Ricoh Aficio IS420 Service Manual page 97

Image scanner
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October 9th, 1995
7. The bottom line of the screen shows data coming from the scanner. This
data is continually being refreshed. You can begin to adjust immediately.
Adjust VR4 on the SBU until the value of X is within the required range.
(In the example screen above, the value on the bottom line below the X
must be 220 +/- 2.) Then input !.
<<<<<< EXIT >>>>>>
[ Next : Hit Enter Key !! ]
8. Press the Enter key.
<<<< AGC=27 >>>>
**** Image Data (#3584) ****
002,002, 100,099 (098,097 <+>001) [097]
<<<<<< EXIT >>>>>>
Ajust VR2 : [X] == 099 +/- 2
**** Image Data (#3584) **** [ Exit : '!' key ]
003,002,104,101 (101,099<+>002) [100]
9. Adjust VR2 on the SBU until the value of X is within the required range.
(In the example screen above, the value on the bottom line below the X
must be 99 +/- 2.) Then input !. This ends the Gain Curve Adjustment.
<<<<<< EXIT >>>>>>
[ Finish gain curve ajustment!! ]
[ Next : Hit Enter Key !! ]********************************
10. Press the Enter key. The Gain Curve Confirmation procedure starts.
************************
****CONFIRM GAIN CURVE ****
************************
<<<< Absolute white level (W1) >>>>
<<<< AGC=11 >>>>
Ajust VR4 : [X]== 220 +/- 2****
Image Data (#3584) **** [ Exit : '!' key ]
005,002,226,226 (221,224 <->003) [222]
11. Adjust VR4 on the SBU until the value of X is within the required range.
(In the example screen above, the value on the bottom line below the X
must be 220 +/- 2.) Then input !.
<<<<<< EXIT >>>>>>
[ Next : Hit Enter Key !! ]
APPENDIX B. OPTICAL ADJUSTMENT (ELECTRICAL)
Ave-(E:098,O:097 <+>001) [097]
[X]
Ave-(O:100,E:098 <+>002) [099]
Ave-(O:221,E:222 <->001) [221]
B-5
[X]
[X]

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