Yamaha DSP-A595a Service Manual - Page 9

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FL display at start-up of diagnostic program
When the diagnostic program has started, the history (*2) of the protection function (*1) is displayed. If the protection
function has been activated in the past, the type and voltage value are displayed. After a few seconds the diagnosis
function menu will appear.
(*1) If a faulty condition is detected such as excessive current, a bad power supply or excessive amplifier DC offset,
the Power will be switched OFF automatically.
(*2) The protection records will be cleared when "RESERVED" is selected in diagnosis menu No. 8 and FACTORY
PRESET is engaged.
History of protection function
Each case of the history of the protection function is displayed as shown below.
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(2) EXITING METHOD
The diagnosis function can be exited by any of the following procedures. Take care with the setting of backup memory
initialization menu (diagnosis No. 8) when releasing the diagnosis function:
1. Select diagnosis menu No. 11/submenu No. 6 "EXIT".
2. Press the "STANDBY/ON" key on the main unit or "STANDBY" key on the remote control to turn power off.
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NO PROTECT
I PROTECT
PS : 21%
DC : 19%
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Appears when the protection function has not been activated.
Appears when the current protection function has been activated.
When power is turned on in an abnormal status, the power relay
will come on, protection will operate immediately, and power will
turn off.
Appears when the power protection function has been activated.
For the % value, the voltage at that point is shown by 5V/100%.
When power is turned on in an abnormal status, power will turn off
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after half a second.
Appears when the power amp DC protection function has been
activated.
For the % value, the voltage at that point is shown by 5V/100%.
When power is turned on in an abnormal status, power will turn off
after two seconds.
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DSP-A595a
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