Table 2-8 Control-panel diagnostic functions (continued)
Item Description Remarks
Speaker test
Tests sounds Use this item to test audio functionality.
1. Touching this item causes the speaker to
emit a tone.
2. Touch the 2 button on the keypad, and then
touch this item to cause the speaker to emit
a more complex tone.
Firmware information
Shows the firmware version Touch this item to display the control-panel
firmware version and firmware build date.
Factory use only
Keyboard test
Tests the product keyboard
NOTE: For products with a keyboard feature
only.
When this item is selected, pressing a button on
the keyboard causes the corresponding character
to appear on the control-panel display.
1. Touch the icon.
2. Press a button on the keyboard. The
corresponding character should appear on
the control-panel display.
Backlight test
Adjusts the backlight Use this item to adjust the brightness of the
control-panel display.
1. Touch the icon.
2. Touch the up
or down arrow buttons
to adjust the backlight level.
ENWW
Troubleshooting process
129
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