Specifications

4–18 Adjustment Procedures
Platen Gap Adjustment (Figure 4–9 )
1. Prepare the printer for maintenance (page 4–2).
2. Open the printer cover.
3. Remove the shuttle cover assembly (page 5–24).
4. Remove the ribbon.
5. Raise the forms thickness lever (1) to the fully open position.
CAUTION
Do not force the platen against the feeler gauge. Damage to the printer
will result.
6. Insert a 0.010 inch flat feeler gauge (2) straight down between the platen
(3) and ribbon mask (4), within four hammer positions of the end of the
hammer bank.
7. Gently close the forms thickness lever (1) until the hammer tips and
platen contact the feeler gauge. With the forms thickness lever closed all
the way, the feeler gauge should contact both the tips and the platen and
move with light friction. Shift the gauge slightly to verify.
8. Adjust the gap as required by manipulating the set screw (5) located at
each end of the platen (3). Check the gap at both ends of the platen after
each adjustment of a set screw.
9. Repeat steps 4 through 7 at the other end of the hammer bank.
10. When the platen gap is correct at both ends of the platen, install the
ribbon.
11. Install the shuttle cover assembly (page 5–24).
12. Adjust the platen open belt (page 4–8).
13. Return the printer to normal operation (page 4–22).