Epson 680Pro Service Manual - Page 104

EPSON Stylus COLOR 680/777/777i, Revision B, Adjustment, Overview

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EPSON Stylus COLOR 680/777/777i Revision B This adjustment function enables you to write printhead ID into the specific address of the EEPROM. This operation is considered the most important to maintain proper ink discharging system. If any ID is not written correctly, it results in white or color lines and also gives bad influence on dot weight. C A U T IO N Before or after performing this operation, refer to the table 5-1 and perform any appropriate adjustments or operations. 3. If you replace the failure Main board with a new on, try to perform the "Check head ID". In case the logic circuit dose not have any damage, you can read out the Head data of the present Head ID data. If this function is available, you can check the present Head ID without removing the Head FFC holder. 1. Run the Adjustment program and enter the Adjustment Main menu. 2. Choose the "Head ID" and click it. The menu shown in the next page appears. This function is useful only when the Main board is replaced with new one. When the print head is replaced with new one, go to step 5. Figure 5-5. Read out the Head ID from the EEPROM 4. If you can read out the present Head voltage ID, take memo the read out Head ID voltage. NOTE: In this Adjustment program, you can not write the read out Head ID to the new Main board in the read out Head ID menu. In case you write the read out Head ID to the new main board, you have to take menu the read out Head ID and input it again in the "Input head menu." Figure 5-4. 1st Head ID adjustment items menu Adjustment Overview 104

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EPSON Stylus COLOR 680/777/777i
Revision B
Adjustment
Overview
104
This adjustment function enables you to write printhead ID into the specific address of
the EEPROM. This operation is considered the most important to maintain proper ink
discharging system. If any ID is not written correctly, it results in white or color lines
and also gives bad influence on dot weight.
1.
Run the Adjustment program and enter the Adjustment Main menu.
2.
Choose the “Head ID” and click it.
The menu shown in the next page appears. This function is useful only when the
Main board is replaced with new one. When the print head is replaced with new
one, go to step 5.
Figure 5-4. 1st Head ID adjustment items menu
3.
If you replace the failure Main board with a new on, try to perform the “Check
head ID”. In case the logic circuit dose not have any damage, you can read out the
Head data of the present Head ID data. If this function is available, you can check
the present Head ID without removing the Head FFC holder.
Figure 5-5. Read out the Head ID from the EEPROM
4.
If you can read out the present Head voltage ID, take memo the read out Head ID
voltage.
NOTE:
In this Adjustment program, you can not write the read out Head ID to
the new Main board in the read out Head ID menu. In case you write the
read out Head ID to the new main board, you have to take menu the read
out Head ID and input it again in the “Input head menu.”
C
A
U
T
I
O
N
Before or after performing this operation, refer to the table 5-1 and
perform any appropriate adjustments or operations.