Dc612 Color Test Pattern Print - Xerox DocuColor 2240 Service Manual

dC612 Color Test Pattern Print

Purpose
Prints the test patterns in the machine, to help identify Image Quality problems.
Procedure
1. Enter the Diagnostic Mode. Refer to
2. Select Diagnostics in the Service Entry Screen.
3. Select Test Pattern (dc612).
4. Select the Pattern Number from the menu.
No. Description Overview
1 ROS Check ROS window Cleaning Guide: 20% Half Tone Full Band Width KCMY Fast
Scan direction
2 Halftone (IOT) Full Band Width Half Tone. Select the color, and density from Cin = 0 to 100. can be detected/evaluated for streaks, uneven density, banding
2-1 Halftone 4 Color Full Band Width Half Tone. Select density from Cin = 0 to 100. 4 color mode can be detected/evaluated for streaks, uneven density, banding
2-2 Halftone 3 Color Full Band Width Half Tone. Select density from Cin = 0 to 100. 3 color mode can be detected/evaluated for streaks, uneven density, banding
3 Grid 1dot 512 dot Pitch Grid Pattern with 1 dot width
4 8 level scanning 8 tone levels in scanning direction
5 A1 Patch Forms a bi-axial near the IN and OUT edges in full color. (Chevron Pattern)
At normal Regi Control cycle: Approx. half cycle of IBT Belt (2 sheets of A4
continuous) At Diag Regi Control cycle: Approx. 1 cycle of IBT Belt (1: 4
sheets of A4 continuous)
6 A2 Patch Forms a 1 axial near CNT for approx. 1 cycle (1: 4 sheets of A4 continuous)
of IBT Belt in full color. (Chevron Pattern)
7 B1 Patch Forms a bi-axial near the IN and OUT edges for approx. 1 cycle (1: 4 sheets
of A4 continuous) in full color. ("<" pattern)
8 B2 Patch Forms a 1 axial near CTR for approx. 1 cycle (1: 4 sheets of A4 continuous)
of IBT Belt in full color. ("<" pattern)
9 C Patch Forms a three-axis IN/CTR/OUT in approx. 1 cycle (1: 4 sheets of A4 contin-
uous) of IBT Belt in single color (Cyan). (Chevron Pattern)
12-0 Binary Process Control (Density adjustment, gradation check) Gradation pattern for density adjust-
ment
LUT: Ctrax off; IOT off
12-1 Binary Process Control (Density adjustment, gradation check) Gradation pattern for density adjust-
ment
LUT: Ctrax off; IOT ON
12-2 Binary Process Control (Density adjustment, gradation check) Gradation pattern for density adjust-
ment
LUT: Ctrax ON; IOT off
12-3 Binary Process Control (Density adjustment, gradation check) Gradation pattern for density adjust-
ment
LUT: Ctrax ON IOT ON
General Procedures and Information
dC612
Entering Diagnostic Mode using the PWS.
NOTE: Not all of the following parameters are applicable to all test patterns; patterns 5 through
36-3 require A4 paper and can be output only from Tray 1
5. Select the Paper Tray.
6. Select Simplex/Duplex
7. Select Paper Type
8. Select Screen Type
9. Select Color Mode
10. Set the number of prints to output in the Print Count Box and select Start.
Test Patterns
For details on the test pattern generation location and output path, see
Table 1 Test Patterns
Purpose
The engine where defect has occurred can be determined as an out-
put sheet contains ROS window smearing. -> To determine defect
engine
- Around Alignment and Color Regi
- Secondary Transfer part magnification failure
For ASIC debug.
For Color Regi adjustment in Diag DC685-1 (Skew Fine Setup) and
DC685-2 (In/Out Setup) during JOB, at beginning of JOB and end of
JOB. Also, for Color Regi reading in DC681 and DC684.
For Color Regi adjustment in Diag DC685-3 (Center Setup)
For Color Regi rough adjustment in Diag DC685-1 (Skew Fine
Setup) and 685-4 (Skew Rough Setup).
For Color Regi adjustment in Diag DC685-3 (Center Setup)
For Diag DC683 (to check Sensor, Cyan and position shift).
The Primary color/Secondary color/Tertiary color gradation reproduc-
ibility can be checked by crossing over to entire gradation. For
checking TRC.
The Primary color/Secondary color/Tertiary color gradation reproduc-
ibility can be checked by crossing over to entire gradation. For
checking TRC.
The Primary color/Secondary color/Tertiary color gradation reproduc-
ibility can be checked by crossing over to entire gradation. For
checking TRC.
The Primary color/Secondary color/Tertiary color gradation reproduc-
ibility can be checked by crossing over to entire gradation. For
checking TRC.
09/03
6-116
Table 1:
Location
IOT
IOT
IOT
IOT
IOT
IOT
Controller
Controller
Controller
Controller
Controller
IPS
IPS
IPS
IPS
Initial issue
DC 3535/2240/1632, WC M24