Ink Charge Operation; Vh Setting - Epson Stylus Photo Service Manual

EPSON Stylus Photo

4.2.2.3 Ink Charge Operation

If either of the following service is made, internal ink paths of the printhead unit is completely empty.
Therefore, a brand-new ink cartridge must be installed and all ink paths must be charged with fresh ink by
performing the following operation to ensure proper printing operation.

Replacing the printer mechanism

Replacing the printhead unit

Since this operation consumes large amount of ink, do not perform it unnecessarily:
*Black:
*Color:

The ink charge operation takes long time to complete. Do not turn off the printer until it stops
completely.(The POWER indicator blinks during the operation.)
1. Start "Preparation for Adjustment" and complete 1 to 4 procedures. (Refer to section 4.2.2.2)
2. At the main menu [SCREEN-3], input "2" to select "Ink Charge" and press ENTER key. Then, the
printer starts the ink charge operation.

4.2.2.4 VH Setting

The piezo-electric element used in each printhead unit has unique electrical characteristic and the
electrical characteristic of each printhead is measured at the production and each printhead unit is given
with the ID code. Therefore, this ID code is need to be stored in EEPROM on the main board when the
following service is made and the printer read this information to compensate the difference of
characteristic for printing control and an amount of injected ink is maintained at the specified level.

Replacing the printhead unit

Replacing the printer mechanism (the after-service unit comes with the printhead unit installed)
*Refer to the next page for [SCREEN -1] to [SCREEN-3].
1. When replacing the part mentioned above, take a note of the ID code indicated on the unit as below.

Printhead Unit:

Printer mechanism:
2. Re-assemble the printer.
3. Start "Preparation for Adjustment" and complete 1 to 4 procedures.(Refer to section 4.2.2.2)
4. At the main menu [SCREEN-1], Input "1" to select "VH Setting" and press ENTER key.
5. At the next menu screen[SCREEN-2], input "0" as "M/C No." and press ENTER key.
6. Then next menu [SCREEN-3] appears on the screen, and input the ID code which you noted at the
beginning of this procedure.

VH ID Code format:
7. After inputting the ID code, the program returns to the main menu and you can continue to another
adjustments.

Timing to write the specified value to EEPROM: Upon pressing ENTER key after ID code input.
4-6
Approx. 8.8% of the ink charged in the cartridge
Approx. 16.2% of the ink charged in the cartridge (CMYcm total)
Stamped at the side of the unit
Indicated on a label attached to the packing box for the after-service unit.
st nd
/2 digits (from left)
*1
rd
*3 digit
th th
*4 /5 digits
WORK POINT
CAUTION
=Normal dot VH ID
=Drive frequency ID
=Micro dot VH ID
Rev. A