Final System Checks.79; Troubleshooting.79 - Clarion APA4203 Operation & Installation Manual

OPERATION/INSTALLATION MANUAL
FINAL SYSTEM CHECKS
1. Start the engine and turn on the source unit. After a two-second delay,
slowly increase the volume control and listen to the audio. If you hear
any noise, static, distortion, or no sound at all, check the connections,
and also refer to Troubleshooting below. Depending on your system,
the levels may be quite loud even at low volume settings. Until you get
an "audio feel" of the system's power, use care when adjusting controls.
2. Vary the balance control from left to right and listen to the results. Bass
levels should not vary if the amplifier is configured using both L and R
audio inputs.
3. Increase the volume and verify that the amplifier reproduces audio
without distortion. If you hear distortion, check the connections and
verify that the amplifier gain and BASS EXTENDER controls are set
correctly. Another possibility is damaged (or under-powered) speakers.
Once again, refer to Troubleshooting for additional help.
TROUBLESHOOTING
Symptom
Cause Solution
No audio Low or no remote
turn-on voltage
Check REMOTE wiring
or add relay circuit if
source unit fuse continues
to blow
Blown amplifier fuse
Replace with new fast-
blow fuse (same rating)
Power wires
not connected
Check BATTERY and
GROUND wiring at
amplifier; check battery
connections
Speaker leads
shorted
Check speaker continuity
to ground; should not
show a common ground
Final System Checks/Troubleshooting ♦ 19