NOTE
Unplugging J2 on the Slave Controller removes external inter-
lock control of the PA cabinet.
c. Turn on the AC power to the cabinet.
d. Turn on CB1 located behind the lower left panel. Check
for 5 volts at U15 pin 14 on the slave controller board. (U15
is in the middle of the front row.)
e. Press cabinet ON. You should hear the contactor energize.
Air loss, PS-1, and PS-2 LEDs should be on (PS-2 may not
be used). Press cabinet OFF.
f. Turn on CB2, located behind the lower right panel. Press
the cabinet on switch on the slave controller. Check for
proper blower rotation. The negative pressure at the ex-
haust may be measured by placing a small sample hole in
the exhaust ducting system directly above the transmitter,
or by temporarily disconnecting the air pressure switch,
S2, and connecting the measuring device at this point. See
Figure 5-2 for the air switch location. The positive pressure
inside the cabinet may be measured by temporarily remov-
ing a mounting screw from one of the cover plates on the
top rear of the cabinet. (The fan blows air into the cabinet.)
The air loss LED should go out, and the PS LEDs will go
out as the 50 volt power supplies come on. (If the air loss
LED remains on, insert the amplifier modules most of the
way into the cabinet to provide more back pressure, with-
out engaging the connectors yet, and try again.)
g. Check air switch operation by momentarily shutting off
CB2.
h. Check door interlock operation by opening the rear door
while cabinet is running. The PA should turn off as soon
as the door begins to open, and an External Interlock fault
should appear on the front of the Slave Controller card.
When the door is shut and latched again the PA should
come back on.
WARNING
THE DOOR SHOULD BE HELD OPEN FOR 15-20 SECONDS TO
ENSURE THE FULL DISCHARGE OF THE POWER SUPPLY CA-
PACITANCE. IF THE DOOR IS SHUT BEFORE THE CAPACITORS
DISCHARGE, THE POWER SUPPLY MAY BE HELD OFF AND MAY
FAIL TO RE-START.
i. Check the 50 volt supplies. Measure the voltage at pin 3 or
4 of a module connector from the front of the cabinet. (PS-1
powers the right column, and PS-2 the left.)
j. Turn off cabinet and both breakers. Reconnect cable at J2
and proceed to next cabinet.
2.12.3
Module Installation
The modules may now be installed. Refer to factory test data for
placement of modules by serial number and slot number. There
are only two types of modules, DRIVERS and PAs. The drivers
are keyed and will not fit into a PA slot. Although each type is
interchangeable from aural to visual and will work in any like
socket, when starting out it is best to reassemble them in the same
locations as tested. Keep a record of any changes for future
reference.
Make sure each module is completely seated.
CAUTION
DO NOT USE EXCESSIVE FORCE OR SLAM MODULES INTO THE
SLOTS.
2.12.4
Control System Check Out
a. Apply power to all cabinets and peripherals.
b. Turn on all cabinet breakers.
c. Check the CABINET SELECT LED on each slave con-
troller. For systems with single PA cabinets, the LED
should illuminate continuously. For multiple-cabinet sys-
tems (20kW and up), the LEDs should be flashing.
d. Momentarily switch off each PA cabinet logic breaker CB1
and look for CONTROL FAULT lamp on the control
cabinet while the breaker is off. After switching all PA
logic breakers, check the alarms queue for SLAVE
FAULTS. (From the Bar Graph screen, press ALARM.)
Alarms are received and stored in memory while viewing
the alarms screen, but the display is not updated until you
leave the alarms page. DELETE the alarms and press EXIT
after each test before preceding the next event.
e. Depress and hold power LOWER controls for 15 seconds
each to ensure that exciters are turned all the way down.
f. Press transmitter ON pushbutton.
g. Check air system for proper operation. There should be
slight negative air pressure above transmitter, and positive
pressure inside the cabinets of approximately 0.7 inches
H
2
0 column.
h. Check that all modules are enabled. Drivers will show a
full green LED. PA modules will illuminate half of the
green LED. It is normal for the red module LEDs to come
on momentarily as the transmitter 50 volt supplies come
up to voltage at turn on. They also will come on at shut-
down, gradually fading out as the supplies discharge.
i. Open each PA cabinet rear door momentarily. The cabinet
should shut down, then re-start a few seconds after the door
is closed. Check for DOOR INTERLOCK lamp at control
cabinet while the door is open, and check for DOOR OPEN
in alarms queue on the display panel.
j. Similarly, check AIR LOSS lamps and AIR FAULT
ALARMS by momentarily shutting off each cabinet fan
breaker CB2.
k. Check MODULE FAULT status for each module. Check
to see that all modules are enabled (green LED on); press
transmitter ON to enable any modules that are not already
on.
l. Squeeze the disable switch in the handle of the first mod-
ule. The module LEDs should go out. You should see the
MODULE FAULT lamp on at the control cabinet, and a
module fault in the alarms queue. Re-enable the module
by pressing transmitter ON at the control cabinet. The
MODULE FAULT lamp on the control cabinet should go
out. DELETE the alarm from the queue. Repeat for each
module in turn.
2-8
888-2365-001
Rev. C: 8-24-2000
WARNING: Disconnect primary power prior to servicing.
Summary of Contents for Platinum Series
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