IBM 3112, Service Manual

Page: 66 / 184

bh1s.bk : bh1saids.doc 50 Thu Apr 20 12:42:16 1995
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Service Manual
Top Margin and Duplex Quick Tests
The Top Margin and Duplex Quick Test are used together to adjust
the duplex front-to-back registration. Make sure the non-duplex
page registration is correct before adjusting the duplex top margin.
1. Enter Diagnostics mode.
2. Select [DUPLEX TESTS].
3. Select [Top Margin].
4. Select [+] or [-] to raise or lower the back image 0.01 inches per
increment.
5. Press Return to return to the diagnostic menu.
The Duplex Quick Test is used to verify the Duplex Top Margin.
1. Enter Diagnostics mode.
2. Select [DUPLEX TESTS].
3. Select [Duplex Quick Test].
4. Press Return to return to the diagnostic menu.
There is some variation in the image position from sheet to sheet.
Print three or four test pages at each setting.
Transfer
This setting varies the transfer voltage offset slightly. In normal
environments it will not result in a visible difference in the printout. In
extreme environments with unusual papers this setting may be
helpful. Do not change this setting unless replacing the transfer roll
assembly did not correct the problem.
1. Enter Diagnostics mode.
2. Select [PRINTER SETUP].
3. Select [Transfer].
4. Select [Low], [Medium], or [High].
5. Press Return to return to the Diagnostics mode main menu.