HT-SS380, STR-KS380 - Sony Audio Service Manual (repair manual). Page 3

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)

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.

NOTE OF REPLACING THE IC4500 ON THE DCDC 
BOARD
IC4500 on the DCDC board cannot exchange with single. When 
these parts on the DCDC board are damaged, exchange the
entire mounted board.

NOTE OF REPLACING THE IC3500 AND IC3501 ON THE 
HDMI RE MOUNT PC BOARD
IC3500 and IC3501 on the HDMI RE MOUNT PC board cannot 
exchange with single. When these parts on the HDMI RE MOUNT 
PC board are damaged, exchange the entire mounted board.

US

4-258-284-0[]

Canadian

4-258-284-1[]

AEP

4-258-284-2[]

Argentina

4-258-284-3[]