Ampeg B5R - Manual (Page 7)

7
Troubleshooting
In the unlikely event that your B5R should malfunction, take a few minutes to troubleshoot it before you call for ser-
vice. You can save yourself time and money by doing it yourself, and often the problem is something quite simple.
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 (see page 2).
System Block Diagram
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
1+
2+
1–
2–
0dB
INPUT
PEAK
-15dB
INPUT
EFFECTS
SEND
BAL.
OUTS
EFFECTS
RETURN
VOLUME
GAIN
VOLUME
MASTER
OCTAVE
BOOST
CHANNEL MUTE COMBINE
STYLE
BASS ULTRA MID
TONE CIRCUITS
STYLE
TONE
FOOT
SWITCHES
PWR
AMP
OCTAVE
CIRCUIT
SWITCHING
CIRCUIT
FX
BLEND
TREBLE
PREAMP
OUT
SPEAKER
OUTS
PWR AMP
IN
LIMITER
B5R Bass Amplifier