HP 7683 - Front (or Back) Plunger Error; Front (or Back) Syringe Error

Installation Guide
Error messages
30
Front (or back) plunger error
Probable causes
• The syringe plunger is sticking, or not securely connected to the plunger
carrier.
• The plunger solenoid is binding.
• The plunger carrier encoder is inoperable.
Suggested actions
1. Remove the syringe, and check it for plunger stickiness or binding.
Replace the syringe if necessary. For more information, see Inspecting
a syringe in the Operation Guide.
2. Check the viscosity of the sample against the viscosity parameter. Reset
the viscosity parameter if necessary.
3. Restart the sequence.
4. If the error occurs again, obtain HP service.
Front (or back) syringe error
Probable causes
• The syringe carriage motor is defective.
• The syringe is not currently installed or is an incorrect type.
• The syringe carriage sensor is inoperable.
Suggested actions
1. Ensure the syringe is installed correctly. For more information, see your
Operation Guide.
2. Ensure the syringe meets specifications.
3. If the syringe needle is bent, see Correcting syringe problems on
page 23.