Gestetner B147 Service Manual page 282

TROUBLESHOOTING GUIDE
Registration roller speed adjustment (For B&W mode)
1. Input the following values in the SP modes.
SP1-004-006 = (Value of SP1-004-005)
SP1-005-002 = (Value of SP1-004-005) – 0.2%
2. Print a 2-dot pattern (pattern 12) using A3/11" x 17" paper.
Mode
Normal color 600 dpi
3. Depending on the paper used, a horizontal band may appear at 60 mm (2.76")
from the leading edge on A3 (11" x 17") paper. If the horizontal band is
observed on the 2-dot pattern, decrease the setting of SP1-004-006 in 0.05%
steps until the problem is solved.
B147/B149/B190
SP5-997 (Test Pattern) Setting
Tray
Pattern
selection
2 12
4-80
Single
Color Mode Resolution
Color
6 (Black) Single Color 600x600
SM