KaVo ORTHOPANTOMOGRAPH OP 3D Pro, Руководство по обслуживанию, Страница: 124 / 192

7 Error codes and troubleshooting
116
s2terminal command:
- Downloading raw images - xi, these images can be
use for troubleshooting.
Refer to section,
The s2terminal and service functions
.
Checking circuit boards
Circuit boards cannot be repaired in the field. Some boards
have fuses that can be replaced. However, if a board is
faulty, replace it.
On most of the circuit boards there are indicator LEDs (D)
and test pins (TP), that allow the operation of the board to
be checked and/or tested. The LEDs and test pins for each
circuit board are described in the section
Electrical
Description
. Use a digital multimeter (DMM) when
checking boards.
DANGER HIGH VOLTAGE:
R3400 IO2, R3710 X-ray power supply, R3810 X-ray
generator and R3900 Mains connector include high voltage
indicator lamps (Glim). When a high voltage lamp is on it
indicates that high voltage is present. DO NOT touch the
board until the high voltage has dissapated and the lamp
has gone out.
When handling circuit boards take all necessary
precautions to prevent the build up of static electricity and
possible static damage to the boards.
Checking cables and connectors
Visually check cables for mechanical damage, cuts,
damaged insulation and bad twists. If a cable is damaged
in any way replace it.
If there is no obvious mechanical damage to a cable but
you think that it may be faulty, use a digital multimeter
(DMM) to check the resistance of the different wires within
the cable. An undamaged wire will have close to no
resistance (>0 ohm), a damaged wire will have a high
resistance value.