Product data

WN-5220-V Module Level Service Guide
35
Troubleshooting
Power and Start-Up Problems
When AC power is applied to the unit by turning on the main AC power switch, the unit enters
a 3-minute standby-delay sequence. During this time, the STBY lamp on the rear panel flashes
and the Lamp and Fan lamps are off. Also during this time, the unit does not respond to remote
or manual controls and alerts you that it is locked by giving 3 short beeps when you press a
button on the remote control.
The unit enters the standby mode when the 3-minute standby-delay is complete. This is shown
when the STBY lamp comes steadily on. At this time the unit is ready to accept an “ON”
command.
This is the sequence of events that must occur for a WN-5220-V-V to light the lamp and display
an image.
Normal Power-Up
Sequence
Sequence Note Failure Symptoms At This Part Of
The Sequence
1. Attach acceptable AC power
to VideoWall
Verify that 115V/230V switch is set
to the appropriate voltage!
2. Turn on main power switch
The main power switch is located
on the back of the VideoWall, next
to the connector that the AC
power cord plugs into.
3. Electronics go into standby-
delay mode
STBY LED comes on for a few
seconds and then flashes for 3
minutes
STBY LED comes on for a few
seconds and blinks for about 5
seconds when Lockout Disable is
marked in the Service Menu
STBY LED does not come on at all
• Check the voltage at the wall outlet
• Verify that the DC cable is correctly
plugged into the Electronics
Module and the Power Supply
Module
•
Check fuse at AC plug on Power
Supply Module
• Check the DC voltages on the cable
connector at the Electronics
Module. if any of them don’t
match the volta
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es on the wirin
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