Gestetner G060 Service Manual page 993

BULLETIN NUMBER:
APPLICABLE MODEL:
GESTETNER – DSC38
LANIER – 2138AH
RICOH – AP3800C
SAVIN – SLP38C
SUBJECT: MAIN-SCAN MAGNIFICATION ERROR
SYMPTOM:
The image appears further enlarged or reduced along the main scan direction in relation to the
magnification setting for the original data.
CAUSE:
The parameters for main scan magnification have not been set correctly.
SOLUTION:
Perform the following procedure after the machine has come to a complete stop and reached Ready
condition:
1. Load the following sizes for feeding: DLT or LT LEF
2. Print out the SMC report.
3. Set the following SP modes as described below, then print out the test pattern for 1200 x 1200 dpi, and
then for 1200 x 600 dpi.
SP5-997-001 (Tray Selection)
SP5-997-002 (Pattern)
SP5-997-003 (Single Color)
SP5-997-004 (Color Mode)
SP5-997-005 (Resolution)
SP5-997-007 (Print)
4. Measure the vertical line interval using a ruler.
5. Adjust SP2-103-55 (1200 x 1200 dpi), and then SP2-103-59 (1200 x 600 dpi) so that the vertical line
interval falls within the following targets: 293 mm (A3 or A4 LEF), 275.4 mm (DLT or LT LEF).
Examples:
1. Interval is 1 mm shorter than target (1200 dpi):
1 mm x 1200 dpi / 25.4 mm/inch = 47.2 dot → 47
Input: (Current value of SP2-103-55) – 47
2. Interval is 3 mm longer than target (600 dpi):
3 mm x 600 dpi / 25.4 mm/inch = 70.53 dot → 71
Input: (Current value of SP2-103-59) + 71
6. Print out and check the test patterns.
7. Repeat step 3 to 5 again until the main scan magnification is acceptable.
8. Perform Line Position Adjustment (SP5-993-02).
Copyright     2003 RICOH Corporation. All rights reserved.
TECHNICAL SERVICE BULLETIN
G060/G570 – 038
Choose the tray containing the target paper size.
1-dot trimming pattern
Black
Single Color
1200 x 1200 or 1200 x 600
Execute
08/04/2003
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