48value. The following problems are possible when the message appears.(1) The solvent on the sample side is different from the solvent on thereference side.(2) Large bubbles remain in the cell -> Remove the bubbles (refer to section9.2).(3) Optical zero is not properly adjusted.When this message appears, press the [CLEAR] key to clear the message(see note), display the preamplifed output screen, and check the DIFF value(refer to section 5.2).Note: The message will reappear every 20 seconds, until the problem isfixed.Replace solvent in the reference and sample cell according to the tubingarrangement. (Refer to chapter 8 and section 4.2) Once the DIFF and SUMvalues in the preamplified output screen have stabilized, press[SHIFT]+[AUTOZERO] key. Adjustment is satisfactory if the DIFF value falls tozero within +/-0.01xx.9.1.3.5 WARNING LAMP MAINTE TIMEThis message appears when the lamp operation time reaches the setmaintenance time. Press the [CLEAR] key to clear the message. Theinstrument may continue to be used.Note: Refer to section 9.5 for details regarding how to set the lampmaintenance time.9.2 Flow cell bubble removal9.2.1 Baselines when bubbles are generatedThe following baseline phenomena occur when bubbles are generated in theflow cell.
