Epson Stylus C87, Service Manual

Page: 83 / 109

EPSON Stylus C87/C88/D88 Revision A
ADJUSTMENT Adjustment Items and Overview 83
Table 5-2. Maintenance Functions
Function Item Purpose Adjustment Outline Tool
Used
Media
Maintenance items
Waste ink pad
counter This function is used after repair to read the Waste ink
counter, and if the value is close to the predetermined near-
end value or end value, to recommend Pad replacement to the
user in order to prevent the repaired printer from being
returned again for repair in a short time. The reset function is
used to reset the Waste ink counter from the exclusive
program after Waste ink pad replacement. Select this function in the exclusive servicing program, read/display the
current data from the specific EEPROM address on the Main board, and
check whether the current counter value is close to the upper limit or not.
For the reset function, select this function in the exclusive servicing
program after Waste ink pad replacement, and reset the corresponding
data at the specific address in the EEPROM on the Main board. Exclusive servicing
program Non-target
EEPROM data
copy This function is used to read the above necessary information
from the EEPROM of the faulty Main board using the D4
function to reduce the auxiliary adjustment items at the time
of Board replacement. Select this function in the exclusive servicing program, and read the data
from the faulty board. After that, change the Main board and then write
the read data to a new board. Exclusive servicing
program Non-target
Table 5-3. Check Pattern Printing
Function Item Purpose Adjustment Outline Tool
Used
Media
Check pattern
items
A4 Photo Quality
Ink Jet Paper
print This pattern is used to check whether all adjustment results
are normal. Select this function in the exclusive servicing program, print the print
patterns, and check the adjustment result in each pattern. Exclusive servicing
program Photo
Quality Ink
Jet Paper
(A4)
A4 Normal Paper
print This pattern is used to check whether all adjustment results
are normal. Select this function in the exclusive servicing program, print the print
patterns, and check the adjustment result in each pattern. Exclusive servicing
program Plain paper
(A4)
Nozzle check
pattern print This pattern is used to check simply whether all nozzles
deliver ink or not. This pattern is used to make a simple print check at the EPSON service
company. Exclusive servicing
program Plain paper
(A4)
Others
Save all
EEPROM data This function is used to analyze defective products. Save the data of all EEPROM addresses. Exclusive servicing
program Non-target
Table 5-4. Adjustment Other Than Adjustment Program
Function Item Purpose Adjustment Outline
CR timing belt tension adjustment This adjusts the belt tension in order to prevent jumpiness between the CR motor
pinion and the CR timing belt. Check the tension of the CR timing belt with a digital tension gauge.