Gestetner B147, Service Manual

Page: 273 / 1081

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