Print Position Adjustment - Epson SQ-1170 Service Manual

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[Step 1 1] Center the carriage and loosen the screw (fastening the printhead)on the righthand side. Then,
holding the head with the hand, turn the PIN, ADJUST. The PIN, ADJUST can be turned to
5 different positions.
[Step 12] Turn the PIN, ADJUST to a proper position and tighten the screw loosened in Step 10.
[Step 13] Press the SPACE key and print the check pattern again. If the check pattern is acceptable,
press the return key to print the final check pattern and finish the adjustment. If not
acceptable, go back to Step 12.
4.5.2

Print Position Adjustment

This adjustment is performed on the control circuit to compensate the deviation of print position, which
may be caused by the different printing speeds due to the parts tolerance of the printer mechanism,
and the deviation of print timing between odd-numbered lines and even-numbered lines in bi-directional
print. This printer stores the compensation-related data in EEPROM on the MAIN board. You should
perform this adjustment in the following conditions.
The
MAIN board is replaced.
cartridge replacement counter is cleared, i.e. the contents of EEPROM is cleared.
. The
printer mechanism is replaced.
timing belt is removed or loosened.
[Step 1] Load 15-inch continuous paper (for 136-column printer) or 10-inch continuous paper (for
80-column printer) to the rear push tractor.
[Step 2] Connect the printer to the personal computer and turn on the printer power.
[Step 3] Turn on the power for the personal computer and start the adjustment program (Program
name: F30B01 A (GW-BASIC)).
[Step 4] When "ACHANGE DATE?" is displayed on the screen, enter N.
[Step 5] When "ADJUST... 1, RESET...2° is displayed, select "ADJUST" by entering "1".
Figure 4-9. Head Inclination Adjustment
4-9
Printhead
inthead Fixed
PIN, ADJUST
Screw

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Sq-870

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