Read Panasonic KX-FT57E Service Manual online
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KX-FT57E
DISASSEMBLY INSTRUCTIONS
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PROCEDURE
1. Temporarily fix the FLAT PACKAGE IC by soldering on the two marked pins.
Check that the IC is set correctly to the soldering foil.
2. Apply flux to all of the pins of the FLAT PACKAGE IC.
3. Solder using the specified solder by sliding the soldering iron in the direction of the arrow.
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BRIDGE MODIFICATION PROCEDURE
1. Slightly re-solder on the bridged portion.
2. Remove the remaining solder along the pins using a soldering iron as shown in the figure below.
Soldering iron
bridge
Specified solder
Flux
Temporary soldering point
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PREPARATION
• SOLDER
Sparkle Solder 115A-1, 115B-1
OR
Almit Solder KR-19, KR-19RMA
• Soldering iron
Recommended power consumption should be between 30 W to 40 W.
Temperature of Copper Rod 662
Temperature of Copper Rod 662
±
50 F
(350
±
10
)
(An expert may handle a 60~80 W iron, but a beginner might
damage the foil by overheating.)
damage the foil by overheating.)
• Flux
HI115 Specific gravity 0.863
(The original flux should be replaced daily.)
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HOW TO REPLACE THE FLAT PACKAGE IC
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