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The display remains blank
when switched on
Date/time is lost when swit-
ched off
Password forgotten
Photometer does not react
Measured value is output in
small numerals
"OFL" is displayed instead
of the measured value
"Memory Card?" is display-
ed
"Invalid command" is dis-
played on the PC
Cause
No power supply.
The support battery of the real
time clock is empty.
The connected printer is off line.
The measured value is above or
below the measuring range. The
given value is an extrapolated
value which is an approximate
value for possible dilutions.
The measured value is outside
the measuring range.
The Memory Card has not been
inserted.
When entering user-defined
methods via the PC a mistake
was made.
20 What to do if...
Remedy
→ Connect the photometer to the mains
supply via the plug-in power supply
unit.
→ Send the meter to the service depart-
ment to have the battery replaced.
→ Inform the service department.
→ Switch on the printer or pull out the
interface cable.
→ Use a method with a suitable measu-
ring range or
→ If the measuring range is exceeded
dilute the sample or
→ With a reagent test, use a different
rectangular cell if necessary.
→ Use a method with a suitable measu-
ring range or
→ If the measuring range is exceeded
dilute the sample or
→ With a reagent test, use a different
rectangular cell if necessary.
→ Insert the Memory Card (see chapter
C
3
). After approx. 10
OMMISSIONING
s the warm-up time starts.
→ see paragraph 13.2
E
RACTERISTICS VIA THE
-
NTERING CHA
PC
.
119
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