KaVo ORTHOPANTOMOGAPH OP 2D, Service Manual

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4. Troubleshooting
ORTHOPANTOMOGAPH OP 2D 65
4.2 Common issues
Nothing happens when the unit is switched on
The on/off switch light does not come on.
CAUSE A
Power cut.
SOLUTION A
Check to see if the power has been cut off.
CAUSE B
Unit not connected to the main power supply
SOLUTION B
Make sure that the unit is connected to the main power
supply. Check the condition of the power supply cable.
If it is damaged, replace it.
CAUSE C
The main fuses (2) have blown.
SOLUTION C
Disconnect the main power supply cable from the unit
and then replace the main fuses (2). They are located
below the main power supply cable at the rear of the
column.
The fuse ratings are stated in chapter 2.5 Electrical
description - Main fuses.
The on/off switch light comes on but the display
does not come on.
CAUSE A
L900 (Control panel) is not receiving power or is faulty.
SOLUTION A
Check the supply of power to L900 as follows:
1. Check that the power is supplied to
L1600 (Z-Motor
Driver) .
If it is not, check the cables and connectors be-
tween the on/off switch and L1600 (J114 and J115)
and replace the cables if they are faulty. Also check
the condition of the on/off switch and the mains fi lter
on the main power and interface panel and replace
them if they are faulty.
If the cables, switch and fi lter are okay, replace
L1600.