Thank you for your interest in the TX51 by ONKYO. This item is an OEM service manual which contains the manufacturer's service data that they release to repair centers. These may contain some detailed drawings, diagrams, schematics or parts list provided directly by the manufacturer at their discretion.
* Hard copy items have additional printing and shipping fees that will be calculated on check out. This item is only available in hard copy form and is not part of the subscription service.