Lab.gruppen PLM 20K44 Operation Manual page 70

9. Appendix
Category/Type
Warning
Warning
Warning
Fault
Fault
Fault
AMP
Warning
Fault
Fault
Fault
Warning
Clip
Clip
Clip
Clip
SIGNAL
Fault
Clip
Table 9.1: Warning, Fault and Mute Indications (alphabetical by LCD Text / Event Log Text)
70
PLM+ SERIES Operation Manual rev 3.0.1
Name On screen text
More speakers OVR SPKR COUNT
Uncertain about load UNCERTAIN LOAD
LOAD NOT VER
No load
Wrong load
Short circuit SHORT CIRCUIT
channel
Service channel
Very high frequency fault
VHF WARNING
Very high frequency warning
(PLM20K/12K44 only)
Current average limiter
Current clip CURRENT CLIP
Voltage clip
Module clip
No input source
Analog/AES input clip
Description
LoadSmart detected more speakers
than expected
LoadSmart uncertain about load
At least one LoadPilot tone above
NO LOAD
above thresholds
LoadSmart detected impedance
WRONG LOAD
response output model
LoadPilot or full frequency analysis
below short threshold or hardware
short protection
TEMP WARN
critical temperature
TEMP FAULT
internal protection limit
SERVICE CH.
VHF FAULT
Amplifier channel gain
reduction due to VHF content
CAL ACTIVE
above safe operating level
VOLTAGE CLIP
MOD. CLIP Module output signal clipped
Input router has no valid
NO INPUT
The signal on the analog/AES input
INPUT CLIP
is above inputs capability
Check load and
Check load and
Perform LoadSmart
Check load or calibration
Check load and
Check load and cabling
Improve cooling or reduce
output power to avoid
temperature becoming
Automatically unmutes
when cooled down
Restart device; if not
cleared it needs service
Check input signal or
reduce output. With a
maximum of -12 dB of gain
reduction in the VHF
warning, VHF Fault will
trigger after
15 seconds
Check input signal
Reduce output power
to avoid limiting
Reduce output power
current limit to avoid limiting
Reduce output power
to avoid limiting
Review gain structure.
Module gain vs AmpGain
Review input router
input source settings/connections
Lower the signal on the
Action
critical