SX
™
Service and Maintenance Manual 3-54 960714-02B © 2007 I2407
SECTION 3 – COMPONENT REPAIR
ELECTRICAL COMPONENTS (1099 & 1108)
PRINT HEAD STEPPER DRIVE (con’t)
3. Locate the Print Head Stepper Drive (Figure 3-
141).
Note: Depending on your version of the Sharp
SX
TM
Bagger, the orientation of the stepper
drive will vary; the wiring however is exactly the
same.
4. Remove all connections from the Stepper Drive
5. Remove the screws holding the stepper drive
to the Base Plate and remove drive.
6. Position replacement Stepper Drive in the
same orientation as the old drive.
7. Screw new Stepper Drive to Base Plate.
8. Reconnect all wires; there are nine lines
(Figure 3-143).
9. If you ordered a replacement Stepper Drive
from Sharp Packaging, it will be pre configured,
proceed to step 17.
10. Set the POTs to their maximum value (Figure
3-143).
11. Set the configuration DIP Switches (Figure 3-
143).
12. The Speed POT controls the speed of the Print
Head and requires fine tuning. Using a small
screwdriver, turn the brass adjusting knob
counterclockwise as far as it will go.
13. Turn the Speed POT five full rotations
clockwise. This will get the speed close to its
correct value.
14. Set Jumper to “SLEW” (Figure 3-142).
Figure 3-142. Print Head Stepper Drive
Figure 3-143. Print Head Stepper Drive
Speed
POT
DIP
Switches
ON-OFF
POTs
Jumper
Figure 3-141. Print Head Stepper Drive
(Electrical assembly isolated for clarity)
Print Head
Stepper Drive