Basic Troubleshooting - Infinity BassLink 4sc Service Manual

Amplifier Expansion Module
T
ROUBLESHOOTING
• PROBLEM:
BassLink II and 4sc Power LEDs are not lit.
CAUSES and SOLUTIONS:
1. Poor or improper power connection. Check
power, ground and remote connections.
Check speaker level input for proper
connections (see No Output).
2. Blown or improperly installed fuse.
Check main battery fuse and replace
if necessary.
Check fuse on BassLink II and 4sc.
• PROBLEM:
4sc Power LED not lit but BassLink II
Power LED is.
CAUSES and SOLUTIONS:
1. Improper power connection between
BassLink 4sc and BassLink II. Check Power
Connector (see Installation, Figure 2).
2. Improper signal connection between
BassLink 4sc and BassLink II. Check gray
ribbon signal cable connection to the 4sc
(see Installation, Figure 2).
3. Blown or improperly installed BassLink 4sc
fuse. Check fuse and replace if necessary.
• PROBLEM:
BassLink 4sc Power LED lit but no sound from
one or all speakers.
CAUSES and SOLUTIONS:
1. Improper input signal connections. Check
all input connections on BassLink II and
source unit.
2. Damaged speaker wire or improper speaker
connections. Check speakers and wiring;
change if necessary.
3. Improper signal connections between
BassLink 4sc and BassLink II. Check gray
ribbon signal cable connection to 4sc
(see Installation, Figure 2).
• PROBLEM:
Music sounds distorted.
CAUSES and SOLUTIONS:
1. Gain levels are set too high or head unit
volume is too high. Reduce volume and/or
Gain Levels.
2. Tone Controls on head unit misadjusted.
Check controls and adjust as necessary.
• PROBLEM:
No output from BassLink 4sc and BassLink II.
CAUSES and SOLUTIONS:
Input connections are improperly wired. Verify
all connections (see Figures 4 and 5).
• PROBLEM:
No output from BassLink II when head-unit
fader control is set to front or rear (in a
4-channel connection).
CAUSE and SOLUTION:
Input connections are improperly wired.
Verify all connections (see Connections,
on page 3).
• PROBLEM:
BassLink II turns on before head unit is
completely on and produces a "thump"
sound.
CAUSE and SOLUTION:
For speaker-level connections, head unit is
producing a false turn-on signal. On BassLink II's
side panel, slide AUTO TURN ON to OFF. It will
be necessary to connect the Remote lead
to a switched ignition voltage source.
• PROBLEM:
BassLink II's BassLink 4sc POWER LED
remains on after head unit is turned off.
CAUSE and SOLUTION:
For speaker-level connections, this is normal
operation when AUTO TURN ON is set to ON.
BassLink II and BassLink 4sc will remain on for
another 5 to 10 minutes after sensing that audio
signals are not present before shutting down.
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BassLink 4sc