Basic Operating Test; Backlight Test; Display Test; Figure 1-1 Lcd Display Screen - Agilent Technologies U1231A Service Manual

Basic Operating Test

Backlight test

Display test

U1231A/U1232A/U1233A Service Guide
The tests listed below are used to test the basic operability
of the instrument. Repair is required if the instrument fails
the any of the tests.
•

"Backlight test"

•

"Display test"

Power- on the multimeter and press the
that the LCD backlight is turned on. Press the
to turn the LCD backlight off.
Next, press and hold the
Check that the LED flashlight is turned on. Press and hold
the key for more than 1 second again to turn the LED
flashlight off.
Press and hold the
to any other position (OFF to ON). Check that all the
annunciators are displayed in the LCD. Compare the display
with the example shown in
this mode.

Figure 1-1 LCD display screen

Calibration Procedures

Basic Operating Test

key once. Check
key for more than 1 second.
key while turning the rotary switch
Figure 1- 1. Press any key to exit
1
key again
5