Kenwood DPX-4020MH4 User Manual - Page 33

Troubleshooting Guide What might seem to be a malfunction in your unit may just be the result of slight misoperation or miswiring. Before calling service, first check the following table for possible problems. PROBLEM The power does not turn on. No sound can be heard, or the volume is low. The tape does not go in. / No sound can be heard even though the tape display is made. Nothing happens when the buttons are pressed. The sound quality is poor or distorted. Radio reception is poor. The memory is erased when the ignition is turned off. A CD ejects as soon as it is loaded. The sound skips on a CD. POSSIBLE CAUSE The fuse has blown. Attenuator is turned on. The fader or balance settings are set all the way to one side. The input/output wires or wiring harness are connected incorrectly. The cassette tape is bad. The car ignition was turned off during tape eject; or the tape was pulled out during loading, switching the mode to tape mode even though no tape is in. SOLUTION After checking for short circuits in the wires, replace the fuse with one with the same rating. Turn off Attenuator. Reset the fader or balance settings. Reconnect the input/output wires or the wiring harness correctly. See the section on "Connections". Try playing another cassette tape. If works fine, the first tape was bad. Press the Eject button. The computer chip in the unit is not functioning normally. Press the reset button on the unit (see p. 4). The tape head is dirty. One of the speaker wires is being pinched by a screw in the car. The speakers are not wired correctly. The car antenna is not extended. The antenna control wire is not connected. The battery wire has not been connected to the proper terminal. The ignition and battery wire are incorrectly connected. The CD is upside-down. The CD is quite dirty. The CD is scratched or dirty. Clean the tape head, referring to the section on "Cleaning the tape head" (see p. 4). Check the speaker wiring. Reconnect the speaker wires so that each output terminal is connected to a different speaker. Pull the antenna out all the way. Connect the wire correctly, referring to the section on "Connections". Connect the wire correctly, referring to the section on "Connections". Connect the wire correctly, referring to the section on "Connections". Load the CD with the labeled side up. Clean the CD, referring to the section on "Cleaning CDs" (see p. 5). Clean the CD, referring to the section on "Cleaning CDs" (see p. 5). - 33 -