iPAM400 – Product Manual
U-0629-0171.doc – Issue: 04 complete, approved
Page 94 of 138
Table 3 Amplifier module indicators
Amplifier Module Indicators
Indicator Indication
supply
Indicates that power is present at the amplifier.
Fault indication: OFF
Operational fault symptom:
Loss of all loudspeaker circuit functionality on a single amplifier output.
Suggested actions:
1. Check fuse on iPAM400 amplifier motherboard; see Section “8.13.2 iPAM400 Internal Fuses” (page 112).
2. Check fuse on amplifier module; see Section “8.13.3 MX Amplifier Module Internal Fuses” (page 113).
3. Replace amplifier module; see Section “8.10 Amplifier Module Replacement” (page 107).
select
Illuminates to indicate that the amplifier is selected for audio monitoring by the system. In the case of a standby amplifier it illuminates to indicate that the
standby is in use.
Fault indication: steady ON (an amplifier module fault has been detected)
Operational fault symptom:
Loss of all loudspeaker circuit functionality on all outputs of faulty amplifier.
Suggested action:
Replace amplifier module; see Section “8.10 Amplifier Module Replacement” (page 107).
fault
Fault indication: flashing (a loudspeaker line fault has been detected on circuit A or/and B)
Operational fault symptom:
Partial or total loss of all loudspeaker circuit functionality.
Suggested actions:
1. Check speaker wiring and loudspeakers.
2. Check AEL01/AEL02 Active End of Line Device if used. Replace if unit is faulty. Refer to AEL01/AEL02 user documentation; see Table 7 (page 132).
3. Replace amplifier module; see Section “8.10 Amplifier Module Replacement” (page 107).
0 dB Illuminates at approx. 90 V RMS output.
−20 dB
Illuminates at approx. 10 V RMS output.
−40 dB
Illuminates at approx. 1 V RMS output.
Table 4 Rear panel audio In/RS485 port indicators
RS485 Port Status Indicators
Indicator Indication
RX RS485 receiving.
TX RS485 transmitting.
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