Epson R220 - Stylus Photo Color Inkjet Printer, Service Manual

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EPSON Stylus Photo R220/R230 Revision A
TROUBLESHOOTING Unit Level Troubleshooting 33
Table 1-25. Status and Possible Causes of Print Quality Problems
Error Status
LED Indication
STM3 Message
Occurrence
Timing
Phenomenon Faulty Unit/Part Name Possible Causes Remedy
Defective Print
Quality
During operation -
Dot missing
No printing
Alignment failure
Mixing-up the different
types of inks
Ink System
Adherents on the Sealing Rubber.
Or the Sealing Rubber is damaged.
Refer to
Table 1-26
The Compression Spring, 2.53 under the cap comes off.
The Pump Tubes are disconnected from the bottom of the
Cap.
The Extension Spring, 0.788 for the Slider Cap comes off.
The Extension Spring, 0.441 for the Slider Lock Lever
comes off.
The Slider Lever is damaged.
Ink Cartridges Remaining ink in the cartridge is low.
Main Board Main Board failure
Print Head
Adherents are on the Print Head.
The Print Head is faulty.
The Head FFC is damaged.
Vertical bands
CR Motor Accuracy of the CR Motor deteriorates.
Carriage Unit
the CR Guide Shaft is dirty or damaged.
Lubrication is insufficient.
The Fixed Spring, CR Guide Shaft comes off.
Frame EJ Assy.
The Frame EJ Assy. is deformed (Lower or Upper side
warpage).
Print Head Nozzle pitches become misaligned.