Panasonic KX-TS2388RUB / KX-TS2388RUW / KX-TS2388CAB / KX-TS2388CAW / KX-TS2388UAB / KX-TS2388UAW Service Manual ▷ View online
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KX-TS2388RUB/KX-TS2388RUW/KX-TS2388CAB/KX-TS2388CAW/KX-TS2388UAB/KX-TS2388UAW
10.2. How to Replace the 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
soldering iron and a cutter knife, you can easily remove the ICs that have more than 100 pins.
soldering iron and a cutter knife, you can easily remove the ICs that have more than 100 pins.
10.2.1. Preperation
• 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 someone with
less experience could overheat and damage the PCB foil.
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).
10.2.2. How to Remove the IC
1. Put plenty of solder on the IC pins so that the pins can be completely covered.
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.
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.
at the joint on the board, the new IC will not be attached properly.
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KX-TS2388RUB/KX-TS2388RUW/KX-TS2388CAB/KX-TS2388CAW/KX-TS2388UAB/KX-TS2388UAW
10.2.3. How to Install the IC
1. Temporarily fix the FLAT PACKAGE IC, soldering the two marked pins.
*Check the accuracy of the IC setting with the corresponding soldering foil.
2. Apply flux to all pins of the FLAT PACKAGE IC.
3. Solder the pins, sliding the soldering iron in the direction of the arrow.
10.2.4. How to Remove a Solder Bridge
1. Lightly resolder the bridged portion.
2. Remove the remaining solder along the pins using a soldering iron as shown in the figure below.
2. Remove the remaining solder along the pins using a soldering iron as shown in the figure below.
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KX-TS2388RUB/KX-TS2388RUW/KX-TS2388CAB/KX-TS2388CAW/KX-TS2388UAB/KX-TS2388UAW
10.3. Terminal Guide of the ICs, Transistors and Diodes
E
C
B
Cathode
Anode
MA4180
Cathode
Anode
PSVD1SRCT
B0EDER000009
UNR5213J0L, B1ABDF000026, PQVTDTC144TU,
PQVTBF822T7, B1GBJCFJ0003,B1GBJCJJ0003,
UNR5113J0L,2SD1819KSL,2SB1218KSL
8
5
4
1
C1CB00002903, C0ABBA000025,
PQVINJU7014R, PNWITS2388RU,
PNWITS2388CA, PNWITS2388UA
PQVINJU7014R, PNWITS2388RU,
PNWITS2388CA, PNWITS2388UA
MA111,
MA728
MA728
Cathode
Anode
B1AAKD000013
1
3
5
4
PQVIPS3238NT,
C0DBZGC00067
C0DBZGC00067
1
3
2
4
PQVIPS3327UT
C2CBYY000895
97
128
1
32
33
64
65
96
C1CB00001673
1
14
15
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E
C
B
Cathode
Anode
MA4051
Cathode
Anode
B0JCME000038
1
8
16
9
C0ZBZ0001747
E
C
B
2SA1776P
Cathode
Anode
1SS133
2
1
3
5
PQVTFMG2T148
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KX-TS2388RUB/KX-TS2388RUW/KX-TS2388CAB/KX-TS2388CAW/KX-TS2388UAB/KX-TS2388UAW
11 Schematic Diagram
11.1. For Schematic Diagram
1. DC voltage measurements are takens with electronic voltmeter from negative terminal.
2. This schematic diagram may be modified at any time with the development of new technology.
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