Epson Stylus NX105 Service Manual page 49

Epson STYLUS NX100/NX105/SX100/SX105/TX100/TX101/TX102/TX103/TX105/TX106/TX109/ME 300
Print Quality State Detailed phenomenon
Ink is ejected to the Cap from the
• White streak /
Printhead, but printing is not done at all
after cleaning or ink change, or
abnormal discharge
abnormal discharge occurs.
Vertical banding appears against the CR
movement direction. And, it looks like
uneven printing.
CR movement
direction
• White streak / color
unevenness
occurrence
[Note]
If the problem is not solved, replace the
CR Motor with a new one.
TROUBLESHOOTING
Table 3-12. Check point for the defective printing quality
Defective
unit/part name
1. Check if the Head FFC is securely connected to the
Printhead Connectors and the Main Board Connectors.
(J8, J9)
Printhead
Head FFC
Connector
2. Check if the Head FFC is damaged.
1. Check if it returns to normal by performing CL operation
Printhead
or replacing the Ink Cartridge.
Main Board Unit 1. Check if the Main Board is damaged.
1. For printing in the Bi-D mode, check if Bi-D Adjustment
Adjustment
has been performed properly.
1. Check if the Nozzle Check Pattern is printed properly.
Printhead
1. Check if there is any foreign material on the Carriage
path.
2. Check if the Main Frame is deformed.
Main Frame
3. Check if the grease is enough on the Carriage path of the
Main Frame. (TBD)
EJ Frame Assy 1. Check if the EJ Frame is deformed.
Error Indications and Fault Occurrence Causes
Check point
1. Connect the Head FFC to the Printhead and the
J9 J8
Head
FFC
2. Replace the Head FFC with a new one.
1. Perform CL operation and the Ink Cartridge
1. Replace the Main Board Unit with a new one.
1. Perform Bi-D Adjustment to correct print start
2. Perform Head Cleaning and check the Nozzle
1. Remove foreign material from surface of the
2. Replace the Main Frame with a new one.
3. After wiping the grease G-71 on the Carriage
1. Replace the EJ Frame Assy with a new one.
Revision A
Remedy
Main Board Connectors.
replacement specified times. If it doesn't work,
change the Printhead with a new one.
timing in bi-directional printing. (Refer to
Chapter 5 "ADJUSTMENT" (p.100).)
Check Pattern. (Refer to Chapter 5
"ADJUSTMENT" (p.100).)
If the problem is not solved, replace the
Printhead with a new one.
Carriage path.
path with a dry, soft cloth, coat it with grease.
(Refer to Chapter 6 "MAINTENANCE"
(p.108).) (TBD)
Confidential
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