Monarch Instrument 9830TM - Manual (Page 38)

Service Procedures 9820/9830/9835 Service Manual
July 1998 TC9830SM Rev. B 7/98 Confidential 31
Print Assembly Removal
1. Remove two screws holding pivot retainers to the
frame.
2. Lift the upper supply guide and remove the
retainer pins from the upper supply guide.
3. Remove the magnet from the tunnel housing on
the side facing the Control Board Assy. See
Figure 6-6. Save the magnet.
Figure 6-6. Print Assembly Plate & Printhead
Module.
4. Reassemble in reverse order.
5. Adjust ribbon tension. See Chapter 5.
FEED ASSEMBLY
Maintenance of the Feed Assembly involves:
•
removing the latch fascia and platen module.
•
replacing the platen module.
•
removing the sensor and lower supply guide.
•
replacing the bi-cell sensor and supply guide.
TOOLS/MATERIALS REQUIRED:
•
Phillips Screwdriver
•
Flat-head Screwdriver
•
Ribbon spool intermediate gear retaining clip.
Latch Fascia Removal
1. Remove cover housing.
2. Remove snap pin from rear latch fascia by prying
gently outward with a screwdriver.
WARNING
Leave the printhead latched to hold the latch knob in
place, or it may fly off and cause harm.
Figure 6-7. Latch Removal
3. With the printhead latched, remove the latch
fascia. See Figure 6-7.
4. Carefully unlatch and raise printhead.
5. Pull latch knob away from platen frame until the
stop tab disengages from the frame.
6. Rotate latch knob counterclockwise until all spring
tension is relieved.
7. Remove latch knob and spring.
8. Remove the front exit door by lightly pressing one
side, until the hinge pin clears the platen frame.
9. Reassemble in reverse order.
Platen Module Removal
1. Remove the backing paper deflector.
2. Remove the three phillips screws that hold the
feed module to the printer base.
3. Lift up on the outboard side of the platen module
to allow the platen roller gear to clear the
printhead alignment bracket.
4. Rotate the platen module counterclockwise to
make room for removal of the platen assembly.
CAUTION
The sensor harness limits platen rotation. Be careful
not to damage the harness.
Latch Knob
Spring
Pivot Retainer
Magnet