DMP 420  (260-1267)             Ribbon                 Faxback Doc. # 4641

Fabric Cartridge (260-1418)

If the ribbon cassette is already installed, simply check to see that it is 
properly threaded between the paper and the Print Head.

If the ribbon cassette is not installed, or if it must be replaced due to 
excessive wear or faint printing, follow this procedure:

1. Set the power switch to OFF.

NOTE: When you turn the power OFF, any information stored in the printer's 
buffer will automatically be lost.

2. Remove the Top Cover and gently move the Penetration Control Lever to-
   ward the front of the printer as far as it will go.

3. Gently grasp the Ribbon Cassette at the corners nearest the paper (to-
   wards the rear of the printer) and remove the cassette by lifting it 
   upwards.

4. Unwrap the new cassette and remove the packing foam.

Before inserting the new cassette, tighten the ribbon by turning the knob 
in the direction indicated by the arrow.

5. Gently press the cassette down until it is firmly secured by the "stop-
   perclaws."

Do not force the cassette into place! If the cassette is not properly fit-
ted, the Cassette Knob will not match up the shaft from the carriage. Do 
not force the cassette down but fit it in gradually while turning the 
Cassette Knob in the indicated direction.

6. Once the new cassette is installed, gently slide the ribbon in between 
   the paper and the Print Head. Tighten the ribbon by turning the Cas-
   sette Knob in the indicated direction.

7. Move the Carriage back and forth manually to check that the ribbon ad-
   vances properly. If the ribbon has not been properly fitted between 
   the paper and Print Head (i.e., into the Print Head Ribbon Guide 
   Bezel), the ribbon feed will not operate smoothly.

8. Move the Penetration Control Lever towards the rear of the printer.

9. Replace the Top Cover.

REMEMBER!! It is extremely important that the Print Head is as close to the 
paper as possible; otherwise damage to the Print Head may occur. Simply 
move the Penetration Control Lever towards the paper and move the Carriage 
back and forth until smudging occurs. Then gradually move the Print Head 
away from the paper until the smudging stops.


(smm 07/27/93)