How To Replace A Flat Package Ic - Panasonic KX-TSC10HGW Service Manual

SCK terminal is input terminal of Serial Clock to control transmit
and receipt between Master and Slave.
2. SDA
SDA terminal is input terminal, to forward the address and the
mutual data between Master Device and Slave Device the mutual.
This terminal needs the pull-up resistance external because
output circuit of SDA uses Open Drain.
3. A0, A1, A2
A0, A1, and A2 terminal is not used.
4. WP
WP terminal controls writing action. It is possible to do only
reading action when high level input and it is possible to do
reading and writing action when low level input.

13. HOW TO REPLACE A FLAT PACKAGE IC

13.1. Preparation
- SOLDER
Sparkle Solder 115A-1, 115B-1 or Almit Solder KR-19, KR-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.)
- Flux
HI115 Specific gravity 0.863.
(Original flux will be replaced daily.)
13.2. Procedure
1. Tack the flat pack IC to the PCB by temporarily soldering two
diagonally opposite pins in the correct positions on the PCB.
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