Servicing Notes - Sony STR-DB798 Service Manual

STR-DB798
• MODEL IDENTIFICATION
– Back Panel –
Model
AEP model
Taiwan model
UK model
4
SECTION 1

SERVICING NOTES

UNLEADED SOLDER
Boards requiring use of unleaded solder are printed with the lead-
free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with
: LEAD FREE MARK
Unleaded solder has the following characteristics.
• Unleaded solder melts at a temperature about 40 °C higher
than ordinary solder.
Ordinary soldering irons can be used but the iron tip has to be
applied to the solder joint for a slightly longer time.
Soldering irons using a temperature regulator should be set to
PART No.
about 350 °C.
Caution: The printed pattern (copper foil) may peel away if
PART No.
• Strong viscosity
2-594-539-0[]
Unleaded solder is more viscou-s (sticky, less prone to flow)
2-594-539-1[]
than ordinary solder so use caution not to let solder bridges
2-594-539-4[]
occur such as on IC pins, etc.
• Usable with ordinary solder
It is best to use only unleaded solder but unleaded solder may
also be added to ordinary solder.
the lead free mark due to their particular size)
the heated tip is applied for too long, so be careful!