Instruction manual

Chapter 11 239
Setting and Using the Control and Management Facilities
Turning OFF the LCD Display’s Backlight
11. Setting and Using the Control and Management
Facilities
Turning OFF the LCD Display’s Backlight
The following procedure can be used to turn off the backlight (illumination) of the 4287A’s
LCD display. Turning off the illumination helps extend the service life of the backlight
when the unit is used in continuous operation.
NOTE For how to perform the instruction “press the key (softkey) in the softkey menu”
mentioned in the procedure, see “13. Softkeys” on page 87.
Step 1. Press the [System] key on the front panel to display the System softkey menu.
Step 2. Press the SERVICE MENU key in the softkey menu to display the SERVICE MENU
softkey menu.
Step 3. Press the BACK LIGHT [ ] key to turn the backlight ON or OFF (the setting toggles with
each press of the button).
NOTE If the backlight is turned off, nothing is visible on the LCD display. When operating the
softkeys manually in this condition, it is necessary to view the display on an external
monitor connected to the 4287A.
If the backlight is turned off by mistake and operation is impeded, press the [Preset] key
on the front panel to return the 4287A settings to the preset condition (in the preset
condition the backlight is on).
Softkey Label Backlight Status
BACK LIGHT [ON]
On (illuminated)
BACK LIGHT [OFF] Off (no illumination)