Star Micronics TUP500 series Technical Manual page 6

4. Set ordinary paper that is not used for black marks, in the PE/BM sensor unit shown below.
Use the release lever to open the platen unit (the TUP592 includes presenter unit), insert the paper from the paper
insertion inlet and then close the platen unit to set the paper.
5. Turn the power on. The LED on the control panel will flash two times, then the printer will enter the PE/BM sen-
sor adjustment mode.
6. Use a small regular screwdriver to slowly turn the VR1 clockwise, as shown in the drawing below. Adjust this to a
position where both LED1 (green) and LED2 (red) light.
7. Turn the power OFF.
8. Turn the DIP switch DSW 1-4 and DSW 1-5 to its original setting.
This completes the PE/BM sensor adjustment.
LED1 LED2
-  -
Control Panel
SW2 SW1