Figure 4.1 Front Panel Indicators and Grille; 4.2 Controls, Indicators and Connectors; 4.2.1 Front Panel Facilities- Page 11

Micro-Tech Series

 Power Amplifiers

page 11

Operation Manual

4.2  Controls, Indicators and
Connectors

4.2.1 Front Panel Facilities

A. Filter Grille

Supports and protects the dust filter (B). To 
clean the dust filter, detach the grille by remov-
ing the three screws that hold it in place.

B. Dust Filter

Removes large particles from the air drawn by 
the cooling fan.  Check the filter regularly to 
prevent clogging. The filter can be cleaned by 
soaking in a mild detergent (e.g. dishwashing 
liquid).

C.  ODEP Indicators (Output Device 
Emulation Protection)

During normal operation, these amber indica-
tors glow brightly to show that reserve thermo-
dynamic energy is present. They dim 
proportionally as energy reserves decrease. In 
the rare event that energy reserves are depleted, 
the ODEP indicators turn off and the protection 
circuitry proportionally limits output drive so 
the amplifier can safely continue operating even 
under extreme conditions. These indicators 
also help identify more unusual operating 
conditions (see Section 5.1.1 on ODEP and 
Section 7 on Troubleshooting).

D. Enable Indicator

Lights when the amplifier is on. AC power is 
available and the low-voltage power supply and 
fan are operational. Does not indicate the status 
of the high-voltage power supply (see Section 
6 on Troubleshooting).

E. Power Switch

Amplifier is on when the switch is in the "on" 
position. When turned on, the output is muted 
for approximately four seconds to protect your 
system from start-up transients.

ODEP

CH1

CH2

POWER

OFF

A

B

C

C

D

E

Figure 4.1 Front Panel  Indicators  and Grille

4 Operation