Gestetner B070 Service Manual page 1034

Rev. 10/2003
Here is an example:
-10/-2/+10
-100/+0/+100
To enter these numbers, you would execute:
SP2115 001
SP2115 002
SP2115 003
SP2115 004
SP2115 005
SP2115 006
CAUTION: This example is for instructional purposes only. When you do this
adjustment, you must enter the numbers printed on the label
attached to the LD unit.
5. Do SP2962 (Auto Process Control Execution).
6. Make some test copies and check that the magnification is correct. If not
⇒
correct, please do the printer copy adjustment. ( 3.17)
⇒
LD Unit Adjustment Procedure
Please perform the following if the spacers attached to the bottom of the LD unit
are misplaced or their original positions become unclear at LD unit replacement.
This adjustment is necessary to ensure ID variations along the main scan direction
do not occur, which result from beam pitch variations along the sub scan direction.
IMPORTANT: Always make sure to turn the machine main power OFF before
inserting the spacers into the LD unit.
1. Print out the SP2902-3 No.22 test pattern without any Mylar spacers attached.
Using the illustration for LD Unit 3.6.3, perform the following two steps until the ID
variation along the main scan direction is not visible on the test chart:
2. Attach one 100 μm (milk white) spacer in the rear of the unit. Print out the
pattern again and compare with the sample from Step 1.
If the ID variation along the main scan direction decreases (improves) but
is still visible, attach another 100μm spacer in the same position.
If the ID variation gets worse, go on to Step 3.
3. Attach one 100 μm spacer in the front of the unit. Print out the pattern again
and compare with the sample from Step 2.
If the ID variation along the mainscan direction decreases (improves) but is
still visible, attach another 100 μm spacer in the same position.
NOTE: Refer to Technical Service Bulletin B070/B071 – 014 for more
information.
SM
CÓPIA NÃO CONTROLADA
•
Press to enter the minus sign.
•
Press after each entry.
•
A key press is not required for the plus sign.
3-37
CÓPIA NÃO CONTROLADA
LASER UNIT
B070/B071