Ricoh D124-17 Service Manual page 602

6. Troubleshooting
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• Feeler cannot be detected because it is out of position (loose, broken,
defective, or blocked by an obstruction)
• Air release solenoid blocked
• Maintenance unit defective
• Print head ink tank defective
• Air release solenoid defective
D Ink Level Feeler Error 4: All Feelers
All ink level sensor feelers were not detected.
• Feeler cannot be detected because it is out of position (loose, broken,
defective, or blocked by an obstruction)
• Maintenance unit defective
• Print head ink tank defective
• Air release solenoid defective
D Supply Pump Suction Timeout Errors
The supply pump motor reversed to apply negative pressure, but the sensor
failed to detect one or more feelers at the prescribed positions, so pressure
could not be detected as normal. Problem may be cause by
• An air leak
• Clogged tubing between the supply pump and print head
• Failure to purge air from the tank
• A broken or defective feeler
• Feeler broken, damaged, or blocked
• Air release solenoid blocked
• Air release solenoid defective
• Ink supply pump or tube defective
D Head 1: Air Leak Error
D Head 2: Air Leak Error
D Head 3: Air Leak Error
D Head 4: Air Leak Error
D Head 5: Air Leak Error