JRC JLR-30 User Manual

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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 key is pressed, the brightness of the backlight cycles as below:
Bright (MAXIMUM) → Medium (TYPICAL) → Dark (MINIMUM) → Off → Bright (MAXIMUM) →
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 key is pressed, the display contrast decreases.
Memo

JRC JLR-30 Specifications

General

Brand	JRC
Model	JLR-30
Category	Marine GPS System
Language	English