TA-F501ES - Sony Audio Service Manual (repair manual). Page 4

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4
TA-F501ES
ERROR  MESSAGES
If there is a malfunction, the display shows a code of two numbers. You can check the condition of the system by message. Refer to the
following table to solve the problem. If any problem persists, consult your nearest Sony dealer.
Messages
Check code
Cause and Response
PROTECTOR
11
Irregular current is output from the speakers. Turn off the ampli-
fier, check the central core of a speaker cord is not touching the
amplifier or other speakers, and turn on again.
PROTECTOR
12
The amplifier section is overheated. Check that the ventilation hole
is not covered. Turn off the amplifier, leave the amplifier for a
while, and turn on the power again.
PROTECTOR
14
Turn off the amplifier, check the central core of a speaker cord is
not touching the amplifier or other speakers.
PROTECTOR
21
Turn off the amplifier and check that the speaker cords are
connected correctly, then turn the power on again.
SECTION  1
SERVICING  NOTES
POWER  BOARD  SERVICE  POSITION
POWER board
insulate plate
To check the backside, 
remove the AC inlet from the back panel.
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