Panasonic KX-TC1868B / KX-TC1871B / KX-TC1872B Service Manual ▷ View online
19 HOW TO REPLACE FLAT
PACKAGE IC
19.1. Preparation
•
SOLDER
Sparkle Solder 115A-1, 115B-1 or Almit Solder KR-19, KR-
19RMA
19RMA
•
Soldering iron
Recommended power consumption will be between 30 W
to 40 W.
Temperature of Copper Rod 662 ± 50°F (350 ± 10°C)
(An expert may handle between 60 W to 80 W iron, but
beginner might damage foil by overheating.)
to 40 W.
Temperature of Copper Rod 662 ± 50°F (350 ± 10°C)
(An expert may handle between 60 W to 80 W iron, but
beginner might damage foil by overheating.)
•
Flux
HI115 Specific gravity 0.863
(Original flux will be replaced daily.)
HI115 Specific gravity 0.863
(Original flux will be replaced daily.)
19.2. Procedure
1. Temporary fix FLAT PACKAGE IC by soldering on two
marked 2 pins.
*Most important matter is accurate setting of
IC to the corresponding soldering foil.
IC to the corresponding soldering foil.
2. Apply flux for all pins of FLAT PACKAGE IC.
3. Solder employing specified solder to direction of arrow, as
sliding the soldering iron.
19.3. Modification Procedure of
Bridge
1. Re-solder slightly on bridged portion.
2. Remove remained solder along pins employing soldering
iron as shown in below figure.
65
KX-TC1868B / KX-TC1871B / KX-TC1872B
20 CABINET AND ELECTRICAL PARTS (Base Unit)
66
KX-TC1868B / KX-TC1871B / KX-TC1872B
21 CABINET AND ELECTRICAL PARTS (Handset)
67
KX-TC1868B / KX-TC1871B / KX-TC1872B
22 ACCESSORIES AND PACKING MATERIALS
68
KX-TC1868B / KX-TC1871B / KX-TC1872B
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