Remedies For Print Quality Troubles - Epson SC-F2000 Service Manual

SC-F2000

2.4 Remedies for Print Quality Troubles

This section provides troubleshooting of print quality troubles classifying them by observed symptom. Before performing troubleshooting, refer to
nozzle check pattern. Examine the printed pattern, and if any missing segment is found, perform the Print Head cleaning.
Symptom
The nozzles are still clogging after
cleaning.
Horizontal or vertical lines look
misaligned.
TROUBLE SHOOTING
Table 2-2. Print Quality Troubles
Cause
1. Is the wiper contaminated?
The wiper is contaminated or wiping
the PRINT HEAD is not performed 2. Is the wiper cleaner damaged?
properly.
3. Check if the cloth wiper is taken up.
The Suction Cap and Cap (PUMP CAP
Is the Cap contaminated?
ASSY) are contaminated.
There is a foreign material on the
Is there any foreign material on the PRINT HEAD?
PRINT HEAD.
There is something wrong in the pump
Is the pump tube bent or getting caught between
tube and the cleaning (suctioning of
surrounding parts or components?
ink) is not performed properly.
The ink is leaking. Is there any ink leakage observed in the ink flow paths?
There are some bubbles inside the ink
Are there any bubbles observed in the ink flow paths?
path.
Is the HEAD FFC connected properly? Check for
The HEAD FFC is not connected
abnormalities such as a ripped terminal cover or slant
correctly.
connection.
If any of the remedies above does not help, replace the following parts one by one.

DAMPAR KIT. (Page 104)

PRINT HEAD. (Page 109)

MAIN BOARD (The fuse may have blown)
Have the following adjustments been made properly?

The PRINT HEAD is not adjusted
properly.

1. Is the height of Platen adjusted properly with the Height
PG is not adjusted properly.
2. Is Bi-D adjusted properly?
Remedies for Print Quality Troubles
Check Item
(Page 95)
ANGULAR ADJUST AND CHECK HORIZONTAL
(Head Inclination Adjustment)
ADJUST AND CHECK HEAD VERTICAL (Head
Slant Adjustment)
Adjustment Lever?
Revision C
and print
"Nozzle Check" (p237)
Remedy
Replace the WIPER UNIT. (Page 70)
1. Clean the Suction Cap. (Page 291)
2. Replace the Cap (PUMP CAP ASSY).
143)
Remove the foreign material.
Correct the routing of the pump tube, if necessary.
If any leakage is found, correct it.
Run a head cleaning. (Page 238)
1. Reconnect the HEAD FFC.
2. If the error persists, the HEAD FFC may be
broken. Replace the HEAD FFC. (Page 127)
Carry out the adjustments if it is not adjusted
properly.

ANGULAR ADJUST AND CHECK
HORIZONTAL (Page 239)

ADJUST AND CHECK HEAD VERTICAL
(Page 243)
1. Perform the ADJUST PG. (Page 246)
Confidential
(Page
45