Service manual

System Service Mode
SM Appendix 3-27 D127/D128
Appendix:
SP Mode
Tables
4417* IPU Test Pattern
4417 1 This SP has the test patterns as below.
0 Scanned image 15 Gray pattern (1)
1 Gradation main scan A 16 Gray pattern (2)
2 Gradation main scan B 17 Gray pattern (3)
3
None
18 Shading pattern
4 29 Thin line pattern
5 Gradation sub scan (1) 20 Scanned+Grid pattern
6 Grid pattern (1) 21 None
7 Slant grid pattern 22 Scanned+Color patch
8 Gradation K 23 Scanned+Slant Grid C
9 None 24 None
10 Gray patch 16 (1) 25 Gray scale 18 text
11 Gray patch 16 (2) 26 Gray scale 18 photo
12 Gray patch 64 27 Gray scale 256 text
13 Grid pattern (2) 28 Gray scale 256 photo
14 Color patch K
4429 Select Copy Data Security [0 to 3 / 3 / 1 /step]
4429 1 Copying
The larger value, the stronger the density
becomes for coping originals forbidden to be
duplicated.
4429 2 Scanning
4429 3 Fax Operation