1. MAINTENANCE1-1. Adjustment, Periodic Maintenance, Periodic Replacement Parts, and Replacement Consumables by Service Engineer(1) AdjustmentNote: DO NOT loosen the red screws on both sides of the main chassis, securing the carriage shaft positioning.*1: Red screws of paper feed motorThe red screws securing the paper feed motor may be loosened only at replacement of the paper feed motor unit.(2) Periodic maintenanceNo periodic maintenance is necessary.(3) Periodic replacement partsThere are no parts in this printer that require periodic replacement by a service engineer.(4) Replacement consumablesThere are no consumables that require replacement by a service engineer.AdjustmentTimingPurposeToolApprox. timeEEPROM initialization (EEPROM settings)At logic board ass'y replacementTo initialize settings other than the following:- USB serial number- Destination setting- Waste ink counter- CD-R correction valueNone.1 min.Destination settings (EEPROM settings)At logic board ass'y replacementTo set the destination.None.1 min.Waste ink counter resetting(EEPROM settings)- At bottom case unit replacement- At ink absorber (QC1-4221/ 4222 / 4223 / 4224 / 4263 / 4264 / 4864 / 4257) replacementTo reset the waste ink counter.None.1 min.CD-R sensor / automatic print head alignment sensor correction (EEPROM settings)- At logic board ass'y replacement- At carriage unit replacementTo correct the CD-R and automatic print head alignment sensor.None. (Correction performed through service test print)2 min.Print head alignment- At print head replacement- At logic board ass'y replacement- At carriage unit replacementTo ensure accurate dot placement.- None. (printer buttons)- Computer (settings via the printer driver)2 min.Paper feed motor position adjustment*1At paper feed motor unit replacementTo adjust the belt tension. (Position the paper feed motor so that the belt is stretched tight.)None.2 min.Grease application- At carriage unit replacement- At chassis' upper gear replacement- At shaft lift (QC1-4331) replacement- To maintain sliding properties of the carriage, carriage shaft, and shaft lift.- To protect the chassis' upper gear.- FLOIL KG-107A (QY9-0057)- MOLYKOTE HP300 (QY9-0035)1 min.1 - 1