Symptoms When The All Function Test Is Executed - Epson TM-U220 Series Service Manual

Confidential
Table 3-17 Paper Jams
Probable part/probable cause
Paper guide rollers (1045)
Roll paper holder plate (508)
Printing is loud
Table 3-18 Noisy Printing
Probable part/probable cause
Roll paper is inserted
incorrectly
Adjustment roller shaft holders
(506)

Symptoms when the All Function Test is Executed

When an error occurs during printing: Refer to page 3-9.
When paper is cut incorrectly: Refer to page 3-11.
Rev. B
Checkpoints
Check operation. Make sure the 2 rollers
rotate smoothly.
Check for defects. Make sure you see no
defects, such as wear.
Check for defects. Make sure you see no
defects, such as deformation.
Checkpoints
Check the roll paper. Make sure it meets
specifications and is loaded correctly.
Check the platen gap adjustment.
0.45 mm: falls with no weight applied
0.55 mm: does not fall
TM-U220 Type A Service Manual
Action to correct the problem
Clean, so that both paper guide
rollers (1045) rotate correctly.
Completed if operation is normal.
Replace the mechanism
assembly (120). Completed if
operation is normal.
Replace the roll paper holder
plate (508). Completed if
operation is normal.
Action for the problem
Load roll paper that meets
specifications correctly.
Completed if printing noise is
reduced.
Adjust the platen gap. (Refer to
page 5-5.) Completed if the
printing noise is reduced.
Troubleshooting 3-15