TA-FA1200ES - Sony Audio Service Manual (repair manual). Page 4

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If there is a malfunction, the display shows a code of two numbers and a message. You can check the condition of the system by message.
Refer to the following table to solve the problem.

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. When using a bi-
wiring connection, check that the metal fittings attached to the
speakers that are used to short the Hi/Lo terminals have been
removed from the speakers.

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. When using a bi-wiring
connection, check that the metal fittings attached to the speakers
that are used to short the Hi/Lo terminals have been removed from
the speakers.

PROTECTOR

13

The power 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. When using a bi-wiring connection,
check that the metal fittings attached to the speakers that are used
to short the Hi/Lo terminals have been removed from the speakers.

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. When using a
bi-wiring connection, check that the metal fittings attached to the
speakers that are used to short the Hi/Lo terminals have been
removed from the speakers.