Sony CMT-SBT20B, Operating Instructions Manual

30

GB

CMT-SBT20B

4-582-332-

11

(1)

Troubleshooting

Troubleshooting

If a problem occurs while operating the 
system, follow the steps described below 
before consulting your nearest Sony dealer. 
If an error message appears, be sure to make 
a note of the contents for reference.

1 

Check to see if the problem is listed 
in this “Troubleshooting” section.

2 

Check the following customer 
support websites.

For customers in Europe:

http://www.sony.eu/support

For customers in other countries/
regions:

http://www.sony-asia.com/support
You will find the latest support 
information and a FAQ at these 
websites.

3 

If, after steps 1 and 2, you still 
cannot solve the problem, consult 
your nearest Sony dealer.

When bringing the product in for 
repairs, be sure to bring in the entire 
system (main unit, speakers and remote 
control).
This product is a system product, and 
the entire system is needed to 
determine the section requiring repair.

If “PROTECT” appears on the display 



Immediately unplug the power cord, and 
check the following items after “PROTECT” 
disappears.

•

Make sure that the + and – speaker 
cords are not short circuited.

•

Make sure that nothing is blocking the 
ventilation holes of the system.

After you have checked these above 
items and found no problems, reconnect 
the power cord, and turn on the system. 
If the issue persists, contact your nearest 
Sony dealer.

General

The system does not turn on.

C

Make sure you have connected the power cord 

to a wall outlet correctly.

The system has entered standby mode 
unexpectedly.

C

This is not a malfunction. The system enters 

standby mode automatically in about 15 

minutes when there is no operation or audio 

signal output. See “Setting the automatic 

standby function” (page 26).

The clock setting or the Play Timer operation 
has been canceled unexpectedly.

C

If about a minute elapses with no operation, 

the clock setting or Play Timer setting is 

canceled automatically. Perform the operation 

again from the beginning.

There is no sound.

C

Are the + and – speaker cords short-circuited?

C

Are you using only the supplied speakers?

C

Is anything blocking the ventilation holes of 

the system?

C

Turn up the volume on the unit.

C

Make sure an external component is 

connected correctly to the AUDIO IN jack 



and set the function to AUDIO IN.

C

The specified station may have temporarily 

stopped broadcast.

Sound comes from one channel, or the left 
and right volumes are unbalanced.

C

Place the speakers as symmetrically as 

possible.

C

Connect only the supplied speakers.

Severe hum or noise occurs.

C

Move the system away from sources of noise.

C

Connect the system to a different wall outlet.

C

Use of an AC power tap with a noise filter (not 

supplied) is recommended.