Epson Stylus Scan 2000, Service Manual

Page: 129 / 264

EPSON Stylus Scan 2500 Revision A
Adjustment Using the Service-Adjustment Program 128
Figure 5-7. Bi-D ADjustment Pattern Sample
4. Looking at the printed patterns, determine which set is vertically aligned.
Enter the number of that set in the Bi-d Adjust dialog box. If no patterns are
vertically aligned, entered the number of the pattern that is most aligned.
Repeat this process until the lines are aligned, and then enter "y" in the
Current Value field.
5.3.5 Head Cleaning Operation
Unlike many previous models, the Stylus Scan does not have a dummy cleaning sequence
called CL3, which was performed to prevent ink from being unnecessarily consumed when
cleaning was repeated without any printout. However, Stylus Scan is alternatively equipped
with the strongest cleaning sequence CL2 contained in this adjustment program. With this
sequence, you can forcibly solve the clogged-nozzle problems that were caused by viscous
ink.
1. Enter the Production menu as described in “Using the Service-Adjustment
Program” on page 121.
2. On the Production menu (Figure 5-6), select Cleaning. Then click OK in
the dialog box that appears.
3. The printer enters the CL2 sequence.
5.3.6 Head Voltage ID Input
Head voltage value adjustment function enables you to write printhead ID. This operation is
considered the most important to maintain proper ink discharging system. If an ID is not
written correctly, it results in white or color lines and also cause wrong dot-weight errors.
This adjustment is required in the following cases.
Variable/Normal Bi-d = - n
Variable/Normal Bi-d = 0
Variable Bi-d = n
Left
gap
Right
gap
If you cannot recover the clogged nozzles even after performing the
CL2 operation, enter the Initial ink charge sequence by referring to
“Initial Ink Charge Operation” on page 127.
The CL2 cleaning operation takes 60 seconds to complete.
1. When exchanging the main board
2. When exchanging the printhead
3. When exchanging the printer mechanism