Print Adjustment; Printhead Slant Adjustment - Epson SQ-1170 Service Manual

REV.-A

4.5 PRINT ADJUSTMENT

The print adjustment can be divided into the printhead inclination adjustment and print position
adjustment. These adjustments can be performed by running the special program on the personal
computer (EPSON PC/EQUITY or 100% IBM PC compatible machine) connected to the printer.

4.5.1 Printhead Slant Adjustment

If the printhead is not installed at the right angle to the carriage, the characters will not be printed at
the right angle.
This adjustment is performed to correct the installation angle of the printhead.
When you reinstall the printhead or when the characters printed are not at the right angle, you should
perform this adjustment by turning the PIN, ADJUST on the carriage while checking the output.
I
When you turn the PIN, ADJUST for inclination adjustment, first loosen the screw on the righthand
side to unfasten the printhead, or the PIN, ADJUST may be damaged.
[Step 1] Load 15-inch continuous paper (for 136-column printer) or 10-inch continuous paper (for
80-column printer) to the front push tractor.
2]
[Step Open the upper case and set the control panel so that CASE OPEN will not be detected. (Refer
to Section 5.1 for the details.)
Connect the printer to the personal computer and turn on the printer power.
[Step 3]
[Step 4] Turn on the power for the personal computer and start the adjustment program (Program
name: F30B01 A (GW-BASIC)).
When "CHANGE DATE?" is displayed on the screen, enter N.
[Step 5]
When "ADJUST... 1, RESET...2° is displayed, select "ADJUST" by entering " 1".
[Step 6]
[Step 7] When "80 COLUMN... 1, 136 COLUMN...2° is displayed, select 80 column or 136 column
for your machine.
[Step 8] When "BI-D...1, HEAD TILT...2, END...E" is displayed, select "HEAD TILT" by entering "2".
[Step 9] When "PRINTER No.?" is displayed, enter the applicable printer number and press the return
key.
[Step 10] When the check pattern of a vertical line is printed, verify it. If the check pattern looks like ";'
(a), press the return key to print the final check pattern and finish the adjustment. If it looks
like (b) or (c), continue the following steps.
(a) Acceptable
CAUTION
(b) Not acceptable
Figure 4-8. Print Check Pattern
4-8
(c) Not acceptable