检查检测器密封垫，如有必要就替换。如有必要清洗或替换检测器喷嘴。

Check detector seals, and replace as necessary. Clean or replace detector jets as necessary.

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如有必要清洗或替换检测器喷嘴。

Clean or replace detector jets as necessary.

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如有必要清洗或替换检测器喷嘴。

Clean or replace detector jets as necessary.

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