Printing Density is low
When printing density is low, please check below.
1. Check the printer ribbon whether it’s exhausted or not
2. Check the distance between printer head and platen.

Replace the printer head using the following procedure.
1. Loosen the ribbon frame.
2. Separate the head from the head cartridge and separate the FPC connector form the head.
3. Assemble the replaced head.
4. After assembling the head, adjust the head gap as explained above.
5. Assemble the ribbon frame.