EPSON Stylus CX3700/CX3800/CX3805/CX3810/DX3800/DX3850 Revision A
ADJUSTMENT Overview 134
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 Adjustments
If you remove or replace the specific part in your service/repair, you have to perform 
the appropriate adjustment as listed Table 5-1 below.
In this printer, it is necessary
 to perform appropriate adjustment in order to maintain 
consistent printing function and quality, eliminate differences of each printer 
mechanism’s characteristics. Therefore, in case that the combination between the 
printer mechanism and the Main Board changes or the Print Head is replaced during 
the repair service, you must input the correct adjustment value into the EEPROM on 
the Main Board by using the Adjustment program.
C H E C K
P O I N T
In case that any parts are removed and assembled on the repair 
product while running the Adjustment program, make sure to 
turn off the printer.
Table 5-1.  Required Adjustments
EEPROM 
data copy
Market 
setting
USB ID 
input
Waste ink 
pad counter
Ink 
charge
Head ID 
input
Top 
margin 
adjustment
First dot 
adjustment
*
Head 
angular 
adjustment
Bi-d 
adjustment
CR 
offset
PF band 
adjustment
ASF unit
removal --- --- --- --- --- --- Required --- --- --- ---
Required
replacement --- --- --- --- --- --- Required --- --- --- --- Required
CR motor
removal --- --- --- --- --- --- --- --- --- Required --- ---
replacement --- --- --- --- --- --- --- --- --- Required Required ---
Paper guide upper
removal --- --- --- --- --- --- Required --- --- --- --- Required
replacement --- --- --- --- --- --- Required --- --- --- --- Required
Front frame
removal --- --- --- --- --- --- --- --- Required Required --- ---
replacement --- --- --- --- --- --- --- --- Required Required --- ---
Print head
removal --- --- --- --- --- --- Required --- Required Required --- Required
replacement --- --- --- --- Required Required Required --- Required Required --- Required
Main board
removal --- --- --- --- --- --- --- --- --- --- --- ---
replacement 
(read OK)
Required --- --- --- --- --- --- --- --- --- --- ---
replacement 
(read NG)
--- Required Required
(Pad 
repl
acement)
--- Required Required  Required Required Required Required
Required
Adjustment item
Replaced part