Epson SC-T7000 series Service Manual page 214

SC-T7000 series/SC-T5000 series/SC-T3000 series
Class Adjustment Items
APG function check Refer to CR related.
Corrects inclination of the PRINT HEAD in the
CR direction. An adjustment pattern is printed
Head inclination auto and the IM SENSOR scans the pattern. Based on
adjustment the scanned result, a number of steps to move the
(CR direction) cam for the adjustment is displayed. Turn the
cam the number of steps to correct the head
inclination.
Corrects slant of the PRINT HEAD in the PF
direction. An adjustment pattern is printed and
Head slant auto the IM SENSOR scans the pattern. Based on the
adjustment scanned result, a number of steps to move the
(PF direction) lever for the adjustment is displayed. Move the
lever the number of steps to correct the head
slant.
Head related Correct inclination of the PRINT HEAD in the
Head inclination CR direction. Print an adjustment pattern, and
manual adjustment visually check the pattern to see if the adjustment
(CR direction) is needed. To correct the head inclination, turn
the cam.
Correct slant of the PRINT HEAD in the PF
Head slant manual direction. Print an adjustment pattern, and
adjustment visually check the pattern to see if the adjustment
(PF direction) is needed. To correct the head slant, move the
lever.
Auto Uni-d adjustment Refer to CR related.
Auto Bi-D adjustment,
acceleration and Refer to CR related.
deceleration correction
ADJUSTMENT
Table 4-2. Adjustment Items
Overview Symptoms that the Adjustment is Needed
If this adjustment is not made, print quality
problems such as misaligned lines, grainy image,
banding, or color unevenness may occur in the
scale of PRINT HEAD surface area.
If this adjustment is not made, the gap between the
PRINT HEAD surface and paper is kept uneven
(e.g.: the gap at the front side is wider than that at
the rear side), and causes irregularity in size and
position of printed dots. This may be observed as
print quality problems such as grainy image,
banding, or color unevenness.
If this adjustment is not made, print quality
problems such as misaligned lines, grainy image,
banding, or color unevenness may occur in the
scale of PRINT HEAD surface area.
If this adjustment is not made, the gap between the
PRINT HEAD surface and paper is kept uneven
(e.g.: the gap at the front side is wider than that at
the rear side), and causes irregularity in size and
position of printed dots. This may be observed as
print quality problems such as grainy image,
banding, or color unevenness.
Overview
Service
Printer Mode Jig Media
Program
Premium
Glossy
Normal
√
Photo
mode
Paper
(250)
Premium
Glossy
Normal
√
Photo
mode
Paper
(250)
Premium
Glossy
Normal
√
Photo
mode
Paper
(250)
Premium
Glossy
Normal
√
Photo
mode
Paper
(250)
Revision B
Page
p. 253
p. 256
p. 254
p. 257
214
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