Ricoh D124-17 Service Manual page 537

2. Select the print head where the pattern is broken, and then touch [Start]. A message asks you to
wait while the print head is flushing. Flushing a print head requires about 3 min.
3. When the message tells you that the flushing is completed, touch [Exit].
4. The display will loop back to the Maintenance Menu. Touch [Print Nozzle Check Pattern] to print
another Nozzle Check Pattern.
5. If the pattern is still broken after three cleanings and one flushing, go to the next section.
When Printing Cannot Be Restored
Do this procedure if three cleanings and one flushing have failed to produce an unbroken Nozzle
Check Pattern.
1. Make sure that the ambient temperature and humidity are within the acceptable range:
• Temperature Range: 10°C to 27°C (50 °F to 81°F)
• Humidity Range: 15% to 80% Rh
2. Clean the print heads once, and then print a Nozzle Check Pattern.
3. If the Nozzle Check Pattern is abnormal, let the machine remain idle for 10 minutes.
4. Execute two more cleanings and one flushing.
• Be sure to print a Nozzle Check Pattern after each cleaning and the flushing.
• Once you have produced an unbroken Nozzle Check Pattern, you can stop.
5. After the flushing, if the Nozzle Check Pattern is still not perfect, let the machine remain idle for 8
hours.
6. Execute three more cleanings and one flushing.
• Be sure to print a Nozzle Check Pattern after each cleaning and the flushing.
• When you have produced an unbroken Nozzle Check Pattern, you can stop.
7. If the Nozzle Check Pattern is still unsatisfactory:
Print Head Cleaning and Adjustment
535