TROUBLESHOOTING GUIDE 17 January, 2003
4-52
Adjustment Standard: Max. 180
µ
µµ
µ
m
As a machine capability, the maximum amount of color shift is 180µm. Adjusting the SP modes (motor speed, registration, and
magnification) can improve the color shifts level; however, there is a limit.
Preparation
When color shift is reported, the following procedure should be done before adjusting the machine and/or SP modes.
NOTE: The line position adjustment cannot correct the color shift if the gap between the color lines is 2 mm or greater. In this
case, restore the factory settings in the following SP modes and perform the line position adjustment. Then, follow the
troubleshooting procedure if required.
• Main-scan Registration SP2-909-01 to 04
• Sub-scan Registration SP2-916-01 to 10
• Main-scan Magnification SP2-103-55 to 59
1. Print out the SMC sheets (SP5-990-002).
2. Do the forced line position adjustment (SP5-993-002 or ‘Auto Adjust’ in the User Program mode).
NOTE: Make sure that the result (SP5-993-007) is “0101”. If not, solve the problem by referring
to pages 4-2 and 4-3.
3. Print a 1-dot grid pattern using A3/11" x 17" paper. Refer to the following table for the detailed SP mode settings.
Mode SP5-997 (Test Pattern) Setting
Tray
selection
Pattern Color mode Resolution
Paper size
(By-pass)
Normal, color, 600 dpi 2 05 Full Color 600x600 —
Normal, color, 1200 dpi 2 05 Full Color 1200x1200 —
Thick paper 0 05 Full Color 1200x1200 A3 / 11x17
NOTE: When making prints on thick paper from the by-pass tray, the type of paper should be selected in the User Program
mode. Any adjustment needs to be done by using the type of paper that the customer normally uses.
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