Thank you for your shop manual! Your help was very useful - the device is repaired! Once again - Thank you! I wish you a successful business! Edward (Russia).
Text excerpt from page 8 (click to view)
TROUBLESHOOTING
PROBLEM POWER LED not lit. CAUSES AND SOLUTIONS 1. Fuse is blown and needs replacement. 2. Head unit not functioning properly. 3. Check remote turn-on, power and ground connections. 1. Inputs are not connected. Check connections. 2. Head-unit fader controls are not set properly. Adjust head-unit controls to feed audio signals to BassPro. 3. Incorrect GAIN control setting. 1. GAIN is set too high. 2. Bass level is set too high on head unit. 3. Head unit output is distorted or blown. See your authorized JBL car audio dealer. Using speaker-level connection: one of the speaker connections is reversed (+/�). Reverse one channel. Speaker-level connections have a fiveminute turn-off delay. Check the unit at a later time.
POWER LED is lit but there is no bass.
Output sounds muddy or distorted.
Output gets louder when the head-unit balance is adjusted to L or R. POWER LED remains ON after system is turned off.
