Owner`s manual

14
Ayon Audio – Hart 18 – 8101 Gratkorn – Austria – Phone: [phone]
www.ayonaudio.com
6. Activation of the tube test program after a potential tube change
The manual activation of the tube test program with the "bias-setup" button becomes necessary after
changing the AA62B tubes. The circuit is activated when operating the "bias setup" button while the
Ayon logo blinks; this is necessary for the immediate detection of a possibly defective tube (electric short
circuit or too high current consumption of the new tube). This way you have maximum security from a
short circuit in the tube combined with maximum safety for the amplifier.
1. Switch on the amplifier (power ON), the Ayon-logo blinks.
2. Now press the „bias-setup“ button and keep it for approx. 3 sec (the switching relay creates an
audible "click") while the Ayon-logo keeps blinking.
The system heats up the tubes for approx. 3 minutes (the Ayon-logo keeps blinking and the amp is
muted). After heating-up the automatic bias adjustment starts autonomously and the system
checks every tube several times. When all tubes are okay the system automatically switches to
operational mode, the Ayon-logo glows permanently and the amp is ready for music
reproduction.
Note: this procedure takes about 10 minutes and the amp is muted for this period.
While the tube test program is active, the amplifier cannot be switched off. Do not interrupt the
power supply.
Tube test not successful in manual nor automatic activation
In case a tube is defective the high voltage of the tube (B+) is switched off immediately.
The Ayon-logo blinks, and the tube concerned is indicated by the related red glowing LED (V1, V2) on
the rear side of the amp. Note: The amp cannot be switched of manually with the power switch.
What to do:
1. Set the power switch to OFF-position.
2. Pull off the power cable.
3. Assure yourself that the tubes are sufficiently cooled down (ca. 10 minutes).
4. Replace the tube concerned.
5. Connect the power cable again.
6. Switch on the amp; the tube test program is activated automatically.
7. After the successful tube test the system automatically switches to operation, the Ayon-logo glows
permanently and the amp is ready for music reproduction.
Defective tube cannot be identified despite the tube test mode:
In case a tube is heavily damaged the system has to switch off again immediately and there is no time to
indicate it with the right LED in the tube test mode. Therefore you have to identify this tube yourself by
changing tube by tube until you have found the defective one.
● Please contact your dealer when you do not feel comfortable to execute this procedure yourself.
Note: after every preceding protective switch-off the tube test program is automatically activated at the
next switch-on until the tube test is successful and the amp switches to operational mode.
Should the protection circuit continue to activate even after removing the cause, please contact
your dealer.