Front Panel Display Trouble Isolation - Keysight 9000 Series Service Manual

Chapter 4: Troubleshooting

Front Panel Display Trouble Isolation

Front Panel Display Trouble Isolation
Check display cable
connection to display card
and LCD
front panel
display work?
Try a golden display
card to verify failure
display work
Yes
Yes with golden card?
Replace
display card
Replace LCD
68
Front Panel Display Trouble Isolation
Connect external monitor to VGA port. Turn unit on.
external monitor?
Does
Check inverter board
control cable
Check voltage on pin 1 of
J3 on display card. Should
Does
Go to "Primary Trouble Isolation"
Does
display
appear on
Yes
Is
front panel
black?
be 12 V.
Is
voltage
display card
OK?
Replace LCD
Does
front panel
display
work?
Replace
motherboard
Replace
Replace
inverter