Lead-Free Solder; Cleaning; About The Cleaning Of Projector - Sony SRX-R320 Service Manual

1-14. Lead-free Solder

Boards requiring use of lead-free 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 lead-free solder for the printed circuit board printed with the lead free mark.
. The lead-free 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.

1-15. Cleaning

1-15-1. About the Cleaning of Projector

Preparation
When using the croser (dry), use it by folding it into four as shown in the fi gure.
Cleaning procedure
1. Blow away the dust and foreign particles using the air blower.
2. Dampen the croser with the alcohol and lightly wipe the projector so that there is no uncleaned area.
3. Put a small amount of the alcohol on the croser and thoroughly wipe the projector.
4. Wipe the projector with the new dry croser.
5. Check that there is no contaminated area being left uncleaned.
1-62 (E)
Croser
SRX-R320