Epson WorkForce 600 - Page 70

EPSON WorkForce 600/EPSON Stylus OFFICE TX600FW/BX600FW/EPSON Stylus SX600FW/ME OFFICE 700FW Revision A
TROUBLESHOOTING Error Indications and Fault Occurrence Causes 71
Confidential
• White streak /
abnormal discharge
Ink is ejected to the Cap from the Print
Head, but printing is not done at all after
cleaning or ink change, or abnormal
discharge occurs.
Head FFC
1. Check if the Head FFC is securely connected to the Print
Head Connectors and the Main Board Connectors (CN4,
CN5, and CN21).
1. Connect the Head FFC to the Print Head and
the Main Board Connectors.
2. Check if the Head FFC is not damaged. 2. Replace the Head FFC with a new one.
Print Head
1. Check if it returns to normal by performing CL operation
or replacing the Ink Cartridge.
1. Perform CL operation and the Ink Cartridge
replacement specified times. If it doesn’t work,
change the Print Head with a new one.
Main Board Unit 1. Check if the Main Board is not damaged. 1. Replace the Main Board Unit with a new one.
• White streak / color
unevenness
occurrence
Vertical banding appears against the CR
movement direction. And, it looks like
uneven printing.
[Note]
If the problem is not solved, replace the
CR Motor with a new one.
Adjustment
1. For printing in the Bi-D mode, check if Bi-D Adjustment
has been performed properly.
1. Perform Bi-D Adjustment to correct print start
timing in bi-directional printing. (Refer to
Chapter 5 “ADJUSTMENT” (p.150).)
Print Head
1. Check if the Nozzle Check Pattern is printed properly. 2. Perform Head Cleaning and check the Nozzle
Check Pattern. (Refer to Chapter 5
“ADJUSTMENT” (p.150).)
If the problem is not solved, replace the Print
Head with a new one.
Main Frame
1. Check if there is any foreign material on the Carriage
path.
1. Remove foreign material from surface of the
Carriage path.
2. Check if the Main Frame is deformed. 2. Replace the Main Frame with a new one.
3. Check if the grease is enough on the Carriage path of the
Main Frame.
3. After wiping the grease G-71 on the Carriage
path with a dry, soft cloth, coat it with grease.
(Refer to Chapter 6 “MAINTENANCE”
(p.163).)
Table 3-25. Check point for the defective printing quality
Print Quality State Detailed phenomenon
Defective
unit/part name
Check point Remedy
Print Head
Connector
CN5
Head FFC
CN4
CN21
CR movement
direction