Gendex ORTHORALIX 9200 Service Manual page 71

ORTHORALIX 9200 Service Manual
F.1 Introduction
This section details the corrective maintenance for the Orthoralix
9200 systems.
In general, the defective part is located by means of diagnostic
messages, self-test information or by the principle diagrams.
In the event of electronic defects, repairs are made by replacing
one of the following exchangeable units:
If the converter board PQ1 or the tubehead need
to be replaced, the service programs Tube calibra-
tion and Vf tube editing must be performed (see
the relevant paragraphs of this section for more
information)
If the host computer PC1 needs to be replaced, re-
member to remove the EEPROM D38 from the old
board and mount it on the new one, otherwise all
the following parameters will be lost:
If you forget to do this, recover the information from
the System Configuration Chart (see Section C).
the new PA7 by using the Service Programs (see
the relevant paragraphs of this section for more
information).
Gendex Dental Systems 4519-190-71193-7
F-2
Printed on: 20 Apr 2012, 04:59:40 pm; Printed by: UWE.ZELLER
In the event of mechanical or motor defects, the following as-
semblies can be replaced:
Do not move the Z-carriage along the column
when the system is off:doing so it could damage
the PC6 board.
F.2 Equipment required
To perform corrective maintenance on Orthoralix 9200 systems
the following equipment is required:
F.3 Diagnostic messages
While the Orthoralix 9200 system is running, a number of mes-
sages may be generated on the display, to warn the operator
of equipment irregularities or to indicate that some fault has
occurred.
In the latter case a diagnostic message will help to find the
fault.
The meaning of each message is given, together with an expla-
nation about the electrical circuit involved with the defective
function.
If more than one alarm is detected, the first one acknowledged
is displayed and the others are stored: by pressing the RESET
the alarms acknowledged.
F.3.1 Over temperature
This alarm indicates that the temperature measured over the
power transistors (by a PTC sensor) of the converter board has
exceeded the limit (>80° C).
the alarm, temporarily disables the converter electronics and
communicates the alarm to the host board PC1.
The host provides a diagnostic message on the display and
waits for the alarm to self-reset before starting a new exposure
sequence.
(03.0)E