Service manual

Epson Stylus Photo PX650/TX650/TX659/PX660/PX660 Premium/Artisan 635 Revision C
ADJUSTMENT Banding Reduction System (BRS) Adjustment/Paper Feed Amount Profile (PFP) Correction 123
Confidential
 Adjustment Flow
Carry out the adjustment following the adjustment flow below.
Figure 5-12. BRS/PFP Adjustment Flow
Note*: When a PFP pattern is judged as NG, repeat the steps as described below.
First time NG: retry from (1) step
Second time NG:retry from (2) step
Third time NG: perform (3) step
C H E C K
P O I N T
When performing PFP adjustment only without BRS adjustment,
start adjustment from step (2) in Fig5-12 .
START
Error?
END
(1) (2) (3)
*
(1)
(2)
Judge it is mechanism’s
failure. Remove it to
locate the defective part
and replace, then
reassemble it.
(3)
Error?
NG
NG
NG
OK
OK
OK
Printing the BRS
Adjustment Pattern
Scanning the BRS
Adjustment Pattern
Printing the PFP
Adjustment Pattern
Scanning the PFP
Adjustment Pattern
Printing the PFP Check
Pattern
Judging the Check
Pattern
C H E C K
P O I N T
When an error is displayed in the Adjustment program, check the
points below, then carry out the adjustment again. If an error
occurs even after checking the points below, change the scanner
with a different one and carry out the adjustment again.
1. Check that the printer that printed the pattern and the printer
to register the adjustment value is the same.
2. Check that the printed pattern is placed on the document table
of the scanner correctly.
3. Check that there is no gap between the PFP Base Scale and the
pattern printed sheet.
4. Check that the scanner glass surface and the PFP Base Scale is
free from any dirt or dust.