Sony BKDM-3020, Maintenance Manual

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4-5 (E)
2. Check items
(1) Button check
Press the button on the control panel, and confirm that the color of the corresponding display on
the monitor changes.
(2) LED of the button check
Press the button with LED on the control panel, confirm that the LED lights up.
For the buttons with two-color LED (GLBL, CH1, CH2, CH3, CH4), confirm that the LED
lights green and red alternately each time these buttons are pressed.
(3) Knob check
Turn the knob clockwise, and confirm that the corresponding display on the monitor moves to
the right.
Turn the knob counterclockwise, and confirm that the corresponding display on the monitor
moves to the left.
(4) Track ball check
Move the track ball in the right and left, up and down, and confirm that the corresponding
display on the monitor moves to the same directions.
(5) Z-ring check
Turn the Z-ring clockwise, and confirm that the corresponding display on the monitor moves to
the right.
Turn the Z-ring counterclockwise, and confirm that the corresponding display on the monitor
moves to the left.
3. Ending of the menu 804
Reset the control panel BKDM-3010. (Refer to the section 1-15.)
4-2. Self Diagnostics
Track ball
Knobs
Z-ring
Menu 804 monitor screen