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JBL MR140/145/145.2 Troubleshooting Guide
Prospec Electronics
Note: please click on highlighted words for links to parts of this document 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 or behaving erratically
3.4. Poor reception or no reception
3.5. No audio, speaker audio is unevenly distributed or some speakers not working
3.6. Low audio
3.7. Fluctuating Audio
3.8 Moisture in Display
3.9 CD Player won't work
4
External Amplifier Issues
5
Reset Procedure
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Summary of Contents for JBL MR145.2
- Page 1 JBL MR140/145/145.2 Troubleshooting Guide Prospec Electronics Note: please click on highlighted words for links to parts of this document and our website. Wiring Compatible Accessories List of common issues 3.1. No power 3.2. Intermittent Power 3.3. Buttons/controls not responding or behaving erratically 3.4.
- Page 2 1.0. Wiring: Follow the wiring diagram above. • The red ACC wire is designed as the trigger to turn the radio on. It recommended that this wire is connected to an on/off switch for purposes of lowering the current draw on the battery while the radio is not in use.
- Page 3 3.2 Intermittent Power 3.2.1 Powers on and off constantly • Check voltage under load. At least 11V must be maintained consistently to operate the radio normally. • If voltage cannot be maintained, load test the battery or power supply. • Check all connections for corrosion, looseness, or other condition that can produce a bad ground.
- Page 4 3.4 Poor or no Reception 3.4.1 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 5 Reset Procedure • Disconnect the 12 pin connector plug from the power and ground for 15 seconds. • MR145 and MR145.2 only: Hold down BD and MOD until the radio shuts off • Note: resetting the radio will sometimes fix erratic controls and frozen controls.
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