Specifications

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Troubleshooting the
Agilent V24/V26 Series
 For the CT model only, check battery operation by disconnecting the AC power cord
from the AC power source.
___The leftmost LED on the power supply should go out after a few seconds. The other two
LEDs to the right of it should remain illuminated.
___The battery fuel gauge should display on the screen indicating the capacity of the
batteries. If the battery fuel gauge indicates that the batteries are discharged, reconnect the
AC power cord to recharge batteries or replace with fully charged batteries.
___If the Flat Panel display dies when AC power cord is removed, the batteries are either not
present or are discharged. Check to see if the batteries are present. If the batteries are not
present, install batteries. If batteries are present, reconnect the AC power cord to recharge
batteries or replace with fully charged batteries. see “Replacing Lead-Acid Batteries” on page
9-18 for information on installing batteries.
___If charged batteries are installed but the battery indicator does not appear on the display,
the mechanical contact that drives the indicator is faulty. See “Battery Problems” on page 14
or replace the power supply assembly to correct the fault. See “Removing the Power Supply
Assembly” on page -10 for information on replacing the power supply assembly.
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__If thePRQRFKURPH Flat Panel backlight fails to light, the source of the problem may be
the cable connecting the System Board to the Flat Panel Adapter Board, Flat Panel Adapter
Board, cable connecting Flat Panel Adapter Board to Flat Panel, or the backlight.
__If the monochrome screen is either all white or deep blue, and doesn’t change with
movement of the contrast control thumbwheel, the problem could be failure of the Flat Panel
contrast circuit on the Flat Panel Adapter Board, the contrast control potentiometer, or cable.
__If the monochrome screen can be adjusted in brightness by the contrast control, but there is
no display, then the System Board, Flat Panel assembly, or possibly cables could be
defective.
The backlight inverter circuitry is located on the monochrome Flat Panel Adapter Board.
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