Epson Stylus C42 Series, Service Manual

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Stylus C41/42/43/44 series Revision B
Disassembly and Assembly Disassembly 29
2.2.8 Printhead unit removal
1. Remove the upper housing. (Refer to Section 2.2.1)
2. Remove the ink cartridges.
3. Move the carriage to the center.
4. Take out the screw, then remove the CR motor from the frame.
Figure 2-28. Removing the CR motor
5. Remove the timing belt from the Carriage pinion gear.
A D J U S T M E N T
R E Q U I R E D
When replacing the Main board with a new one, perform the
following service items.
T
Before removing the Main Board, connect the parallel cable or
USB cable and try to read out the following data by using the
Adjustment program. If this operation succeeds, replace the
Main board and write the read out data to the new Main
board through the Adjustment program. (“EEPROM back up
data” on page 51)
1) I/C Ink consumption counter.
2) Waste ink drain pad counter.
3) EEPROM Initial setting
4) Head ID input
5) Top margin adjustment
6) Bi-D adjustment
In case the above mentioned data are not able to be read out from the
defective Main board, perform the following service items.
T
Replace the both ink cartridges with a brand new one.
T
Replace the Waste ink pad with a new one.
T
Reset the Ink pad counter
T
Input the EEPROM initial setting value
T
Input the Head ID
T
Adjust the Top margin
T
Adjust the Bi-D alignment.
C A U T I O N
T
Do not remove the below screw, fixing the driven pulley.
Because, the screw has been fixed in the static temparature
condition. If removed, the Bi-D will be changed in
widetemparature range.
CR motor
CBS 3
×
6
CR pinion gear
Screw