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!

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All posts are presented here for informative, historical and educative purposes as applicable within fair use. NOTHING HERE IS FOR SALE !

Monday 4 February 2019

JBL CINEMA SB400 POWERED SOUND BAR WITH POWERED WIRELESS 8” SUBWOOFER CIRCUIT DIAGRAM

Jbl CINEMA SB400 Powered sound bar with powered wireless 8” Subwoofer Circuit diagram

Midrange transducers: Two 2-1/4" (57mm) cones per channel
High-frequency transducer: One 1" (25mm) dome per channel
Amplifier power: 60 watts peak per channel
Power requirement: 100V – 240V, 50Hz/60Hz, 60W
Power consumption: <0.5W (standby); 60W (maximum)
Dimensions (H x W x D): 3-3/4" x 43-5/16" x 2-1-2"  (95mm x 1100mm x 64mm)
Weight (shipping): 7.3 lb (3.3kg)
Low-frequency transducer: One 8" down-firing cone
Amplifier power: 100 watts
Enclosure type: Ported
Power requirement: 100V – 240V, 50/60Hz, 100W
Power consumption: <0.5W (standby); 100W (maximum)
Dimensions (H x W x D): 14" x 13" x 12-5/8"  (355mm x 329mm x 320mm)
Weight (shipping): 23.1 lb (10.5kg)
Power
3.3v supply pins are provided on either side of the module.  These pins are all internally connected inside of the SiP and are provided for convenience so that Ginseng can be powered from either the left or right sides to make routing a PCB convenient for various applications.  It is generally recommended to power the 3.3V bus from only one side of the SiP. The pins on the other side should be shunted to ground through a 0.1uF and 1uF set of capacitors.
XPD
The XPD port is a SPI bus used for loading module firmware during development and mass production and also for debugging. One of the following two styles of XPD port connectors should be included on all motherboard designs that use Ginseng to ensure that loading code and debugging can be done easily. The XPD port interfaces to the XPD module which provides an interface to a host computer via RS-232 or USB. The XPD port operates from the VCC bus. To ensure proper functionality of the XPD interface, be sure to minimize the amount of capacitance on the XPD lines. Note: the XPD_RESET / EXT_RST pin is tolerant up to 1.8V MAX -- if control of the Reset pin is desired, a series diode must be used to guarantee the input voltage does not exceed the 1.8V max.
Customers can purchase an XPD Programming Module and ribbon cables from Eleven Engineering, or build their own based on the Schematic, BOM, Assembly Drawing, and Gerber files, which are all available from Eleven without charge. The XDE download program is also available from Eleven’s website without charge.
Digital IO
Ginseng has general purpose digital IO (“GPIO”) pins available for use by the application firmware. GPIO pins use the same logic voltage as the 3.3V pin and have the following software configurable features:  IO direction, drive strength (for output only), Schmitt Trigger (for input only), pull up (input only), pull down (input only), slew rate (output only). Ginseng is also capable of active-high and active-low configuration of LEDs.
Circuit diagram (Schematic)
Amplifier
HDMI port connector
Main board-full
BLUETOOTH OPERATION
To wirelessly stream audio to the soundbar from a Bluetooth-enabled device:
1. Confirm that the soundbar is in the Bluetooth pairing mode (the Bluetooth button LED will be flashing blue). If the LED is not flashing blue, press and hold the Bluetooth button until its LED begins to flash blue.
2. Place the device in the pairing mode. Use the device’s Bluetooth pairing menu to pair it with the soundbar. (The soundbar will appear as “SB400” in the device’s menu.) If the device requires a passcode, use 0000.
3. When the soundbar’s Bluetooth button LED illuminates constantly, it is paired with the device and you can stream audio via Bluetooth from the device to the soundbar.
To listen to audio from the Bluetooth device, press the Source button repeatedly until the Bluetooth Source Indicator LED illuminates.
To disconnect the Bluetooth device, press and hold the soundbar’s Bluetooth button until the LED begins flashing. To pair the soundbar with a different Bluetooth-enabled device, repeat Steps 1 – 3 with the
new device.
Bluetooth button (soundbar only): Press this button to play the audio stream from a paired Bluetooth device through the soundbar. (The Bluetooth Source Indicator LED will illuminate when a paired Bluetooth device is the active source.) Press and hold this button to force the soundbar into the Bluetooth pairing mode.
After turning the soundbar and subwoofer on for the first time, you will need to “pair” the subwoofer and soundbar so they both operate at the same wireless frequency. To pair the units, press the Wireless Pairing
switches on both units within 30 seconds of each other. The units will communicate with each other and operate at the same frequency.
NOTE: The maximum wireless operating distance between the soundbar and subwoofer is approximately 50 feet (15.3m)
Wireless Pairing switch and LED: 
Press this switch to initiate wireless pairing between the subwoofer and the soundbar.
The LED lights blue continuously when the sub-woofer is ON and linked to the sound bar.
The LED slowly flashes blue when the sub-woofer is ON and the wireless link is not established between the sub-woofer and the soundbar.
The LED rapidly flashes blue during the wireless pairing process.
Click on the pictures to magnify
Posted By: FRANK at 04:15
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