Section 1 Servicing Notes - Sony SS-CT150 Service Manual

SS-CT150/CT350
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
the lead free mark due to their particular size)
: 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
about 350 °C.
Caution: The printed pattern (copper foil) may peel away if
the heated tip is applied for too long, so be careful!
• Strong viscosity
Unleaded solder is more viscous (sticky, less prone to fl ow)
than ordinary solder so use caution not to let solder bridges
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.
• JIG
When disassembling the set, use the following jig (for speaker
removal).
Part No. J-2501-238-A JIG FOR SPEAKER REMOVAL
ADVANCE PREPARATION WHEN CONFIRMING OP-
ERATION
When the operation of the subwoofer (SA-WCT150/WCT350) or
satellite speaker (SS-CT150/CT350) is confi rmed, it is necessary
to connect both these set.
Confi rm the subwoofer (SA-WCT150/WCT350) and satellite
speaker (SS-CT150/CT350) are prepared beforehand when you
repair.
NOTE OF SS-CT150 DISASSEMBLING
Cutting of cloth grille is necessary for disassembling SS-CT150.
When assembling, exchange cloth grille and frame grille for new
grille frame assy.
2
SECTION 1
SERVICING NOTES