97-7796264_09-04-2020
Information subject to change
21
7548/7794/7796/7796HC OPERATOR’S MANUAL – SECTION 4
4.4
Adjusting the Bi-Level Power
Supply Switch
The amplifier offers three Bi-Level switch settings:
Automatic, High, or Low. The user can select
between settings via a switch on the Power Sup
-
ply Board. The Power Supply Board is a horizontal
board located below the main and display boards.
To access the Bi-Level Power Supply Switch, com
-
plete the following steps to remove the front panel
and access the bi-level power supply switch.
IMPORTANT:
Before removing the Front Panel,
make sure the amplifier is turned off for at least 3-5
minutes and the AC mains are disconnected.
1.
Turn the power to the amplifier “OFF”.
2.
Remove the four hex-head screws, located
along the left and right edges of the amplifier
front panel using a Torx T15 driver.
3.
Remove the front cover by pulling straight
towards you.
4.
Locate the Bi-level Power Supply Switch as
shown in
Figure 4.7.
5. Adjust the switch setting based on your op-
erating requirements, as described below:
•
AUTO
(left position) – power supply will switch
depending on voltage requirements (factory-
default setting).
•
LOCKED LOW
(center position) – power sup
-
ply will remain in low-voltage mode.
•
LOCKED HIGH
(right position) – power supply
will remain in high-voltage mode.
Figure 4.7 – Bi-Level Power Switch Location
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