Hitachi HT-4139-28, Maintenance Manual

Page: 51 / 126

REV0 2010.02.15
-H7-18-
7.8.4 Display of calibration information
Display the results of measurement. (Device unique data)
7.8.4.1 Photo Amplifier
(1) Specify parameters and click the “RUN” button.
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Input/Output file name: RX8_GAKU.OCR
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Input mode : OCR Scanner
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Output mode : Not exists
[Photo Amplifier]
Photo information to detect sheet.
NOTE: G (Gain), L2 (Dark Level), L3 (Blight Level), Ls (Slice Level)
Ls is the slice level for the judgment and determined with L2 and L3.
Check Item Photo Number Criteria Note
PC11,20,21,31,41,42,43,51,52 20 ~ F0
PC22 30 ~ FF
L3 (Blight Level)
PC22(DBL) 30 ~ FF
PC11,20,21,31,41,42,43,51,52 00 L2 (Dark Level)
PC22 01 ~ 30
PC22(DBL) 01 ~ 30
If results are out of criteria, cleaning and/or replacement might be required.
7.8.4.2 PC22N
PC22:
Device unique factor for detection of dual feeding by
light intensity.
NOTE: G (Gain), L1 (Blight Level), L0 (Blight Level), Ld (Level w/ paper), M (Measured transmissivity),
M O (Reference transmissivity), N (Measurement results)
Check Item Criteria
N(Results) 0.5 ~ 2.0 (Normal 1.0)
If results are out of criteria, cleaning and/or replacement of the PC22 might be required.