5 :
O p e r a t i o n ( A c t i v e M o d e l s )
Figs 6 and 7
illustrate the connection and control panel for the
amplifiers used in the active SCM40A and 19A monitors.
Each feature is described below:
Mains Inlet:
The supplied mains power lead (appropriate to
the local territory) should be connected here. Ensure that the
mains voltage specified on the panel corresponds with the local
supply voltage.
Power Switch:
Switches on the monitor.
Fuseholder:
Should a monitor fail to switch on when the
power switch is operated, the fuse should be inspected. Lift out
the fuseholder cover using a flat-blade screwdriver, remove the
fuse and inspect it for damage. If required, a replacement should
be fitted. It should be stressed however, that fuses often fail
because of a serious electrical fault. If this is the case, then simply
replacing the fuse will only result in another fuse failure. The
monitor should be returned to ATC if a second fuse fails.
Input Socket:
The audio signal cable should be connected
here. Balanced or unbalanced cables may be used (see Section 4.)
Fault LED (SCM19A and SCM40A only):
The fault LED
will illuminate if there is a fault in the Amplifier or the heat sink
temperature is too high for safety or reliability. There will be no
output from the Loudspeaker if the LED is on. Turn the Amplifier
off at the mains, remove the Input connector, wait approximately
10 seconds and then turn the Amplifier back on again. if the LED
is still on, leave the Amplifier to cool for 30 minutes and repeat
the above procedure. If after this time the LED still comes on
then contact ATC for advice.
ENTRY MANUAL 040919_ENTRY BROCHURE 13.3 10/09/2019 15:19 Page 10