Panasonic KX-TC1801B Service Manual ▷ View online
15 CPU DATA (Handset)
15.1. IC201
37
KX-TC1801B
16 EXPLANATION OF IC TERMINALS (RF Unit)
16.1. IC101
38
KX-TC1801B
17 HOW TO REPLACE FLAT
PACKAGE IC
17.1. 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.)
17.2. 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.
17.3. 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.
39
KX-TC1801B
18 TERMINAL GUIDE OF IC´S, TRANSISTORS AND DIODES
18.1. Base Unit
18.2. Handset
40
KX-TC1801B
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