Specifications
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Troubleshooting the 
Agilent V24/V26 Series
 Reapply power to the monitor and see that fuses do not blow. If the fuses blow again, 
replace the Power Supply Assembly (see “Chapter 8 Repairing the Agilent Model 
V24CT/V26CT”). 
 If the MIDDLE LED (+5Vdc logic supply to System Board) and the RIGHTMOST LED 
(12V) are extinguished. 
D Turn off power. 
E Disconnect the CPU/Power Board cable from the power supply assembly.
F Reapply power. 
G Check LEDs. If on, replace the System Board. If off check and replace power switch 
assembly or power supply assembly if needed.
 If only the RIGHTMOST LED (+12V/60V) was extinguished and the MIDDLE LED is 
on, look to see if message “only 6 slots may be occupied by modules” is displayed on 
screen. If the message is displayed, refer to “Parameter Rack/Module Fault (Model 
V24CT/V26CT)” on page 14. If the message is not displayed perform the following 
steps:
D Turn off power. 
E Disconnect the CPU/Power Board cable from the power supply assembly.
F Reapply power. 
G Check LED. If on, replace the System Board. If off, check fuse F3. If it is good, 
replace the Power Supply Assembly (see “Chapter 8 Repairing the Agilent Model 
V24CT/V26CT”). If F3 is blown, replace it. Reapply power to the monitor and 
observe the fuse does not blow. 










