Adjustment Items And Overview; Servicing Adjustment Item List - Epson Stylus CX7300 Service Manual

EPSON Stylus CX7300/CX7400/DX7400/NX200/TX200 series/SX200 series/Stylus CX8300/CX8400/DX8400/NX400/TX400 series/SX400 series Revision C

5.1 Adjustment Items and Overview

This chapter describes adjustments required after the disassembly/reassembly of the
printer.

5.1.1 Servicing Adjustment Item List

The adjustment items of this product are as follows.
Adjustment Item
When the main board needs to be replaced, use this to copy adjustment
values stored on the old main board to the new board. If this copy is
EEPROM data copy
completed successfully, all the other adjustments required after replacing the
main board are no longer be necessary.
This must be carried out after replacing the main board to apply settings for
Initial setting
the target market.
This sets a USB ID of the printer. A computer identifies the printer by the ID
USB ID input
when multiple same models are connected via a USB hub.
This must be carried out after replacing the Printhead in order to enter the
Head ID input
new Printhead ID (Head ID) that reduces variation between Printheads.
This corrects top margin of printout.
TOP margin
adjustment
This corrects left margin of printout. The print start position in the carriage
First dot position
moving direction is corrected by software.
adjustment
Head angular This must be carried out after replacing the Printhead in order to correct tilt
adjustment of the Printhead by software.
This corrects print start timing in bi-directional printing to improve the print
quality.
Bi-D adjustment
Initialize PF This resets the counter to maintain paper feed accuracy which decreases due
deterioration offset to paper dust.
Disenable PF When reading the counter value from the old main board is impossible in the
deterioration offset case of replacing the board, use this to set the counter to its maximum value.
This must be carried out for efficient heat control of the CR motor.
CR motor heat
Electrical variation of the motor and the power supply board are measured to
protection control
acquire correction values for them.
ADJUSTMENT
Table 5-1. Adjustment Items
Purpose
Adjustment Items and Overview
For information on how to carry out the adjustments and media
C H E C K
required for the adjustments, see the instructions displayed by the
P O I N T
Adjustment Program.
Method Outline
Readout the EEPROM data from the main board before removing it.
Then replace the board with a new one, and load the EEPROM data to
the new board.
Select the target market. The selected market settings are
automatically written to the main board.
Enter the product serial number of the printer. The ID is automatically
generated and written to the main board.
Enter the ID printed on the Head QR code label attached on the
Printhead. The correction values are automatically written to the main
board.
A top margin adjustment pattern is printed. Examine the lines printed
near the top edge of the printout, and enter the value for the line that
is exactly 3 mm away from the top edge.
A first dot adjustment pattern is printed. Examine the lines printed
near the left edge of the printout and enter the value for the line that is
exactly 5 mm away from the left edge.
A head angular adjustment pattern is printed. Examine the printed
lines and enter the value for the most straight lines.
A Bi-D adjustment pattern is printed. Black and color patterns are
printed for each of the five dot sizes (ECO, VSD1, VSD2, VSD3,
VSD4). So, there are 10 groups. Examine the patterns and enter the
value for the pattern with no gap and overlap for each mode.
Reset the counter to its default.
Set the counter to tis maximum value (10000).
Select the parts that you replaced. The correction values are
automatically written to the main board.
Tool
• Adjustment Program
• Adjustment Program
• Adjustment Program
• Adjustment Program
• Adjustment Program
• Ruler
• Adjustment Program
• Ruler
• Adjustment Program
• Adjustment Program
• Adjustment Program
• Adjustment Program
• Adjustment Program
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