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Diode replacement
■
Hazardous voltage. Contact with high voltage may cause death or serious injury.
WARNING
Always disconnect power to unit prior to service.
Remove the diode module
1.
Remove power from the sign. Note there may be more than one power source present.
2.
Open the sign. See "Opening a sign" on page 5-1.
3.
Turn the sign breaker to the OFF position. Note there may be more than one breaker in a sign.
4.
Remove the power panel cover.
5.
Loosen the screws to disconnect the wiring from the diode module.
6.
Remove the nuts (circled in Figure 5-7) securing the diode module to the power panel plate.
Install the replacement diode module
1.
Apply thermal joint compound (pn 67004105) to the bottom of the replacement diode module (pn 30300003LFSP).
2.
Bolt the replacement diode module to the power panel plate.
Module 30300003LFSP will mount to 8-32x1" screws.
3.
Reconnect wiring to the diode module and tighten the screws.
Connections
4.
Close the sign.
5.
Return power to the sign.
A
X
2020 RGB F
LPHA
PRESS
RONT
A
F
-M
D
S
CCESS
ULL
ATRIX
ISPLAYS
Nuts
O
M
IGN
PERATION AND
AINTENANCE
D
IODE REPLACEMENT
. B)
M
(PN 1523610201
ANUAL
REV
5
5-9
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