Ampeg B500DR - Manual (Page 7)

7
Troubleshooting
In the unlikely event that your B500DR should malfunction, take a few minutes to troubleshoot it before you call for
service. You can save yourself time and money by doing it yourself, and often the problem is something quite simple.
Presets:
The B500DR has four presets which may be selected by the front panel Presets switches (#11) or by the AFP4D four
button footswitch. When the B500DR is powered up, it defaults to Preset 1 - the controls will reset themselves to that Preset
and the LEDs will change accordingly to indicate Preset 1’s settings. The LED adjacent to the Preset 1 switch illuminates
accordingly. When a footswitch is used, the LED adjacent to the footswitch pushbutton illuminates brighter than the other
three LEDs - a feature performing musicians will find very useful when playing in darkened venues.
Programming the B500DR:
To program one of your settings into one of the presets, adjust the front panel controls to the desired setting. Depress
and hold the desired Preset switch (1 through 4) until the LEDs adjacent to the Preset switches flash. Your new setting is
now stored as a preset. The LEDs will stop flashing after approximately 1-2 seconds. The LED adjacent to the programmed
Preset switch will remain illuminated.
When you manually change the position of one of the controls, the LEDs around the affected control flashes to show
that the setting has been changed. The LEDs stop flashing when you either program the new setting into a Preset, select
a different Preset, or return the control to its original position for the selected Preset.
The front panel Preset switches and the footswitch may be used concurrently. The LEDs on the front panel and on
the footswitch indicate which Preset is active regardless of how the Preset was selected (by the front panel switches or by
the footswitch).
If the problem isn’t covered above, or if the steps lead you here, then contact your Ampeg dealer for service informa-
tion. Also, you should refer your amp to an authorized service center if it gets dropped, has liquid spilled into it, or sustains
damage to its power cord.
NO SOUND
LEDs LIGHT
POOR SOUND
Check bass, cables
Check speaker(s)
Replace speaker(s)
POOR SOUND
LEDs DON'T LIGHT
Check AC outlet
NO SOUND
NO HUM HUM
Listen for hum
NO CHANGE
SOUND OK
SOUND OK
POOR SOUND SOUND OK
SOUND OK
Check amp controls, check
for signal from bass
Check power cord,
fuse, power switch Check house fusebox
or circuit breaker SPEAKER(S) OK,
POOR SOUND SPEAKER(S)
DEFECTIVE
Check speaker Unplug bass,
touch tip of cable
Speaker OK
Replace cable
NO CHANGE
SEE BELOW SEE BELOW
NO POWER OUTLET OK
OK
B500DR Programmable Bass Amplifier