Service manual

TROUBLESHOOTING GUIDE 2
SM 4-63 G130/G131
Trouble-
shooting
Fusing roller speed adjustment
1. Do the line position adjustment (SP5-993-002 or “Auto Adjust” in User Program
mode).
2. Print a 1-dot grid pattern for each of the following modes with A3/11" x 17"
paper.
(1) Normal, 600 dpi
(2) Normal, 1200 dpi
(3) Thick, 1200 dpi
3. Do the troubleshooting procedure (Sub-scan/Trailing edge) if the color has
shifted within 100 mm from the trailing edge.
Registration roller speed adjustment (for color mode)
1. Do the line position adjustment (SP5-993-002 or “Auto Adjust” in User Program
mode).
2. Print a 1-dot grid pattern for each of the following modes with A3/11" x 17"
paper.
(1) Normal, 600 dpi
(2) Normal, 1200 dpi
3. Do the troubleshooting procedure (Sub-scan/Leading edge) if the color has
shifted within 100 mm from the leading edge.
NOTE: The registration roller speed for by-pass paper feed is the same as for
normal 1200 dpi mode.
Line position fine adjustment for sub-scan
1. Print a 1-dot grid pattern each for each of the following modes with A3/11" x 17"
paper.
SP5-997 (Test Pattern) Setting
Mode
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
2. Check if there is any color shift from the black line by the same amount all the
way down the page from leading to trailing edge. Follow the troubleshooting
procedure (Sub-scan/Whole image) if there is.