Operating the VK-500
Turning the VK-500 On:
There are two power switches on the VK-500 front panel. The two channels can be turned
ON or OFF independently at any time. However, if any channel of the VK-500 was turned
OFF even for a short period of time, you should wait at least 30 seconds before turning it
back ON. This precaution will minimize the stress on internal components.
When you turn the unit ON, the VK-500 will automatically go through a gentle power-on
sequence. At the end of a 10 second delay the unit will unmute and become operational.
Fuse Protection:
Each channel of the VK-500 is protected by three fuses:
1. The main line fuses are located on the back panel. These fuses should be checked if
one of the front panel blue LED’s fails to light.
2. Two internal fuses are mounted on the amplifier circuit boards. These fuses have two
green LED’s associated with them. Both LED’s should be lit when unit is ON and operating
properly. Failure of either of these LED’s to light indicates that the corresponding fuse is
open.
CAUTION:
Make sure that the VK-500 is turned OFF and disconnected from the power line
before proceeding with checking or replacing fuses.
A blown fuse in the VK-500 is an indication of a serious problem. If a replacement fuse fails
as well, no further attempts at servicing the unit should be undertaken. Please contact the
factory for professional service.
