LG CAR CD-MP3-WMA RECEIVER - LAC-M8600R.pdf - LG - ALTONZASX

CAR CD/MP3/WMA Receiver

SERVICE MANUAL

CAUTION

BEFORE SERVICING THE UNIT, READ THE “SAFETY PRECAUTIONS”

IN THIS MANUAL.

MODEL: LAC-M8600R/LAC-M8600

P/NO : AFN31223647

OCTOBER, 2006

[CONTENTS]

SECTION 1. SUMMARY

SERVICING PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

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

BLUETOOTH OPERATING GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-4

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

SECTION 2. ELECTRICAL

ELECTRICAL TROUBLESHOOTING GUIDE & WAVEFORMS . . . . . . . . . . . . . . . . . . . . . . . . 2-1

INTERNAL BLOCK DIAGRAM of ICs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-25

SCHEMATIC DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-27

PRINTED CIRCUIT BOARD DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-33

SECTION 3. EXPLODED VIEWS

CABINET AND MAIN FRAME SECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

MECHANISM (PICK-UP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

SECTION 4. REPLACEMENT PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1

- 1-1 -

SECTION 1. SUMMARY

SERVICING PRECAUTIONS

❶

Always disconnect the power source before:

1) Removing or reinstalling any component, circuit board, module or any other instrument assembly.

2) Disconnecting or reconnecting any instrument electrical plug or other electrical connection.

3) Connecting a test substitute in parallel with an electrolytic capacitor in the instrument.

CAUTION : A wrong part substitution or incorrect polarity installation of electrolytic capacitors may result in

an explosion hazard.

❷

Do not defeat any plug/socket B+ voltage interlocks with which instruments covered by

this service manual might be equipped.

❹

Do not apply power to this instrument and or any of its electrical assemblies unless all

solid-state device heat sinks are correctly installed.

❸

Always connect a test instrument’s ground lead to the instrument chassis ground before

connecting the test instrument positive lead. Always remove the test instrument ground

lead last.

1) The service precautions are indicated or printed on the cabinet, chassis or components. When servicing,

follow the printed or indicated service precautions and service materials.

2) The Components used in the unit have a specified conflammability and dielectric strength. When replac-

ing any components, use components which have the same ratings. Components marked in the cir-

cuit diagram are important for safety or for the characteristics of the unit. Always replace with the exact

components.

3) An insulation tube or tape is sometimes used and some components are raised above the printed writing

board for safety. The internal wiring is sometimes clamped to prevent contact with heating components.

Install them as they were.

4) After servicing always check that the removed screws, components and wiring have been installed cor-

rectly and that the portion around the service part has not been damaged. Further check the insulation

between the blades of attachment plug and accessible conductive parts.

- 1-2 -

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 sur-

face 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 gen-

erate 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.

- 1-3 -

BLUETOOTH OPERATING GUIDE

1. PARING

LG CAR AUIDO

PIN CODE:0000

Returns to the basic

screen after 6 seconds

and the BT indicator

is flashing.

[SEND] long

If registered phone

is existed.

1 minute has passed

after entering the paring

stand by mode.

Basic screen

Registering Error

Passed 3

seconds

After paring is established

- A Cellular phone tries to

link.

- If there is no trying to link

on a Cellular phone

within 20 seconds, Set is

automatically try to link.

Connecting

1. What is Paring?

- You have to register the bluetooth phone to the car audio Bluetooth for using Car audio as bluetoooth

handsfree. This is called Paring.

- After entering the Paring stand by mode, car audio is waiting for paring from Cellular phone.

Viceversa paring is not possible.

- Paring can be done up to 4 and the oldest paring is automatically deleted when paring is over 4.

2. How to do paring.

- Press the Send key over 1 second on basic screen to enter the paring stand by mode.

- 1-4 -

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