Epson TM-J7200 Technical Reference Manual page 48

In 1 and 2, the following guidances are printed, the Paper LED flashes, and instructs the user's operations.
48
1. Continuing self-test guidance
Select Modes by pressing Feed Button.
Continue SELF-TEST: Less than 1 second
Mode selection : 1 second or more
2. Mode selection guidance
Mode Selection
Modes
0: Exit and Reboot Printer
1: NV Graphics Information
2: Customize Value Settings
3: Ethernet Setup
4 or more: None
Select Modes by executing following
procedure.
step 1. Press the Feed button less
than 1 second as many times
as the selected mode number.
step 2. Press Feed button for 1
second or more.