Color Inkjet Printer Service Manual

EPSON Stylus Photo R300/R310 Revision A
ADJUSTMENT Adjustment Items and Overview 80
3.1 Adjustment Items and Overview
This chapter describes adjustments to be made after the disassembly/reassembly of this product.
3.1.1 Servicing Adjustment Item List
The adjustment items of this product are as follows. For details of the adjustment items, refer to the detailed procedures and sketches of the adjustment items.
Table 3-1. Adjustment Items
Function Item Purpose Method Outline Tool Used Media
Adjustment items
Market Setting At the time of Main Board replacement, this adjustment is made
to write the board common information on a destination basis.
Select and execute this function in the exclusive servicing program to
save the following data into the EEPROM.
Market ID, CSIC Printer ID, D4 Setting (USB, Parallel), First Dot
Adjustment fixed value.
Exclusive
servicing
program
Non-target
USB ID Input This adjustment is made to allow the PC to recognize the
connected printers individually when multiple printers of the
same model are connected and used with the PC via a USB hub.
Select this function in the exclusive servicing program and enter the
serial numbers of the printers. The correction value is saved to the
specific EEPROM address on the Main Board.
Exclusive
servicing
program
Non-target
Head ID Input At the time of Print Head replacement, this adjustment is made
to correct head manufacturing variations and eliminate the
individual differences of print quality.
Enter the ID of the Head QR code label applied to the Print Head into
the exclusive servicing program to save it to the EEPROM on 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.)
Exclusive
servicing
program
Non-target
Head Angular
Adjustment
This adjustment is made to correct the error in the Print Head
mounting position (angle of the Print Head to the paper surface)
to keep the nozzle intervals uniform in the CR main scanning
direction.
Select this function in the exclusive servicing program and print the
adjustment pattern. Check the displacement amount of the pattern.
Print the exclusive pattern again and adjust the displacement amount.
Exclusive
servicing
program
Photo
Quality Ink
Jet Paper
(A4)
Bi-D Adjustment This adjustment is made to correct the print timing in the go and
return paths in bi-directional printing.
(This printer carries out printing with PG (typ.) and PG (-))
Select this function in the exclusive servicing program and print the
adjustment patterns to check the displacement amounts of the patterns.
Select/enter the pattern number that has the smallest displacement
amount in the program. Print the exclusive patterns again and adjust
the displacement amount. The correction value is saved into the
EEPROM.
Exclusive
servicing
program
Plain paper
(A4)
PW Sensor
Adjustment
This adjustment is made to correct the mounting position of the
PW Sensor on a software basis to minimize the paper detection
error caused by the variations of the mounting position.
Select this function in the exclusive servicing program and print the
adjustment patterns. Select the pattern number 5mm away from each
edge, and enter that number in the program. The correction value is
saved to the specific EEPROM address on the Main Board.
Exclusive
servicing
program
Photo Paper /
Glossy Photo
Paper (A4)