Epson TM-U220 Series Service Manual page 22

Confidential
Report print
Normal print result
Self-test Procedure
The method of Self-test with panel operation indicated in the steps below.
1. Make sure the printer is turned off and the roll paper cover is closed properly.
2. While holding down the FEED button, turn on the printer using the switch on the front of
the printer. The self test prints the printer settings and then prints the following, cuts the
paper, and pauses. (The PAPER OUT light blinks.)
If you want to continue SELF-TEST printing, Please press the FEED button.
3. Press the FEED button to continue printing. The printer prints a pattern using the built-in
character set.
4. The self test automatically ends and cuts the paper after printing the following:
The printer is ready to receive data as soon as it completes the self test.
Note:
If you want to pause the self test manually, press the FEED button. Press the FEED button again to
continue the self test.
2-12 Repair Guide
Explanation
Execution date is printed.
Execution time is printed.
"EPSON" is printed.
"TM-U220" is printed.
Serial no. for the product is printed.
Execution status of all function test is printed.
Test result of sensor operation is printed. *1)
Note:
*1) When it is not OK by operating such as the cover
and skipped using the button on the screen, there is
a problem on the item. (Refer to "Cannot pass are of
the tests for a sensor." on page 3-18.)
*** completed ***
Rev. A