Eppendorf D30 BioPhotometer - Manual (Page 58)

Maintenance
Eppendorf BioPhotometer
® D30
English (EN)
58
8.3.2 Device self test
You can set the frequency of the automatic self test (taking approx. 1 minute) with the Device settings
function (see Device settings on p. 51). Ex-factory, the self test interval is set to "weekly".
The self test checks the following items:
• Verification of the detector
– Determination of the random error of the available wavelengths
• Verification of the light source
– The device checks the maximally available light source energy and the light cable quality
– Determination of the random error of a signal on the reference sensor
– Determination of the signal level at the reference sensor
– Separate determination of the light intensity in the UV range
• Determination of the systematic and random error of the wavelength
 In the Device calibration group, select the Perform selftest function and confirm with enter.
After the self test has passed, the display shows the message PASSED.
If the display shows the message FAILED, the self test has failed. If this error cannot be corrected (see
Error messages on p. 62), contact Eppendorf Service.
8.4 Replacing fuses
The fuse holder is located between the mains connection socket and the mains power switch.
1. Disconnect the power plug.
2. Press the upper and lower end of the plastic springs 1 together and pull the fuse holder 2 fully out.
3. Replace faulty fuses and reinsert the fuse holder. Make sure that the guiding rail 3 is positioned
correctly.
DANGER! Electric shock.
 Switch off the device and disconnect the power plug before starting maintenance or
cleaning work.
1
2 3