LG LNC1200EEFS Service Manual

CAR NAVIGATION SYSTEM

SERVICE MANUAL

MODEL: LNC1200EEFS

SERVICE MANUAL

MODEL: LNC1200EEFS

[CONTENTS]

SECTION 1. SPECIFICATION

SECTION 2. NAME OF EACH PART

SECTION 3. OVERALL BLOCK DIAGRAM

SECTION 4. EXPLODED VIEWS

SECTION 5. FRONT PART

SECTION 6. MAIN PART

SECTION 7. AUDIO PART

SECTION 8. TROUBLESHOOTING GUIDE

SECTION 1. SPECIFICATION

[CONTENTS]

• SPECIFICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

1-1

SPECIFICATION

GENERAL

Output Power .........................................................................................................Digital Output (S/PDIF)

Power Source ............................................................................................................................DC 14.4 V

Ground System ............................................................................................................................ Negative

Dimensions (W x H x D) ................................................................................. 262.54 x 156.2 x 236.2 mm

Net Weight ........................................................................................................................................2.8 kg

DISPLAY

LCD ................................................................................................................17.78 cm (7 inch) TFT LCD

Resolution .................................................................................................................................. 800 X 480

Back Light .................................................................................................................................. LED Type

CD SECTION

Frequency Response .......................................................................................................20 Hz to 20 kHz

S/N Ratio .......................................................................................................................................... 70 dB

Distortion .......................................................................................................................................... 0.3 %

Channel Separation (1 kHz) ............................................................................................................. 60 dB

RADIO SECTION

FM

Frequency Range ............................................................................................................ 87.5 to 108 MHz

S/N Ratio .......................................................................................................................................... 50 dB

Distortion ............................................................................................................................................. 1 %

Usable Sensitivity .........................................................................................................................12 dBμV

AM (MW)

Frequency Range ............................................................................................................ 522 to 1620 kHz

S/N Ratio .......................................................................................................................................... 45 dB

Distortion .......................................................................................................................................... 1.0 %

Usable Sensitivity .........................................................................................................................35 dBμV

SECTION 2. NAME OF EACH PART

[CONTENTS]

• CONTROL PANEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

• STEERING WHEEL REMOTE CONTROL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

2-1

CONTROL PANEL

1. Disc slot

2. Eject (

)

Press to eject a disc from the unit.

3. RESET hole

Press with thin object to reset the unit when it
does not operate normally.

4. FM/AM

Press to select FM/AM band.

5. MEDIA

Press to select a source: CD/USB/iPod/BT/AUX

6. Display on/off (

)

Press to switch between the display on and off.

7. LCD

Touch to operate.

8. Left knob (POWER/VOLUME)

- Press: power on/off

- Turn: volume control

9. Info (

)

Press to view the destination, route, and traffic
information.

• Destination: shows the information of current
vehicle position and destination.

• Route: shows the route information.

• Traffic: shows the traffic information.

- Traffic info on route: the list of traffic

information on active route.

- Traffic info nearby: the list of traffic

information around the current vehicle
position.

10.

SEEK/TRACK

• Press to:

- Automatic tuning:

- Track up/down:

• Press and hold to:

- Search (FF/REW):

11. SETUP (

)

• Press to access system settings.

• Press and hold to check the device ID, the
software version, the navigation version, and
the map version.

12. Right knob (TUNE)

Rotate it clockwise/counterclockwise.

•

Searches the previous or next radio frequency.

- Manual tuning

• Skips a track/file up/down in all list screen.

• ZOOM IN/ZOOM OUT

- Rotate to change the map scale on the map
screen.

Repeat voice guidance (

)

Push to repeat the last guidance advice when
guidance is active.

13. PHONE ( )

Press to operate Bluetooth HandsFree function.

14. NAV

Press to enter destination menu.
Various methods for entering a destination are

available.

15. MAP

Press to display the map.

16. CD indicator light (CD-IN)

When a disc is inserted, the indicator is
illuminated.

17. Clock (

)

•

Press to display the digital/analog clock and
outside temperature in both power on/off status.

• Press and hold to display to the [Clock] menu.

4

5
6

7

14

8

13

12

1110

1

2

9

15

16

17

3

RADIO

USB

CD

iPod

BT

USB

CD BT

iPod

2-2

STEERING WHEEL REMOTE CONTROL

1

2

3

4

5

6

1. MODE

Press to select a source.
FM → AM → CD → USB (or iPod) → BT
→ AUX → FM...

2. Volume (VOL+/VOL-)

Increases or decreases the volume level.

3.

• Press to:

- Automatic tuning:

- Track up/down:

• Press and hold to:

- Manual tuning:

- Search (FF/REW):

4.

Press to operate Bluetooth HandsFree function.

• Press to accept a call.

• Press to make a call from last calls.

• Press and hold to switch the sound path
during a call.

(Hands free ↔ phone)

5.

Press to hang up a call.

6.

• Press to activate voice recognition mode.

• Press once more to cancel voice recognition.

RADIO

USB

CD

iPod

BT

RADIO

USB CD

BT

iPod

SECTION 3. OVERALL BLOCK DIAGRAM

[CONTENTS]

• OVERALL BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

3-23-1

OVERALL BLOCK DIAGRAM

Main Board Audio Board

DDR2

(128 MB)

CD

SPDIF

EXTERNAL AMP

I2C

i-NAND

(8 GB)

DDR2

(128 MB)

DDR2

(128 MB)

DDR2

(128 MB)

GPS

SDRAM

LCD

DSP

AC97

AUX Audio In

I

2

S1

7" LCD
Module

Stereo
Codec

Stereo

Codec

L/R

MIC Touch

NAVI

MEDIA

Main

Tuner

SD0

SPDIF

ECHO

Canceller

GPS

Module

I2S

SPDIF

A

U1354

(800 MHz)

USB

I2C

UART

I

2

C

I

2

S

Echo Canceller

I

2

S1

I

2

S

I-POD

Protector

CAN

CAN

CAN

UART0

Sub

Tuner

UART1

AIN

Debug

D+/D-

I2C2

CD Deck

I2C

Local Bus

4 CH UART

Controller

Video In

Micom

ADC

GPIO

UART3

Transceiver

NOR Flash

Video

Decoder

PGS (rear camera video)

Bluetooth

Echo

Canceller

PCM

KEY

AUX video input

MIC

Video Decoder

AU1354

(UART 3)

Button key

Front Board

Module

MICOM

(TW8816)

7.0” LCD Panel

Touch Panel

Button key

RGB666

IFAD

AIN

SPDIF

SECTION 4. EXPLODED VIEWS

[CONTENTS]

• FRONT PART . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

• CABINET AND MAIN FRAME PART . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3