Manual

What to do if...
137
Cause Remedy
– Batteries almost
depleted
– Replace batteries
(see section 5.1.1
CHANGING THE BATTERIES)
Cause Remedy
– Timeout of the interface – Checkout connected
instrument
Cause Remedy
– pH electrode unsuitable – Use suitable electrode
– Temperature difference
between buffer and
sample too large
– Adjust temperature of
buffers or samples
– Measuring procedure not
suitable
– Follow special procedure
Cause Remedy
– Operating state
undefined or EMC
electric stress unallowed
– Processor reset:
Press the <auto read>
key and switch on
instrument
Cause Remedy
– Printer switched off – Switch on printer
– No mains power supply
connected
– Connect mains power
supply
– Interface cable
connected
– Unplug cable
– No paper available – Replace roll of paper
LoBat display
*( display
Obviously incorrect
measured values
Instrument does not
react to keystroke
Integrated printer
does not print