Screen Is Blank - Philips Avalon FM20 Service Manual

Symptoms
Green LED blinks
(indicating cyclic reboots)
No Test Sound issued
or
INOP
Speaker Malfunct
issued

Screen is Blank

The information listed in this table is only valid if the boot phase has completed without error. See
"Boot Phase Failures" on page 110 table for a description of the boot phase.
Symptoms
Display is blank or
brightness is reduced
Possible Causes of Failure
Hardware failure
Software fault
Hardware failure
Speaker cable disconnected
Speaker defective
Main CPU Board defective
Possible Causes of Failure
Display Adapter Board cable not connected Check cable connection of the Display
Backlight tubes defective
Back-light inverter defective
Display adapter board defective
LCD flat panel defective
Main CPU Board defective
8 Troubleshooting
Failure Isolation and Remedy
Connect Support Tool directly to monitor
with a crossover cable and start "search for
defective devices".
If no device is detected, proceed as
described above in the section "Green LED
stays on continuously".
If the Support Tool can detect the device
and it indicates the Operating Mode is
'Boot', download and store the status log.
Reload the software and re-clone the
monitor. If this fixes the problem, e-mail the
status log to your local response center.
If this does not rectify the problem, follow
the instructions under "Green LED stays on
continuously".
Check the speaker connections.
Check for INOPs and follow the
instructions.
Exchange the speaker.
Exchange the Main CPU Board.
Failure Isolation and Remedy
assembly to the Recorder Adapter Board.
Replace the Display assembly.
Replace the Main CPU Board.
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