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Scanner Maintenance
Drive belt system
9.6.3. Adjusting belt tension and head CD alignment
Adjust the head drive belt tension under these conditions:
•
The heads do not hold the cross direction (CD) alignment.
•
The head drive belts have been replaced.
•
Possible other maintenance procedures that require the loosening
of the head drive belts.
The procedure for adjusting the head drive belt tension is:
1.
Scan the heads offsheet on the cable end of the scanner and turn off
the Motor Power keyswitch (see Figure 9-9).
WARNING
:
To perform any maintenance, troubleshooting, or
replacement of components, ensure that power is
disabled at the breaker.
2.
Remove the beam covers from the scanner. See Subsection 9.1.7 for
procedure.
3.
Place the tensiometer on the upper belt at mid-span between two of
the belt supports.
4.
The belt tighteners are located where the head drive belt attaches to
the upper and lower carriages. Adjust the belt tighteners until the
weight on the tensiometer is approximately 9.5 mm ± 1.6 mm (3/8
in ± 1/16 in) from the bottom of the belt (see Figure 9-5). Ensure the
belt tension locking screws are tightened in order to lock the belt
tension.
p/n 6510020208
10/18/07
9-21
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