Ampeg SVT1000 manual Troubleshooting, System Block Diagram

Page 7

SVT1000 Bass Amplifier

Troubleshooting

In the unlikely event that your SVT1000 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.

NO SOUND

 

 

LEDs LIGHT

 

 

 

 

LEDs DON'T LIGHT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Check amp controls, check

 

 

 

 

Check AC outlet

 

 

 

 

for signal from bass

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OUTLET OK

 

NO POWER

 

 

NO SOUND

 

 

SOUND OK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Check power cord,

 

Check house fusebox

Listen for hum

 

 

 

fuse, power switch

 

or circuit breaker

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NO HUM

HUM

OK

Check speaker

 

Unplug bass,

 

 

touch tip of cable

 

 

Speaker OK

NO CHANGE

SOUND OK

Replace cable

NO CHANGE

SEE BELOW

 

 

POOR SOUND

 

 

 

 

 

 

 

 

 

 

 

 

 

Check bass, cables

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

POOR SOUND

 

 

 

SOUND OK

 

 

 

 

 

 

 

 

 

 

Check speaker(s)

 

 

 

 

 

 

 

 

 

 

SPEAKER(S) OK,

 

SPEAKER(S)

 

 

POOR SOUND

 

DEFECTIVE

 

Replace speaker(s)

POOR SOUND SOUND OK

SEE BELOW

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. Regular cleaning and maintenance by your local Service Center will help extend the useful life of the amplifier.

System Block Diagram

0dB

INPUT

-15dB

INPUT

PEAK

LED

TUNER

OUT

MUTE

GAIN

TEXTURE

TONE CIRCUITS

BASS ULTRA MID TREBLE

EQ IN

9BAND GRAPHIC EQ

(X9)

STYLE

fLEVEL

(SLIDERS)

PRE

LINE

POST OUT

PRE/

POST

LEVEL

MASTER

EFFECTS

SEND

EFFECTS

MIX

 

LIMIT

 

 

LED

LIMIT

UNBAL

 

 

DEFEAT

LINE OUT

 

 

 

BAL

LINELIMITER OUT

GROUND

LIFT

SPKR

OUT

POWER

AMP

SPKR

OUT

POWER

AMP IN

PREAMP

OUT

 

1+

 

1–

2–

SPEAKON®

 

JACK

 

2+

 

 

1+

 

1–

2–

SPEAKON®

 

JACK

 

2+

 

 

 

EFFECTS

Speakon®

is a registered trademark of Neutrik AG.

7

 

 

 

 

RETURN

 

 

 

 

 

 

 

 

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Contents SVT1000 SVT1000 Bass Amplifier An Introduction to your new Ampeg SVT1000 Bass Amplifier FeaturesFront Panel Rear Panel Jazz Some Suggested SettingsSystem Block Diagram TroubleshootingPower Requirements Technical Specifications