Toshiba DP3500, Service Handbook

Page: 48 / 257

December 2000 © TOSHIBA TEC 2 - 9 DP4500/3500 ADJUSTMENT
(e) Image position adjustment of the primary scanning direction during duplex printing (the adjustment of
the laser writing start position)
(e-1) Adjustment for long-sized paper
1. Turn ON the power while the digital keys [0] and [5] are pressed simultaneously.
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(Adjustment mode)
2. Press [3]
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[FAX] (A grid pattern is printed out on both sides of the paper: Use A3 (LD) in the lower
cassette.)
3. Check the grid pattern on the back side of the paper. Measure the distance E from the leading edge of
the paper to the 6th line of the grid pattern.
4. Check if the distance E is in the range of 52 ± 0.5 mm.
5. If not, change the value taking the following procedure and measure the distance E again.
<Procedure> (Adjustment mode)
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(Enter the code [498] with the digital keys)
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Press [0]
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[START]
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(Enter a value (acceptable values: 0 to 255) with the digital keys)
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Press the [SET] icon or the [INTERRUPT] key to store the value in the RAM.
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“100% A” is displayed.
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Press [3]
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[FAX]
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(Grid patterns are printed out on both sides of the paper)
*The larger the adjustment value, the longer the distance E becomes
(approx. 0.5 mm/10 steps).
(e-2) Adjustment for short-sized paper
After the adjustment for long-sized paper is completed, apply the same adjustment value for short-sized
paper.
<Procedure> (Adjustment mode)
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(Enter the code [498] with the digital keys)
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Press [1]
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[START]
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(Enter the same value entered for long-sized paper with the digital keys)
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Press the [SET] icon or the [INTERRUPT] key to store the value in the RAM.
Note: The first line of the grid pattern is occasionally not printed out.