DX Service and Support Click the icons and pdf links below for more information regarding your DX model. Contact Oartec at firstname.lastname@example.org if you need more help. User Manual Complete user manual with assembly, set up, maintenance, troubleshooting and warranty information. Oartec Training Monitor (OTM-2) OTM-2 OverviewOTM-2 Operation Manual Assembly Quick and easy to follow assembly instructions. Maintenance Important list of maintenance procedures to keep your DX in optimal working condition. Troubleshooting If something doesn't seem right, check the troubleshooting list. Schematics and Parts Assembly drawings and parts list. Service Manuals Service manuals and procedures. Warranty Standard warranty is 3 years frame and 1 year parts.