Adjusting The Backlight; Adjusting The Contrast - JRC JLR-20 Instruction Manual

5.2.3 Adjusting the Backlight

The brightness of the display can be set to one of four levels.
The brightness is set to medium when the unit is turned on.
Each time the
Bright (MAXIMUM) → Medium (TYPICAL) → Dark (MINIMUM) → Off → Bright (MAXIMUM) →
Memo
Level settings can be performed for all brightness levels except "Off". (Refer to "5.3.1 Display
Settings")
The key panel brightness changes in accordance with the display brightness.

5.2.4 Adjusting the Contrast

The contrast of the display can be set to one of 13 levels.
Each time the
5-6
key is pressed, the brightness of the backlight cycles as below:
key is pressed, the display contrast decreases.