TABLE OF CONTENTS1. MAINTENANCE1-1. Adjustment, Periodic Maintenance, Periodic Replacement Parts, and Replacement Consumables by Service Engineer1-2. Customer Maintenance1-3. Special Tools1-4. Serial Number Location2. LIST OF ERROR DISPLAY / INDICATION2-1. Operator Call Errors2-2. Service Call Errors2-3. Other Error Messages2-4. Warnings2-5. Troubleshooting by Symptom3. REPAIR3-1. Notes on Service Part Replacement3-2. Special Notes on Repair Servicing(1) External housing, scanner unit, and document cover removal(2) Operation panel removal(3) Cable wiring and connection(4) Emblem removal(5) Carriage unlocking(6) ASF unit removal(7) Carriage unit removal(8) Spur unit and platen unit removal(9) Purge drive system unit (right plate) and switch system unit (left plate) removal3-3. Adjustment / Settings(1) Paper feed motor adjustment(2) Document pressure sheet (sponge sheet) replacement(3) Grease application(4) Ink absorber counter setting(5) User mode(6) Service modeA: Service mode operationB: LF / Eject correctionC: Button and LCD testD: Ink absorber counter setting3-4. Verification After Repair(1) Standard inspection flow(2) Service test print(3) Ink absorber counter value print4. MACHINE TRANSPORTATIONMP620 / MP628