KaVo ORTHOPANTOMOGAPH OP 2D, Service Manual

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4. Troubleshooting
ORTHOPANTOMOGAPH OP 2D 67
5. If the voltages on the L900 board are OK (LEDs on)
check the cables between L900 and the LCD-dis-
play. If the cables are okay, replace LCD-display.
Check the cable between L900 and L1200, replace
if faulty.
CAUSE B
The display backlight power level has been set to OFF.
SOLUTION B
Use the service terminal to change the display backlight
power level.
Image of emergency button appears on main display
CAUSE
The emergency switch has been pressed down.
NOTICE! LED D4 (ESTOP on) on L1600 will come on
when the emergency switch is pressed down.
SOLUTION
Turn the emergency switch clockwise to release it.
The side control panel Return key does not work
CAUSE A
Bad membrane key panel connection to L1600 board.
SOLUTION A
Check that the membrane panel cable is properly at-
tached to the connector on L1600 board.
CAUSE B
The Membrane key panel is faulty.
SOLUTION B
Press some of the other keys to see if they work cor-
rectly. If they do it indicates that the return membrane
key is faulty and the membrane key panel must be
replaced.