TA-SA300WR - 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.

ADVANCE  PREPARATION  WHEN  CONFIRMING  OP-
ERATION
When the operation of the TA-SA300WR is confi rmed, it is nec-
essary to communicate the set of main unit, TA-SA300WR and 
EZW-RT50.
Confi rm the main unit with wireless connection, TA-SA300WR 
and EZW-RT50 are prepared beforehand when you repair.

CHECK  THE  STATUS  OF  LINK/STANDBY  INDICATOR
Operation condition can be confi rmed by the LINK/STANDBY 
indicator status.

L

R

3-16

IMPEDANCE USE

SPEAKERS

SECURE LINK

EZW-RT50

US model

4-208-364-0[]

Canadian model

4-208-364-1[]

AEP, Italian and UK models

4-208-364-2[]

Saudi Arabia, Iranian, Middle East 
and Indian models

4-208-364-4[]

Singapore model

4-208-364-5[]

Thai models

4-208-364-6[]

Australian model

4-208-364-7[]

Taiwan model

4-208-364-8[]

Russian model

4-416-303-0[]

Chinese model

4-416-303-1[]

Latin American model

4-416-303-2[]

PX model

4-416-303-3[]

LINK/STANDBY

Turns green.

The system is turned on, 
wireless transmission is 
activated and surround signals 
are being received.

Turns orange.

The system is turned on, 
wireless transmission is 
activated with the Secure Link 
function, and surround signals 
are being received.

Flashes green 
quickly.

The wireless transceiver is not 
inserted correctly into the 
wireless transceiver slot.

Flashes green 
or orange 
slowly.

Wireless transmission is 
deactivated.

Turns red.

The surround amplifier is in 
standby mode while the system 
is in standby mode or wireless 
transmission is deactivated.

Turns off.

The surround amplifier is 
turned off.

Flashes red.

The surround amplifier’s 
protection is active.