Bio-Rad Model 550, Ultramark, and Benchmark Microplate Reader Accessories - Manual (Page 21)

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8. Error Codes
The following error codes appear in the message window of the Ultramark.
Error Message Probable Cause Recommended Solution
Memory(SRAM) An empty battery. Contact Bio-Rad.
ROM replaced. Not a problem.
SRAM chip trouble. Contact Bio-Rad.
Memory(DRAM) DRAM chip trouble. Contact Bio-Rad.
Plate Carrier Dirty guide shaft, or something
blocking the guide shaft. Confirm that there is nothing blocking
the guide shaft, then clean the shaft
and put some grease on it.
Motor drive damaged. Contact Bio-Rad.
Photo sensor damaged. Contact Bio-Rad.
X Axis Dirty guide rail , or something
blocking the rail. Confirm that there is nothing blocking
the guide rail, then clean the rail and
put grease on it.
Motor drive damaged. Contact Bio-Rad.
Photo sensor damaged. Contact Bio-Rad.
Y Axis Dirty guide rail , or something
blocking the rail. Confirm that there is nothing blocking
the guide rail, then clean the rail and
put grease on it.
Motor drive damaged. Contact Bio-Rad.
Photo sensor damaged. Contact Bio-Rad.
Filter Miss Incomplete installation of filters
in the magazine. Install filters correctly into the
magazine.
Photo sensor damaged. Contact Bio-Rad.
Filter ph-s Photo sensor damaged. Contact Bio-Rad.
Incubator Incubator electronics
damaged. Contact Bio-Rad.