How to adjust
1 • If access is not already available, remove the following covers:
Lamp cover A and back cover B, (section 4•2 steps 1 and 2).
2 • Remove the two 2.5 mm countersunk screws from each side of the
hardware unit and pull the unit partially out.
3 • Insert the back plane extender onto connector J1 on the driver board
and push the hardware unit back in.
4 • Fit a terminator to a SCSI connector on the scanner and SCSI cable
and RS 232 service cable to the scanner and PC.
5 • Set the Dip switch to 8, (on).
6 • Cover the side of the heat sink on the driver board, (see the “caution”
on the previous page).
7 • Turn on the PC or Mac and scanner and start up Photoshop plug-in.
8 • Carry out a white calibration in transmission (section 5•5).
9 • Mount the ScanView focus adjust target firmly on the drum so that
the middle of the target is approximately over the horizontal line,
(fig. 1).
10 • Access the service program main menu (section 3•5).
11 • Position the target over the sensor lens by selecting 1, (Move drum
Z/P/L/.) and then ., (“dot” - allows setting your own drum position
parameters). Finally select q, (utility end).
12 • Connect the oscilloscope signal probes to TP46, (channel 1), TP100
(ground) and TP57, (use channel 2 as trigger).
13 • Select 0, (Toggle lamps) to turn on the transmission light.
14 • Select channel 1 on the oscilloscope.
15 • Select 4, (Choose aperture) and choose aperture 1.
16 • The maximum focus is now shown on the oscilloscope, (fig. 2).
17 • Remove the oscilloscope and the cover over the driver board heat
sink.
18 • Remove the driver board extender, carefully push the hardware unit
fully in, (connector J1 on the driver board mates with the backplane)
and fit the two 2.5 mm countersunk allen screws on each side of the
unit.
19 • If no further adjustment or replacement operations are required,
refit the covers removed in step 1 in accordance with section 4•2.
Service Manual • ScanMate 4000/5000 Edition 1 • January 1996
Focus Test
5•10b
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