General Troubleshooting 3-49Unsupported Tray [3][4][5][6] ROMThe printer has detected an incompatible LTA or HCF assembly.Applicable Status Codes:Code U35: Unsupported Tray 3 ROMCode U36: Unsupported Tray 4 ROMCode U37: Unsupported Tray 5 ROMCode U38: Unsupported Tray 6 ROMInitial Actions:■ Reseat the Option Tray connector.■ Cycle the printer's power.■ If the problem persists follow the procedure below.Troubleshooting Reference TableApplicable Parts Wiring and Plug/Jack References■ Option Control Board ■ Options Map 5 Paper Tray Controller BoardTroubleshooting Procedure TableStep Actions and Questions Yes No1 Check the following for evidence of fault ordamage:■ Option ConnectorIs there any damage?Replace anydamaged parts.Go to Step 2.2 Check that the optional tray is correctlyinstalled and fully seated.Go to Step 3. Reseat the optiontray.3 Check the Option Control Board versionusing the Service Diagnostics GeneralStatus menu.Is the version current?Replace the EngineControl Board (seeBook 1)Replace theOption ControlBoard.