How to replace
Removal
1 • Remove the lamp cover A, back cover B, right hand end plate C and right
hand drum cover D, (section 4•2 steps 1-4).
2 • Remove the hardware unit, (section 4•5 steps 2-6).
3 • Loosen the three 3 mm set screws A securing the three RGB fibre optics
cables to the sensor and carefully remove the cables
Note: mark the cables as necessary to ensure correct refitment.
4 • Disconnect the two 2 pin, 6 pin and 8 pin connectors to the aperture and
focus zero switches, aperture motor and focus motor of the sensor module.
5 • Loosen the 3 mm set screw B securing the sensor optics holder over the
lens of the sensor and remove the holder.
6 • Remove the four 4 mm allen screws C securing the sensor to the mainframe
of the scanner and carefully remove the sensor module from the rear.
7 • Remove the halogen lamp bracket by loosening the one allen screw under
the bracket, (for earlier model ScanMates), or loosening the two allen
screws either side of the bracket (for later model ScanMates)
Note: removal is for adjustment of the focus motor for sensor adjustment.
Assembly
8 • Mount the new sensor module and fit the four 4 mm allen screws C.
9 • Refit the optics holder to the sensor lens and tighten the 3 mm set screw B.
10 • Refit the three RGB fibre optic cables as marked in step 3, and tighten the
three 3 mm set screws A.
Note: avoid bending the fibre optics cables excessively.
11 • Reconnect the two 2 pin, 6 pin and 8 pin connectors to the aperture and
focus zero switches, aperture motor and focus motor respectively.
12 • Partially refit the hardware unit, (section 4•5 steps 7-10).
13 • Carry out the adjustment and test operations specified below.
14 • Refit the halogen lamp bracket and tighten the allen screw(s).
15 • 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
A on each side of the unit.
16 • If no further replacement operations are required, refit the covers removed
in step 1 in accordance with section 4•2.
Adjustments and tests required
Focus (section 5•3) and light tube (section 5•2).
White calibration in transmission and reflection (section 5•5).
Focus calibration (section 5•4) and focus sharpness (section 5•11).
Register error (section 5•12) and stripes in shadow (section 5•13).
Zero point horizontal (section 5•7) and zero point vertical (section 5•8).
Service Manual • ScanMate 4000/5000 Edition 1 • January 1996
Sensor Module
4•4b
To Next Page
Loading...