Service manual

EPSON Stylus Photo 870/1270 Revision B
ADJUSTMENT Overview 117
5.1 Overview
This chapter describes adjustments required after you disassemble or
replace Stylus Photo 870/1270.
5.1.1 Adjustment Items
Table 5-1 lists the required adjustments. Be sure to make the adjustments
by carefully following the indicated order and observing the instructions
given in the figures.
The table below lists the type of repair and required adjustments in the
order to be made.
Table 5-1. Adjustment Item
No. Item When to perform
1
Parallelism Adjsutment
• When you replace or remove the
carriage guide shaft.
• When you replace or remove the
parallelism adjustment bushing.
2
Backlash Adjsutment
• When you replace the PF motor.
• When you remove the Gear 76.
3
Initial ink charge
• When you replace or remove the
printhead.
4
Head voltage ID input
• When you replace the printhead.
• When you replace the main board.
NOTE:
New head ID is not written
until EEPROM is reset.
5
Head angular
adjsutment
• When you replace or remove the
printhead.
• When you change the printhead
angular adjusting lever position.
6
Bi-Directional
adjustment
• When you replace the printhead.
• When you replace the main board.
• When you replace the CR motor
assembly.
• When you remove the carriage unit.
7
USB ID check/input
• When you replace the main board.
8
Protection counter check
• When you replace the waste ink pad.
Table 5-2. Type of Repair and Required Adjustment
No. Type of repair Required adjustment
1 Printhead removal
1.
Initial ink charge
2.
Head angular adjsutment
3.
Bi-Directional adjustment
2 Printhead replacement
1.
Head voltage ID input
2.
Initial ink charge
3.
Head angular adjsutment
4.
Bi-Directional adjustment
3 Main board replacement
1.
Head voltage ID input
2.
Bi-Directional adjustment
.
3.
USB ID check/input
4
Carriage unit replacement or
removal
1.
Parallelism Adjsutment
2.
Head angular adjsutment
3.
Bi-Directional adjustment
5 CR Motor replacement 1.
Bi-Directional adjustment
6 Printer mechanism replacement
1.
Head voltage ID input
2.
Initial ink charge
3.
Bi-Directional adjustment
7
Replacement or removal of the
following parts.
1) PF motor
2) Gear 76
3) PF roller assembly
1.
Backlash Adjsutment