Error: Z-axis calibration out of range (8.0) - WKB203828

SYMPTOMS

• When trying to calibrate the z axis, the needle stops about 1 mm away from the tray and cannot go down further
• When saving, the error message "Z-axis calibration out of range (8.0)" appears

ENVIRONMENT

• ACQUITY APC Sample Manager - FTN
• ACQUITY Arc
• ACQUITY Arc Premier
• ACQUITY Arc Sample Manager FTN-R
• ACQUITY UPLC
• ACQUITY UPLC H-Class
• ACQUITY UPLC H-Class Bio
• ACQUITY UPLC I-Class
• ACQUITY UPLC H-Class PLUS
• ACQUITY UPLC H-Class PLUS Bio
• ACQUITY UPLC I-Class PLUS
• ACQUITY UPLC M-Class
• nanoACQUITY UPLC
• ACQUITY UPLC Sample Manager 
• ACQUITY UPLC Sample Manager - Flow Through Needle PLUS (SM-FTN PLUS)
• ACQUITY Premier System

CAUSE

Unknown; possibly a corruption of the NV Ram

FIX or WORKAROUND

1. Reset Sample Manager NVRAM - within ACQUITY console - select the sample manager on the left handside.
2. From the toolbar, go to Troubleshooting > Service Mode and enter the service password.
3. From the tool bar, go to Maintain > Reset non volatile RAM and then perform the following
   1. R-axis calibration  
   2. Z-axis needle calibration
   3. Characterise Needle Seal

ADDITIONAL INFORMATION