STR-DN1040 - Sony Audio Service Manual (repair manual). Page 6

Read Sony STR-DN1040 Service Manual online

STR-DN1040
6
If there is a malfunction, a message appears 
on the display panel. You can check the 
condition of the system by the message. If 
any problem persists, consult your nearest 
Sony dealer.
PROTECTOR
The receiver will automatically turn off 
after a few seconds, check the 
followings:
s There may be electrical surge or power 
failure. Unplug the AC power cord 
(mains lead), and then plug in the cord 
again after 30 minutes.
s The receiver is covered and ventilation 
holes are blocked. Remove the object 
covering the ventilation holes of the 
receiver.
s The impedance of the connected 
speakers is below the rated impedance 
range indicated on the back panel of 
the receiver. Reduce the volume level.
s Unplug the AC power cord (mains 
lead), let the receiver cool down for 
30 minutes while troubleshooting the 
followings:
– Disconnect all the speakers and 
subwoofer.
– Check that the speaker wires are 
tightly twisted on both ends.
– Connect front speaker first, increase 
the volume level and operate the 
receiver at least 30 minutes until it 
completely warms up. Then, connect 
each additional speaker one by one 
and test each additional speaker until 
you detect which speaker that is 
causing the protection error.
After checking above items and fixing 
any problems, plug in the AC power cord 
(mains lead) and turn on the receiver. If 
the problem persists, consult your 
nearest Sony dealer.
Error messages
USB FAIL
An over current from the   (USB) port 
was detected. The receiver will 
automatically turn off after a few 
seconds. Check the iPod/iPhone or USB 
device, then unplug it and turn on the 
power again.
For other messages, see “Message list after 
Auto Calibration measurement”, 
“iPod/iPhone message list”, 
“USB message list” and 
“Network features message list”.
Reference sections
Clearing the memory
r
a
e
l
c
 
o
T
All memorized settings
Customized sound fields
Reverting back to the 
factory default settings
You can clear all memorized settings and 
revert the receiver back to the factory 
default settings by performing the 
following procedure. This procedure can 
also be used to initialize the receiver before 
you use it for the first time.
Be sure to use the buttons on the receiver to 
perform this operation.
1
Press 
?
/
1
 to turn off the receiver.
2
Hold down 
?
/
1
 for 5 seconds.
The “CLEARING” appears on the 
display panel for a while, then changes 
to “CLEARED!”.
Changes or adjustments made to the 
settings are now reset to the defaults.
It takes about a few minutes for the memory to be 
cleared completely. Do not turn the receiver off 
until “CLEARED!” appears on the display.
Note
?/1
Resetting sound fields 
to the default settings
Be sure to use the buttons on the receiver to 
perform this operation.
1
Press 
?/1 to turn off the receiver.
2
While holding down MUSIC, press 
?/1.
“S.F. CLEAR” appears on the display 
panel and all sound fields are reset to 
their default setting.
?/1
MUSIC
Page of 127
Display

Click on the first or last page to see other STR-DN1040 service manuals if exist.