MULTISKAN RC and MS SERVICE MANUAL
Connect pins
7
and
8
of
X4
together, power up the instrument and observe
signal at pin
7
or
8.
The signal should he low when the filter is rotating and high
when not. If this is not so, either transistor
V2
or buffer Dl
is
faulty. Power up
again and observe signal at pin
9
of Dl. It should
be
high when the filter is
rotating and low when the filter is stopped. If not, Dl is faulty, else it was
V2.
If the fault has not yet been found, there still is a slight chance that it is buffer
Dl but more likely it is one of the sensors.
FILTER TIMEOUT
Reason:
Filter home position was not detected within allowed time.
Action: Check that the filter wheel is properly installed in its slot.
Service:
There are twocases. Either the filter is notrotatingproperly or the home sensing
does not work.
In the first case,
try
to measure the plate. If there is a problem with the plate
stepper as well, the problem is in the step clock or enable signals which are
common to both steppers. See what is said of checking these signals in FILTER
OUT OF POSITION TOLERANCE.
Else see fault finding of home sensing electronics in FILTER OUT OF
POSITION TOLERANCE.
INVALID PROGRAM MODULE
Reason:
Action:
LAMP
FAIL
Reason:
Action:
Only program module numbers
1
and
2
are allowed with
C
command.
Use module number
1
or
2.
It is not necessary to use C command at all with
Multiskan RC.
Signal level during air blank is below minimum required value.
Replace lamp. If the lamp is ok but this error is reported with one filter only, the
filter must be bad.
Document Release Section Page
4%-
Labsystems
35 11352- 100-X
1
.O
8
16
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
To Next Page
Loading...
