Adjustment Items And Overview; Servicing Adjustment Item List; Correction - Epson L800 Service Manual

L800/L801

2.1 Adjustment Items and Overview

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

2.1.1 Servicing Adjustment Item List

The adjustment items of this product are as follows.
Adjustment Item
Install the Head Nozzle surface parallel to the printing surface and set
the gap between the paper and the Head Nozzle surface to the specified
PG adjustment
value.
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 the target market. When this function is performed, the
upper limit value of the ink tube counter is automatically set. With this
Initial setting
function, the serial number written on the main board can be checked,
and also writing the serial number to the main board can be performed
when replacing the board.
This must be carried out after replacing the printhead in order to enter
Head ID input the new printhead ID (Head ID) that reduces variation between
printheads.
Initialize PF deterioration Resets the counter to maintain paper feed accuracy which decreases
offset due to paper dust.
When reading the counter value from the old main board is impossible
Disenable PF deterioration
in the case of replacing the board, use this to set the counter to its
offset
maximum value.
This corrects top margin of printout.
TOP margin adjustment
Adjustment
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Table 2-1. Adjustment Items
Purpose
Adjustment Items and Overview
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C H E C K For information on how to carry out the adjustments and
P O I N T
media required for the adjustments, see the instructions
displayed by the Adjustment Program.
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Some pictures in this manual are for Epson Stylus Photo R280/
R285/R290; therefore, the shapes of the parts are different
from those of L800/L801, but the differences does not affect the
adjustment procedures.
Method Outline
Mechanical adjustment using the thickness gauges. Make a proper
adjustment according to the result whether the manually-moved
carriage (printhead) runs over or hits against the gauges placed on the
platen.
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.
When writing the serial number, enter and re-enter (for confirmation)
the printer serial number, then press the input button.
Enter the ID printed on the Head QR code label attached on the
printhead. The correction values are automatically written to the main
board.
Reset the counter to its default.
Set the counter to its maximum value (3000).
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.
Revision A
Tool
• Thickness Gauge
1.15 mm, 1.3 mm
• Adjustment Program
• Adjustment Program
• Adjustment Program
• Adjustment Program
• Adjustment Program
• Adjustment Program
• Ruler
70
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