Panasonic KX-NS5170XSX / KX-NS5170X-SX Service Manual ▷ View online
25
KX-NS5170X/KX-NS5170SX
OK
Replace the IC404.
Caller ID is not detected
by optional equipment.
by optional equipment.
Check soldering of terminal of IC404.
Check soldering of
terminal of IC200A.
terminal of IC200A.
all ports
Does this
occur in a specific
ports or all
ports?
NG
Does The bell
of SLT ring ?
specific ports
NG
Resolder the defective parts.
Go to the flowchart
"The bell of SLTdoes not ringl".
"The bell of SLTdoes not ringl".
Resolder the defective parts.
NG
OK
Replace the IC200A.
OK
END
OK
26
KX-NS5170X/KX-NS5170SX
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 ± 20F (370C ± 10C)
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).
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.
27
KX-NS5170X/KX-NS5170SX
9.2.
Terminal Guide of the ICs Transistors and Diodes
28
KX-NS5170X/KX-NS5170SX
10 Schematic Diagram
10.1. No.1
KX-NS5170X/SX MAIN BOARD No.1 1/2
1
2
C
E
B
A
D
F
3
6
4
2
5
G
H
+40V
R107A
Q101A
+15V
L101A
NC
DG
R110A
10k
L100A
NC
R114A
22k
DTH[0]
C105A
16 1u
U102A
47k
47k
5
3
4
+40V
D100A
ZNR100A
R102A
150k
DTL[0]
DG
DG
U103A
47k
47k
5
3
4
U103A 47k
47k
2
6
1
C104A
PT_CUR[0]
C100A
0.1u 16
ZNR101A
R113A
22k
R127A
2.2k
DG
C101A
1u
10
C103A
1u
10
R108A
100k
R112A
56
+3.3V
U104A
5
3
4
U104A
2
6
1
R125A
1k
DG
DG
R105A
1M
R104A
4.7M
R123A
1.5k
DR[0]
R122A
1.5k
DG
R103A
1M
R120A
910
R109A
10k
DG
R115A 1.5
DG
8.2
U102A
47k
47k
2
6
1
R128A
10k
1
2
3
4
6
7
8
PT_POW[0]
FG
+5V
R101A 0
R121A
910
R124A
1k
R100A 0
DG
Q100A
R116A 22
U101A
U101A
Q102A
T100A
1
2
4
5
6
7
10
9
8
C107A
C106A
R117A
R118A 39
R119A 39
R126A 4.7k
RING_B
RING_A
TIP_A
TIP_B
JK100
8
7
6
5
4
3
2
1
C102A
50 1u
D102A
D101A
U105A
5
3
4
U105A
2
6
1
D103A
C108A
C109A
0.1u 50
R106A
22k
R123B
1.5k
R110B
10k
C103B
1u
10
R125B
1k
R109B
10k
R107B
U105B
5
3
4
DG
R124B
1k
R111B
R104B
4.7M
R102B
150k
L101B
NC
C101B
1u 10
D102B
U104B
5
3
4
C106B
DG
R121B
910
R120B
910
U101B
R126B 4.7k
+40V
ZNR101B
R105B
1M
DG
C107B
D100B
PT_CUR[1]
+15V
U103B 47k
47k
2
6
1
DG
+3.3V
C108B
Q100B
R101B 0
C102B
1u
50
ZNR100B
R103B
1M
C104B
C100B
0.1u 16
T100B
1
2
4
5
6
7
10
9
8
R106B
22k
DG
R115B 1.5
Q102B
U103B
47k
47k
5
3
4
DTH[1]
R127B
2.2k
R112B
56
R128B
10k
1
2
3
4
6
7
8
7
8
DG
+5V
U102B
47k
47k
5
3
4
DG
U104B
2
6
1
R117B
U105B
2
6
1
PT_POW[1]
DR[1]
L100B
NC
C105B
DG
C109B
0.1u 50
DG
R119B 39
DG
R114B
22k
R113B
22k
Q101B
R108B
100k
R100B 0
U102B
47k
47k
2
6
1
R116B 22
FG
U101B
DTL[1]
R122B
1.5k
D101B
R118B 39
U100A
47k
47k
B
E
C
U100B
47k
47k
B
E
C
DG
DG
5
R111A
4.7k
5
4.7k
8.2
560
50 120p
0.1u 50
50 120p 0.1u 50
16 1u
560
16 1u
50 120p
50 120p
16 1u
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