A302GTi - JBL Car Audio User Guide / Operation Manual. Page 7

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07
PRO POWER
TM
Troubleshooting 
Symptom
Likely Cause
Solution
No audio 
Short circuit in speaker
Disconnect speaker leads one at a time to  
(Red LED flashes every 
or speaker wire.
determine which speaker or wire is shorted
four seconds)
or defective. Repair the short circuit or 
replace bad speaker.
No audio 
No voltage at BATT or REM terminals.
Check voltage at amplifier terminals
(Power indicator is off)
Bad or no ground connection.
with VOM.
No audio
Amplifier overheated.
Make sure amplifier cooling isn’t prevented
(Green power LED is lit)
by mounting location.
Make sure speaker-system impedance is 
within limit (see Specifications).
No audio
Excessive voltage on B (+) connection.
Check vehicle charging system for defective 
(Red LED stays lit) 
voltage regulator.
Distorted audio
Input sensitivity not set properly; 
Check LEVEL setting.
amplifier or source unit defective.
Music lacks “punch”
Speakers are not connected properly.
Check speaker connections for proper polarity.
Status monitor fails 
No power to meter, or 
Check connections to monitor and amplifier. 
to turn on
cable disconnected.
Check power on red and green wires, 
ground on black wire.
Status monitor displays
Status monitor programmed incorrectly.
Reprogram status monitor.
erroneous readings
Remote level control 
Cable disconnected or 
Check connections to level control; 
doesn’t work or has 
amp level set too low.
set amp level control higher.
small range of adjustment
Declaration of Conformity
We, Harman Consumer International
2, route de Tours 
72500 Chateau-du-Loir
FRANCE
declare in own responsibility, that the products
described in this owner’s manual are in compli-
ance with technical standards:
EN 55013/A12/8.1994
EN 55020/12.1994
Lutz Uphoff
Harman Consumer International
Chateau-du-Loir, FRANCE. 10/00
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