Epson 900N, Service Manual

Page: 130 / 201

EPSON Stylus COLOR 900/900N Chapter 5 Adjustments
127
5.2.4 Printhead ID Input
You need to input the printhead ID under the following circumstances:
„
If you replace the printhead.
„
If you replace the C265 Main board.
„
If you replace an older PROM (version TEE012A, 01B, or 01C)
with a new one (TEE01D or later).
Follow these steps to input the printhead ID:
1. Before running the adjustment program, you need to determine the
current printhead ID. If you’re putting in a new printhead, write down
its 22-digit ID before you install it in the printer. If you need to
remove the printhead to see its ID, follow the instructions in
“Printhead Removal”
on page 98.
2. You also need to determine the last digit of the PROM’s serial
number. If you’re putting in a new main board or ROM chip, write
down the last digit of the chip’s serial number (A, B, C, etc.) before
you install it in the printer. Otherwise, remove the Type-B interface
card (if one is installed) or the interface cover plate to view the chip
from the back of the printer.
3. Perform the actions described in “Starting the Adjustment
Program” on page 122. You see the main menu:
Table 5-5. Main Menu
C A U T I O N If you replace the printhead, carefully follow the
instructions in
Table 5-1 on page 119, or the printer
may display an Ink Out error even after you install new
ink cartridges.