1-17 (E)
PMW-EX1R
1-8-5. Memory Backup Battery
For replacing the battery, refer to “Backup Battery” of the “Appendixes” in the Operating Instructions.
When the backup battery is replaced, the date and time in the internal clock need to be set. Refer to “Set-
ting the Clock” of the “Preparations” in the Operating Instructions.
1-8-6. 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
recommended 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.