TABLE OF CONTENTS1. MAINTENANCE1-1. Adjustment, Periodic Maintenance, Periodic Replacement Parts, and Replacement Consumables by ServiceEngineer1-2. Customer Maintenance1-3. Special Tools1-4. Sensors1-5. Serial Number Location2. LIST OF ERROR DISPLAY / TROUBLESHOOTING2-1. Operator Call Errors2-2. Service Call Errors2-3. Troubleshooting by Symptom3. REPAIR3-1. Major Replacement Parts3-2. Part Replacement Procedures(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) removal(10) Engine unit reassembly(11) Ink absorber replacement4. ADJUSTMENT / SETTINGS4-1. User Mode4-2. Service Mode(1) Service mode operation procedures(2) Service Tool functions(3) LF / Eject correction(4) Button and LCD test(5) Ink absorber counter setting(6) DVD / CD print position correction4-3. Grease ApplicationMP640 / MP648