JRC JMR-92 Series Field Service Manual page 848

7.2.5 Testing the Brightness of LED [Light Test]
Test the brightness of LED.
1.
Click on the [Menu] button on the left toolbar.
The menu is displayed.
2.
Click on the [Maintenance] - [Diagnosis] - [Light Test] button on the menu.
3.
Click on the [Light Test Start] button.
An LED brightness test starts. All the available brightness levels can be tested by
increasing the level from 0.
7-25 Chapter 7 Troubleshooting