FAQ - Frequently Asked Questions

Cause1: Bubbles adhering to the cell

Corrective Action1: Clean the cell using the same type of solvent.

 

Cause2: Defect adjustment of a photo sensor

Corrective Action2: Execute a photo sensor centering and adjustment

  Click here for "(SALD) Check the Optical Axis".

 

Cause3: Safety equipment faulty

Corrective Action3: Check the D1 - D4 values in the [Diagnosis & Adjustment] display screen. If these values are single-digit, this indicates a safety device fault.
  Contact a Shimadzu sales or service representative.

 

Cause4: OP amp faulty

Corrective Action4: Check the photo sensor output in the [Diagnosis & Adjustment] display screen. An interrupted graph or one with an abnormal peak indicates an OP amp fault.
Contact your Shimadzu representative.

  Contact a Shimadzu sales or service representative.

 

Cause5: Deterioration in laser diode

Corrective Action5: Check the (LC) values in the [Diagnosis & Adjustment] raw signal (Raw signal – Background signal) display screen. If there is a 30% difference or more between current values and those at installation time, the diode has probably deteriorated.