Product data

WN-5220-V Module Level Service Guide
29
Power Supply
The Power supply module contains the following items:
• Fuse (in the AC Input Module)
• Power switch
• Voltage selector switch
• Fan relay
• Lamp Relay
• High voltage lamp power supply
• DC power supply
• AC line filter
• Cooling fan
The easiest way to diagnose a power supply problem is to check the voltages on the
cables coming from the Power Supply module. The following block diagram shows
what is connected to what in the Power Supply module and what the voltages should
be on a properly functioning VideoWall.
Power Supply Block Diagram
AC INPUT
MODULE
HV POWER SUPPLY
DC POWER SUPPLY
LAMP
RELAY
- 5
+5
Gnd
+12
FAN
RELAY
FAN
9/16" hole
Lamp fan +12VDC
LCD fan +12VDC
Lamp Control In
Fan Control
+5
Gnd
A
B
C
D
Brown
Green/Yellow
Brown
Green
Pin 3 is Line
Pin 1 is Neutral
- +
12
34
Blue
34
1
1
Lamp fan Gnd
Lamp fan Gnd
+12VDC to
Electronics
From Interlock Loop
+12V Fan
+5VDC to Electronics
+5VDC to Electronics
-5VDC to Electronics
Gnd to Electronics
Pin 2
Pin 3
Pin 6
Pin 4
Pin 5
Pin 1
Chassis Ground
Stud
From Electronics
J23-2
Black
Black
Red
Red
1
2
Violet
Black
Black
Yellow
Yellow
Orange
Lamp Control In Gnd
Fan Control Gnd
Orange
From Electronics
J23-3
2
3
4
6
8
9
10
11
12
To J12-2 Interlock 1
5
Lamp status feedback
1
2
Line
Neutral
Gnd
-+
2
7
Black
Gnd
Gnd to Electronics
Black
AC Line
Filter
Blue
Green/Yellow
Green/Yellow
To Lamp
To Lamp
Coil
T4
Lamp
Return
L
i
n
e
L
o
a
d
Brown
Blue
115V/230V
Voltage
Selector
Switch
1a
1b
1
C3/R1115V
230V
Orange
Orange
Orange
Green/Yellow
s
t
u
d