Toshiba e-STUDIO 4500c, Service Manual

Page: 528 / 1120

SERVICE PROGRAM TABLES April, 2007
5-36
2110 Force Tnr Cycle Force Toner Supply Cycle
001 Forces 2-Point interval correction.
2111 Force Tnr Pos Force Toner Position Alignment
Executes 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).
Normally, 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.
2112 Mag Point Adj Maginification Point Adjustment
Corrects the difference in magnification for each color in the left and right direction.
[-4~+4/1 (50
µ
m)]
Do SP2109 002 and print Pattern 1 on A3/DLT size paper. Examine the pattern
with a scaled lupe. For every 50
µ
m adjust the setting in the left or right direction. A
1 step correction corrects 50
µ
m.
001 M Left [-4~+4/1]
002 M Right
003 C Left
004 C Right
005 Y Left
006 Y Right
2150 Prt Area Pulse Pulse Setting: Print Area Only DFU
These SPs fine adjust magnification in the main scan direction in increments
of 1/32 dots.
001 - 010 K Area 0 – Area 9 [-120~+120/32 sub dot]
011 - 020 M Area0 – Area 9
021 - 029 C Area0 – Area 9
031 - 040 Y Area0 – Area 9