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14.5 Troubleshooting
The spectrophotometer doesn't switch on
Cause
– The power cable is not connected
Acoustic signal when operator presses the key
Cause
– The key has not function in actual part of
the software.
Measurement range undercut or exceeded
Cause
– Method not suitable.
Not stable results
Cause
- The cover of cuvette compartment is
opened
– The halogen lamp arrives at its end life
Erroneous measured values
Cause
- Cuvette dirty
- Wrong dilution
- The selected method is not appropriated
- Erroneous zero measurement
– Erroneous blank value
15 Connecting accessories
15.1 Communication interface
Maintenance
Remedy
– Connect correctly the power cable
Remedy
– Press another key.
Remedy
- Select another method which has an appropriate
measuring range.
- Press another key.
Remedy
- Close the cover of the cuvette compartment
– Change the halogen lamp
Remedy
- Clean the cuvette
- Make a dilution again
- Select another method
- Perform the zero again
– Measure the blank again
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Fig. 28 Back of the instrument with connections
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