Phaser 6280 Color Laser Printer Service Manual 3-75Error Messages and CodesTray and Paper ErrorsLoad Tray 1 (MPT) (Paper Size Mismatch)The paper size mismatch is detected in Tray 1 (MPT).Applicable Chain Link■ Chain Link 024-958: IOT Paper Size MismatchInitial Actions■ Inspect the tray to ensure that it is free of obstructions, is loaded withsupported paper, and the Guides are adjusted correctly.■ Cycle printer power.■ If the problem persists, follow the procedure below.Troubleshooting Reference TableApplicable Parts Wiring and Plug/Jack Map Reference■ Tray 1 (MPT) Cover, PL2.1.24■ Registration Sensor, PL3.2.30■ Registration Sensor Harness,PL3.2.37■ MCU Board, PL9.1.20■ Right Side Harness, PL10.1.15■ Tray 1 (MPT) Feed Roll, PL3.1.10■ “Map 2 - Laser Unit, Feeder Assembly”on page 10-10■ “Map 4 - LVPS and MCU Boards” onpage 10-12■ “Tray 1 (MPT) and Registration” onpage 10-23Troubleshooting Procedure TableStep Actions and Questions Yes No1 1. Check the paper size.2. Does the paper size meetspecifications?Go to step 2. Replace thepaper with thecorrectspecifications.2 1. Check the paper size setting.2. Does the paper match with thesettings in the Control Panel?Go to step 4. Correct thepaper settingsin the ControlPanel.Go to step 3.3 Does the error still occur? Go to step 4. Complete.