Service manual

EPSON Stylus COLOR 480 Revision B
Adjustment Overview 100
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
Performance Priority 1 2 3 4
Replacing parts/Service item
Initial Ink
Charge
Head ID
Setting
Bi-D
Adjustment
Ink pad
Counter
reset
Replacing the Main Board. NA
QRNA
Replacing the printhead unit.
Q R S NA
Replacing the CR motor. NA NA
Q NA
Replacing or removing the CR
assembly.
NA NA
Q NA
Replacing the Waste drain ink
pad
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.
- USB ID input
NOTE: When the Main board is replaced with new one, you may have to
replace the following parts also in case the EEPROM parameter back
up function is not available on the defective main board.
* Waste drain ink pad
* Both Black & Color Ink Cartridge
W ARNING
In case any parts is removed and assembled on the repair product
while running the Adjustment program, turn off the printer certainly.