JBL Party box 200 and Party Box 300 - How to Disassemble, software update process -Troubleshooting

 

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.

Dismantling front panel assy and Dismantling speaker on wooden box

Unplug a cable, dismantle the screw on lamp board, then take out the board.

Dismantle the screw on speaker and pry speaker by a needle then take out the speaker.