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Epson 680Pro - LQ B/W Dot-matrix Printer - 5.1 Overview; 5.1.1 Required Adjustment

Epson 680Pro - LQ B/W Dot-matrix Printer
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EPSON Stylus COLOR 680/777/777i Revision B
Adjustment
O
verview
1
01
5.1 Overview
This section describes the procedure for adjustments required when the printer is
disassembled and assembled for repair or service.
5.1.1 Required Adjustment
Table 5-1 lists all the necessary adjustments for this printer. If any service listed in this
table is carried out, all adjustments corresponding to that service item should be
performed to ensure proper operation of the printer.
This section describes the detailed procedures of each adjustment by Adjustment
Program.
In this printer, it is necessary to set the adjusting information for each printer
mechanism in order to maintain consistent printing function and quality, eliminating
differences of each printer mechanism’s characteristics. Therefore, in case that the
combination of the printer mechanism and main board changes or the print head is
replaced during the repair service, you must set and save the correct information to the
MAIN board, using the exclusive adjustment program.
This section describes the detailed procedures of each adjustment by Adjustment
Program.
Table 5-1. Required Adjustment
1 2 3 4 5
Service item
Head ID
input
Ink
Change
Bi-D
Adjustme
nt
USB ID
input
Protection
Counter
reset
Printhead removal NA NA
Q
NA NA
Printhead
replacement
Q R S
NA NA
Main board
replacement
Q
NA
RS
NA
CR Unit replacement
or removal
NA NA
Q
NA NA
CR Motor
replacement
NA NA
Q
NA NA
Printer mechanism
replacement
Q R
S
NA NA
Waste Ink pad
replacement
NA NA
NA NA
Q
NOTE:
¡
”: Required Adjustment. The number in the circle shows the
required adjustment order.
“NA”: Not applicable.
NOTE: Following adjustments are not required on this product.
- Platen Gap adjustment
- Head Angular adjustment.
C H E C K
P O I N T
In case any parts is removed and assembled on the repair product
while running the Adjustment program, turn off the printer
certainly.

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