Gestetner B147 Service Manual page 273

Are the black
Yes
lines and color lines parallel?
Adjust the main-scan registration with the
following SPs:
SP5-993-010
SP5-993-011
SP5-993-012
Execute the line position adjustment with the
following SP:
SP5-993-002
Print out a pattern with the following settings:
SP5-997-002 "1 dot grid (R)"
SP5-997-004 "Full Color"
SP5-997-005 "600 x 600"
Do the lines shift?
B147/B149/B190
Main-scan direction
No
Yes
Adjust the magnification
with the following SPs:
SP5-993-013
SP5-993-014
SP5-993-015
Leading edges
Adjust the development-
motor speed with the
following SPs:
SP1-004-005
SP1-004-004
SP1-005-003
SP1-007-001
No
End
A
How the lines shift?
Sub-scan direction
Which part
of the lines shift?
Leading or trailing edge
Check the transfer-belt speed with
the following SPs:
SP5-993-031
SP5-993-033
Leading or trailing edge
Disable the transfer-belt feedback
feature with the following SP:
SP5-995-020
Which
edges of the color lines has
shifted?
Trailing edges
Adjust the development-motor speed
with the following SPs:
SP1-004-002
SP1-004-001
SP1-004-007
Enable the transfer-belt feedback
feature with the following SP:
SP5-995-020
No Do the lines shift?
4-71
TROUBLESHOOTING GUIDE
When you have come to
this step, the lines shift
0.2 mm or less.
Whole part
Adjust the sub-scan
registration with the
following SPs:
SP5-993-016
SP5-993-017
SP5-993-018
SP5-993-019
SP5-993-020
SP5-993-021
Yes
Execute the line position
adjustment with the
following SP:
SP5-993-002
Print out a pattern with the
following settings:
SP5-997-002 "1 dot grid (R)"
SP5-997-004 "Full Color"
SP5-997-005 "600 x 600"
and "1200 x 1200"
B146T907.WMF
SM