LG LAS454B Bedienungsanleitung

SERVICE MANUAL

CAUTION

BEFORE SERVICING THE UNIT, READ THE “SAFETY PRECAUTIONS”

IN THIS MANUAL.

Internal Use Only

Website http://biz.lgservice.com

2.1 ch Wireless Sound Bar

NOVEMBER, 2015P/NO : AFN77195019

MODEL: LAS454B (LAS454B, S55A3-D)

MODEL: LAS454B

(LAS454B, S55A3-D)

1-1

CONTENTS

SECTION 1 ........ GENERAL

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

SECTION 3 ........ ELECTRICAL

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

SECTION 5 ........ REPLACEMENT PARTS LIST

1-2

SECTION 1

GENERAL

CONTENTS

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

WIRELESS SUBWOOFER CONNECTION....................................................................................................... 1-4

HIDDEN KEY MODE ......................................................................................................................................... 1-5

MCS / EQ HIDDEN KEY GUIDE ....................................................................................................................... 1-6

MCS / EQ PROGRAM UPDATE GUIDE........................................................................................................... 1-7

SPECIFICATIONS ............................................................................................................................................. 1-8

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

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 of the wireless subwoofer

to the outlet.

2. Turn on the main unit : The main unit and wireless

subwoofer will be automatically connected.

Manually pairing wireless subwoofer

When your connection is not completed, you can see

the red LED or the blinking of yellow-green LED on

the wireless subwoofer and the subwoofer does not

make sound. To solve the problem, follow the below

steps.

1. Adjust volume level of the main unit to minimum by

pressing VOL - button repeatedly until stanby

LED on the main unit blinks slowly.

2. Press and hold (Mute) on the remote control for

about 3 seconds.

- The standby LED on the main unit blinks quickly.

3. If the LED of the wireless subwoofer already blinks

in yellow-green continually, you can skip this step.

Press and hold PAIRING on the back of the

wireless subwoofer for more than 5 seconds.

- The LED of the wireless subwoofer lights up

alternately in red and yellow-green.

4. Disconnect the power cord of the main unit and the

wireless subwoofer.

5. Connect them again after the LED of the main unit

and the wireless subwoofer is fully turned off.

The main unit and the wireless subwoofer will be

paired automatically when you turn on the main unit.

- When the connection is completed, you can see

the yellow-green LED on the subwoofer.

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.

1-5

HIDDEN KEY MODE

HIDDEN MODE KEYS

USB Mode/ UPDATE Main unit ‘- (Volume)’ + Remote control ‘VOL +’

EEPROM EDIT Main unit ‘- (Volume)’ + Remote control ‘CINEMA’

EEPROM CLEAR (Initialize) Main unit ‘- (Volume)’ + Remote control ‘VOICE’

VERSION CHECK Main unit ‘- (Volume)’ + Remote control ‘STANDARD’

CLIP OFF

Main unit ‘-(Volume)’ + Remote control ‘F(Function)’CLIP ON

CLIP ON GAIN MONITERING

MAX Volume Edit

Enter : Main unit ‘- (Volume)’ + Remote control ‘AUTO POWER OFF’

Setting : VOL +/-

Exit : STANDARD

CLIP Algorithm Edit Main unit ‘- (Volume)’ + Remote control ‘VOL -’

Wireless RF Change Main unit ‘- (Volume)’ + Remote control ‘WOOFER LEVEL +’

BYPASS Sound Effect Main unit ‘- (Volume)’ + Remote control ‘DRC ON’

APD Time Display Main unit ‘- (Volume)’ + Remote control ‘DRC OFF’

APD On/Off Main unit ‘- (Volume)’ + Remote control ‘AUTO POWER ON’

Up VOL +

Down VOL -

Right VOICE

Left STANDARD

Enter CINEMA

TV Remote ON Remote control ‘DRC ON’ for 3 seconds.

TV Remote OFF Remote control ‘DRC OFF’ for 3 seconds.

USB Log Out Main unit ‘-(Volume)’ + Remote control ‘ (Power)’

Wireless Demo Mode Main unit ‘-(Volume)’ + Remote control ‘WOOFER LEVEL +’

1-6

1. Version & Option Check

※Please connect the Display Jig to the main unit.

1) Power on.

2) Press main unit "-" (volume -) key and remote control STANDARD key during 3 seconds.

3) Check MCS version.

Ex)

4) Press remote control VOICE key 1 time.

Check Wireless Tx version.

Ex)

5) Press remote control VOICE key 1 time.

Check Wireless Rx version.

It’s possible to connect wireless subwoofer.

Ex)

6) Press remote control VOICE key 1 time.

Check EQ version.

Ex)

7) Press remote control VOICE key 1 time.

Check option.

Press remote control VOL + (Up), VOL - (Down), STANDARD (Left), VOICE (Right) key.

Ex)

8) Power cord unplug.

2. EEPROM Initialize

※Please connect the Display Jig to the main unit.

1) Power on.

2) Press main unit “-” (volume -) key and remote control VOICE during 3 seconds.

3) Display VFD “E2P CLR”.

4) Power off automatically.

5) Power cord unplug.

MCS / EQ HIDDEN KEY GUIDE

P1411182

TX150303

RX000000

Q1411170

OP00-00

1-7

1. Preparation

- Diplay Jig.

- Remote control.

- Do format USB Memory to FAT32 File system.

- USB : Update ﬁle exist only in the USB Memory stick.

Ex ) LAS454B :

MCS E:\PG540_FW_LAS454B_Ver.bin (if USB driver is E:\)

EQ E:\EQ_PRG.BIN (if USB driver is E:\)

Wireless Tx E:\WIRELESS_TX_150011.bin (if USB driver is E:\)

Wireless Rx E:\WIRELESS_RX_150303.bin (if USB driver is E:\)

2. Update

※Please connect the Display Jig to the main unit.

1) Power on.

2) Press main unit “-” (volume -) key and remote control “VOL +” during 3 seconds. (USB Mode)

3) Insert USB.

4) Display in VFD.

MCS : “MCS UP” “FINISH” Power off.

EQ : “EQ UP” “FINISH” Power off.

Wireless Tx : “UPDATE” “WR XX”(Progress) “FINISH” Power off.

Wireless Rx : “UPDATE” “SEND XX”(Progress) “FINISH” Power off.

5) Loading is shown while updating.

Never remove USB or AC cord.

6) After update ﬁnish, show FINISH in VFD and power of automatically.

7) Power cord un-plug.

MCS / EQ PROGRAM UPDATE GUIDE

1-8

SPECIFICATIONS

• GENERAL

Power requirements 120 V ~ 60 Hz

Power consumption 27 W

Networked standby : 0.5 W

(If all network ports are activated.)

Dimensions (W x H x D) Approx. 950 mm x 71 mm x 47 mm

(37.4 inch x 2.8 inch x 1.9 inch)

Net Weight Approx. 2.47 kg (5.4 lb)

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

Operating humidity 5 % to 90 %

• INPUTS

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

Portable in (PORT. IN) 0.5 Vrms (3.5 mm stereo jack) x 1

Available Digital Input Audio

Sampling Frequency 32 kHz, 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz

Available Digital Input Audio format Dolby Digital, DTS Digital Surround, PCM

• AMPLIFIER (RMS OUTPUT POWER)

Total 300 W

Front 50 W + 50 W (4 Ωat 1 kHz, 10% THD)

Subwoofer 200 W (3 Ωat 80 Hz, 10% THD)

• WIRELESS SUBWOOFER (S55A3-D)

Power requirements 120 V ~ 60 Hz

Power consumption 33 W

Type 1 Way 1 Speaker

Impedance 3 Ω

Rated Input Power 200 W

Max. Input Power 400 W

Dimensions (W x H x D) Approx. 171 mm x 390 mm x 261 mm

(6.7 inch x 15.3 inch x 10.2 inch)

Net Weight Approx. 5.6 kg (12.3 lb)

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

2-1

SECTION 2

CABINET & MAIN CHASSIS

CONTENTS

EXPLODED VIEWS ........................................................................................................................................... 2-3

1. MAIN SET SECTION ................................................................................................................................ 2-3

2. WIRELESS SUBWOOFER SECTION...................................................................................................... 2-5

3. PACKING ACCESSORY SECTION ......................................................................................................... 2-7