3-70 Phaser 6280 Color Laser Printer Service ManualError Messages and CodesInsert Transfer UnitThe printer does not detect the Transfer Unit.Applicable Chain Link■ Chain Link 094-910: Insert Transfer UnitInitial Actions■ Remove and reseat the Transfer Unit.■ Cycle printer power.■ If the problem persists, follow the procedure below.Troubleshooting Reference TableApplicable Parts Wiring and Plug/Jack Map References■ Front Cover Harness, PL1.2.11■ Transfer Unit, PL4.1.1■ MCU Board, PL9.1.20■ Right Side Harness, PL10.1.15■ “Map 1 - Electrical and Drive” onpage 10-9■ “Map 4 - LVPS and MCU Boards” onpage 10-12■ “Xerographic” on page 10-30Troubleshooting Procedure TableStep Actions and Questions Yes No1 1. Is the Transfer Unit installed correctly?2. Is the Transfer Unit correctly installed?Go to step 2. Reseat theTransfer Unit(page 8-8).2 Does the error still occur? Go to step 3. Complete.3 1. Check the wiring harness connectors P/J27, P/J272, and P/J2721 between theMCU Board and the Transfer Unit.2. Are the connectors securely connected?Go to step 4. Reconnecttheconnectors.4 Check the Right Side Harness for continuity.1. Disconnect P/J27 from the MCU Boardand P/J272 from the Front CoverHarness.2. Check continuity between P/J27 <=> P/J272.Go to step 5. Replace theRight SideHarness.
