KaVo ORTHOPANTOMOGAPH OP 2D, Service Manual

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4. Troubleshooting
ORTHOPANTOMOGAPH OP 2D 69
CAUSE B
The emergency stop icon appears on the main display
but does not clear when the emergency stop button is
released. The patient positioning lasers do not come
on.
SOLUTION B
Check connector JP129 on L1600 (Z-motor driver).
Check cable between L1600 and the emergency stop
button. Disconnect the emergency stop button to deter-
mine if the switch or L1600 board is broken.
NOTICE!
When LED D1, on L1600 (Z-motor driver), is on it in-
dicates that the board is receiving 5VDC from L1500
(CCD power supply). If the LED D1 is not on there is a
power supply problem.
CAUSE C (Unlikely)
All the lights are faulty.
SOLUTION C
Replace all the lights, they are connected to L1600 (Z-
motor driver) and then realign them. Refer to the instal-
lation manual.
Up/down (Z-motor) keys do not work
CAUSE A
The emergency switch has been pressed down.
Image of emergency button appears on main display.
NOTICE! LED D4 (ESTOP on) on L1600 will come on
when the emergency switch is pressed down.
SOLUTION A
Turn the emergency switch clockwise to release it.
CAUSE B
Z-motor not receiving power.
SOLUTION B
Check to see if lamp LA1 and LED D1 on L1600 are on.
If they are not then check fuses F1 and F2. Replace if
blown.
If after replacing fuse F2 lamp LA1 comes on but LED
D1 still does not come on,check cables between L1600
and L1700. If the cables are OK, check if D12 is on on
L1500. If it's not, replace L1500.