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28
System-Level Faults and Troubleshooting Procedures
FAULT
ISOLATION PROCEDURE
CORRECTIVE ACTION
IPS will not activate
via local controls.
Determine whether battery
voltage is less than 19 VDC.
Perform battery system faults and troubleshooting procedures. If
batteries do not attain and maintain 19 VDC, replace batteries.
Battery voltage is
less than 19 VDC.
Verify 120 VAC present.
Check the fuse on the battery
charger.
Supply 120 VAC service.
Replace the fuse.
IPS will not activate
via local controls.
PWR LED is on.
Observe all wiring and
connections.
Repair or replace broken cabling/wiring between modules. If wiring
or circuitry within a module appears damaged, contact
manufacturer’s service personnel.
IPS will produce
tones audible near
cabinet but fail to
produce tones at
designated sound
levels.
Check the tone generator
connector to the system driver
board, including the cable
leading to the ESC-864 case.
Check the power amplifier
cables and connections.
Inspect power amplifier fuses.
Observe speaker driver (i.e.,
wire) connections to terminal
strip on the system driver board.
Refit the tone generator connector. Check cable/wiring path
between tone generator connector and connection to ESC-864. If
damaged, have repaired or replaced.
Check cable/wiring path between power amplifier connections on
the power amplifier(s) and the associated connections on the system
driver board. If loosened on the power amplifier(s), make proper
connection. If loosened or damaged on the system driver board,
have manufacturer’s personnel repair or replace.
Replace fuse(s), as required.
Make proper connections. If damaged, have wires repaired or
replaced. If problem not resolved, refer to manual on speakers. If
speakers check out properly, contact manufacturer service
personnel.
All power amplifier
LEDs do not
illuminate during
signal activation.
Observe power amplifier fuse.
Observe power amplifier cables
and connections from each
power amplifier to the system
driver board.
Observe connections of speaker
drivers (wires) on terminal strip
of system driver board.
Replace fuses.
Make proper connections. If connections, cables/wires are damaged,
have repaired or replaced.
Make proper connections. If connections, cables/wires are damaged,
have repaired or replaced.
One-to-three power
amplifier channels
do not illuminate
during signal
activation.
Observe connections of speaker
drivers (wires) on terminal strip
of system driver board.
If connections are proper and not damaged, connect a pair of
speaker wires from an adjacent, working power amplifier channel
on the terminal strip into the apparently faulty power amplifier
channel on the terminal strip.
Press the SI TEST® pushbutton. If the power amplifier channel
LED illuminates, the power amplifier channel is functioning
properly. The speaker driver (wires) that was originally connected to
the power amplifier channel is apparently faulty.
Содержание IPS 400
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