Ricoh V-C3 D081 Field Service Manual page 768

4. Appendix: Service Program Mode Tables
20 Gray Density 10
21 Gray Density 11
22 Gray Density 12
23 Gray Density 13
24 Gray Density 14
25 Gray Density 15
4
2110 Force Tnr Cycle
Force Toner Supply Cycle.
1 Do Correction
2 Do With LD Wavelength
211
Force Tnr Pos
1
Force Toner Position Alignment.Touch [EXECUTE] to execute the MUSIC feature. MUSIC is the
"Mirror Unit for Skew and Interval Correction".
Three MUSIC sensors mounted above the ITB read three MUSIC sensor patterns developed on
the ITB.
The sensors read the patterns and the machine uses this feedback to adjust: 1) the positions of the
3rd scanner mirrors to correct skew (main scan), and 2) the speed of the drum motors to correct
the intervals (sub scan) between the patterns.
If the vertical alignment of the patterns or the intervals are not correct, this causes color offset. This
adjustment is done for each color (Y, M, C, K).
MUSIC executes automatically:
• When the machine is turned on or returns from an energy save mode.
• At the interval prescribed by SP2153 015 (Default: 8 min.)
• After completion of the process control cycle.
• When the machine receives a job after remaining idle for a long period.
• After the fusing unit exceeds the prescribed temperature.
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