User manual
Agilent 1260 Infinity High Performance Autosampler User Manual 99
Error Information
7
Module Error Messages
Initialization Failed
Error ID: 4020
The autosampler failed to complete initialization correctly.
The autosampler initialization procedure moves the needle arm and 
transport assembly to their home positions in a predefined routine. During 
initialization, the processor monitors the position sensors and motor 
encoders to check for correct movement. If one or more of the movements 
is not successful, or is not detected, the error message is generated.
Probable cause Suggested actions
1 Side door not installed correctly.
• Check if the side door is installed correctly. 
• Check if the magnet is in place in the side 
door.
2 Sample transport/sampling unit not aligned 
correctly.
Do an auto-alignment 
3 Mechanical obstruction.
Ensure unobstructed movement of the 
transport assembly.
4 Defective sampling unit flex board.
Please contact your Agilent service 
representative.
5 Defective transport assembly flex board.
Please contact your Agilent service 
representative.
6 Defective sampling unit motor.
Please contact your Agilent service 
representative.
7 Defective main board.
Please contact your Agilent service 
representative.










