Extron electronics Matrix 3200 Series User Manual page 49

Chapter 5 • Upgrades and Troubleshooting
Checking/Replacing the BME External AC Input Fuse
Checking/Replacing the BME Internal Power Supply AC Input Fuses
Redundant V+
Power Supply
would be
located here.
Figure 5-6.A
Extron • Matrix 3200/6400 Series • User's Manual
The AC power input cord plugs into the Power-Switch/Fuse assembly which is
located on the rear panel in the lower left corner of the BME. To check/replace the
external fuse, remove the power-cord and insert the tip of a small
screwdriver blade into the fuse-holder slot (the fuse-holder is located
just below the power switch). Pry the fuse-holder out, it contains the
AC input fuse plus a spare. If may be obvious that the fuse is blown,
if not, check it with an ohmmeter or any other continuity device if
available. If the fuse is blown, replace it with the provided spare. Plug
the AC power cord in and Power the BME ON. Verify that the unit
powered ON correctly (check Front Panel LEDs). If the LEDs are in
the proper state, the problem has been corrected. If not, contact
Extron Technical Support.
Each internal power supply has an AC input fuse. If a power supply fuse blows,
the Front Panel LED for that power supply will go OFF (it is normally solid ON). If
the BME has redundant power supplies, the redundant supply for the failed power
supply will assume the full load and its front panel diagnostic LED will blink
indicating that the Main (Primary) power supply is inoperative. To check/replace a
power supply fuse, unplug the AC power cord from the BME rear panel, remove
the Access Panel (see Page 5-2). The power supply fuse location is shown in
Figure 5-6.A (circled). Remove the fuse from the problem power supply. If may be
obvious that the fuse is blown, if not, check it with an ohmmeter or any other
continuity device if available. If the fuse is blown, replace it, plug the AC power
cord in, power up the BME and check Diagnostic LEDs. If the problem persists,
call Extron Technical Support.
Fuse
See note -
Page 5-2.
BME-
Exploded view.
Primary V+
Power Supply
2 0
PO
W ER
+ V SU
PP
-V LI ES
PR
IM AR
Y
RE
DU
ND
AN CO
T TX RS M M
23 2 UN
IC AT
RX BM IO NS
E
RE
D IA M O
G N TE
O S
T IC SY ST
S EM
ST
AT US
M A
T R
IX
6 4
0 0
V ID
E O
POWER SUPPLIES
+ V - V
PRIMARY TX
REDUNDANT RX
DIAGNOSTICS
AC POWER INPUT
FUSE: 250V 0.8A TT
H 1
Primary V-
Power Supply
(Redundant V-
would be located
beside Primary
V-)
COMMUNICATIONS
SYSTEM
STATUS
RS232 BME REMOTE
5-6