LG SNC4R Bedienungsanleitung

SERVICE MANUAL

CAUTION

BEFORE SERVICING THE UNIT, READ THE “SAFETY PRECAUTIONS”

IN THIS MANUAL.

MODEL: SNC4R (SNC4R, SPH4B-W) / SPJ4-S (SPJ4-S, S65S3-S)

P/NO : AFN30054142 MARCH, 2021

MODEL: SNC4R (SNC4R, SPH4B-W)

SPJ4-S (SPJ4-S, S65S3-S)

Only for training and service purposes.

Wireless Sound Bar

“Any reproduction, duplication, distribution (including by way of email, facsimile or other

electronic means), publication, modification, copying or transmission of this Service Manual is

STRICTLY PROHIBITED unless you have obtained the prior written consent of the LG Electronics

entity from which you received this Service Manual. The material covered by this prohibition includes,

without limitation, any text, graphics or logos in this Service Manual.”

1-1

Only for training and service purposes.

CONTENTS

SECTION 1 ........ GENERAL

SECTION 2 ........ CABINET & MAIN CHASSIS

SECTION 3 ........ ELECTRICAL

SECTION 4 ........ WIRELESS SUBWOOFER PART

SECTION 5 ........ WIRELESS RECEIVER PART

1-2

Only for training and service purposes.

SECTION 1

GENERAL

CONTENTS

ESD PRECAUTIONS......................................................................................................................................... 1-3

LOCATION OF CUSTOMER CONTROLS........................................................................................................ 1-4

WIRELESS SUBWOOFER CONNECTION....................................................................................................... 1-5

REAR SPEAKERS CONNECTION ................................................................................................................... 1-6

HIDDEN KEY MODE ......................................................................................................................................... 1-7

FIRMWARE UPDATE GUIDE ........................................................................................................................... 1-8

SPECIFICATIONS ........................................................................................................................................... 1-11

1-3

Only for training and service purposes.

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

Only for training and service purposes.

LOCATION OF CUSTOMER CONTROLS

Front panel

Rear panel

Display Window

- Display window will be darkened automatically if there is no key input for 15 seconds.

When you press any button, the display window will brighten.

Remote sensor

(Standby)

- Switches the unit ON or OFF.

F(Function)

- Select the function and input source by pressing Frepeatedly.

Input source / Function Display

Optical LG Sound Sync (Wired) OPT

Bluetooth BT

LG Sound Sync (Wireless) LG TV

USB USB

+/−(Volume)

- Adjusts volume level.

DC IN

- Connect to the AC adapter.

OPTICAL IN

- Connect the OPTICAL IN jack on the back of the unit to OPTICAL OUT jack on the TV.

USB Port

- Connect USB memory device to the USB port on the back of the unit.

1-5

Only for training and service purposes.

WIRELESS SUBWOOFER CONNECTION

LED indicator of wireless subwoofer

LED Color Status

Yellow - green

(Blink)

The connection is trying.

Yellow - 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.

- Yellow - green 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 yellow - green LED on the rear of the wireless

subwoofer blinks quickly. (If the green LED does

not blink, press and hold the PAIRING.)

2. Turn on the sound bar.

- Pairing is completed. The yellow - green LED on

the front 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.

XG

1-6

Only for training and service purposes.

Connecting the rear speakers

1. Connect the black stripe wire to the terminal

marked - (minus) and the other end to the terminal

marked + (plus).

2. Connect the wireless receiver and the rear

speakers (right, left) with the speaker cables.

Color Position

Grey Rear right

Blue Rear left

Note

You need to purchase the wireless rear speakers kit

(SPK8-S) to enjoy surround sound.

Caution

•Use the speaker supplied with this unit only. Using

any other speaker may cause malfunction.

•Be sure to match the speaker cable to the

appropriate terminal on the components: + to + and

– to –. If the cables are reversed, the sound will be

distorted and will lack bass.

LED indicator of wireless receiver

LED Color Status

Yellow - green

(Blink) The connection is trying.

Yellow - green

The wireless receiver is receiving

the signal from the sound bar.

Red The wreless receiver is in

standby mode.

Off

(No display)

The power cord of wireless

receiver is disconnected

Setting up the wireless receiver for the

ﬁrst time

1. Connect the power cord to the wireless receiver

to the outlet.

2. Turn on the main unit : The sound bar and

wireless receiver will be automatically connected.

- Yellow - green LED on the wireless receiver

turns on.

Manually pairing wireless receiver

When your connection is not completed, you can

see the red LED on the wireless receiver and rear

speakers are not made sound. To solve the problem,

follow the below steps.

1. Press PAIRING button on the rear of the wireless

receiver.

- The yellow - green LED on the wireless receiver

blinks quickly.

2. Turn on the main unit

- Paring is completed. The yellow - green LED on

the wireless receiver turns on.

REAR SPEAKERS CONNECTION

1-7

Only for training and service purposes.

HIDDEN MODE KEYS

EEPROM EDIT Main unit ‘ (Volume)’ + Remote control ‘NIGHT ON’

EEPROM CLEAR (Initialize) Main unit ‘ (Volume)’ + Remote control ‘'ASC ’

VERSION CHECK Main unit ‘ (Volume)’ + Remote control ‘ (Play/Pause)’

HIDDEN KEY MODE

1-8

Only for training and service purposes.

1. Preparation

1) SL4Y Series Units : Main Unit, Wireless Subwoofer Unit, Rear Speaker Unit(optional).

2) SL4Y RCU.

3) USB Memory.

4) Android Device with “Music Flow Bluetooth” App for FOTA update, “Version Check APP” for Version Check.

※Take care not to power off during update.

※Do format USB memory before update (FAT32 ﬁle system).

FIRMWARE UPDATE GUIDE

Necessary

If wireless subwoofer rx module

of primary unit is updated.

for USB update

Optional as model sufﬁx

If wireless rear rx module is updated

<RCU>

Necessary

1-9

Only for training and service purposes.

2. USB Update

Step 1. Prepare SL4 update binaries.

Update module Preﬁx & Extension Filename Sample

DSP DSP_SL4Y*.ROM DSP_SL4_1812100_PRO1_rev1619.rom

Wireless Subwoofer Tx WOOFERTX_SL4Y*.BIN WOOFERTX_SL4_190007_181206_checksum_C7CA.bin

Wireless Subwoofer Rx WOOFERRX_SL4Y*.BIN WOOFERRX_SL4_191008_181206_checksum_90BE.bin

Wireless Rear Tx REARTX_SL4Y*.BIN REARTX_SL4_BAR_19.40.06_CHECKSUM_BEA0.bin

Wireless Rear Rx REARRX_SL4Y*.BIN REARRX_SL4_Ver185001_171128_checksum_DFDF.bin

PEQ PEQ_SL4Y*.BIN PEQ_SL4_1812070_PRO1_0EAD.bin

Option OPT*.BIN OPTION_SL4Y_EUS.bin

SLx : “SL4”, depends on model option.

Step 2. Copy all updated SL5/ SL6 binaries to USB memory.

Step 3. Power on SL5/ SL6 main unit.

Step 4. If there is an updated wireless subwoofer rx binary in update list,

you need to pair between main unit and subwoofer unit before start update.

Step 5. If there is an updated wireless rear rx binary in update list,

you need to pair between main unit and rear speaker unit before start update.

Step 6. Press Function key to change function to USB.

Verify whether USB function is or not by VFD.

Step 7.Attach USB which has update binaries to the USB slot back of SL4Y main unit.

Step 8. Update will start automatically.

VFD Model : Check VFD what module is in progress one by one.

USB

Update module VFD display

DSP

Option

PEQ

Wireless Subwoofer Rx

Wireless Subwoofer Tx

Wireless Rear Tx

Wireless Rear Rx

D-UP

OP-UP

EQ-UP

WR 00

WT 00

RT 00

RR 00

※The numbers in VFD display of wireless modules will

increase in progress as progress percent from 00 to 100.

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