Bio-Rad Model 680 Microplate Reader Accessories - Manual (Page 47)

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Section 6. Troubleshooting and Error Messages
The Model 680 Microplate Reader constantly monitors several functions and will display appropriate error
message on the LCD when errors are encountered.
1. LCD appears blank on power up.
a. Power switch is not turned on.
Turn on power switch on the rear panel.
b. Unit is not plugged into AC outlet or power
code is not attached to the instrument. Check power cord connections at outlet and
on the rear panel of the instrument.
c. The AC outlet is non-functional. Check circuit breakers or fuses.
d. Instrument has blown a fuse. Check the fuse on the rear panel of the
instrument, and replace if necessary.
Replace only with the same type fuse. If the
instrument continues to blow fuses,
discontinue use and contact your Bio-Rad
service representative immediately.
2. Instrument displays “Light bulb error” message
indicating that the bulb is burned out.
Check whether lamp is emitting light.
a. Lamp is not emitting light. Replace the lamp as described in Section
5.2
b. Lamp is emitting light. Check the alignment of the lamp in the
housing.
Align or replace the lamp if necessary.
3. Printer will not print on command.
a. Printer paper is not installed properly. Verify that the paper is properly installed.
Refer to Section 3.1 for details.
4. Plate carriage jams during reading, and
“Carrier home sensor open status error” ,
“Carrier home sensor closed status error” ,
“Carrier jammed error before reading” ,
or “Carrier jammed error after reading”
is displayed.
a. Plate is not seated in carriage properly. Press the STOP button immediately. Position
the plate carefully in the carriage, making
certain that it is properly seated.
5. LCD displays “Filter missing”. Install a filter in the empty position. See
Section 5.1.
Select the installed filter by pressing Edit key.
6. LCD displays “Filter disk jammed”, indicating
that the filter wheel is not turning freely. Turn off the instrument, and inspect the filter
wheel. Turn by hand to verify that the wheel
is moving freely. Make sure that all the filters
are properly installed and firmly seated.
Contact your Bio-Rad representative if the
filter wheel is jammed or if the problem
persists.