STR-DN1000 - Sony Audio Service Manual (repair manual). Page 4

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  IC2022  ON  THE  DIGITAL 
BOARD
IC2022 on the DIGITAL board cannot exchange with single. 
When this part on the DIGITAL board is damaged, exchange the 
entire mounted board.

NOTE  OF  REPLACING  THE  IC3203,  IC3506  AND  
IC3508  ON  THE  DIGITAL  VIDEO  BOARD
IC3203, IC3506 and IC3508 on the DIGITAL VIDEO board can-
not exchange with single. When these parts on the DIGITAL VID-
EO board are damaged, exchange the entire mounted board.

NOTE  OF  REPLACING  THE  IC5021  ON  THE  DSP  
BOARD
IC5021 on the DSP board cannot exchange with single. When this 
part on the DSP board is damaged, exchange the entire mounted 
board.

If there is a malfunction, the display shows a 
message. You can check the condition of the 
system by the message. See the following table 
to solve the problem. If any problem persists, 
consult your nearest Sony dealer. 

Irregular current is output to the speakers, or 
upper panel of the receiver is covered with 
something. The receiver will automatically 
turn off after a few seconds. Check the 
speaker connection and turn on the power 
again.

For other messages, refer to “Operating 
instructions”.

If you are unable to remedy the problem,
clearing the receiver’s memory may remedy
the problem. However, note that all memorized 
settings will be reset to their initial settings and 
you will have to readjust all settings on the 
receiver.

Before using the receiver for the first time, 
initialize the receiver by performing the 
following procedure. This procedure can also 
be used to return settings you have made to 
their factory defaults. 
Be sure to use the buttons on the receiver for 
this operation.

?/1 to turn off the 

?/1 for 5 seconds.

After “CLEARING” appears on the 
display for a while, “CLEARED!” 
appears.
All the settings you have changed or 
adjusted are reset to the initial settings.

?/1

?/1

Be sure to use the buttons on the receiver for 
this operation.

?/1 to turn off the 

?/1.

“S.F. CLEAR” appears on the display and 
all sound fields are reset to their initial 
setting.

?/1

?/1

MUSIC