Inserting The Pc Card (Pc Card Adaptor); Unleaded Solder - Sony SNC-Z20N Service Manual

4 4 I/O port 4 4 4
10 9 8 7 6 5 4 3 2 1
Pin No. Signal name
1 Sensor input 1 _
2 NC
Alarm output 1 _
3
Alarm output 1 +
4
5 Alarm output 2 _
6 Alarm output 2 +
7 Earth (GND)
8 Earth (GND)(RS-232C)
9 RXD (RS-232C)
10 TXD (RS-232C)
1-8. Inserting the PC Card (PC Card
Adaptor)
1. Remove the cover in the direction shown by the arrow.
2. Insert it fully with the (
card (PC card adaptor) down.
Cover
PC card adaptor
Put the PC card with the
SNC-Z20N/Z20P (E)
marked) surface of the PC
mark down.

1-9. Unleaded Solder

Boards requiring use of unleaded solder are printed with a
lead free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come
printed with the lead free mark due to their particular size.)
: LEAD FREE MARK
m
. Be sure to use the unleaded solder for the printed circuit
board printed with the lead free mark.
. The unleaded solder melts at a temperature about 40 dC
higher than the ordinary solder, therefore, it is recom-
mended to use the soldering iron having a temperature
regulator.
. The ordinary soldering iron can be used but the iron tip
has to be applied to the solder joint for a slightly longer
time. The printed pattern (copper foil) may peel away if
the heated tip is applied for too long, so be careful.
1-7