Lg Sp8ya User manual

SERVICE MANUAL

CAUTION

BEFORE SERVICING THE UNIT, READ THE “SAFETY PRECAUTIONS”

IN THIS MANUAL.

MODEL: SP8YA (SP8YA, SPP8-W)

P/NO : AFN30054107 FEBRUARY, 2021

MODEL: SP8YA

(SP8YA, SPP8-W)

Only for training and service purposes.

Wi-Fi 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 (OPTION)

1-2

Only for training and service purposes.

SECTION 1

SUMMARY

CONTENTS

PRODUCT SAFETY SERVICING GUIDELINES FOR AUDIO PRODUCTS.................................................... 1-3

SERVICING PRECAUTIONS ............................................................................................................................ 1-4

• GENERAL SERVICING PRECAUTIONS

• INSULATION CHECKING PRODEDURE

• ELECTROSTATICALLY SENSITIVE (ES) DEVICES

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

WOOFER & REAR PAIRING METHOD............................................................................................................ 1-6

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

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

SPECIFICATIONS ........................................................................................................................................... 1-17

1-3

Only for training and service purposes.

PRODUCT SAFETY SERVICING GUIDELINES

FOR AUDIO PRODUCTS

IMPORTANT SAFETY NOTICE

This manual was prepared for use only by properly trained audio-video service

technicians.

When servicing this product, under no circumstances should the original design be

modified or altered without permission from LG Corporation. All components should

be replaced only with types identical to those in the original circuit and their physical

location, wiring and lead dress must conform to original layout upon completion of

repairs.

Special components are also used to prevent x-radiation, shock and fire hazard.

These components are indicated by the letter “x” included in their component des-

ignators and are required to maintain safe performance. No deviations are allowed

without prior approval by LG Corporation.

Circuit diagrams may occasionally differ from the actual circuit used. This way, imple-

mentation of the latest safety and performance improvement changes into the set is

not delayed until the new service literature is printed.

CAUTION : Do not attempt to modify this product in any way. Never perform cus-

tomized installations without manufacturer’s approval. Unauthorized modifications

will not only void the warranty, but may lead to property damage or user injury.

Service work should be performed only after you are thoroughly familiar with these

safety checks and servicing guidelines.

GRAPHIC SYMBOLS

The exclamation point within an equilateral triangle is intended to alert

the service personnel to important safety information in the service

literature.

The lightning flash with arrowhead symbol within an equilateral

triangle is intended to alert the service personnel to the presence of

noninsulated “dangerous voltage” that may be of sufficient magnitude

to constitute a risk of electric shock.

The pictorial representation of a fuse and its rating within an equilat-

eral triangle is intended to convey to the service personnel the follow-

ing fuse replacement caution notice:

CAUTION : FOR CONTINUED PROTECTION AGAINST RISK

OF FIRE, REPLACE ALL FUSES WITH THE SAME TYPE AND

RATING AS MARKED NEAR EACH FUSE.

SERVICE INFORMATION

While servicing, use an isolation transformer for protection from AC line shock. After

the original service problem has been corrected, make a check of the following:

FIRE AND SHOCK HAZARD

1. Be sure that all components are positioned to avoid a possibility of adjacent com-

ponent shorts. This is especially important on items trans-ported to and from the

repair shop.

2. Verify that all protective devices such as insulators, barriers, covers, shields, strain

reliefs, power supply cords, and other hardware have been reinstalled per the

original design. Be sure that the safety purpose of the polarized line plug has not

been defeated.

3. Soldering must be inspected to discover possible cold solder joints, solder

splashes, or sharp solder points. Be certain to remove all loose foreign particles.

4. Check for physical evidence of damage or deterioration to parts and components,

for frayed leads or damaged insulation (including the AC cord), and replace if

necessary.

5. No lead or component should touch a high current device or a resistor rated at 1

watt or more. Lead tension around protruding metal surfaces must be avoided.

6. After reassembly of the set, always perform an AC leakage test on all exposed

metallic parts of the cabinet (the channel selector knobs, antenna terminals,

handle and screws) to be sure that set is safe to operate without danger of electri-

cal shock. DO NOT USE A LINE ISOLATION TRANSFORMER DURING THIS

TEST. Use an AC voltmeter having 5000 ohms per volt or more sensitivity in the

following manner: Connect a 1500 ohm, 10 watt resistor, paralleled by a .15 mfd

150V AC type capacitor between a known good earth ground water pipe, con-

duit, etc.) and the exposed metallic parts, one at a time. Measure the AC voltage

across the combination of 1500 ohm resistor and .15 mfd capacitor. Reverse the

AC plug by using a non-polarized adaptor and repeat AC voltage measurements

for each exposed metallic part. Voltage measured must not exceed 0.75 volts

RMS. This corresponds to 0.5 milliamp AC. Any value exceeding this limit consti-

tutes a potential shock hazard and must be corrected immediately.

TIPS ON PROPER INSTALLATION

1. Never install any receiver in a closed-in recess, cubbyhole, or closely fitting shelf

space over, or close to, a heat duct, or in the path of heated air flow.

2. Avoid conditions of high humidity such as: outdoor patio installations where dew

is a factor, near steam radiators where steam leakage is a factor, etc.

3. Avoid placement where draperies may obstruct venting. The customer should

also avoid the use of decorative scarves or other coverings that might obstruct

ventilation.

4. Wall- and shelf-mounted installations using a commercial mounting kit must follow

the factory-approved mounting instructions. A product mounted to a shelf or plat-

form must retain its original feet (or the equivalent thickness in spacers) to provide

adequate air flow across the bottom. Bolts or screws used for fasteners must not

touch any parts or wiring. Perform leakage tests on customized installations.

5. Caution customers against mounting a product on a sloping shelf or in a tilted

position, unless the receiver is properly secured.

6. A product on a roll-about cart should be stable in its mounting to the cart.

Caution the customer on the hazards of trying to roll a cart with small casters

across thresholds or deep pile carpets.

7. Caution customers against using extension cords. Explain that a forest of exten-

sions, sprouting from a single outlet, can lead to disastrous consequences to

home and family.

1-4

Only for training and service purposes.

SERVICING PRECAUTIONS

CAUTION: Before servicing the

Audio products

covered by this

service data and its supplements and addends, read and fol-

low the SAFETY PRECAUTIONS.

NOTE: if unforeseen circumstances create conflict between

the following servicing precautions and any of the safety

precautions in this publication, always follow the safety pre-

cautions.

Remember Safety First :

General Servicing Precautions

1. Always unplug the

Audio products

AC power cord from the

AC power source before:

(1) Removing or reinstalling any component, circuit board,

module, or any other assembly.

(2) Disconnecting or reconnecting any internal electrical

plug or other electrical connection.

(3) Connecting a test substitute in parallel with an electro-

lytic capacitor.

Caution: A wrong part substitution or incorrect polarity

installation of electrolytic capacitors may result in an

explosion hazard.

2. Do not spray chemicals on or near this

Audio products

or any

of its assemblies.

3. Unless specified otherwise in this service data, clean elec-

trical contacts by applying an appropriate contact cleaning

solution to the contacts with a pipe cleaner, cotton-tipped

swab, or comparable soft applicator.

Unless specified otherwise in this service data, lubrication

of contacts is not required.

4. Do not defeat any plug/socket B+ voltage interlocks with

which instruments covered by this service manual might be

equipped.

5. Do not apply AC power to this

Audio products

and / or any

of its electrical assemblies unless all solid state device heat

sinks are correctly installed.

6. Always connect the test instrument ground lead to an

appropriate ground before connecting the test instrument

positive lead. Always remove the test instrument ground

lead last.

Insulation Checking Procedure

Disconnect the attachment plug from the AC outlet and turn

the power on. Connect an insulation resistance meter (500V)

to the blades of the attachment plug. The insulation resis-

tance between each blade of the attachment plug and acces-

sible conductive parts (Note 1) should be more than 1Mohm.

Note 1: Accessible Conductive Parts include Metal panels,

Input terminals, Earphone jacks,etc.

Electrostatically Sensitive (ES) Devices

Some semiconductor (solid state) devices can be damaged

easily by static electricity. Such components commonly are

called Electrostatically Sensitive (ES) Devices. Examples

of typical ES 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 compo-

nent or semiconductor-equipped assembly, drain off any

electrostatic charge on your body by touching a known

earth ground. Alternatively, obtain and wear a commer-

cially 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 ES

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

ES 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 ES devices.

5. Do not use freon-propelled chemicals. These can generate

an electrical charge sufficient to damage ES devices.

6. Do not remove a replacement ES device from its protective

package until immediately before you are ready to install

it. (Most replacement ES devices are packaged with leads

electrically shorted together by conductive foam, aluminum

foil, or comparable conductive material).

7. Immediately before removing the protective material from

the leads of a replacement ES device, touch the protective

material to the chassis or circuit assembly into which the

device will be installed.

Caution: Be sure no power is applied to the chassis or cir-

cuit, and observe all other safety precautions.

8.Minimize bodily motions when handling unpackaged

replacement ES devices. (Normally harmless motion such

as the brushing together of your clothes fabric or the lifting

of your foot from a carpeted floor can generate static elec-

tricity sufficient to damage an ES device.)

1-5

Only for training and service purposes.

WIRELESS SUBWOOFER CONNECTION

LED indicator of wireless subwoofer

LED Color Status

Green

(Blink)

The connection is trying.

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 of the sound bar and the

wireless subwoofer to the outlet.

2. Turn on the sound bar. The sound bar and the

wireless subwoofer will be automatically connected.

- Pairing is completed. The green LED on the rear

of the 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.

Press Pairing on the rear of the wireless subwoofer.

- The 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.

3. Pairing is completed.

- 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 (3.3 ft) to prevent wireless

interference.

Pairing

XGGG

OZUZGP

1-6

Only for training and service purposes.

How to pair Subwoofer and Rear kit

1) Down volume minimum to use Remocon or MAIN set key (Press ‘-’ key).

2) Press ‘Mute’ key (about 2~3 seconds) on Remocon and then will display “WL RESET” on LCD.

3) Press paring key on the Subwoofer and Rear kit.

4) When woofer and rear kit attempt to connect wireless, the Green color LED blink faster than standby status.

5) When woofer and rear kit connect wireless completely, the LED will maintain Green color.

WOOFER & REAR PAIRING METHOD

< Remocon > < Rear kit front >

Mute Key

Paring Key

Standby LED

< Subwoofer > < Rear kit back >

1-7

Only for training and service purposes.

1. Factory Reset

Press Wi-Fi Mute key 5 seconds, VFD display RESET. System rebooting.

2. Check Version

• Soundbar Volume ‘−’ key + Remocon PLAY key for 3 seconds.

• Each Program Version is displayed when press Remocon Select key.

M : MICOM PQ : PEQ B : Main APK No Alphabet : Main Android

TX : Woofer TX RX : Woofer RX D : DSP H : HDMI

RR : Rear RX RT : Rear TX T : Touch L : Sub MICOM

< MICOM > < DSP > < PEQ >

3. Woofer (Rear Speaker) Reset

Soundbar Volume ‘−’ key and Remocon MUTE for 3sec

• Volume must be Min ( 0 ) before input those keys.

• Woofer (Rear Speaker) must Power Off before input those keys.

• Woofer and Rear Speaker can be reset by pressing reset button on each unit.

HIDDEN KEY MODE

1-8

Only for training and service purposes.

1. Preparation

1) SP8 Series Units : Main Unit, Wireless Subwoofer Unit, Rear Speaker Unit(optional)

2) SP8 RCU

3) USB Memory

4) Smart Phone with “LG Wi-Fi Speaker” App

Caution

•Take care not to power off during update.

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

FIRMWARE UPDATE GUIDE

Necessary

<RCU>

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.

for OOBE update

“LG Wi-Fi Speaker” App

must be installed.

1-9

Only for training and service purposes.

2. USB update

Step 1. Prepare SP8 update binaries.

USB

Update module SP8 Filename Sample

B/E MAIN_SP8_*.bin MAIN_SP8_WSB_2002171.bin

Micom MICOM_SP8_*.HEX MICOM_SP8_WSB_2002121_EBA2_rev2503.HEX

Touch TOUCH_SP8_*.DLD TOUCH_SP8_C4A_2001071_0xF535.dld

Wireless Subwoofer Tx WOOFERTX_SP8_*.BIN WOOFERTX_SP8_BAR_190007_PRO1_

CHECKSUM_C7CA.bin

Wireless Subwoofer Rx WOOFERRX_SP8_*.BIN WOOFERRX_SP8_BAR_191008_PRO1_

CHECKSUM_90BE.bin

Wireless Rear Tx REARTX_SP8_*.BIN REARTX_SP8_BAR_194006__PRO1_CHECKSUM_

BEA0.bin

Wireless Rear Rx REARRX_SP8_*.BIN REARRX_SP8_BAR_185001_PRO1_CHECKSUM_

DFDF.bin

MEQ MEQ_SP8_*.BIN MEQ_SP8_WSB_20012874_113652.BIN

PEQ PEQ_SP8_*.BIN PEQ_SP8_171016.bin

Step 2. Copy all updated SP8 binaries to USB memory.

Step 3. Power on SP8 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.

1-10

Only for training and service purposes.

USB update

Step 7. Attach USB which has update binaries to the USB slot back of SP8 main unit.

Step 8. Update binaries will be copied from USB disk to temporary area of SP8.

VFD will display “READ”.

Step 9. If update is ready, VFD will display “REMOVE”.

If you detach the USB disk from USB slot, update will start automatically.

OUT

READ

REMOV Escroll

Update module VFD display Model

B/E SP8

MICOM SP8

Touch SP8

Wireless Subwoofer Tx SP8

Wireless Subwoofer Rx SP8

Wireless Rear Tx SP8

Wireless Rear Rx SP8

Wireless Rear L Tx -

Wireless Rear L Rx -

Wireless Rear R Tx -

Wireless Rear R Rx -

MEQ -

PEQ -

B-UPD AT E scroll

T- U P D AT E scroll

M-UPD AT E

scroll

WT 00

WR 00

RT 00

RR 00

BR 00

AT 00

MQ-UP DATE

scroll

AR 00

EQ-UP DATE

scroll

BT 00

<SP8 Series

VFD Display in Update>

1-11

Only for training and service purposes.

USB update

Step 10. SP8 main unit will be reset automatically after update ﬁnish.

Step 11. Check the current versions to verify whether the update was successfully completed or not.

1) Press “Version Check” hidden key

• Version Check Hidden Key : Press Set “Vol-” + RCU “Enter” for 3secs.

M2011241

Module VFD display sample Model

MICOM SP8

PEQ SP8

B/E SP8

C4A SP8

MEQ SP8

Wireless Subwoofer Tx SP8

Wireless Subwoofer Rx SP8

Wireless Rear Tx SP8

Wireless Rear Rx SP8

Wireless Rear L Tx -

Wireless Rear L Rx -

Wireless Rear R Tx -

Wireless Rear R Rx -

Touch SP8

PQ2010210-6326

B2011250

1.44.219548

MQ2010229

TX210002

RX201005

RT214002

RR205010

BT214202

AT214102

BR205210

AR205110

T2001075

PLEAS E WAIT

scroll

USB

2) SP8 shows the version of all modules in the order shown below.

• The order that SP8 shows version in version check hidden mode

SP8 :

MICOM PEQ B/E C4A MEQ Wireless Subwoofer Tx Wireless Subwoofer Rx 

Wireless Rear Tx Wireless Rear Rx Touch Option

3) Compare the version VFD shows and you updated.

< SP8’s VFD Display

in Version Display>

1-12

Only for training and service purposes.

3. OOBE update (LG App)

Step 1. Prepare SP8 main unit and Smart Phone with “LG Wi-Fi Speaker” App.

In setting up the network in OOB(out of the box), SP8 will be updated to the latest version

automatically.

Step 2. Power on SP8 main unit.

Step 3. Open “LG Wi-Fi Speaker” App.

Step 4. Set up SP8 using “LG Wi-Fi Speaker” App.

1-13

Only for training and service purposes.

OOBE update (LG App)

Step 5. After network setup is complete, if the update server has uploaded the latest version that requires

an update, the SP8 will automatically proceed with the update at this step.

If the SP8 is already the latest version, App shows SP8 without update step.

Step 6. At the end of the update step, LG App shows the SP8 on device list.

8SGDWLQJ

B-UPD

M-UPD

AT E

scroll

AT E

scroll

PLEAS E WAIT

scroll

WI-FI

1-14

Only for training and service purposes.

4. OOBE update (Google Home App)

※Setting up a network through Google Home App

LG SP8 support Google Home App to connect Wi-Fi network.

So OOBE Update is also provided by Google Home App.

But LG does NOT recommend using Google Home App to setting up a network.

Please use LG Wi-Fi Speaker App if you could.

Step 1. Prepare SP8 main unit and Smart Phone with “Google Home” App. (LG Wi-Fi Speaker App

recommended) In setting up the network in OOB(out of the box), SP8 will be updated to the

latest version automatically.

Step 2. Power on SP8 main unit.

Step 3. Open “Google Home” App.

Step 4. Set up SP8 using Google Home App.

1-15

Only for training and service purposes.

OOBE update (Google Home App)

5220

Step 5. If the update server has uploaded the latest version that requires an update,

the SP8 will automatically proceed with the update at this step.

If the SP8 is already the latest version, network setup will be ﬁnish without update.

B-UPD

M-UPD

AT E scroll

PLEAS E WAITscroll

WI-FI

8SGDWLQJ 5 220 6SHDN HU

1-16

Only for training and service purposes.

OOBE update (Google Home App)

Step 6. At the end of the update step on Google Home App, the network setup is complete.

1-17

Only for training and service purposes.

SPECIFICATIONS

• GENERAL

Power consumption Refer to the main label on the unit.

AC adapter Model: DA-50F25

Manufacturer : Asian Power Devices Inc.

Input: 100 - 240 V ~ 50 - 60 Hz

Output: 25 V 2 A

Dimensions (W x H x D) Approx. 1060.0 mm x 57.0 mm x 119.0 mm (with foot)

(41.7 inch x 2.2 inch x 4.7 inch)

Operating temperature 5 °C to 35 °C (41 °F to 95 °F)

Operating humidity 5 % to 90 %

Bus Power Supply (USB) 5 V 500 mA

Available Digital Input Audio Sampling Frequency

32 kHz, 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, 192 KHz

Available Digital Input Audio format Dolby Atmos, Dolby Audio, DTS:X, DTS-HD, PCM

• INPUT/OUTPUT

OPTICAL IN 3 V (p-p), Optical jack x 1

HDMI IN 19 Pin (Type A, HDMI™ connector) x 1

HDMI OUT 19 Pin (Type A, HDMI™ connector) x 1

1080p, 1080i, 720p, 576p, 480p

2160p@24/25/30 Hz 4:4:4

2160p@60/50 Hz 4:2:0

K Sources dependent on HDCP 2.2 are supported at 4K resolutions.

• AMPLIFIER (RMS Output)

Total 440 W RMS

Front 40 W RMS x 2 (4 Ωat 1 kHz, THD 10 %)

Center 40 W RMS (4 Ωat 1 kHz, THD 10 %)

Top 50 W RMS x 2 (4 Ωat 1 kHz, THD 10 %)

Subwoofer 220 W RMS (3 Ωat 80 Hz, THD 10 %)

• WIRELESS SUBWOOFER

Power requirements Refer to the main label on the subwoofer.

Power consumption Refer to the main label on the subwoofer.

Type 1 Way 1 Speaker

Impedance 3 Ω

Rated Input Power 220 W RMS

Max. Input Power 440 W RMS

Dimensions (W x H x D) Approx. 221.0 mm x 390.0 mm x 312.8 mm

(8.7 inch x 15.4 inch x 12.3 inch)

• SYSTEM

Wireless LAN (Internal antenna) 802.11a/b/g/n Wi-Fi networks

SPK8-S (SPK8-S, S78S1-S), Sold Separately

• WIRELESS RECEIVER

Power requirements Refer to the main label on the wireless receiver.

Power consumption Refer to the main label on the wireless receiver.

Rear 70 W RMS x 2 (3 Ωat 1 kHz, THD 10 %)

Dimensions (W x H x D) Approx. 60.0 mm x 220.0 mm x 175.0 mm

(2.4 inch x 8.7 inch x 6.9 inch)

• REAR SPEAKERS (Each)

Type 1 Way 1 Speaker

Impedance 3 Ω

Rated Input Power 70 W RMS

Max. Input Power 140 W RMS

Dimensions (W x H x D) Approx. 100.0 mm x 140.0 mm x 100.0 mm

(3.9 inch x 5.5 inch x 3.9 inch)

• Designs and specifications are subject to change without prior notice.

1-18

Only for training and service purposes.

2-1

Only for training and service purposes.

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........................................................................................ 2-6

EXPLODED VIEWS ........................................................................................................................................... 2-9

1. MAIN UNIT (SP8) SECTION .................................................................................................................... 2-9

2. WIRELESS SUBWOOFER (SPP8-W) SECTION................................................................................... 2-13

3. PACKING ACCESSORY SECTION ....................................................................................................... 2-17