Samsung SRP-350 Operator's Manual page 6

Chapter 3. The self test
The self-test checks whether the printer has any problems. If the printer does not function
properly, contact your dealer. The self-test checks the following;
1. Make sure paper roll has been installed properly.
2. Turn on the power while holding down the FEED button. The self-test begins.
3. The self-test prints the current printer status, which provides the control ROM
version
and the DIP switch setting.
4. After printing the current printer status, self-test printing will print the following, and
pause (The PAPER LED light blinks).
Please press the FEED button
5. Press the FEED button to continue printing. The printer prints a pattern using the
built-in character set.
6. 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.
Self-test printing.
*** completed ***