Troubleshooting—Continued

Recording

Can’t record.

The component connected to the MAIN IN jacks cannot be recorded.

When using the A-9755 as a power amplifier (MAIN IN function), recording is not possible.

Others

The Volume control has no effect.

When using the A-9755 as a power amplifier (MAIN IN function), the Volume control has no effect. Adjust the volume on the connected preamp instead.

The Muting function doesn’t work.

When using the A-9755 as a power amplifier (MAIN IN function), the Muting function does not work. Use the muting function on the connected preamp instead.

The A-9755/A-9555 contains a microcomputer for signal processing and control functions. In very rare situations, severe interference, noise from an external source, or static electricity may cause it to lock up. In the unlikely event that this happens, unplug the power cord from the wall outlet, wait at least ten seconds, and then plug it back in again.

Onkyo is not responsible for damages (such as CD rental fees) due to unsuccessful recordings caused by the unit’s malfunction. Before you record important data, make sure that the material will be recorded correctly.

How to reset:

To reset the A-9755/A-9555 to its factory defaults, while holding down the [PURE DIRECT] button, press the [LOUDNESS] button, and then release both buttons. The input selector indicators light up for one second, and then the A-9755/A-9555 enters On mode.

A-9755/A-9555 BLOCK DIAGRAM

 

SELECTOR

 

VOLUME

PHONO

ON

CD

 

TUNER

OFF

BASS,

 

IN

TREBLE

 

TAPE

PURE DIRECT

OUT

IN

 

MD

 

OUT

ON

HDD IN

 

LINE

OFF

BASS, TREBLE

 

 

HEADPHONE

 

DIGITAL

MAIN IN

AMPLIFIER

ON

 

 

 

 

OFF

LOW PASS

 

L-ch

 

 

FILTER

POWER

 

 

AMP

 

SPEAKER B

DIRECT

 

RELAY

MAIN IN

R-ch

LOW PASS

FILTER

 

ON

 

 

OFF

 

 

DIGITAL

A-9755 ONLY

AMPLIFIER

 

SPEAKER A RELAY

SPEAKER SPEAKER

AB

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Onkyo A-9555, A-9755* instruction manual Troubleshooting, Recording, Others