LG CM4550 User guide

OWNER’S MANUAL

Mini Hi-Fi
System

Please read this manual carefully before operating
your set and retain it for future reference.

CM4550 (CM4550, CMS4550F, CMS4550W)

P/NO : MFL68941438_REV1.0

www.lg.com

Safety Information

Getting Started 3

CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

CAUTION: TO REDUCE THE RISK OF ELECTRIC

SHOCK DO NOT REMOVE COVER (OR BACK) NO

USER-SERVICEABLE PARTS INSIDE REFER SERVICING

TO QUALIFIED SERVICE PERSONNEL.

This lightning ash with
arrowhead symbol within an
equilateral triangle is intended to
alert the user to the presence of
uninsulated dangerous voltage
within the product’s enclosure that
may be of sucient magnitude to
constitute a risk of electric shock
to persons.

The exclamation point within an
equilateral triangle is intended
to alert the user to the presence
of important operating and
maintenance (servicing)
instructions in the literature
accompanying the product.

WARNING: TO PREVENT FIRE OR ELECTRIC SHOCK
HAZARD, DO NOT EXPOSE THIS PRODUCT TO RAIN
OR MOISTURE.

WARNING: Do not install this equipment in a
conned space such as a book case or similar unit.

CAUTION: Do not block any ventilation openings.
Install in accordance with the manufacturer’s
instructions.
Slots and openings in the cabinet are provided for
ventilation and to ensure reliable operation of the
product and to protect it from over heating. The
openings shall be never be blocked by placing
the product on a bed, sofa, rug or other similar
surface. This product shall not be placed in a built­in installation such as a bookcase or rack unless
proper ventilation is provided or the manufacturer’s
instruction has been adhered to.

CAUTION: This product employs a Laser System.
To ensure proper use of this product, please read
this owner’s manual carefully and retain it for future
reference. Shall the unit require maintenance,
contact an authorized service center.
Use of controls, adjustments or the performance of
procedures other than those specied herein may
result in hazardous radiation exposure.
To prevent direct exposure to laser beam, do not
try to open the enclosure.

CAUTION concerning the Power cord

Most appliances recommend they should be
placed upon a dedicated circuit;

That is, a single outlet circuit which powers only
that appliance and has no additional outlets or
branch circuits. Check the specication page of this
owner’s manual to be certain. Do not overload wall
outlets. Overloaded wall outlets, loose or damaged
wall outlets, extension cords, frayed power cords, or
damaged or cracked wire insulation are dangerous.
Any of these conditions could result in electric
shock or re. Periodically examine the cord of your
appliance, and if its appearance indicates damage
or deterioration, unplug it, discontinue use of the
appliance, and have the cord replaced with an
exact replacement part by an authorized service
center. Protect the power cord from physical or
mechanical abuse, such as being twisted, kinked,
pinched, closed in a door, or walked upon. Pay
particular attention to plugs, wall outlets, and the
point where the cord exits the appliance. The
Power Plug is the disconnecting device. In case of
an emergency, the Power Plug must remain readily
accessible.

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Getting Started

Getting Started4

This device is equipped with a portable battery or
accumulator.

Safety way to remove the battery or the
battery from the equipment: Remove the

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old battery or battery pack, follow the steps

Getting Started

in reverse order than the assembly. To prevent
contamination of the environment and bring on
possible threat to human and animal health, the
old battery or the battery put it in the appropriate
container at designated collection points. Do
not dispose of batteries or battery together with
other waste. It is recommended that you use
local, free reimbursement systems batteries and
accumulators. The battery shall not be exposed to
excessive heat such as sunshine, re or the like.

CAUTION: The apparatus shall not be exposed to
water (dripping or splashing) and no objects lled
with liquids, such as vases, shall be placed on the
apparatus.

CAUTION: Do not use high voltage products
around this product. (ex. Electrical swatter) This
product may malfunction due to electrical shock.

Getting Started 5

Disposal of your old appliance

1. When this crossed-out wheeled bin
symbol is attached to a product it
means the product is covered by
the European Directive 2002/96/EC.

2. All electrical and electronic
products should be disposed of
separately from the municipal
waste stream via designated
collection facilities appointed
by the government or the local
authorities.

3. The correct disposal of your
old appliance will help prevent
potential negative consequences
for the environment and human
health.

4. For more detailed information
about disposal of your old
appliance, please contact your city
office, waste disposal service or
the shop where you purchased the
product.

Disposal of waste batteries/accumulators

1. When this crossed-out wheeled
bin symbol is attached to batteries/
accumulators of Your product
it means they are covered by
European Directive 2006/66/EC.

2. This symbol may be combined with
chemical symbols for mercury(Hg),
cadmium(Cd) or lead(Pb) if the
battery Contains more that 0.0005%
of mercury,0.002% of cadmium or

0.004% of lead.

3. All batteries/accumulators should
be disposed separately from
the municipal waste stream via
designated collection facilities
appointed by the government or
the local authorities.

4. The correct disposal of your old
batteries/accumulators will help
to prevent potential negative
consequences for the environment,
animal and human health.

5. For more detailed information
about disposal of your old batteries/
accumulators, please contact your
city office, waste disposal service or
the shop where you purchased the
product.

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Getting Started

Table of Contents6

Table of Contents

1 Getting Started

3 Safety Information
8 Unique Features
8 Accesories
9 Playable file Requirement
9 – Music file requirement
9 – Compatible USB Devices
9 – USB device requirement
10 Remote control
12 Front Panel
14 Rear Panel

2 Connecting

15 Connecting to speakers
15 – Attaching the speakers to the unit
15 – Attaching the subwoofer to the unit
16 Optional Equipment Connection
16 – Antenna Connection
16 – USB Connection
17 – AUX IN Connection
17 – PORT. IN Connection
17 – Listening to the sound from your

external device

3 Operating

18 Basic Operations
18 – CD/USB Operations
18 – Auto Play
19 Other Operations
19 – Programmed Playback
19 – Deleting Programmed list
19 – Displaying file information (ID3 TAG)
20 – Searching for a folder and an MP3/

WMA file
20 – Deleting an MP3/WMA file
21 – Turn off the sound temporarily
21 – DEMO
21 – AUTO DJ playback
22 Using a BLUETOOTH® wireless

technology

22 – Listening to music stored on the

BLUETOOTH devices
24 Using the Music Flow Bluetooth App
24 – Install “Music Flow Bluetooth” App

onto Your Bluetooth Device
26 Radio Operations
26 – Listening to the radio
26 – Improving poor FM reception
26 – Presetting the Radio Stations
26 – Deleting all the saved stations
27 Sound adjustment
27 – Setting the surround mode
28 Setting the Clock
28 – Setting the Clock through

“Music Flow Bluetooth” App
28 – Using your player as an alarm clock
29 – Sleep Timer Setting
29 – Dimmer
29 – Auto power down
29 – AUTO POWER On
30 – Auto function change
30 LG Sound Sync

4 Troubleshooting

32 Troubleshooting

Table of Contents 7

5 Appendix

33 General specifications
34 Speaker specifications
35 Maintenance
35 – Handling the Unit
35 – Notes on Discs
35 Trademarks and Licenses

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2

3

4

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Getting Started8

Unique Features

BLUETOOTH®

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Getting Started

Listens to music stored on your Bluetooth device.

Portable In

Listens to music from your portable device. (MP3,
Notebook, etc.)

AUTO DJ

Blends the end of one song into the beginning of
another for seamless playback.

Music Flow Bluetooth

Music Flow Bluetooth is an app designed to let you
take control of some of LG’s latest Audio devices.

Refer to page 24-25

LG Sound Sync

Controls volume level of this unit by the remote
control of your LG TV that is compatible with LG
Sound Sync.

Accesories

Please check and identify the supplied accessories.

Remote Control (1) Batteries (2)

FM Antenna (1)

Getting Started 9

Playable file Requirement

Music file requirement

MP3/WMA le compatibility with this unit is limited
as follows.

y Sampling frequency : within 32 to 48 kHz (MP3),

within 32 to 48 kHz (WMA)

y Bit rate : within 32 to 320 kbps (MP3),

40 to 192 kbps (WMA)

y Maximum les : Data CD : 999 / USB : 2000

y Maximum folders : Data CD : 99 / USB : 200

y File extensions : “.mp3”/“.wma”

y Certain MP3/WMA les may not be played

depending on the type or format of the le.

y CD-ROM le format : ISO 9660/JOLIET

y We recommend that you use Easy-CD Creator,

which creates an ISO 9660 le system.

The DTS is not supported. In case of DTS audio
format, audio is not output.

You have to set the disc format option to
[Mastered] in order to make the discs compatible
with the LG players when formatting rewritable
discs. When setting the option to Live File System,
you cannot use it on LG players.

(Mastered/Live File System : Disc format system for
Windows Vista)

Compatible USB Devices

y MP3 Player : Flash type MP3 player.

y USB Flash Drive :

Devices that support USB2.0 or USB1.1.

y The USB function of this unit does not support

all USB devices.

USB device requirement

y Devices which require additional program

installation when you have connected it to a
computer, are not supported.

y Do not extract the USB device while in

operation.

y For a large capacity USB, it may take longer than

a few minute to be searched.

y To prevent data loss, back up all data.

y If you use a USB extension cable or USB hub, the

USB device is not recognized.

y Using NTFS le system is not supported.

(Only FAT(16/32) le system is supported.)

y This unit recognizes up to 2000 les.

y External HDD, Card readers, Locked devices, or

hard type USB devices are not supported.

y USB port of the unit cannot be connected to PC.

The unit cannot be used as a storage device.

y Some USB may not work with this unit.

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Getting Started

Getting Started10

Remote control

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Getting Started

• • • • • • • • • • a • • • • • • • • •

1 (Power) : Switches the unit ON or OFF.
B (Open/Close) : Opens and closes the disc tray.

PRESETFOLDER W/S :

- Searches for a folder of MP3/WMA les. When

a CD/USB containing MP3/WMA les in several
folders is being played, press PRESETFOLDER
W/S to select the folder you want to play.

- Chooses a preset number for a radio station.

FUNCTION : Selects the function and input source.
MUTE@ : Mutes the sound.

VOL +/- : Adjusts speaker volume.

PROGRAM/MEMORY :

- Stores radio stations.

- Deletes all the saved stations.

- Creates a programmed list you want to listen to.

? : The button is not available for any function.

SLEEP : Sets the system to turn off automatically at
a specified time.
(Dimmer : The display window will be darkened
by half.)

Battery Installation

Remove the battery cover on the rear of the
Remote Control, and insert two (size AAA) batteries
with 4 and 5 matched correctly.

Getting Started 11

• • • • • • • • • • b • • • • • • • • •

REPEAT(MENU) : Listens to your tracks/les
repeatedly or randomly.

C/V (Skip/Search) :

- Skips fast backward or forward.

- Searches for a section within a track/le.

TUNING -/+ : Selects the radio station.
Z ENTER :

- Stops playback.

- Cancels DELETE function.

d/M (Play/Pause) :

- Starts or pauses playback.

- Selects STEREO/MONO.

SOUND EFFECT : Chooses sound impressions.

AUTO DJ : Selects the AUTO DJ mode. (For more

information refer to page 21)

DELETE :

- Deletes MP3/WMA les.

- Deletes a song on the programmed list.

• • • • • • • • • • c • • • • • • • • •

0 to 9 numerical buttons : Selects numbered tracks,
les, or preset number.

INFO :

- Sees informations about your music. An MP3 le

often come with ID3 tag. The tag gives the Title,
Artist, Album or Time information.

- Sees the address of connected Bluetooth

device in Bluetooth mode.

REGION EQ : Chooses region equalizer.

• • • • • • • • • • d • • • • • • • • •

CLOCK : Sets a clock and checks a time.

ALARM : With the ALARM function you can turn

CD, USB play and Tuner reception on at a desired
time.

SET : Conrms the setting.

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Getting Started