AIR-SA15R, AIR-SA20PK - 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  THE  S-AIR  COMMUNICATION  CONFIRMING
EZW-RT10 of the attachment is necessary for the confi rmation of 
S-AIR communication.
Confi rm S-AIR after inserting EZW-RT10 in the set (AIR-SA15R).

DIRECTION  OF  EZW-RT10  INSTALLATION
When EZW-RT10 is install with the S-AIR RX-IF board detached 
of the set, the label of EZW-RT10 is the under and install.

US and Canadian models

AC: 120V - 60Hz 15W

AEP and UK models

AC: 230V - 50/60Hz 15W

S-AIR  RX-IF  BOARD  DISCRIMINATION
In this set, the S-AIR RX-IF board has been changed in the mid-
way of production. Repair after distinguishing each type set to do-
ing the repair referring to the following.