A400HLX, A600HLX |
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Troubleshooting |
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Problem | Possible Cause | Corrective Action | ||
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Amplifier does not operate | No power to +12V terminal | Repair wire or connections. | ||
(power LED not on) when |
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| Check connections to radio with test light. | |
vehicle and radio are on | No power to remote wire with | |||
| radio on |
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| Fuse blown | Check fuse. | ||
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Radio volume needs to be | Input level control adjusted too low | Adjust input level control. | ||
turned up too high for amp |
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to work |
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Radio volume is too sensitive | Input level control adjusted too high | Adjust input level control to lower setting. | ||
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Sound from only one speaker | Defective speaker | Replace speaker. | ||
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| Poor connections to speaker (wire) | Check connections. | ||
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| RCA input cable defective | Replace cable. | ||
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| Input level control adjusted too high | Adjust input level control. | ||
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Sound distorted | Speaker wires shorting together | Separate speaker wires and insulate. | ||
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Blows fuses | Power wires hooked up incorrectly | Check power wire connections. | ||
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| Speakers blown or defective | Check speakers. | ||
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Engine noise | Improper ground connections | Reroute RCA away from main power wires. | ||
(Ignition noise/static or | Ground loop(s) |
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Alternator whine) |
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| Reroute RCA cable. |
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| Make sure amp is grounded to a clean, solid part of |
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| the chassis/frame. |
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Protect light comes on/ | Amp is in thermal protection | Let amp cool down before attempting to turn back on | ||
amplifier shuts down |
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| (some installations may require a fan to keep the amp |
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| cool, especially if you are driving subwoofers with the |
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| amp). |
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| Faulty speaker connection and/or | Check speakers and/or crossovers for loose or bad | ||
| crossover | connections. | ||
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| Low battery voltage | Make sure you are getting between | ||
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| amplifier with a digital multimeter measured at the amplifier. |
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| Speaker impedance less than 2 ohms | If you are using 4 ohm speakers you cannot have more | ||
| per channel | than two speakers wired in parallel per channel. | ||
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| Amp will not operate into 2 ohms bridged. |
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No output on channels | Speaker wires not connected to | Refer to pages 6 – 9 for proper installation. | ||
| speakers properly |
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| Input hooked up incorrectly |
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REC002_A4n600HLX_E | 13 | 1/9/02, 4:13 PM |