Main Board; Nvram Back Up And Write; Colorimetric Calibration (Color Id); Initial Ink Charge Flag On/Off - Epson Stylus Pro 7400 Service Manual

EPSON Stylus Pro 7400/7800/9400/9800
BASIC ADJUSTMENT
Adjustment
RTC&USB ID&IEEE1394 ID

Head Rank ID

Input Serial Number

T&B&S (Roll Paper)
T&B&S + 980mm Band Feed
Cutter Pressure Adjustment

Nozzle Bi-D Adjustment

Print Head Slant Adjustment (PF)

Print Head Slant Adjustment (CR)

Ink Mark Sensor Level Adjustment

Auto Uni-D Adjustment
Auto Bi-d Adjustment (P.G. 0.8/1.6)
Ink Mark Sensor Adjustment for Auto Nozzle
Check
Skew Check
Platen Position Adjustment
980mm Band Feed Adjustment

Initial Ink Charge Flag ON/OFF

NVRAM Back Up and Write

Initial Ink Charge
Cleaning

Rear Sensor Adjustment

Colorimetric Calibration (Color ID)

Adjustment
Initializes the RTC and writes USB ID and IEEE 1394 ID.
Writes a Head Rank ID.
Writes and reads the serial number.
Adjusts the print area on roll paper.
Corrects a paper feeding amount and adjusts the left, right, top and bottom margins.
Adjusts the paper cutting pressure.
Makes Bi-D adjustment for matte black nozzles, which can be used as a benchmark when making Bi-D
adjustment for the other color nozzles.
Prints an adjustment pattern to check if the Printhead is slanted in the PF direction and corrects the head angle.
Prints an adjustment pattern to check if the Printhead is slanted in the CR direction and corrects the head angle.
Adjusts the light emitting amount of the Ink Mark Sensor.
Performs an automatic Uni-D adjustment by the Ink Mark Sensor.
Performs an automatic Bi-D adjustment by the Ink Mark Sensor. The platen gap to print an adjustment pattern
can be selected between 0.8 and 1.6.
Corrects the reading timing of the Ink Mark Sensor to detect dot missing status in main and sub scanning
direction.
Feeds paper to check skew level of the paper.
Adjusts the printing position for borderless printing.
Prints a 980-mm-length pattern to check the band-feed amount.
A flag for initial ink charge can be set or cleared as necessary after replacing the Main Board.
Backs up parameters stored on the NVRAM on the previous board, and writes them into the NVRAM on a new
board.
Performs an initial ink charge.
Runs a cleaning.
Gets AD values of a newly attached Rear Sensor to store them onto the Main Board as a standard of reading
operation of the sensor.
Adjusts the amount of ink droplets
General Overview
Overview
Revision B
Tool
Page
AU* 1 SM* 2 AT* 3
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