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JBL MBB2020 Troubleshooting Manual
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JBL MBB2020 Troubleshooting Manual

JBL MBB2020 Troubleshooting Manual

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Download this manual See also: Operating Manual
JBL MBB2020 Troubleshooting Guide
Prospec Electronics
Note: Please click on highlighted words for links to this page and our website.
1
Wiring
2
Compatible Accessories
3
List of common issues
3.1. No power
3.2. Intermittent Power
3.3. Buttons/controls not responding/erratic controls
3.4. USB issues
3.5. Poor reception or no reception
3.6. No audio, speaker audio is unevenly distributed or some speakers not working
3.7. Low audio
3.8. Fluctuating Audio
3.9 Audio Shoots up when Bluetooth is on
3.10 Moisture in Display
3.11 Bluetooth Won't Work
4
External Amplifier Issues/Subwoofer Operation
5
Reset Procedure

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Summary of Contents for JBL MBB2020

  • Page 1 JBL MBB2020 Troubleshooting Guide Prospec Electronics Note: Please click on highlighted words for links to this page and our website. Wiring Compatible Accessories List of common issues 3.1. No power 3.2. Intermittent Power 3.3. Buttons/controls not responding/erratic controls 3.4. USB issues 3.5.
  • Page 2 IC. • Antenna must be installed. 2.0 Compatible Accessories: See our website for the following add on accessories  SEAMINI2  SEAUSBMINI  JBL MC-20  MIL REM-50  MIL-RF9  Any antenna  Any amplifier ...
  • Page 3 3.3 Buttons/controls not responding/erratic controls • Check each button on the control pad for sticking. Under normal conditions, a faint click is heard upon pressing each button. If any button does not click, initiate a warranty claim if you are under warranty. •...
  • Page 4 3.5 Poor or no Reception 3.5.1 For an amplified antenna  Ensure the antenna is connected to power and ground according to manufacturer’s instructions  The antenna wire should never be coiled or wound up.  Check proximity of radio, speakers and antenna to gages, GPS equipment, depth finders, LED lighting or any other source of Radio Frequency Interference (RFI) and Electronic Magnetic Interference (EMI).
  • Page 5 Make sure your Bluetooth device is turned on and set to scan  Make sure the MBB2020 is on BT MUSIC. Hold down the MOD button until PAIRING appears  Turn all other Bluetooth devices off so the radio doesn’t get confused with what Bluetooth device to pair to.
  • Page 6 4 External Amplifier Issues/Subwoofer Operation 4.2 Strong hiss – reduce the input gain on the amplifier until the hiss is reduced to an acceptable level while still maintaining performance. Note, if both amplifier and stereo output can produce distortion, the input gain is much higher than it needs to be.