Master Electronics Repair !

Welcome to Master Electronics Repair! website.Here you will find:Service Modes, Circuit Diagrams,Service manuals, Firmware Update procedure, Disassemble procedure, Universal remote control setup codes, Troubleshooting, Diagnosing, Measuring, and more.... of many of LCD/LED TV/Displays,others various electronic apparates,trough many technical notes and tips/tricks to help repairing/fixing Troubles/ faults,for electrical technicians.This site helps you to save the Earth from electronic waste!

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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Note that if you don't find what you searched for, try it after a period of time; the site is a never ending job !

..............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 !

Saturday 28 November 2020

JBL PARTY BOX 200 AND PARTY BOX 300 - HOW TO DISASSEMBLE, SOFTWARE UPDATE PROCEDURE ,TROUBLESHOOTING, SCHEMATIC DIAGRAMS

Applicable to:

JBLPARTYBOX200AS, JBLPARTYBOX200BR, JBLPARTYBOX200CN, JBLPARTYBOX200EU, JBLPARTYBOX200IN,
JBLPARTYBOX200JN, JBLPARTYBOX200RU, JBLPARTYBOX200AM
JBLPARTYBOX300AS, JBLPARTYBOX300BR, JBLPARTYBOX300CN, JBLPARTYBOX300EU, JBLPARTYBOX300IN,
JBLPARTYBOX300JN, JBLPARTYBOX300RU, JBLPARTYBOX300AM

SPECIFICATIONS

AC power input: 100-240V ~ 50/60Hz
DC power input: 12V 8A
Built-in battery: Li-ion 10.4Ah, 7.2V (PartyBox 300)
Power consumption: 60W
Standby power consumption: <2W with BT connecting;<0.5W without BT connecting
USB output: 5V 2.1A
Speaker drivers: 2 woofer + 3 tweeter
Speaker impedance: 4 ohm
Total output power: 120 W RMS

JBLPARTYBOX200AS, JBLPARTYBOX200BR, JBLPARTYBOX200CN, JBLPARTYBOX200EU, JBLPARTYBOX200IN, JBLPARTYBOX200JN, JBLPARTYBOX200RU, JBLPARTYBOX200AM
JBLPARTYBOX300AS, JBLPARTYBOX300BR, JBLPARTYBOX300CN, JBLPARTYBOX300EU, JBLPARTYBOX300IN, JBLPARTYBOX300JN, JBLPARTYBOX300RU, JBLPARTYBOX300AM

Speaker drivers: 2 woofer + 3 tweeter
Speaker impedance: 4 ohm
Total output power: 120 W RMS

Software Upgrade Procedure
1. Put the "Harman_G1.HUI" to the root directory of U disk, and plug the U disk into USB port of machine.
2. Turn on the machine, make sure it is working.
3. Press and hold the "BT" key and "Vol+" key for 10s until the LED show white.
4. It is updating when the machine front LED show white. If it failed to upgrade, the front LED will show red. You need to restart from the step 1.
5. The machine front LED will show green after upgrade successfully and restart automatically.
6. Please press and hold the "BASS BOOST" key and "Vol-" key for 2s,to check the version number.

Key Combination - Button Function Mapping

Volume + & Bluetooth	Long press > 10s	Enter DFU mode in On Mode
Volume + & Play	Long press > 10s	Reset to factory default in On Mode.
Volume - & Bluetooth	Long press > 10s	Enter by-pass mode in On Mode.
Volume - & Bass boost	Long press > 2s	Show SW version in On Mode.
Play & Bass boost	Long press > 5s	Enter Demo mode in On Mode.
Volume + & Volume -	Short press < 2s at same time	Mute unit output In Mute status, press any button of Volume+ or Volume- to release mute

Troubleshooting

Do not work

The light ring is not bright

BT cannot work

Disassembly Procedure

Dismantling top cover assy

Remove the screw cover sheet 5pcs/silicone seal 1pcs/top side foot pad 4pcs by a needle.
Dismantle the screw accordingly. Pull out the top cover and unplug the connecting cable of main board,

Dismantling top cover assy

Dismantle 8pcs screw of the key board, and take out the key board and key button.

Dismantling terminal board
Unplug 2pcs turn-knob and dismantle 3pcs screw on the back panel.
Unplug 4pcs cable and dismantle 1pcs screw on main board, then take out the terminal board.

Dismantling power board

Dismantle 2pcs screw on AC cord socket, unplug a cable on main board and dismantle 4pcs screw on power board.
Take out the power board.

Dismantling main board

Dismantle 2pcs screw on back panel, unplug 4pcs connecting cable on main board, dismantle 3pcs screw on main board.
Take out the main board.

Dismantling side cover assy

Remove the bottom of side foot pad and screw cover sheet, dismantle the screw accordingly then take out side cover.

Dismantling bottom cover assy

Remove 4pcs foot pad and dismantle the screw accordingly, then take out the bottom cover assy.

Dismantling front panel assy

Dismantle 10pcs screw on front panel assy, use a straight screwdriver to separate front panel and wooden box carefully.
It's better to wrap screwdriver with fabric to avoid damage in separating process.