3-Series Room Media Controller
Crestron
RMC3
RMC3 Troubleshooting (Continued)
TROUBLE
POSSIBLE
CAUSE(S)
CORRECTIVE ACTION
System locks
up.
Problem may
be due to
various
causes.
Hold down
SW-R
button on
control system front panel
to bypass program and
communicate directly with
processor. Refer to
“Troubleshooting
Communications” in the
Crestron 3-Series Control
System Reference Guide
(Doc. 7150) at
for more details.
Device is not
wired
correctly.
Verify Cresnet wiring.
Cresnet device
does not
respond.
Improper
NET ID is
used.
Verify that device ID
matches NET ID in the
program.
Device loses
functionality due
to electrostatic
discharge.
Device is
improperly
grounded.
Check that all ground
connections have been
made properly.
A/V system
device does not
respond.
IRP2 or serial
port is not
placed
properly.
Verify placement of IRP2
(hold phosphor card under
IRP2 while pressing button)
and tighten serial cables.
Wrong
IR/serial port
is used.
Verify that proper IR or
serial port is defined.
Serial cable
is not wired
correctly.
Verify that serial cable is
wired correctly for RS-232,
422, 485.
28
Room Media Controller: RMC3
Operations & Installation Guide – DOC. 7558B
