Agilent Technologies Ininiium 90000 Specifications Page 72

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  • TROUBLESHOOTING
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Chapter 4: Troubleshooting
Display Trouble Isolation
72
No Display Trouble
Isolation
Remove cabinet and
install fan guard
Check fan
connections and
power-on
Fans running?
Power LED lit?
Connect external
monitor, cycle power,
and check power up
sequence
Power-up
displayed on ext.
monitor
Replace Display
Board
Go to Primary
Trouble Isolation
Go to 'Power Supply
Trouble Isolation.'
Go to 'To check the
backlight Inverter
voltages.'
Display on
oscilloscope?
Yes
No
Yes
No
Replace
Motherboard
Assembly
No
No
A
B
C
D
E
54830F02a
Display on
oscilloscope?
No
Done.
Yes
Display on
oscilloscope?
Done.
Yes
No
Check the display
board video signals
Done.
Yes
No
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