Phaser 6280 Color Laser Printer Service Manual 3-79Error Messages and CodesLoad Tray 3 (Paper Mismatch)The paper size mismatch is detected in Tray 3.Applicable Chain Link■ Chain Link 024-911: 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 References■ MCU Board, PL9.1.20■ Tray 3 Size Switch, PL12.2.5■ Tray 3, PL12.4.1■ Tray 3 Retard Roll, PL12.5.17Troubleshooting Procedure TableStep Actions and Questions Yes No1 1. Check the paper size.2. Does the paper size meet thespecifications?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.4 1. Reseat the paper End Guide.2. Does the error still occur?Go to step 5. Complete.5 1. Replace Tray 3.2. Does the error still occur?Replace theMCU Board(page 8-86).Complete.