Instruction/ maintenance manual of the product P-4040 JBL
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Power Series Amplifiers P-4020, P-4040 Owner ’ s Manual GENUINE JBL P-4020/4040 OM. 7/14/98 11:42 AM Page 1.
2 Amplifier Featur es • 4-, 3- or 2-c hannel operation (P -4040) 2- or 1 -channel operation (P -4020) • Simultaneous stereo and mono operation • Built-in 12dB/oct electronic crossover • Balanc.
3 • Always wear protective eyewear when using tools. • When routing cables, keep input signal cables away from power cables and speaker wires. • When making connections, make sure that eac h connection is clean, insulated and properly secured. Observe the polarity markings on the rear panel.
4 Mounting the Amplifier The JBL P -4020 (or P -4040) can be mounted in virtually an y location inside the vehicle. However , make sure to k eep the amplifier away from heater vents or ducts. 1 . At the c hosen site, use the amplifier as a mounting template and mark the locations of the four mounting holes.
5 4. In some systems it may be desirable to have two sources play simultane- ously through the audio system. For instance, if you have a factory-installed radio in your car and you want to add an aftermarket CD player , you may connect the CD player to the RCA inputs of the amp and the factory radio to the Universal Interface speak er inputs.
FUSE 30A BRIDGE – R + – L + MADE IN THE U.S.A. + BATT REM GND BRIDGE SPEAKER OUTPUTS POWER FRONT REAR 30 6 20 – R + – L ++ BATT REM GND BRIDGE SPEAKER OUTPUTS POWER FUSE 20A MADE IN THE U.S.A. FUSE 30A BRIDGE – R + – L + MADE IN THE U.S.A.
7 Symptom Likely Cause Solution No audio Low/no remote on voltage Chec k connections; turn-test turn-on voltage Speakers are not connected or are blown Chec k wiring; use VOM/D VM to measure speaker -.
JBL Consumer P roducts 250 Cross ways P ark Drive Woodbury , NY 1 1 797 Part No. SH1 1 22 Made in USA Specifications JBL P -4020 JBL P -4040 Power Output, 4 ohms: 2 x 40 wat ts 4 x 40 wat ts Power Out.
An important point after buying a device JBL P-4040 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought JBL P-4040 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data JBL P-4040 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, JBL P-4040 you will learn all the available features of the product, as well as information on its operation. The information that you get JBL P-4040 will certainly help you make a decision on the purchase.
If you already are a holder of JBL P-4040, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime JBL P-4040.
However, one of the most important roles played by the user manual is to help in solving problems with JBL P-4040. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device JBL P-4040 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
