Crown XLS 1000 Series, Service Manual

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A set of diagnostic menus can be accessed at anytime by pushing all three menu
buttons at the same time. The amplifier continues to pass audio, but the diagnostic
menus are displayed until the MODE/MENU button is pushed and normal amplifier
functionality returns.
MODEL & VOLTAGE TYPE: Displays the Model and voltage type.
POWER SUPPLY TEMP & LOW VOLTAGE RAIL:
Displays the Power
Supply Heatsink Temperature and the Low Voltage rail (in volts).
AMPLIFIER CHANNEL TEMP: Displays the heatsink temperature for the power
devices of each channel.
HIGH VOLTAGE RAILS:
Indicates the Amplifier voltage rails, Positive (VP) and
Negative (VN).
FIRMWARE VERSION:
Shows the firmware version.
FAULT STATUS:
Indicates the latest fault that the amplifier has had and the
number of instances of that fault. Refer to the Error Codes section for specific
Fault/Error codes.