To resolve the needle jamming issue of Agilent 1260 autosampler, you can try the following steps:

1. Software-assisted adjustment: Through the instrument control software, select the autosampler module → enter maintenance position → access the needle replacement module, then execute the "lift needle" command to raise the needle to the maximum position. This can help release minor jams or facilitate subsequent inspection and maintenance.
2. Sample bottle volume control: Avoid overfilling sample bottles; it is recommended to keep the sample volume between 1/2 and 3/4 of the bottle capacity to prevent sample overflow from interfering with needle movement and causing jams.
3. Professional maintenance support: If the above steps do not effectively resolve the problem, it is advisable to rely on professional technical services.

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