Adjustment Items And Overview; Servicing Adjustment Item List - Epson Stylus Photo 1390 Service Manual

EPSON Stylus Photo 1390/1400/1410

5.1 Adjustment Items and Overview

This chapter describes the adjustments to be made after the disassembly/reassembly of this product.

5.1.1 Servicing Adjustment Item List

The following table describes the items, purposes and outlines of the Adjustment Program.
Adjustment
PF Belt Tension To reduce the load on the PF motor and to ensure paper feeding accuracy.
Adjustment
PF Roller Shaft Center To compensate the deflection amount on the PF Roller Shaft and to
Support Position maintain the appropriate paper feeding amount.
Adjustment
PG Adjustment To ensure the correct distance between the head surface and the Front
Paper Guide, and to adjust the parallelism between the 0 digit side and the
130 digit side to ensure consistent print quality.
Main Board Data To read the required information from EEPROM on a defective Main
Read/Write Board using the D4 function and to reduce the number of ancillary
adjustment items when the board is replaced.
Market & Initial Settings To write the common information to the Main Board by the different
market settings, when the Main Board is replaced.
USB ID Input To identify the specific printer when using multiple printers of the same
model, an USB ID is given to each printer.
Head ID Input To reduce head manufacturing variations, which may cause individual
differences in print quality, when the Printhead is replaced.
Head Angular Adjustment To correct the error in the Printhead mounting position (Head angle) to
make the nozzle line straight with respect to the paper feeding direction.
Angular displacement is also checked for.
Bi-D Adjustment To correct the print timing in the go and return paths in bi-directional
printing.
ADJUSTMENT
Table 5-1. Adjustment Items
Purpose
Adjustment Items and Overview
Method Outline
See Section 5.2.1 "PF Belt Tension Adjustment" on page 137.
See Section 5.2.3 "PF Roller Shaft Center Support Position Adjustment" on page 144.
See Section 5.2.2 "PG Adjustment" on page 139.
1. Select this function in the Adjustment Program.
2. Read data from the defective Main Board.
3. After replacing the Main Board, write the data to the new board.
1. Select and execute this function in the Adjustment Program.
2. Write the market-by-market settings and initial settings to the EEPROM.
Market-by-market settings
Market ID
CSIC Printer ID
1. Select this function in the Adjustment Program and enter the serial number of the printer.
2. The correction value is saved to the specific EEPROM address of the Main Board.
1. Enter the ID of the Head QR Code Label (24 digits), which is applied to the Printhead, into
the program.
2. The ID is stored in the EEPROM of the Main Board.
Supplement: Read the QR code label from left to right on the top row and from top to bottom
in due order.)
1. Select this function in the Adjustment Program and print the adjustment pattern.
2. After checking the displacement amount of the pattern, enter the pattern number which has
the smallest amount of displacement.
Use the adjustment program to print out the adjustment pattern, and enter the adjustment value
of the printed pattern with no black/white streaks in the block.
Revision B
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