I've researched for a service manual that we can provide you for your Fargo DTC400 however, for this certain model of Fargo printer there is none available. But you can contact Fargo directly so they can send you one through email. If you're in the US you may reach their support at 1-866-607-7339
. In UK it's +44 (0) 1440 711822
Just in case in the future you might need a User Manual you may download it by clicking on this link
Hope it helps.
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