Dc612 Color Test Pattern Print - Xerox DocuColor 1632 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).
a. To print a Test Pattern, select Image Process System:
i. Select the Pattern Number from the menu.
ii. Select the Paper Tray.
iii. Set the number of prints to output in the Print Count Box and select Start.
b. To print the Image Output Test Pattern, select Image Output System.
Patte
rn # Pattern Name Overview
1 ROS Check Seal Glass Cleaning Guide: 20% Half Tone Full Band Width KCMRY Fast
Scan direction Stripe Pattern
2 Halftone (IOT) Seal Glass Cleaning Guide: 20% Half Tone Full Band Width Full Half Tone.
Select the density from Cin=0~100.
3 Grid 1dot (For separating troubles) 512 dot Pitch Grid Pattern with 1 dot width
4 Fast Scan 8 Gradation (For separating troubles) Fast Scan direction 8 Gradation Pattern
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 CNT for approx. 1 cycle (1: 4 sheets of A4 continuous)
of IBT Belt in full color. ("<" pattern)
9 C Patch Forms a three-axle IN/CNT/OUT in approx. 1 cycle (1: 4 sheets of A4 contin-
uous) of IBT Belt in single color C. (Chevron Pattern)
10 Binary/Auto Gradation (For gradation correction) Gradation pattern for gradation correction for
Correction PG (For printing LUT: C-TRA OFF IOT OFF
Printer) LUT: C-TRA
OFF IOT OFF
Prelaunch Training/Review
DC1632/2240
Entering Diagnostic Mode using the PWS.
i. Image Output System
ii. Paper (Simplex/Duplex)
iii. Paper Tray/Size
iv. Paper Type
v. Screen Type
vi. Color Mode
vii. Set the number of prints to output and select Start.
Test Patterns
The patterns currently displayed do not match the descriptions in the table. The correct pattern
number/descriptions are TBD.
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
output sheet contains Seal Glass smearing. -> To determine defect
engine
Defect can be detected/evaluated (streaks, uneven density, band-
ing)
- Around Alignment and Color Regi
- Secondary Transfer part magnification failure
For development.
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).
To output during Auto Gradation Correction. For checking
CTRACS feature. The same pattern as this output pattern is even
output in the CTRACS feature (Reads the output pattern by IIT
and sets up the color reproducibility) inside the Tools (opened to
customer). The test pattern here is able to check the setup effects
of the Printer feature.
6/02
6-79
CAUTION
Table 1:
Location
IOT
IOT
IOT
IOT
Controller
Controller
Controller
Controller
Controller
Controller
General Procedures and Information
dC612