Monarch Instrument 9830TM - Manual (Page 75)

9820/9830/9835 Service Manual Model 926 Knife
68 TC9830SM Rev. B 7/98 Confidential July 1998
J1 To Motor J4 To 928 Stacker
J2 To Solenoid J5 To Printer Daughter Board
J3 To Printer Control Board
Figure E-4. Drive Board Connector Locations.
Blade Assembly Replacement
1. Turn printer off.
2. Remove 928 Stacker Assembly. See Appendix D.
3. Remove three cover screws to gain access to the
Blade Assembly.
4. Note the position of the Blade Assembly in
relation to its mounting frame. This relationship is
critical to provide a straight cut from left edge to
right edge of tag.
5. Using an Allen wrench, remove two cap screws
that attach the knife unit to its mounting frame.
6. Disconnect solenoid at connector J2 on Drive
Board.
7. Remove the Knife Blade Assembly.
8. Reassemble in reverse order.
NOTE: Carefully align the edge of the knife
assembly to the mounting frame. There
should be almost no variation side to side
on a cut tag (0.030 +/- 0.020). The
mounting hole closest to the operator panel
is slotted for this adjustment.
9. Adjust Blade Assembly. When a straight cut
across the tag has been achieved, lock down all
adjustments.
10. Run 50 - 100 tags to verify proper cut operation.
11. Replace the knife cover.
12. Attach the Stacker Assembly, see Appendix D.
13. Turn printer on and test for correct operation.
Drive Board Replacement
Replace the Drive Board using the following
procedure:
1. Turn printer off.
2. Remove the Stacker Assembly, see Appendix D.
3. Remove three cover screws to gain access to the
Drive Board.
4. Note the positions of all wiring harness
connections.
5. Disconnect each harness from the Drive Board.
6. Lift the Drive Board off its standoffs.
7. Reassemble in reverse order.
8. Attach the 928 Stacker Assembly and test for
correct operation.
Motor Replacement
1. Turn printer off.
2. Remove 928 Stacker Assembly. See Appendix D.
3. Remove three cover screws to gain access to the
motor.
4. Remove two motor mounting screws and remove
motor.
5. Remove knife motor wiring at motor connector.
6. Loosen the pulley set screw and remove pulley.
Make sure set screw is on flat of shaft.
7. Reassemble in reverse order.