Chapter 2: Mps-488Hp Front And Rear Panels; Mps-488Hp Front Panel - Meyer Sound MPS-488HP Operating Instructions Manual

CHAPTER 2: MPS-488HP FRONT AND REAR PANELS

MPS-488HP FRONT PANEL

The MPS-488HP front panel includes a power switch and
LEDs for monitoring each loudspeaker channel.
MPS-488HP Power Supply Front Panel
AC Power
The MPS-488HP is powered on and off with the AC Power
switch.
Voltage and Load Current LEDs (1–8)
The Voltage and Load Current LEDs are useful for verifying
whether each channel output has voltage and whether the
connected loudspeakers are receiving DC power and audio.
MPS-488HP Channel LEDs
Blue Voltage LEDs (1–8)
The blue Voltage LEDs indicate whether voltage is present
for the channel outputs. These LEDs should be lit when the
MPS-488HP is powered on. The MPS-488HP's intelligent
circuit protection shields connected loudspeakers from
surges and shorts. When a blue Voltage LED is unlit and its
corresponding green Load Current LED is flashing, a surge
or short has been detected for the channel. If a surge or
short is encountered, power down the MPS-488HP and
inspect the loudspeaker cabling for that channel.
Table 1 lists the possible states for the Voltage LEDs.
Table 1: Voltage LEDs
State Cause
Unlit MPS-488HP not pow-
(all LEDs) ered on
Unlit Surge or short encoun-
(single LED) tered for channel (corre-
sponding Load Current
LED flashes)
Flashing Internal failure encoun-
(all LEDs) tered
Flashing Residual voltage
(single LED) detected for channel
CAUTION: When a blue Voltage LED is unlit and
its corresponding green Load Current LED is
flashing, indicating a surge or short for the channel,
power down the MPS-488HP and inspect the loud-
speaker cabling for that channel.
Recommended Action
Verify the MPS-488HP is
powered on and verify its
power source
Power down the
MPS-488HP and inspect
the loudspeaker cabling
for the channel
Service required. Power
down and disconnect the
MPS-488HP, then con-
tact Meyer Sound
Unplug and plug the
channel's loudspeaker
cable; if the problem per-
sists, verify the loud-
speaker cabling
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