Platen - Printronix SLPA7000 User Manual

Chapter 6
Removal And Replacement Procedures

Platen

Removal
1. Prepare the printer for maintenance (page 223).
2. Open the pivoting deck by rotating the deck lock lever fully clockwise.
3. Loosen the top and bottom screws securing the stepper motor.
(Figure 45, page 264, items 11 and 12.)
4. Rotate the motor clockwise to loosen the drive belt.
5. Tighten the top screw to hold the stepper motor temporarily in place.
NOTE: Do not remove either belt from the cluster pulley. You can remove
6. Remove two M5x10mm screws and the peel/tear assembly from the
lower support assembly. (Figure 48, page 272, items 5 and 6.)
7. Remove the retaining ring and wavy washer from the right side of the
lower support assembly. (Figure 50, page 280, items 3 and 7.)
8. Loosen the screw (two screws on early models) on the cluster pulley and
push the platen shaft through the cluster pulley until it is clear of the shaft.
(Figure 45, page 264, items 8 and 13.)
CAUTION
On the early model aluminum cluster pulley only: if the screw(s) cannot
be loosened without damaging the screw hex socket or the hex key, use
a heat gun to heat up the cluster pulley.
Installation
1. Hold the cluster pulley in position as you install the platen through the
right side of the lower support assembly.
2. Install the wavy washer and retaining ring to the right side of the lower
support assembly. (Figure 50, page 280, items 3 and 7.)
3. Position the peel/tear assembly on the lower support assembly and install
two M5x10mm screws. (Figure 48, page 272, items 5 and 6.)
4. Using a feeler gauge, leave a 0.077 inch (1.96 mm) gap between the
cluster pulley and the frame, then torque the cluster pulley screw(s):
18 in-lb. for the early two screw version or 25 in.-lb. for the later one screw
version.. (Figure 45, page 264, items 8 and 13.)
5. Loosen the top screw on the stepper motor to allow the spring to provide
the correct tension to the platen drive belt, then tighten both screws.
(Figure 45, page 264, items 11 and 12.)
6. Make sure the lower portion of the rewinder belt is over the belt tensioner.
7. Restore the printer to operation (page 224).
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and install the platen quicker with the belts in place.