Equipment description
December 10, 2007
Front Access Full Matrix LED Sign Maintenance Manual (pn 1507610501 rev. A)
17
Inside view — 1.07-inch pitch sign
Figure 7.
Internal components of a 1.07-inch sign
Item
Name
Description
A
CONTROLLER PLATE
Mounting sub plate for controllers, outlet, fan monitoring board, and fan/heater control
relays.
B
INTAKE FAN (FAN #4)
Draws in air from outside.
C
HEATER #2
Used to control humidity inside sign.
D
AIR FILTER COVER
When removed provides access to fan air filters.
E
LOAD CENTER
Principal AC power for sign. 120VAC 20A service required.
F
POWER PANEL #3
Convert AC power from load center to DC power.
G
POWER PANEL #2
H
POWER PANEL #1
I
HEATER #1
Used to control humidity inside sign.
J
INTAKE FAN (FAN #1)
Draws in air from outside.
K
LIGHT SENSOR #0 — FRONT
The address number of a light sensor is set via SW1 and is the same as the light
sensor number. To replace light sensor board, remove the four nuts attached to the
mounting plate.
L
LIGHT SENSOR #1 — TOP
M
LIGHT SENSOR #2 — BACK
N
EXHAUST VENT (FAN #2)
Vents hot air inside the sign to the outside.
O
EXHAUST VENT (FAN #3)
P
LIGHT
Automatically turns on when front is opened.
A
B
D
F
E
G
H
C
M
I
N
O
J
K
L
D
D
P