Epson Stylus Color 760, Service Manual

Page: 110 / 172

EPSON Stylus COLOR 760 Revision C
Adjustment Overview 110
5.1 Overview
This chapter describes adjustments required when the printer is
disassembled and assembled after repair.
Additionally, this section describes the PF motor Loop scale unit
assembling procedure required when the PF Loop scale or Gear 76 is
replaced to new one.
5.1.1 Required Adjustments
The Stylus COLOR 760 require the following adjustments. (Refer to
Table 5-1) Perform any necessary adjustment referring to the figures
and procedures described throughout this chapter.
Table below shows the actions taken and required adjustments in the
order to be performed.
Table 5-1 Adjustment Required
No. Adjustment Item Conditions
1 Parallelism Adjustment • When you replace or remove the Carriage
guide shaft.
• When you move the parallelism adjustment
bushing.
2 Backlash value
Adjustment • When you replace the PF motor or Gear 76.
4 Initial Ink Charge • When you replace or remove the printhead.
5 Head Voltage ID Input • When you replace the printhead.
• When you replace the main board.
Note) The head ID values stored in the EEPROM
are not erased by EEPROM reset operation.
6 Printing Head Angle
Adjustment • When you replace or remove the printhead.
• When you move the printhead angle adjusting
lever.
7 Bi-D Adjustment • When you replace or remove the printhead.
• When you replace the main board.
• When you replace the CR Motor.
8 USB ID data Input • When you replace the main board.
9 Protection counter reset • When you replace the waste ink pad.
Table 5-2 Actions Taken and Adjustment Required
No. Content of Operation Adjustment Procedure
1 Removal of the printhead 1. Perform initial ink charge.
2. Perform printhead angle adjustment.
3. Perform Bi-d Adjustment.
2 Replacement of the printhead 1. Perform the initial ink charge
1. Perform Head voltage ID writing
operation.
2. Perform printhead angle adjustment.
3. Perform Bi-d Adjustment.
3 Replacement of the main board 1. Perform Head voltage ID writing
operation.
2. Perform Bi-d adjustment.
3. USB ID input
After perform the above adjustments,
replace the following parts.
1) Ink Cartridge.
2) Waste Ink Pad.
Above two kinds of the counter are
erased by replacing the Main board.
4 Replacement or Removal of the
Carriage Unit 1. Perform parallel adjustment.
2. Perform printhead angle adjustment.
3. Perform Bi-d adjustment.
5 Replace of the CR Motor 1. Perform Bi-d adjustment.
6 Replacement of the Printer
Mechanism 1. Perform Head Voltage ID Input.
2. Perform initial ink charge.
3. Perform Bi-d adjustment.
7 Replacement or removal of the
following parts.
1) PF motor
2) Gear 76
3) PF roller assembly (Gear 76 &
Loop scale are assembled with PF
roller)
1. Perform the Backlash Adjustment.