Here's how to adjust the display contrast and brightness in the TM-6 PRO:
- Press MENU.
- Cursor to highlight "SYS," and then press ENTER.
- Use the cursor up/down buttons to highlight "Options," and then press ENTER.
- Cursor to LCD Contrast or LCD Brightness.
- Press the ( + ) or ( - ) button to adjust the value (1-16).
- Press EXIT when you're finished.
The new settings are saved automatically.