Toshiba e-STUDIO 4500c, Service Manual

Page: 387 / 1120

April, 2007 SPECIAL PROCEDURES
4-9
Image Position Adjustment
A MUSIC error occurs when a large amount of skew occurs beyond the acceptable
range, or when the K sensor is out of position. Such errors can be corrected
manually to correct skew. However, these adjustments cannot correct problems
caused by physical damage to the ITB, filming, density degradation, or a dirty
sensor.
1. Load some A3/DLT paper in Tray 1. Make sure that the side and bottom fences
are set properly.
2. Do SP1002 001 (Side-to-Side Reg – Tray 1) and set it to "0".
3. Do SP2109 002 (Test Pattern) then select and print pattern 10: Trim Area.
4. Do SP2101 001 so the left and right margins are 1.5 mm. If the image is cut off
at the edge, use the 1-dot pattern.
5. If any color is separated from black more than 1 mm, do SP2101 002~004 to
bring each color closer to K.
Important
•
Black skew can cause part of the image to shift off the paper.
•
Normally, the settings of SP2102 001~004 should be reset to the values in the
SMC report or the values printed on the A5 sheet provided with a new laser unit.
•
Normally, these values do not change unless the NVRAM becomes corrupted.
•
Most machines can be adjusted with these values: K: -40, M:-20, C:-10, Y: -5.
Use these values if other information is not available.