3C
2
4
E2
5
B2
6
C1
R15
2
68
R151
68
R153
300
DG
VDD_DDR
R140 5
6k
R1
26
68
R135 12
0
3.3
V
R154 4.
7k
0.1u
K
X
-N
S
0154CE M
ain Bo
ard No.1
(7
)
(6
)-
2
(6
)-
2
(6
)-1
(6
)-1
(7
)
28
KX-NS0154CE
13.1.2.
No.2
C
E
B
A
D
F
3
2
4
6
5
8
7
A
B
C
D
E
F
X2
01
1
2
4
3
R
209
1M
DG
DG
DG
DG
DG
L2
03
L2
04
L2
05
L2
06
L2
07
L2
08
C
20
6
0.1u
C
20
7
0.1u
C
208
0.1u
C
209
0.1u
C
210
0.1u
C
211
0.1u
C
21
2
0.1u
C
213
0.1u
C
214
0.1u
C
215
0.1u
C
21
6
0.1u
C
21
7
0.1u
C
218
0.1u
C
219
0.1u
C
22
0
0.1u
C
22
1
0.1u
DG
1.
2V
DD
3.3
V
3.3
V
L2
10
C
205
0.1u
R
203
10k
R
20
6
0
C
204
NC
3.3
V
L2
11
C
239
0.1u
DG
TDMB_DT
X
004
TDMB_F
SY
NC
004
TDMB_DR
X
004
TDMB_
SCLK
004
C
234
1u
C22
4
0.1u
C
231
1u
R
20
7
0
L2
09
NC
C
235
22
u
IF_CLK_IF
003
R
205
100
C
203
1000p
1.
2V
DD
3.3
V
L2
02
C
23
2
0.1u
C
222
0.1u
DG
R
201
47
k R
20
2
1k
DG
3.3
V
C
201
1000p
DG
C
22
5
0.1u
C
226
0.1u
C
227
0.1u
C
22
8
0.1u
C
230
0.1u
C
22
9
0.1u
1.
2V
DD
3.3
V
DG
R
204
NC
DG
1.8
V_
APU
R
STN
IC
201
1
VSS
2
VDD
3
CD
4
OUT
DG
IC100
U1
6
V
CC5
V
_DCL
S
0
U1
7
V
CC5
V
_DCL
S
1
T15
S
INK_DCL
S
0
T1
6
S
INK_DCL
S
1
V
1
6
V
CC33
S
W_DCL
S
W1
7
V
DD
S
W_DCL
S
R15
V
DD1
2
_DCL
S
U15
V
DD18_DCL
S
V
19
P
A
OUTP
V
18
P
A
OUTN
M18
DIFFIN0P
M1
7
DIFFIN0N
P15
MICPWR0
P1
6
S
INGIN1
N15
S
INGIN0
N14
MICPWR1
L19
DIFFIN1P
M19
DIFFIN1N
K18
A
MPOUT0
K19
A
MPOUT1
L1
7
A
MPOUT
2
L18
A
MPOUT3
M15
V
CC_
A
MP_OUT
M1
6
GND_
A
MP_OUT
R13
FORCEMUTE
T1
7
TP
X
1
P13
TP
X2
R18
TP
Y
1
T18
TP
Y2
P18
TP
S
V
1
2
R
S
TN
T1
2
TE
S
T_
A
N
A
L1
6
IF_CLK_IF
P14
V
REF
D1
2
V
DD0
E5
V
DD1
E
6
V
DD
2
E8
V
DD3
H5
V
DD4
K13
V
DD5
K5
V
DD
6
M10
V
DD
7
M8
V
DD8
N1
2
V
DD9
G5
V
DDIO0
H
6
V
DDIO1
J5
V
DDIO
2
K1
2
V
DDIO3
L
6
V
DDIO4
J6
GND10
H8
GND9
L
7
GND8
K11
GND
7
H11
GND
6
K8
GND5
J8
GND4
J11
GND3
H10
GND
2
J9
GND1
G13
PLL3_D
V
DD
H13
PLL3_
AVSS
L13
PLL3_
AV
DD
E11
PLL
2
_D
V
DD
G1
2
PLL
2
_
AVSS
F11
PLL
2
_
AV
DD
N10
V
DDIO5
M13
V
DDIO_
A
PU
N9
V
DDIOC
J7
GND35
G10
GND33
H1
2
GND34
G8GND3
2
G6
GND30
K6
GND2
9
E9GND
2
8
L8
GND27
J
10
GND26
L12
GND2
5
G9GND
2
4
M12
GND2
3
G7
GND22
K7
GND2
1
M9GND
2
0
K9GND19
L11
GND18
M11GND1
7
A
1GND1
6
L10
GND15
L9
GND14
H9GND13
H7
GND12
K10
GND11
E13
PLL1_D
V
DD
F1
2
PLL1_
AVSS
F13
PLL1_
AV
DD
U14
V
CC5
V
_DCDC
W15
DCDC_
V
RP
T14
DCDC_
VS
EN
S
V
14
COIL_DCDC
W14
S
INK_DCDC
W13
GND_DCDC
V
15
V
DD18_DCDC
W1
6
V
CC33_DCDC
N13
V
DD_
A
N
A
V
1
7
V
CC_
A
N
A
0
W1
2
V
CC_
A
N
A
1
N1
6
V
CC
A
T13
E
X
T_REG_CTL
U13
PWM0
V
13
LED
S
INK1_PWM1
R14
LED
S
INK
2
R19
DCIN0
U19
DCIN1
P1
7
DCIN
2
W19
DCIN3
U1
2
DCIN
S
T19
GNDI
N1
7
GND
A
R1
6
VSS
1
R1
7
VSS2
U18
VSS
3
W18
VSS
4
N18
X
I13M
P19
X
O13M
N19
BCLK
IC100
G18
RF_R
A
DIO_EN/E
X
TINT9
J1
7
RF_
S
CLK/
S
D_D
2
K1
7
IF_D
A
T
A
_D
A
H1
7
RF_
S
D
A
T
A
_IN/
S
D_D3
L15
IF_D
A
T
A
_
A
D
J18
RF_
S
D
A
T
A
_OUT/
S
D_D1
L14
IF_EN_
A
D
J1
6
RF_
S
EN/
S
D_WR_PROT
J19
IF_EN_D
A
H19
RF_
S
LOT_CTRL/
S
D_DETECT
K14
IF_INT_
A
N
A
H18
RF_TR_D
A
T
A
/E
X
TINT10
G1
7
E
X
TINT15/
SY
NCPORT
K15
IF_ML
S
E
K1
6
IF_N
A
RE
S
J15
IF_R
X
1
J14
IF_T_D
A
T
A
M14
V
DDIO_RFA
PU
1.8
V_
APU
C
22
3
0.1u
D
VF_T
XRE
Q
1
004
DC
X2
_T
XRE
Q
004
DC
X1_RE
AD
Y
004
DC
X2
_BOOT
004
D
VF_RE
AD
Y1
004
D
VF_T
XRE
Q2
004
DC
X1_T
XRE
Q
004
D
VF_RE
AD
Y2
004
DC
X1_BOOT
004
R
73
2
33
R
731
33
R
730
33
C
240
47
00p
C
20
2
0.01u
PDN
005
L2
01
0
R
211
0
C
23
7
5p
C
238
5p
XO13M
00
2
XO13M
00
2
K
X
-N
S
0154CE M
ain Bo
ard No.
2
(1)
(2
)
(18)
(18)
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