LG SJ5 User manual

SERVICE MANUAL
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE UNIT, READ THE “SAFETY PRECAUTIONS”
IN THIS MANUAL.
Internal Use Only
Wireless Sound Bar
JANUARY, 2017P/NO : AFN77558564
MODEL: SJ5 (SJ5, SPJ5-W)
MODEL: SJ5
(SJ5, SPJ5-W)

1-1
CONTENTS
SECTION 1 ........ GENERAL
SECTION 2 ........ CABINET & MAIN CHASSIS
SECTION 3 ........ ELECTRICAL
SECTION 4 ........ WIRELESS SUBWOOFER PART

1-2
SECTION 1
GENERAL
CONTENTS
ESD PRECAUTIONS......................................................................................................................................... 1-3
NAME OF EACH COMPONENT ....................................................................................................................... 1-4
WIRELESS SUBWOOFER CONNECTION....................................................................................................... 1-5
HIDDEN KEY MODE ......................................................................................................................................... 1-6
SOFTWARE UPDATE GUIDE........................................................................................................................... 1-7
SPECIFICATIONS ........................................................................................................................................... 1-13

1-3
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.

1-4
A
]jrtyjxjsxtw
B
Onxuqf~|nsit|
C
The buttons are located on the rear.
Ao/p:"atqzrj-:Liozxyx{tqzrjqj{jq
F"Qzshynts-:^jqjhyxymjkzshyntsfsinsuzy
xtzwhj/
1(Standby)
BDC IN : LNfifuyjwnsuzy
COPTICAL IN : Zuynhfqnsuzy
DPORTABLE IN : [twyfgqjnsuzy
EUSB
FHDMI OUT (TV ARC) / IN : SOXTtzyuzy&nsuzy
NAME OF EACH COMPONENT
• Front Panel
• Rear Panel

1-5
WIRELESS SUBWOOFER CONNECTION
LED indicator of wireless subwoofer
LED Color Status
Green
(Blink)
Attempting to make connection.
Green The connection is completed.
Red
The wireless subwoofer
is in standby mode
or the connection is failed.
Off
(No display)
The power cord of wireless
subwoofer is disconnected.
Setting up the wireless subwoofer
for the first time
1. Connect the power cord to the subwoofer and plug
the power cord into a power outlet.
2. Turn on the main unit : The sound bar and wireless
subwoofer will be automatically connected.
- Green LED on the rear of wireless subwoofer
turns on.
Manually pairing wireless subwoofer
When your connection is not completed, you can
check red LED on the wireless subwoofer and the
wireless subwoofer does not make sound. To solve
the problem, follow the steps below.
1. Press Pairing button on the rear of the wireless
subwoofer.
- The green LED on the rear of the wireless
subwoofer blinks quickly.
2. Turn on the main unit.
3. Pairing is completed.
- The green LED on the rear of the wireless
subwoofer turns on.
Note :
•It takes a few seconds (and may take longer) for the
main unit and the subwoofer to communicate with
each other and make sounds.
•The closer the main unit and the subwoofer, the
better sound quality. It is recommended to install the
main unit and the subwoofer as close as possible
and avoid the cases below.
- There is a obstacle between the main unit and the
subwoofer.
- There is a device using same frequency with this
wireless connection such as a medical equipment,
a microwave or a wireless LAN device.
- Keep the sound bar and the subwoofer away from
the device (ex. wireless router, microwave oven,
etc.) over 1m to prevent wireless interference.

1-6
HIDDEN MODE KEYS
EEPROM OPTION EDIT Main unit ' (Volume)' + Remote control ' (Night Mode)' for more than 3 seconds.
EEPROM CLEAR (Initialize) Main unit ' (Volume)' + Remote control 'SOUND EFFECT' for more than 3 seconds.
Display window : "E-CLR"
VERSION CHECK
Main unit ' (Volume)' + Remote control ' (Play/Pause)' for more than 3 seconds.
Next : Forward Skip / Previous : Backward Skip
Exit : Power off
Direction key for HIDDEN MODE Play/Pause (UP) / REPEAT (Down) / Forward Skip (Right) / Backward Skip (Left) /
AUTO VOL (Enter)
Demo Mode (Play) Enter : Main unit “MIN” (volume minimum state) + Main unit 'F' (Function) for 7 seconds.
Exit : Main unit 'F' (Function) for 7 seconds.
Wireless Demo Mode Main unit ' (Volume)' + Remote control 'REPEAT'
TV Remote control On/Off
On : Press and hold 'AV SYNC' on the remote control for about 2 seconds.
Off : Press and hold 'AV SYNC' and press it once again while “ON - TV REMOTE” is scrolled.
Display window : “ON - TV REMOTE” <=> “OFF - TV REMOTE”
BT Name Display Press and hold 'REPEAT' on the remote control.
BT Lock On/Off
On : Press and hold 'AUTO POWER' on the remote control for about 2 seconds in BT function
and press it once again while “OFF - BT LOCK” is scrolled.
Off : Press and hold 'AUTO POWER' on the remote control for about 2 seconds in BT function
and press it once again while “ON - BT LOCK” is scrolled.
Display window : “ON - BT LOCK” <=> “OFF - BT LOCK”
Wireless Factory Main unit “MIN” (volume minimum state) + Remote control ' (Mute)' for about 3 seconds.
HIDDEN KEY MODE

1-7
1. Using USB
1-1. Preparation
- Remote control.
- Do format USB Memory to FAT32 File system.
- USB : Update file exist only in the USB Memory stick.
Ex ) SJ5 :
MAIN E:\DSP_MAIN_SJ5.ROM (if USB driver is E:\)
MICOM E:\MICOM_SJ5.HEX (if USB driver is E:\)
BLUETOOTH E:\BT_SJ5.BIN (if USB driver is E:\)
MEQ E:\MEQ.BIN (if USB driver is E:\)
PEQ E:\EQ_PRG.BIN (if USB driver is E:\)
OPTION E:\OPT.BIN (if USB driver is E:\)
WIRELESS(TX)E:\WIRELESS_TX.bin (if USB driver is E:\)
WIRELESS(RX)E:\WIRELESS_RX.bin (if USB driver is E:\)
1-2. Update
1) Power on.
2) Select the USB function.
3) Insert USB.
4) Never remove USB or AC cord while updating.
5) During the update, LCD is displayed as like below.
MAIN Micom Bluetooth MEQ
PEQ WIRELESS(TX) WIRELESS(RX)
6) After update finish, power will be off automatically.
SOFTWARE UPDATE GUIDE
D-UP
EQ-UP
M-UP
TX-UP
BT-UP
RX-UP
MQ-UP

1-8
2-2. Connect Bluetooth
< Connected >
2-1. Run BT App (Music Flow Bluetooth)
< Not Connected >
2. Using APP (FOTA : Firmware update Over The Air)
Connection
button
Menu
button

1-9
2-3. Setting Menu
< Connected >
2-4-1. FOTA Start Button
(Phone should be available internet, Wi-Fi, LTE, 3G)
< Internet not Connected >
• Some Country(ex China) can not access to CDN
Server. And can not use FOTA. So, This Button can
not enable in that country.
Using APP (FOTA : Firmware update Over The Air)
Setting
button
FOTA Start
button

1-10
2-5. FOTA Caution
Using APP (FOTA : Firmware update Over The Air)
2-4-2. FOTA Start Button
< Internet Connected >
OK
button
FOTA Start
button

1-11
Using APP (FOTA : Firmware update Over The Air)
2-6. FOTA - CDN Download
Cancel Button is available
When CDN downloading.
2-7. FOTA - OPP Download
Cancel Button is not available
When OPP downloading.
Cancel
button
Cancel
button

1-12
Using APP (FOTA : Firmware update Over The Air)
2-8. FOTA - Write Flash
Cancel Button is not available
When Flash writing.
2-9. FOTA - Finish
Cancel
button
Power cable reconnect.

1-13
SPECIFICATIONS
• GENERAL
Power consumption Refer to the main label.
Networked standby : 0.5 W
(If all network ports are activated.)
AC adapter Model : DA-38A25
Manufacturer : Asian Power Devices Inc.
Input : 100 - 240 V ~ 50 - 60 Hz 1.2 A
Output : 25 V 1.52 A
Dimensions (W x H x D) Approx. 950 mm x 55 mm x 85 mm With foot
Operating temperature 5 °C to 35 °C
Operating humidity 5 % to 90 %
Bus Power Supply 5 V 500 mA
Available Digital Audio In Sampling Frequency 32 kHz, 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz
Available Digital Audio In format Dolby Audio, DTS Digital Surround, PCM
• INPUT/OUTPUT
OPTICAL IN (Digital audio in) 3 V (p-p), Optical jack x 1
PORTABLE IN (Portable in) 0.5 Vrms (3.5 mm stereo jack) x 1
HDMI IN 19 Pin (Type A, HDMI™ connector) x 1
HDMI OUT 19 Pin (Type A, HDMI™ connector) x 1
• AMPLIFIER (RMS OUTPUT)
Total 320 W RMS
Front 60 W RMS x 2 (4 Ωat 1 kHz, THD 10%)
Subwoofer 200 W RMS (3 Ωat 80 Hz, THD 10%)
• WIRELESS SUBWOOFER
Power requirements Refer to the main label on the wireless subwoofer.
Power consumption Refer to the main label on the wireless subwoofer.
Type 1 Way 1 Speaker
Impedance 3 Ω
Rated Input Power 200 W RMS
Max. Input Power 400 W RMS
Dimensions (W x H x D) Approx. 171 mm x 320 mm x 252 mm
• Designs and specifications are subject to change without prior notice.

1-14

2-1
SECTION 2
CABINET & MAIN CHASSIS
CONTENTS
DISASSEMBLY INSTRUCTIONS ..................................................................................................................... 2-2
1. HOW TO DISASSEMBLE THE MAIN UNIT ............................................................................................. 2-2
2. HOW TO DISASSEMBLE THE SUBWOOFER........................................................................................ 2-8
EXPLODED VIEWS ......................................................................................................................................... 2-11
1. MAIN UNIT SECTION............................................................................................................................. 2-11
2. WIRELESS SUBWOOFER SECTION.................................................................................................... 2-13
3. PACKING ACCESSORY SECTION ....................................................................................................... 2-15

2-2
DISASSEMBLY INSTRUCTIONS
1
1
2
Figure 1-1
1. HOW TO DISASSEMBLE THE MAIN UNIT
※ Before begin, position the Main Unit upside down.
1-1. Case Bottom Assembly
1) Remove the 21 screws.
2) Remove the Case Bottom Assembly.
Case Bottom Assembly

2-3
2
3
1
1
Figure 1-2 (2)
Figure 1-2 (1)
HOW TO DISASSEMBLE THE MAIN UNIT
2) Remove the screw.
3) Remove the Main Frame Assembly (Main Chassis + PCBA).
1-2. Main Frame Assembly
1) Disconnect the 3 harness cables from the Main PCB Assembly.
Main Frame Assembly
FL
FR
KEY

2-4
1
1
3
4
2
3
Figure 1-2-1
Figure 1-2-2
HOW TO DISASSEMBLE THE MAIN UNIT
1-2-1. Front PCB Assembly
1) Remove the 2 screws.
2) Remove the Front PCB Assembly.
1-2-2. Main PCB Assembly
1) Detach the cables from the Main chassis.
2) Disconnect the FFC cables from the Main PCB Assembly.
3) Remove the 3 screws (Main + HDMI Jack).
4) Remove the Main PCB Assembly.
Front PCB Assembly
Main PCB Assembly
Main Chassis

2-5
HOW TO DISASSEMBLE THE MAIN UNIT
1
2
3
45
4
Figure 1-2-3
1-2-3. BT and WIRELESS Module
1) Disconnect the FFC cable from the BT module.
2) Remove the BT module.
3) Disconnect the FFC cable from the WIRELESS module.
4) Disconnect the 2 Hooks.
5) Remove the WIRELESS module.
BT Module WIRELESS Module