REPAIRING AND NOT THROWING AWAY

REPAIRING AND NOT THROWING AWAY

Richtige Fernseher haben Röhren!

Richtige Fernseher haben Röhren!

In Brief: On this site you will find pictures and technical information about Service Modes, Circuit Diagrams, Firmware Update procedure, Disassemble procedure, Universal remote control set-up codes, Troubleshooting and more....

If you go into the profession, you will obtain or have access to a variety of tech tips databases HERE IT IS Master Electronics Repair !.

These are an excellent investment where the saying: 'time-is-money' rules. However, to learn, you need to develop a general troubleshooting approach - a logical, methodical, method of narrowing down the problem. A tech tip database might suggest: 'Replace C536' for a particular symptom. This is good advice for a specific problem on one model. However, what you really want to understand is why C536 was the cause and how to pinpoint the culprit in general even if you don't have a service manual or schematic and your tech tip database doesn't have an entry for your sick TV or VCR.

While schematics are nice, you won't always have them or be able to justify the purchase for a one-of repair. Therefore, in many cases, some reverse engineering will be necessary. The time will be well spent since even if you don't see another instance of the same model in your entire lifetime, you will have learned something in the process that can be applied to other equipment problems.
As always, when you get stuck, checking out a tech-tips database may quickly identify your problem and solution.In that case, you can greatly simplify your troubleshooting or at least confirm a diagnosis before ordering parts.

Happy repairing!
Today, the West is headed for the abyss. For the ultimate fate of our disposable society is for that society itself to be disposed of. And this will happen sooner, rather than later.

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..............The bitterness of poor quality is remembered long after the sweetness of todays funny gadgets low price has faded from memory........ . . . . . .....
Don't forget the past, the end of the world is upon us! Pretty soon it will all turn to dust!

©2010, 2011, 2012, 2013, 2014 Frank Sharp - You do not have permission to copy photos and words from this blog, and any content may be never used it for auctions or commercial purposes, however feel free to post anything you see here with a courtesy link back, btw a link to the original post here , is mandatory.
All posts are presented here for informative, historical and educative purposes as applicable within fair use. NOTHING HERE IS FOR SALE !

Wednesday 20 March 2019

JBL GTO-5EZ - POWER AMPLIFIER - SCHEMATICS & CONNECTIONS

JBL GTO-5EZ - POWER AMPLIFIER - SCHEMATICS & CONNECTIONS


POWER CONNECTION:
  • Connect a wire (minimum 6AWG – 13.2mm2– for the GTO-5EZ; minimum 8AWG – 8.4mm2– for the GTO-3EZ) directly to the battery’s positive (+) terminal.
  • Install a fuse holder for a 90A fuse (GTO-5EZ) or 70A fuse (GTO-3EZ) on this wire within 18" (46cm) of the battery’s (+) terminal. Do not install the fuse in the holder at this time.
  • Route this wire to the amplifier’s location and connect it to the amplifier’s +12V terminal. Be sure to use appropriate grommets whenever routing wires through the firewall or other sheet metal.IMPORTANT: Failure to adequately protect the positive wire from potential damage may result in a vehicle fire.
  • When you are finished routing and connecting this wire, install the appropriate fuse in the holder you installed near the battery. (GTO-5EZ = 90A fuse; GTO-3EZ = 70A fuse.)
SPEAKER CONNECTION
  • Always connect the (+) terminal on the amplifier to the (+) terminal on the speaker and the (–) terminal on the amplifier to the (–) terminal on the speaker.
IMPORTANT: Make sure the (+) and (–) bare wires do not touch each other or the other terminal at both the amplifier terminals and speaker terminals. Touching wires can cause a short circuit that can damage the amplifier.
NOTE:The minimum speaker impedance for stereo operation is 2 ohms. The minimum speaker impedance for bridged operation is 4 ohms. The minimum sub-woofer impedance is 2 ohms.
STEREO OPERATION
  • Connect the front speakers to the Front L (FL) and Front R (FR) (+) and (–) terminals.
  • GTO-5EZ only: Connect the rear speakers, using the RL and RR (+) and (–) terminals.
  • Connect the subwoofer to the Sub (+) and (–) terminals.
GTO-5EZ bridged operation (high-power for front speakers)
  • Connect the left speaker to the FL (+) and FR (–) terminals
  • Connect the right speaker to the RL (+) and RR (–) terminals.
  • Connect the subwoofer to the Sub (+) and (–) terminals.
NOTE: You can also run one pair of left and right channels in stereo and the other pair of left and right channels bridged for a 3.1-channel system.
GTO-3EZ Bridged operation (center channel and subwoofer operation in a multi channel system)
  • Connect one speaker to the L (+) and R (–) terminals.
  • Connect the subwoofer to the Sub (+) and (–) terminals.
SCHEMATICS
Power Supply
Input
Auto-On
AMPLIFIERS
PCB
Posted By: FRANK at 02:39
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