Error Messages
57
Appendix B
Error Messages
The table below lists all of the possible error/status messages that may be listed on the CEM3 display
followed by the probable cause and any possible corrective action to remedy the error.
If you have any problems resolving errors, or do not feel comfortable performing the corrective action,
contact ETC Technical Services (see
Help from ETC Technical Services
).
WARNING:
To avoid the possibility of electric shock, power must be turned OFF before
removing dimmer or control modules. Prior to any action that involves
removing any module, de-energize main feed to dimmer rack and follow
appropriate Lockout/Tagout procedures as described in NFPA Standard 70E.
It is important to note that electrical equipment such as dimmer racks can
present an arc flash safety hazard if improperly serviced. This is due to
available large short circuit currents on the feeders of the equipment. Any
work on energized equipment must comply with OSHA Electrical Safe
Working Practices.
Phase voltages inside the rack can be deadly, therefore only qualified
technicians should be allowed to remove modules and expose the inside of
the dimmer rack.
Message
Cause
Possible Corrective Action
CPU Temp High
The temperature detected at the
CEM3 has exceeded the limit set
under the Temp High Warn option in
[Setup]>Rack
Decrease ambient temperature, or adjust
temperature warning level. Ensure that fan is
functioning properly.
DMX Error Port A
The DMX signal on port A is corrupt or
invalid
Check DMX wiring and termination
DMX Error Port B
The DMX signal on port B is corrupt or
invalid
Check DMX wiring and termination
No DMX Port A
No DMX signal is detected on port A
Check DMX wiring, termination or transceiver
chip
No DMX Port B
No DMX signal is detected on port B
Check DMX wiring, termination or transceiver
chip
Frequency Error
The power frequency is out the
supported range of 47–63Hz
Check the incoming power supply to the rack.
Contact a qualified electrician.
Phase A Off
No power is detected on Phase A
Check the incoming power supply to the rack.
Contact a qualified electrician.
Phase B Off
No power is detected on Phase B
Check the incoming power supply to the rack.
Contact a qualified electrician.
Phase C Off
No power is detected on Phase C
Check the incoming power supply to the rack.
Contact a qualified electrician.
Phase A Volts
High
The power on phase A is above the
volts high warning level (in
[Setup]>Rack)
Check the incoming power supply to the rack.
Contact a qualified electrician.
