1. Fault phenomenon: There is no display on the screen.
Remedy: If the power switch is turned on, the fuse is broken and the fuse is replaced.
2. Fault phenomenon: The printer does not print or has printing paper but no display on paper.
Remedy: Check that the printer should have no paper in the “built-in†and “on†positions, and load the printer with paper.
3. Fault phenomenon: The test result is not accurate.
Remedy: Deterioration of the test strip and replacement of the test strip;
The test strip is displaced during the test and should be retested;
The test strip is not in place and should be near the top of the test strip;
The test strip is contaminated by residual juice on the stage, and the test platform should be cleaned;
Excess juice is left on the test strip, and the excess juice is absorbed by the absorbent paper and then re-measured.
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