Maintenance Manual SP 40
Rev. 005
38
Chapter 2
Removals
2.14 Front Roller Assy
DANGER : To prevent serious personal injury from electrical shock always turn the printer off and unplug
the power cable before to remove the front roller assy.
Front roller assy are item 45 of figure 2.17. Front roller assy is composed by a double couple of roller. Each of
the couple has a metal roller near a rubber one. On the printer are installed three front roller assy together
ingaged by plastic couplings.
To Remove:
1) Remove the top and the main cover assy (see chapter 2.2).
2) Remove the inked ribbon cartridge.
3) Unhook the springs (item 27 of figure 2.17) from both the side of the algner (item 51 of figure 2.17).
4) Extract and remove the aligner from the drive aligner assy (item 40 of figure 2.17).
5) Remove the circlip (item 29 of figure 2.17) fixing the spring bar to the left frame.
6) Loose the allen screw (item 53 of figure 2.17) without remove it. Just to give enough clearance to the
spring bar (item 39 of figure 2.17).
7) Move before the spring bar toward the right side through the hole on the right frame and then extract it
together to the drive aligner assy from the center of the printer.
8) Remove the roller assy.
To Install:
To install, follow the removal step in reverse order.
REMARK:
This installation requires an appropriate selector cam adjustment here below described and showed also in the
chapter 8 (Adjustment).
At the point 6) of reassembly operations is important to tight the allen screw in the correct way.
a- Rotate the selector cam forward until the stop point is found.
b- Push down the drive aligner assy together to the spring bar in order to put in touch the spring pressor (item
41 of figure 2.16) with the spring.
c- Respecting the point a- anb b- tight the allen screw.
REMARK:
When the printer has already worked several time, it is strongly suggest to replace all the front rollers assy.
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