LG NP8350 User manual

SERVICE MANUAL
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE UNIT, READ THE “SAFETY PRECAUTIONS”
IN THIS MANUAL.
Internal Use Only
Website http://biz.lgservice.com
JULY, 2015
MODEL: NP8350
MODEL: NP8350
SMART Hi-Fi AUDIO
P/NO : AFN77272348

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CONTENTS
SECTION 1 ........ GENERAL
SECTION 2 ........ CABINET & MAIN CHASSIS
SECTION 3 ........ ELECTRICAL
SECTION 4 ........ REPLACEMENT PARTS LIST

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SECTION 1
GENERAL
CONTENTS
ESD PRECAUTIONS......................................................................................................................................... 1-3
HIDDEN KEY LIST ............................................................................................................................................ 1-4
PROGRAM UPDATE GUIDE ............................................................................................................................ 1-5
SPECIFICATIONS ........................................................................................................................................... 1-11

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ESD PRECAUTIONS
Electrostatically Sensitive Devices (ESD)
Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components
commonly are called Electrostatically Sensitive Devices (ESD). Examples of typical ESD devices are integrated
circuits and some field-effect transistors and semiconductor chip components. The following techniques should
be used to help reduce the incidence of component damage caused by static electricity.
1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off
any electrostatic charge on your body by touching a known earth ground. Alternatively, obtain and wear a
commercially available discharging wrist strap device, which should be removed for potential shock reasons
prior to applying power to the unit under test.
2. After removing an electrical assembly equipped with ESD devices, place the assembly on a conductive surface
such as aluminum foil, to prevent electrostatic charge buildup or exposure of the assembly.
3. Use only a grounded-tip soldering iron to solder or unsolder ESD devices.
4. Use only an anti-static solder removal device. Some solder removal devices not classified as "anti-static" can
generate electrical charges sufficient to damage ESD devices.
5. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ESD
devices.
6. Do not remove a replacement ESD device from its protective package until immediately before you are
ready to install it. (Most replacement ESD devices are packaged with leads electrically shorted together by
conductive foam, aluminum foil or comparable conductive materials).
7. Immediately before removing the protective material from the leads of a replacement ESD device, touch the
protective material to the chassis or circuit assembly into which the device will by installed.
CAUTION : BE SURE NO POWER IS APPLIED TO THE CHASSIS OR CIRCUIT, AND OBSERVE ALL OTHER
SAFETY PRECAUTIONS.
8. Minimize bodily motions when handing unpackaged replacement ESD devices. (Otherwise harmless motion
such as the brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate
static electricity sufficient to damage an ESD device).
CAUTION. GRAPHIC SYMBOLS
THE LIGHTNING FLASH WITH APROWHEAD SYMBOL. WITHIN AN EQUILATERAL TRIANGLE, IS
INTENDED TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF UNINSULATED
“DANGEROUS VOLTAGE” THAT MAY BE OF SUFFICIENT MAGNITUDE TO CONSTITUTE A RISK OF
ELECTRIC SHOCK.
THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIANGLE IS INTENDED TO ALERT THE
SERVICE PERSONNEL TO THE PRESENCE OF IMPORTANT SAFETY INFORMATION IN SERVICE
LITERATURE.

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Hidden Key Description
Demo Wake Up “Function” + “Power” key for 7 seconds
Factory Reset “Add” key for 10 seconds
Wi-Fi Disable (Wi-Fi Power Off) “Wi-Fi setup” key for 5 seconds
Wi-Fi Reset “Add” key for 3 seconds
HIDDEN KEY LIST

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PROGRAM UPDATE GUIDE
1. INSTALLING “Music Flow Player” APP
1) Download “Music Flow Player” on the Apps Store or Google Play Store
Caution: Note for “Music Flow Player” App
- Depending on the device, “Music Flow Player” app may not work.
- Music Flow Player app will be available in version of the software as follow;
Android O/S : Ver 2.3.3 (or later) iOS O/S : Ver 5.1.1 (or later)
Figure 1-1
Type “Music Flow Player” in the search bar and tap “Search”.
Figure 1-2
Scan the QR code using the scanning application.
2) Installing Media Server software on your PC or Mac
Media server software allows you to access audio files stored in media server (PC, Mac or Network storage)
and enjoy them on your speaker via home networking. On www.lg.com website, type model name in the
search bar and find media server software on support tab.
Windows : Music Flow PC Software
Mac OS : Nero MediaHome 4 Essentials
Caution: Note for using Media Server
- On your PC or Mac, you must share the folder contained Audio content to play them on MUSIC Flow system.
- On your NAS Device, you must also need to change the settings of your NAS device to ensure that DLNA
server is enabled.
- On your Firewall software, you may also need to change the settings of your firewall software to ensure that
Windows file sharing is not blocked.

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2. PROGRAM UPDATE BY “Music Flow Player” APP
(BE / MICOM / MEQ is only possible)
Step 3. Select “Version info.” Step 4. Select “Device version info.”
Step 1. Connect speaker Step 2. Select “settings”
Install and run “Music Flow Player” app with next steps.

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Step 5. Check “Need to update” Step 6. System version check
Step 7. Select update button Step 8. Download from CDN Server

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Step 9. FW flash writing Step 10. Update is completed
CAUTION:
Do not power off NP8350 (Music Flow) until update is complete.
When the update is completed, the device reboots automatically.

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1) See the back side of NP8350 (Music Flow). Remove foot rubber.
2) Connect OTG cable to micro USB.
3) OTG Cable : Commercially available OTG cable to easily on the market can buy.
4) Start update by USB after booting.
3. PROGRAM UPDATE BY USB THROUGH MICRO USB JACK
(using OTG Cable)
USB

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5) Download program file name : LG_NS_9000M07.ROM
If security program (Water Wall) is activated on PC, you must save the file to the USB storage device and
disable the security software, then download the file to your set.
Caution : It is possible update there are one firmware in the USB.
6) How to update BE program
Copy firmware file to USB stick.
Insert USB stick to USB port of the NP8350 by USB JIG. (OTG)
You can see rotation of all LED in updating.
If updating is finished, all LED blink and off.
Rebooting NP8350 (Music Flow).
7) Other program update
Update method is same with BE program. Just change the update file name.
- MICOM : MICOM_NP8350.HEX
- MEQ : MEQ_NP8350.HEX
- TOUCH : TOUCH1_NP8350.DLD
- PEQ : EQ_PRG.BIN
Notes : You can find the upgrade status from LED status during software upgrading.
- On the upgrading : Power / Function / Play LED sequentially white blink
- Upgrading completed : Rebooting
After update completed, the unit will be reboot automatically.

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SPECIFICATIONS
Power supply 12 V 1.0 A (AC Adapter)
Built-in rechargeable battery
Power consumption 12 W
Networked standby : 3.7 W
(If all network ports are activated.)
AC Adapter Model: WA-12M12FG
Manufacturer: Yang Ming Industrial
Input: AC 100 - 240 V, 50/60 Hz
Output: 12 V 1.0 A
Dimensions (W x H x D) 194 mm x 64 mm x 70 mm (without foot)
Bluetooth Codec : SBC
Battery Battery capacity : 2600 mAh
Operating time is approx. 4 hours. (Wi-Fi Off Status: 6 hours)
It may vary depending on the battery status and operational
conditions. (Based on 26 volume, 1kHz signal, 400 mV portable
input and fully charged status)
Net Weight (Approx.): 0.8 kg
•Design and specifications are subject to change without notice.

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SECTION 2
CABINET & MAIN CHASSIS
CONTENTS
DISASSEMBLY INSTRUCTIONS ..................................................................................................................... 2-2
1. HOW TO DISASSEMBLE THE GRILLE................................................................................................... 2-2
2. HOW TO DISASSEMBLE THE FRONT COVER ..................................................................................... 2-4
3. HOW TO REPLACE THE BATTERY........................................................................................................ 2-6
ASSEMBLY INSTRUCTIONS ......................................................................................................................... 2-10
1. HOW TO ASSEMBLE THE GRILLE....................................................................................................... 2-10
EXPLODED VIEWS ......................................................................................................................................... 2-15
1. CABINET AND MAIN CHASSIS ............................................................................................................. 2-15
2. PACKING ACCESSORY SECTION ....................................................................................................... 2-17

2-2
DISASSEMBLY INSTRUCTIONS
Figure 1-2
Figure 1-1
1) Set is placed on top of soft sheet so as not to damage.
2) Use a thin flat tool (ex. A flathead screwdriver, recommended size : within width 2.5 mm), the Left end of the
set to lift grille into the grille hole.
CAUTION : Be careful not to damage the case.
1. HOW TO DISASSEMBLE THE GRILLE
3) Repeat work twice. (top and bottom) like Figure 1-1

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Figure 1-3
4) Remove grille in the opposite direction after holding grille.
CAUTION : Careful you don’t cut when to remove the grill.

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1) Remove the front screw 10 EA using a philips screwdriver.
2. HOW TO DISASSEMBLE THE FRONT COVER
Figure 2-2
2) After remove rubber foot on the bottom, remove screw of the four edges of bottom screw using a philips
screwdriver.
Figure 2-1

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Figure 2-4
Figure 2-3
4) Remove double - sided Tape attached at cover front.
3) Push inside to the battery hole and remove cover front.

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Figure 3-1
1) After remove foot on the bottom, remove screw of bottom screw using a phillips screwdriver.
3. HOW TO REPLACE THE BATTERY
2) Remove the Battery Assembly to release the hook using the (-) driver.
Figure 3-2

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Figure 3-3
Figure 3-4
3) Prepare new Battery Assembly.
4) Make the wire straight and mount the wire on the wafer to use (-) driver.