Canon imageRUNNER ADVANCE C255 Series, Service Manual, Page: 838 / 987

TEST (Print test mode)
■ PG
COPIER (Service mode for copier) > TEST (Print test mode) > PG
TYPE 1 Test print
Detail To execute the test print.
Use Case At trouble analysis
Adj/Set/Operate Method Enter the setting value, and then press Start key.
Test print is executed.
Caution Be sure to return the value to 0 after the test print output.
Display/Adj/Set Range 0 to 100
0: Image from CCD (normal print)
1 to 3: For R&D use
4: 16 gradations
5: Whole-area halftone image
6: Grid
7 to 9: For R&D use
10: MCYBk horizontal stripes
11: For R&D use
12: YMCBk 64 gradations
13: For R&D use
14: Full color 16 gradations
15 to 100: For R&D use
Default Value 0
TXPH 1 Setting of test print image mode
Detail To set the image mode at the time of test print output.
This mode is enabled for test print only.
Use Case
At trouble analysis
Adj/Set/Operate Method
Enter the setting value, and then press OK key.
Display/Adj/Set Range 0 to 14
0: Error diffusion
1: Low screen ruling (approx. 133 to 190 lines)
2: High screen ruling (approx. 200 to 268 lines)
3 to 4: Not used
5: Error diffusion (with trailing edge adjustment)
6: High screen ruling (with trailing edge adjustment)
7 to 8: Not used
9: 1/2 speed, low screen ruling (approx. 133 to 190 lines)
10: 1/2 speed, high screen ruling (approx. 200 to 268 lines)
11 to 13: Not used
14: 1/2 speed, high screen ruling (with trailing edge adjustment)
THRU 1 ON/OFF img correct table use: test print
Detail To set whether to use the auto gradation adjustment table at the time of test print output.
Use Case At problem analysis
Adj/Set/Operate Method Enter the setting value, and then press OK key.
Display/Adj/Set Range 0 to 1
0: ON, 1: OFF
DENS-Y 1 Adj of Y-color density at test print
Detail To adjust Y-color density when performing test print (TYPE = 5).
As the value is larger, the image gets darker.
Use Case At test print (TYPE = 5)
Adj/Set/Operate Method
Enter the setting value, and then press OK key.
Display/Adj/Set Range
0 to 255
8. Service Mode
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