133803662-LC22LE420M-pdf.pdf

SERVICE MANUAL LCD COLOUR TELEVISION

MODEL

LC-22LE420M

In the interests of user-safety(Required by safety regulations in some countries) the set should be restored to its original condition and only parts identical to t hose specified should be used.

CONTENTS

CHAPTER 1. SPECIFICATION SPECIFICATIONS………….….…………… S………….….………………………………………… ……………………………………….1 ………….1

CHAPTER 2. REMOVING OF MAJOR PARTS…………..……………………………………….3

CHAPTER 3. ADJUSTMENT PROCEDURE……………..……………………………………….7

CHAPTER 4. TROUBLESHOOTING TABLE………...…….……………………………...…….18 TABLE………...…….……………………………...…….18

CHAPTER 5. MAJOR IC INFORMATIONS… INFORMATIONS……….....….........……………… …….....….........…………………………...……..35 …………...……..35

CHAPTER 6. BLOCK DIAGRAM/ WIRING DIAGRAM……..…….……………………..… DIAGRAM……..…….……………………..……..46 …..46

CHAPTER 7. PRINTED W IRING DIAGRAM…..…………...……………………………………49 DIAGRAM…..…………...……………………………………49

CHAPTER 8. SCHEMATIC DIAGRAM………..………………..………………………...………5 DIAGRAM………..………………..………………………...………53 3

CHAPTER 9. EXPLODED PARTS & PARTS GUIDE

……….……..………………………66 ……….……..… ……………………66

Parts marked with " " are are important important for maintaining maintaining the safety of the set. Be Be sure to replace replace these these parts with specified ones for maintaining the safety and performance of the set.

This document has been published to be used for after sales service only. The contents are subject to change without notice.

CHAPTER 1. SPECIFICATIONS [1] SPECIFICATIONS Item

Model: LC-22LE420M

LCD screen size

21.5”

Resolution

2,073,600 pixels(1920x1080)

TV-standard TV function

PAL: B/G, D/K, I SECAM: B/G, D/ K, K/K1 NTSC: M

Receiving

VHF/UHF

44.25 — 863.25 MHz

channel

CATV

S1 — S41ch (including Hyperband)

TV-Tuning System STEREO/BILINGUAL

Audio out

Auto Preset 99 ch NICAM: B/G, I, D/K A2 stereo: B/G

3W*2 ANT./CABLE

16ohm

UHF/VHF 75 ohm DIN type HDMI in with HDCP (480I, 576I, 480P, 576P, 720P/50Hz, 720P/60Hz, 1080I/50Hz,

INPUT2 1080I/60Hz, 1080P/50Hz, 1080P/60Hz, 1080P/24Hz) AUDIO in , COMPONENT in (480I, 576I, 576I, 480P, 576P, 720P/50Hz, 720P/60Hz,1080I/ 720P/60Hz,1080I/

Rear

INPUT3 50Hz,1080I/60Hz)

Terminal

OUTPUT

VIDEO out, AUDIO out

INPUT5 PC IN

Analog RGB (PC) in (15-pin mini D-sub female connector)

Audio IN PC/HDMI PC/HDMI

Audio in (Ø 3.5mm jack)

Headphone out

Headphone out HDMI in with HDCP (480I, 576I, 480P, 576P, 720P/50Hz, 720P/60Hz, 1080I/50Hz,

Side

INPUT1 1080I/60Hz, 1080P/50Hz, 1080P/60Hz, 1080P/24Hz)

INPUT4

VIDEO in, AUDIO in

USB

Photo/Music/Video mode, Software update

English, Portuguese, Russian, Arabian, Persian, Thailand,

OSD language

Indonesian, Vietnamese, French, Chinese(simplified)

Power Requirement Requirement

AC 110V ~240V / 50/60 Hz

Power Consumption

35W(1W Standby) Standby)

TV + stand

5.4kg

TV only

4.8 kg

Dimension

TV + stand

532.8/383.9/187.9mm

(W/H/D)

TV only

532.8/350.3/44.2mm

Weight

Operating Temperature

0°C — 45°C

[2] [2 ] DIMENSIONS and VESA wall mount

1

2

CHAPTER 2. Removing of Major Parts Step 1. Remove the BASE ASSY, after loose 4 screws,

Step 2. Remove AC COVER, after loose 10 screws,

Step 3. Remove BACK COVER, after loose 1 screw,

.

3

Step 4. Remove LVDS CABLE and SPEAKER, after remove 2 yellow tapes and disconnect 4 connectors,

Step 5. Remove the base support and 2 top vesa, after loose 8 screws and remove 2 foils.

4

Step 6. Remove KEY ASSY/ IR BD/ IR&KEY CABLE, after loose 3 screws and disconnect 2 cables.

Step 7. Remove POWER BD and MAIN BD with EMI shielding, after loose 12 screws.

5

Step 8. Get the panel with main chassis away front bezel.

Step 9. Remove MAIN CHASSIS, after loose 4 screws at left and right side.

6

CHAPTER 3. ADJUSTMENT PROCEDURE [1]ADJUSTMENT PROCEDURE

1. Main Menu (The default value is marked in red)

Layer1

Layer2

Layer3

Video

AV mode

User

Layer4

Standard

Layer5

Remark

When Location=Home

Dynamic

When Location=Store

Movie Power Saver 0~100

Only Adaptive

Backlight

Backlight is "Off" Or in VGA

Brightness

0~100

Contrast

0~100

Saturation

0~100 In VGA, this item

Hue

-50~50

Sharpness

-10~10

Adaptive Luma

Off

Control

is hidden

On

Color

Color

User

Temperature

Temperature

Cool

When AV Mode=Dynamic

Standard

When AV Mode=Standard

Warm

Advanced Video

R Gain

0~255

G Gain

0~255

B Gain

0~255

Adaptive

Off

Backlight

On

7

VGA except

Off Low DNR

Medium Strong Auto

Flesh Tone

Off On Auto

Only enable in

Graphic

HDMI 480p, 576p,

Video

720p, 1080p

HDMI Mode

VGA

Audio

Auto Adjust H.Position

50~50

V.Position

-20~20

Phase

-20~20

Clock

-90~90

Balance

-50~50(0)

Bass

0~100(50)

Treble

0~100(50)

Surround

On/Off

Equalizer

Off /Rock/Pop/Live

VGA only

/Classic Speaker

On/Off

Audio Select

Auto/HDMI/PC

HDMI only

Line In TV

Audio Channel

Mono/Stereo/Dual

TV only

1/Dual2 Channels

Channel Scan

Color System

Auto/PAL/SECAM /NTSC

Sound System

B/G / I / D/K / M

Channel Scan

Scan All Channels. Status:Scanning …/Scan

Complete(Chann el not found)/Scan Cancel Frequency: 8

Analog Channels: Update Scan

Color System


Sound System

B/G / I / D/K / M

Channel Scan


Complete(Chann el not found)/Scan Cancel Frequency: Analog Channels: Analog Manual

Search for analog

Scan

channels Start Frequency (MHz) End Frequency (MHz) Start Search


Complete/Scan Cancel Frequency: Analog Channels: Channel Edit

Channel Number:

(Next page is

Channel Name:

Channel list)

Frequency Color System

[


Num. Type

Sound system

B/G / I / D/K / M

Finetune

ChannelNumber:

Freq.

ChannelName:

System Frequency:

Name Skip 9

On/Off

Analog

Store

Swap

Are you sure?

Insert

(Confirm dialog)

Delete ] Clean Channel

Are you sure?

List

(Confirm dialog)

OK/Cancel

Favorite Channels R G Y B All data clear

Are you sure? (Confirm dialog)

Setup

OSD Language

OK/Cancel

English

简体中文 Français ไทย Português Việt Nam Bahasa Indonesia Русский

View Mode

Normal Panorama Available options

Full

depend on input

Zoom

timing.

Underscan Cinema Dot by Dot Time Setup

Time

Date Time Power On Timer

Off /On/Once

Timer Power Off Timer

10

Off /On/Once

Timer Sleep Timer

Off 10 Minutes 20 Minutes 30 Minutes 40 Minutes 50 Minutes 60 Minutes 90 Minutes 120 Minutes

Auto Sleep

Off 1 Hour 2 Hours 5 Hours

DivX(R)Registrati You must register on

your device to play DivX protected videos. Registration Code:532J7VZU DF Register at http://vod.divx.co m

DivX(R)

Deregistration

You must register

Deregistration

code:5DCF8NHI

your device to

Deregister at

play DivX

http://vod.divx.co protected videos. m

Registration

Continue with

Code:532J7VZU

registration?

DF Register at

(OK/Cancel)

http://vod.divx.co m (OK)

Teletext

Decoding Page

WEST EUR

Language

Arab

11

Farsian Location

Home Store

Version Info

Model Name: Version: Release Date:

Reset Default Parental


OK/Cancel

Password Channel Block

Analog

Block/UnBlock

Input Block

TV

Block/UnBlock

INPUT1 HDMI1

Block/UnBlock

INPUT2 HDMI2

Block/UnBlock

INPUT3 COMP

Block/UnBlock

INPUT4 AV

Block/UnBlock

INPUT5 PC IN

Block/UnBlock

New Password Change Password

Confirm Password

Clean All


OK/Cancel

2. Display adjustment Only adjust HDMI Mode and copy to all of input source General set-up: Equipment Requirements: Minolta CA-210 or Equivalent Color analyzer or equivalent instrument.

Input Signal Type: 1. Internal full white pattern. 2. Select Picture mode to Standard mode and check the x, y data. Input Injection Point: HDMI cable

Alignment method: Initial Set-up: 1. Select source as “INPUT1 HDMI1”. 12

2. Set Picture mode as “Standard”. 3. Enter factory mode menu: press MENU + Numeric keys “3481” . Alignment: 1. Press “Menu” key enter factory mode page. 2. Set VideoWhite Pattern to “Medium”. 3. Enter VideoColor Temperature adjust.

Color temperature adjust: 1.

Set color temperature to “Cool”

2.

Adjust R Gain/G Gain values to meet “Cool” color coordinates.(Keep B Gain set “128”)

3.

Adjust R Offset/G Offset values to meet “Cool” color coordinates.(Keep B Offset set “128”)

4.

Repeat step 2, 3, 4 twice to meet “Cool” color coordinates specification below.

5.

Set color temperature to “Warm”、”Standard” then Repeat 2,3,4 step adjusting.

6.

Set color temperature “User ” mode then set all values to “128”

Mode

Chromaticity Coordinate x

y

0.272 ± 0.01

0.277 ± 0.01

STANDARD

0.285 ± 0.01

0.293 ± 0.01

WARM

0.313 ± 0.01

0.323 ± 0.01

COOL

Customer Color

Panel Native Color Temperature

Check the 16 grayscale pattern should be distinguished and color bar is correct Reset AV setting in OSD menu, picture mode shall be recalled to be “Standard” mode.

Note: 1. After the main board or LCD panel is replaced, need to perform Display adjustment. 2. Use Minolta CA-210 for color coordinates and luminance check. 3. Before adjusting, all colour analyzers (CA-210) should be coordinates with a same reference TV set. 4. Luminance > =200 cd/m2 (LC-22LE420M) in the center of the screen when Brightness control at 50, Contrast control at 100, Backlight control at 100.

[2] SERVICE MODE Enter factory mode menu: press MENU + Numeric keys “3481” to enter factory mode.

13

You can press “RETURN” key to back to normal main menu.

[3] SOFTWARE UPGRADE PROCEDURE 1. Connect to TV USB port to upgrade the software firmware Please follow the following steps to upgrade the firmware. I.

Turn on TV.

II.

Press Menu, select SetupVersion info to check "Version"

III.

Copy the correct software firmware (*.pkg) to USB disk. Ex: Version: VG224G_PA_ V2.00, copy VG224G.pkg to USB disk.

IV.

Insert the USB disk to TV USB port.

V.

TV AC power off -> AC power on

VI.

V. TV will upgrade by itself after detect the USB disk condition and the content of the pkg file.

Note: TV's LED will flash during upgrade process VII.

After finish upgrade process, TV will reboot by itself.

VIII. Remove USB disk from TV. IX.

Press Menu, select SetupVersion info.

X. Check the software version is correct or not.

14

[4] Remote control function

Function Testing Remote control unit

1. POWER Switch the power on or enters standby mode. 2. 0-9 Set the channel. TELETEXT mode: Set the page. 3. INPUT Select a TV input source. 4. SLEEP Allows you to set a time when the TV automatically switches to standby. This display will disappear after a few seconds, and the sleep timer automatically starts counting down. If you want to adjust the sleep timer, you can press SLEEP twice then change th e time setting. The sleep tim er you can select from Off, 10minutes, 20minutes, 30minutes, 40minutes, 50minutes, 60minutes, 90minutes or 120minutes. 5. AV MODE Select an adjusted picture setting. (Standard, Dynamic, Movie, Power Saver, User) 6. FREEZE Set the still image. Press again to return to normal screen. 7. CH▲/▼ Select the channel. (CH▲) Increase the channel number. (CH▼) Decrease the channel number. TELETEXT mode: Select the page. 8. MENU Display the menu screen. 9. DISPLAY Display the current channel (or i nput source) information on the screen. 10. ▲/▼ ◄/► ENTER Select a desired item on the screen. 11. RETURN Return to the previous m enu screen. 12. R G Y B (Red/Green/Yellow/Blue) Select 4 preset favorite channels in 4 different categories. While watching, you can toggle the selected channels by pressing R, G, Y and B.

15

TELETEXT mode: Select a page. 13. Only for USB using. Stop Fast rewind Fast forward Pause Play 14. USB Direct switch to USB source. 15.

(Mute)

Press

→ Mutes sound.

Press again →Restores sound. Mute will be canceled if you press VOL+/-. 16. (Flashback) Press to return to the previous selected channel or external input mode. 17. TV Direct switch to TV source. 18. PC Direct switch to PC source. 19. VOL+/Set the volume. (VOL+) Increase the volume. (VOL-) Decrease the volume. 20. VIEW MODE Select the Picture Mode. 21. SURROUND Switch the surround setting. Each tim e you press SURROUND, the mode changes between On and Off. You can change the surround setting in Audio menu. 22. MPX Select the sound multiplex mode. 23. EXIT Turn off the m enu screen. 24.

(TELETEXT) Select the TELETEXT mode. ( all TV image, all TEXT image, TV/TEXT image) (Reveal hidden for TELETEXT) TELETEXT mode: Display hidden characters. (SUBTITLE for TELETEXT) Turn the subtitles on. (Hold) TELETEXT mode: Stop updating Teletext pages aut omatically.Press mode.

again to release the hold

(Subpage) Display the Teletext subpage directly when in Teletext mode. (Top/Bottom/Full) TELETEXT mode: Set the area of magnification.

[5] Factory Reset Factory Reset function allows a TV t o restore factory settings. Follow below instructions to do Factory Reset. 1.

Press MENU + Numeric keys “3481” to enter factory mode, and then the factory mode menu is displayed.

16

2.

Press ▲/▼ to select Setup, and then press ► to enter.

3.

Press ▲/▼ to select Factory Reset, and then press ► to enter.

4.

Press ENTER, then the TV do Factory Reset automatically.

17

CHAPTER 4.TROUBLESHOOTING TABLE [1]TROUBLE SHOOTING TABLE The sound is not emitted from the speaker though the picture has c ome out.

No sound output in all modes? Yes:

Is the audio signal output of pin (210) (AOSDATA0), pin (208) (AOBCK), pin

NO

Check IC U2101 and its peripheral circuits.

(211) (AOLRCK) and pin (209) (AOMCLK) of IC U2101 normal? YES

Is audio signal input to pin (12) (AOSDATA0), pin (16) (AOBCLK), pin (15)

NO

(AOLRCK) and pin (4) (AOMCLK) of IC

Check the line between IC U2101 and IC U6103

U6103 (AMP) normal? YES NO Is MUTE circuit [PD#] normal?

Check the PD#. (Q6103, Q6106, ZD6101, etc.)

YES

Is the audio signal output of pin (3, 4) (L-ch) and pin (1, 2) (R-ch) of CN6101

NO Check IC U6101 and its peripheral circuits.

(AOUDIO-CONNECTOR) normal? YES

Check Speaker Box (right and left) and wire harness.

18

No sound (during the reception of TV broadcasting)

Does not the sound go out though the picture has come out when UHF/VHF is r eceived?

Is the DIF signal output from pin (10) and pin (11) of TUNER

NO

Check the tuner and its peripheral circuits. Replace as required.

(TU1301) normal?

YES NO Is the DIF signal sent to pin (184) and pin (185) of IC U2101

Check IC U2101 its peripheral circuits.

normal?

YES Refer to “No sound output in all modes ”.

19

No sound from external input devices (YPbPr)

Does not the sound of the audio signal input to (YPbPr) go out?

Is the audio signal properly sent to pin (8) and pin (10) of

NO

Check the connection to CN1105 and the external input device.

CN1203 ?

YES

Is the audio signal properly sent to pin (3)

NO Check the line between CN1105 and IC U6203

(IN2a) and pin (7) (IN2b) of IC U6203? YES


NO

(AIN0_L) and pin (194) (AIN3_R) of IC

Check the line between U6203 and IC U2101

U2101? YES

Refer to “No sound output in all modes ”.

20

No No sound sound from from external external input input devices devices ( VGA) (3)

Does the the sound of the audio signal inputsignal to VGA go out? to Doesnotnot sound of the audio input

input7 (Composite) go out?

MAIN UNIT: Is the audio signal properly sent to pin (3) (4) and pin (2) of

NO

Check the connection to CN4104 CN1104 and the external input device.

CN1104? CN4104?

YES

YE NO


Check the line between CN4104 CN1104 and IC U6203. U2101.

(IN1a) and pin (6) (IN1b) of IC U6203?

YES NO

Is the audio signal properly sent to pin (196) Check the line between U6203 and IC U2101

(AIN0_L) and pin (194) (AIN0_R) of IC U2101? YES


21

No sound from external input devices input4 ( AV INPUT)

Does not the sound of the audio signal input to (AV input) go out?

Is the audio signal properly sent to pin (3) and pin (6) of

NO

Check the connection to CN1201 and the external input device.

CN1201 ?

YES


NO Check the line between CN1201 and IC U6203

(IN2a) and pin (7) (IN2b) of IC U6203? YES


NO

(AIN0_L) and pin (194) (AIN3_R) of IC IC

Check the line between U6203 and IC U2101

U2101? YES


22

No sound from external input devices ( USB)

Does not the sound of the audio signal input to USB go out?

YES NO Is USB stick audio format correct?

Change to correct mp3 format

YES NO Is the USB +5V Q7104 sent to pin (1) of CN1103?

Check the connection to Q7104 and the external input device.

YES Is the USB con (CN1103) signal properly sent to pin (109)

NO

(USB_DM) and pin (110) (USB DP) of IC U2101?

YES Refer to “No sound output in all modes ”.

23

Check the line between CN1103 and IC 2101

The audio signal is not output(headphone)

No audio signal output from Headphone terminal (CN6202).

No Is audio signal output properly from pin (12) (OUT_L) and pin

Check the connection to CN6202 and external devices.

(3) (OUT_R) of IC U6201 to Jack (CN6202)?

YES

Is the audio signal output properly from IC U2101 pin (201)

No Check the line between IC U2101 and IC U6202.

(AL1O) and pin (203) (AR1O) to pin (13) (INL) and pin (6) (INR) of IC U6201

YES Check IC2101 and its peripheral circuits.

.

24

The audio signal is not output(AV out)

No audio signal output from AV out terminal (CN1202).

Is audio signal output properly from pin (12) (OUT_L) and pin

No Check the connection to CN1202 and external devices.

(3) (OUT_R) of IC U6201 to Jack (CN1202)?

YES Is the audio signal output properly from IC U2101 pin (200)

No

(AL0) and pin (202) (AR0) sent to U6201 pin(2) (INR) and Check the line between IC U2101 and U6201 pin(13) (INL)?

YES

Check IC U2101 and its peripheral circuits.

25

No picture on the display (1)

The picture doesn't appear in all modes.

Main UNIT: Is LVDS signal output IC U2101 in each mode? (O0N/O0p),(O1N/O1P),(O2N/O2P),(O3N/O3P),(OCKN/OCKP), (E0N/E0p), (E1N/E1P), (E2N/E2P), (E3N/E3P), (ECKN/ECKP)

NO YES

Check IC U2101 and its peripheral control circuits.

NO Check the line between IC U 2101 and CN4101

Is the above-mentioned LVDS signals output to connector CN4101 ?

YES Control signals Backlight_ON , PSON, and it peels off

NO YES

and whether normality is checked.

Is LCD controller's control signal normal?

YES

Similarly, is t he LVDS signal input to connector of the

NO Wire harness is checked.

panel module?

YES

Check the panel module.

26

No picture on the display (TV)

Does not the picture come out when VHF/UHF is received?

Main UNIT: Is the voltage of regulation for a TUNER circuit and the power

NO

Each power supply circuit is checked.

NO

Check the tuner and its peripheral circuits. Replace

supply terminal of IC U2101 supplied?

YES Is the DIF signal output from pin (10) and pin (11) of TUNER (TU1301)?

as required.

YES Is the DIF signal sent to pin (184) and pin (185) of IC U2101?

NO

YES Refer to “The picture doesn't appear in all modes. ”

27

Check IC U2101 its peripheral circuits.

No picture on the display (AV)

Does not the picture of the AV video signal input to Input4(AV)?

Terminal

YES

Is AV signal sent to pin (2) of AV (CN1201) ?

Check the setting of an external input d evice that

NO

connects of CN1201

Main UNIT:

YES

Is AV signal sent to pin (181) of IC U2101?

NO

Check the line between IC U 2101 and CN1201.

YES Refer to “The picture doesn't appear in all modes.” ?

28

No picture on the display

Does not the picture of the HDMI signal input to Input1 (HDMI1)?

Terminal Is the HOT_PLUG detection function of pin (19) of

NO

Check the line between pin (16) of IC U8103 and CN8102.

a HDMI terminal (CN8102) normal?

YES Check the connection and setup with the

Main UNIT: Is TMDS signal input into pin

external HDMI devices.

(33, 32) RX1_2/ RX1_2B, (30,29 )RX1_1 /RX1_1B,

NO


(28,27)/RX1_0/RX1_0B (24, 25)/RX1_C/ RX1_CB of IC U1205?


29


Does not the picture of the HDMI signal input to Input2 (HDMI)?

Terminal Is the HOT_PLUG detection function of pin (19) of

NO

Check the line between pin (1) of IC U8103 and CN8103.

a HDMI terminal (CN8103) normal?

YES Check the connection and setup with the Is TMDS signal input into pin

external HDMI devices.

(12 .11) RX3_2 / RX3_2B, (10,9 ) RX3_1 / RX3_1B,

NO

(8,7) RX3_0/ RX3_0B (6, 5) RX3_C/ RX3_CB

of

IC U1205?


30

Check the line between IC U8103 and CN8103.


Does not the sound of the video signal input to USB go out?

Is USB stick video format correct?

NO

Change to correct . JPG/MP3/MPEG-2 format.

NO

Check the CN1103 and the external input device.

YES Is the USB +5V sent to pin (1) of CN1103?

YES Is the USB con (CN1103) signal properly sent to

NO

pin (109) (USB_DM) and pin (110) (USB_DP) of IC U2101?


31

Check the line between CN1103 and IC U2101.


Does not the picture of the component video signal input to Component?

Terminal Is Component Y/Pb/Pr signal sent to pin (2)/Y,

NO

(4)/Pb, (6)/Pr of CN1203 ?

Main UNIT:

Check the setting of an external input device that connects of CN1203

YES

Is Component Y/Pb/Pr signal sent to pin (163)/Y,

NO

(165)/Pb, (166)/Pr of IC U2101?

YES

Refer to “The picture doesn't appear in all modes. ”

32

Check the line between IC U2101 and CN1203.


Does not the picture of the VGA signal input to D-SUB go out?

Is Video format correct?

Terminal

NO

Set the timing which TV is s upport

NO

Check the setting of an external input device that

YES

Is R/G/B/H/V signal sent to pin (1)/R, (2)/G, (3)/B, (14)/H, (13)/V of VGA (CN1102)?

connects of CN1102

YES

Main UNIT: Is R/G/B/H/V signal sent to pin (156)/R, (154)/G,

NO

(152)/B, (150)/H, (149)/V of IC U2 101?


33


34

CHAPTER 5. MAJOR IC INFORMATIONS [1]MAJOR IC INFORMATIONS 1.1. U2101 (MT5301B) GENERAL DESCRI PTION The MediaTek MT5301B f amily is a backend decoder and a TV controller and offers high integration for advanced applications. It combines a high definition video decoder, an

audio decoder, a dual-link LVDS/mini-LVDS transmitter, and an NTSC/PAL/SECAM TV decoder with a 3D comb filter (NTSC/PAL). The MT5301B enables consumer electronics manufactures to build high quality, low cost and feature-rich DTV. World-Leading Audio/Video Technology: The MT5301B supports Full-HD MPEG1/2/4/DiviX/VC1/RM/H.264/AVS video decoder standards, and JPEG. The MT5301B also supports MediaTek MDDiTM de-interlace solution can reach very smooth picture quality for motions. A 3D comb filter added to the TV decoder recovers great details for still pictures. The special color processing technology provides natural, deep colors and true studio quality video.Also, the MT5301B family has built-in high resolution and high-quality audio codec. Rich Features for High Value Products: The MT5301B family enables true single-chip experience. It integrates high-quality HDMI1.3 (partial HDMI1.4), high speed VGA ADC, dualchannel LVDS, USB2.0 receiver, , TCON and panel overdrive. Key Features: 1. Worldwide multi-standard analog TV demodulator 2. A muti-standard video decoder 3. An audio decoder 4. HDMI1.3 receiver (cover HDMI1.4 partial Spec) HDMI 1.4

Ethernet

3D over

Spec.

Channel

HDMI

4Kx2K

Audio

Additional

Return

Color Space

Channel Optional

Yes

No

5. Audio codec 6. TCON 7. Panel overdrive control 8. Local dimming GENERAL FEATURE LIST Host CPU  ARM1176JZS  14K Boot ROM

35

Yes

Yes

 JTAG ICE interface  Watch Dog timers

Transport Demultiplexer  Support DES / 3-DES / DVB / AES / de-scramblers  Up to 8 even/odd keys for d escrambling  Supports 32 PID filters and 32 section filters  Supports 32 PID filters for recording  Supports hardware CRC-32 check  Supports PCR recovery function  Supports a micro-processor for stream process and video start code detection

MPEG2 Decoder  MPEG MP@ML, MP@HL  Supports de-blocking filter

MPEG1 Decoder MPEG4 Decoder  ASP@L5

H.264 (MPEG4.10) HD Decoder (AVC)  [email protected], [email protected], constrained BP@L3 video standard

VC-1 (SMPTE421M)  MP@HL, AP@L3(Partial Support, support up to 1920x1080)  WMV9 decoder MP@HL

DivX (XviD) Decoder  DIVX3 / DIVX4 / DIVX5 / DIVX6 / DIVX HD

AVS Decoder  Jizhun profile @Level 6.0.1

RMVB Decoder  RealVideo8/9/10

Soreson H.263 Still Image decoding  JPEG (base-line or progressive)

De-mosquito engine  2D/3D for all AV inputs

2D Graphics  Supports multiple color modes  Point, horizontal/vertical line primitive drawings  Rectangle fill and gradient fill functions  Bitblt with transparent options  Alpha blending and optional pre-multiplied alpha composition Bitblt

36

 Stretch Bitblt  YCbCr to RGB color space conversion  Support index to direct mode bitblt

Image Resizer  Supports 16bpp/32bpp direct color format.  Supports 420/422 video format.  Supports 420/422/444 JPEG format.  Arbitrary ratio vertical/horizontal scaling of video, from 1/128X to 128X  Simple DMA.

OSD Plane  Three linking list OSDs with multiple color mode and two of them has up-scaler

Video Plane  Supports video freeze and over scan.  Flesh tone management  Gamma correction  Color Transient Improvement (CTI)  2D Peaking  Saturation/hue adjustment  Brightness and contrast adjustment  Black and White level extender  Adaptive Luma management  Automatic detect video, film and mixed-mode source  3:2/2:2 pull down source detection  Supports FHD motion-adaptive de-interlace in 32bit dram interface  Supports excellent l ow angle image processing  Brilliant boundary shaping for moving object  Advanced non-linear panorama scaling.  Programmable zoom viewer  Progressive scan output  Supports alpha blending for OSD on video plane.  Dithering processing for flat panel display  Frame rate conversion.  Supports FHD panel and VGA dot-to-dot  Supports PIP/POP, (dual de-interlace, one HD and one SD)

OD  Support 60Hz Full-HD and WXGA panel over drive.

TCON  Flexible timing control with programmable timing

37

i. Horizontal timing control ii. Vertical timing control iii. Multi-line timing control iv. Multi-frame timing control  Support gate power modulation timing  Support 1/2/4/8 frame inversion, 1-line inversion, 2-line in version, and could up to 255-line dot inversion

Local Dimming  Block division: up to 800 total blocks, up to 100 horizontal blocks  Support 50K ~ 50M SPI clock rate

LVDS  Support 6/8/10/12-bit one-link, or 6/8/10-bit dual-link LVDS transmitter,  Built-in spread spectrum for EMI performance  Programmable panel timing output

Mini-LVDS  Single port 6/8-bit 6 p airs mini-LVDS output for WXGA 60Hz panel  Single port 6/8-bit 3 p airs mini-LVDS output for WXGA 60Hz panel  Dual port 6/8-bit 3 p airs mini-LVDS output for WXGA 60Hz panel  Single port 8bit 6 p airs mini-LVDS output for FHD 60Hz panel  Dual port 8 bit 6 pair mini-LVDS output for FHD 60Hz panel  Dual port 8bit 3 p airs mini-LVDS output for FHD 60Hz panel

CVBS In  On-chip 54 MHz 10-bit video ADC  Supports PAL (B,G,D,H,M,N,I,Nc), NTSC, NTSC-4.43, SECAM  NTSC/PAL supports 3D/2D comb filter  Built-in motion-adaptive 3D Noise Reduction  VBI data slicer for CC/TT decoding  Supports 2 S-Video.  MT5301B support 2-channel CVBS.  Supports SCART connector

VGA In  Supports VGA input up to UXGA 162 MHz  Supports full VESA standards

Component Video In  Supports two component video inputs  Supports 480i / 480p / 576i / 576p / 720p / 1080i / 1080p

Audio ADC  MT5301B support 1-pair L/R input

Audio digital input

38

 MT5301B support 2 bit (4 channel) I 2S audio input (muxed with GPIO).

HDMI Receiver  One channel HDMI1.4

v. Maximum data rate can b e up to 3.3 GHz vi. Support 3D video format vii. Audio Return channel  EIA/CEA-861B  CEC

Video bypass  TV bypass  CVBS Monitor (any AV input)

TV audio demodulator  Supports BTSC / EIA-J / A2 / NICAM / PAL FM / SECAM world-wide formats  Standard automatic detection  Stereo demodulation, SAP demodulation  Mode selection (Main/SAP/Stereo)

Audio DAC  MT5301B support 2-pair audio DACs

DRAM Controller  16bit DDR2/DDR3 interface,  MT5301B Support DDR2 1026 MHz, DDR3 1188MHz.  Supports 512Mb or 1 Gb DDR2 DRAM device and 1Gb or 2Gb DDR3 device. MT5301B has 16-bit data

bus offers up to 256MB space (one x16 DRAM device).  Supports DDR2-800/DDR2-1066/DDR3-1333/DDR3-1600 device

Audio DSP  MPEG-1 layer I/II d ecoding  Support WMA / HE-AAC  Audio output: 5.1ch + 2ch (down mix) + 2ch(bypass)  Pink noise and white noise generator  Equalizer  Bass management  3D surround processing with virtual surround  Audio and video lip synchronization  Supports bass/treble  Automatic volume control  MT5301B support 2-bit (4-channel) main audio I2S output interface: each of these channels is up to 24-bit

resolution.

39

S/PDIF interface  Support SPDIF in bypass  One SPDIF out

Analog TV IF Demodulator  Supports world-wide analog TV standard  Accept Low IF frequency  Full digital AGC control and carrier recovery  Embedded SAW filter and IF Amplifier. Cost effective TV f ront-end structure and no more costs on

viii. External analog SAW filters (Video/Audio) ix. External analog IF demodulator x. Extra peripheral circuit on CVBS signal data path xi. External SAW filter and IF VGA on tuner

Peripherals  MT5301B support two built-in UARTs with Tx and Rx FIFO.(one i s muxed with GPIO).  Seven basic serial interfaces; one is for the tuner, on e is the master for general purpose, and one is the

slave for VGA DDC, the other four extra slave serial interfaces used for HDMI EDID data (t hree are muxed with GPIO).  MT5301B support two PWMs (one is muxed with GPIO).  IR receiver  Real-time clock and watchdog controller  Built-in 2-link USB2.0/1.1, USB port0 supports external hub,  Built-in uP for standby mode  Support SDIO interface pin muxed  Supports two serial flash or one serial  MT5301B support five-input low-speed ADC.  Supports boundary scan ( JTAG)

IC Outline  MT5301B is 256-pin LQFP package with EPAD  3.3V/1.12V/1.2V and 1.8V for DDR2 or 1.5V for DDR3

1.2. U3103 (W971GG6JB-25 1G WBGA-84) Description The W971GG6JB is a 1G bits DDR2 SDRAM, organized as 8,388,608 words  8 banks  16 bits. This device achieves high speed transfer rates up to 1066Mb/sec/pin (DDR2-1066) for general applications. W971GG6JB is sorted into the following speed grades: -18, -25 and -3. The -18 is compliant to the DDR2-1066/CL7 specification, the -25 i s compliant to the DDR2-800/CL6 specification, the -3 is compliant to the DDR2-667/CL5 specification.

40

All of the control and address inputs are synchronized with a pair of externally supplied differential clocks. Inputs are latched at the cross point of differential clocks (CLK rising and CLK falling). All I/Os are synchronized with a single ended DQS or differential DQS- DQS pair in a source synchronous fashion.

Features _ Power Supply: VDD, VDDQ = 1.8 V ± 0.1 V

_ Double Data Rate architecture: two data transfers per clock cycle _ CAS Latency: 3, 4, 5, 6 and 7 _ Burst Length: 4 and 8 _

Bi-directional, differential data strobes (DQS andDQS ) are transmitted / received with data

_

Edge-aligned with Read data and center-aligned with Write data

_

DLL aligns DQ and DQS transitions with clock

_

Differential clock inputs (CLK and CLK )

_

Data masks (DM) for write data

_

Commands entered on each positive CLK edge, data and data mask are referenced to both

edges of DQS _

Posted CAS programmable additive latency supported to make command and data bus efficiency

_

Read Latency = Additive Latency plus CAS Latency (RL = AL + CL)

_

Off-Chip-Driver impedance adjustment (OCD) and On-Die-Termination (ODT) for better signal

quality Auto-precharge operation for read and write bursts

_

Auto Refresh and Self Refresh modes

_ _

Precharged Power Down and Active Power Down

_

Write Data Mask

_

Write Latency = Read Latency - 1 (WL = RL - 1)

_

Interface: SSTL_18

_

Packaged in WBGA 84 Ball (8X12.5 mm 2), using Lead free materials with RoHS compliant

1.3. U6101 (AD82581-LE48NAY LQFP48) Description AD82581 is a digital audio amplifier capable of driving a pair of 8 Ω,10W or a single 4Ω,20W speaker, both which operate at a 24V supply without external heat-sink or fan requirement. Using I2C digital control interface, the user can control AD82581 ’s input format selection, mute and volume control functions. AD82581 has many built-in protection circuits to safeguard AD82581 from connection errors.

Features 16/18/20/24-bit input with I 2S, Left-alignment

and Right-alignment data format

41

PSNR & DR (A-weighting)

Loudspeaker: 97dB (PSNR), 105dB (DR) @24V Multiple sampling frequencies (Fs)

32kHz / 44.1kHz / 48kHz and 64kHz / 88.2kHz / 96kHz and 128kHz/176.4kHz/192kHz System clock = 64x, 128x, 256x, 384x, 512x, 768x,

1024x Fs 256x~1024x Fs for 32kHz / 44.1kHz / 48kHz 128x~512x Fs for 64kHz / 88.2kHz / 96kHz 64x~256x Fs f or 128kHz/176.4kHz/192kHz Supply voltage

3.3V for digital circuit 12V~24V for loudspeaker driver Loudspeaker output power for 24V

10W x 2CH into 8Ω @0.27% THD+N for stereo 12W x 2CH into 8Ω @0.3% THD+N for stereo 15W x 1CH into 4Ω @0.2% THD+N for mono 20W x 1CH into 4Ω @0.25% THD+N for mono  Anti-pop design Over-temperature protection Internal PLL Under-voltage shutdown Over-current protection

Applications · CD and DVD · TV audio · Car audio · Boom-box · MP3 docking systems · Powered speaker · Wireless audio · USB speaker 1.4. U8103(IT6633) Features

The IT6633 is a three-to-one HDMI v.1.3 active switch that supports a signalling rate of up to 2.25Gbps and the new Deep Color modes. A one-port SINK systems such as flat-panel TVs or LCD projectors could also easily upgrade to three-port by

42

adding an IT6633 at the front. The IT6633 operates in software mode that allows the system to control it via a two-line serial interface, PCSCL/PCSDA. The IT6633 offers two selectable serial programming addresses by PCADR0. As a active switch, the IT6633 equalizes incoming TMDS data with optimal quality regardless of the incoming signal quality. The highly acclaimed equalization technology of ITE TECH. INC. provides for support of long o r low-quality HDMI cables at even the highest speeds. Input terminations of theTMDS inputs and output current levels are both programmable. In addition, the input terminations are disconnectable and hence significantly lower the system power consumption in inactive modes. The IT6633 embeds an EDID RAM to save the cost of the Three external EDID ROMs. The process of downloading the EDID data into the RAM is simplified by the automatic read-back capability of the IT6633, minimizing the need of MCU intervention. The IT6633 also embeds three 1K-ohm resisters for HPD signal paths to save external resisters and easy to implement the plug authentication. The IT6633 also incorporates I2C repeater in its DDC switches, which isolates the DDC capacitances of the two sides of the switch. This allows for longer cable cascading as well as significantly eases the system design to pass Test ID 8-9: DDC/CEC Line Capacitance and Voltage of the HDMI Compliance Test.

The IT6633 also distinguish itself from its peers in that it offers 8kV of Human Body Mode ESD protection to all TMDS high-speed input pins. This saves significant costs in external high-speed ESD diodes, which could be very expensive . Features 

HDMI active switch, providing superior performance over traditional passive switches



Compliant with HDMI 1.3 and DVI 1.0 standards



Serial data rate at up to 2.25Gbps, capable of supporting the following digital video formats in Deep Color Mode at up to 36 bits (12 bits/color):  DTV resolutions: 480i, 576i, 480p, 576p, 720p, 1080i to 1080p  PC resolutions: VGA, SVGA, XGA, SXGA to UXGA



Single 3.3V operation



Internal AC-coupling at TMDS inputs to cope with uneven intra-pair DC levels of incoming TMDS signals.



Embedded EDID RAM saves external EDID ROM costs



Embedded HDP resistors



Integrated HPD switches



Active port detection by monitoring PWR5V inputs and TMDS input clock.



DDC I2C repeater isolates backend DDC capacitive loading from frontend,

43

enhancing the DDC operation compatibility 

Human Body Mode ESD protection up to 8kV for all TMDS differential input pins



Disconnectable input terminations with auto-calibrated impedances



Adaptive input equalization supporting long and short cables at the same time



Software-mode operation providing flexibility



Two possible serial programming device address..



Programmable TMDS output current level



Programmable source terminations compliant with HDMI 1.3 standard, providing optimal source



data eyes at high speeds



High-impedance TMDS output when disabled



Optional backend receiver termination detection for auto powerdown



64-Pin LQFP package



RoHS Compliant ( 100% Green available )

1.5. U6202 (DRV632)

DESCRIPTION The DRV632 is a 2-V RMS pop-free stereo line driver designed to allow the removal of the output dc-blocking capacitors for reduced component count and cost. The device is ideal for single-supply electronics where size and cost are critical design parameters Designed using TI’s patented DirectPath™ technology, The DRV632 is capable of driving 2 VRMS into a 10-kΩ load with 3.3-V supply voltage. The device has differential inputs and uses external gain-setting resistors to support a gain range of ±1 V/V to ±10 V/V, and gain can be configured individually for each channel. Line outputs have ±8-kV IEC ESD protection, requiring just a simple resistor-capacitor ESD protection circuit.The DRV632 has built-in active-mute control for pop-free audio on/off control.The DRV632 has an external undervoltage detector that mutes the output when the power supply is removed, ensuring a pop-free shutdown. Using the DRV632 in audio products can reduce component count considerably compared to traditional methods of generating a 2-V RMS output. The DRV632 does not require a power supply greater than 3.3 V to generate its 5.6-V pp output, nor does it require a split-rail power supply. The DRV632 integrates its own charge pump to generate a negative supply rail that provides a clean, pop-free ground-biased 2-V RMS output. The DRV632 is available in a 14-pin TSSOP.

FEATURES DESCRIPTION • Stereo DirectPath™ Audio Line Driver– 2 Vrms Into 10 kΩ With 3.3-V Supply• Low THD+N

23

< 0.01% at 2 Vrms Into 10 kΩ• High SNR, >90 dB• 600-Ω Output Load Compliant • Adjustable Gain by External Gain-Setting Resistors• Low DC Offset, <1 mV• Ground-Referenced Outputs Eliminate DC-Blocking Capacitors

44

– Reduce Board Area – Reduce Component Cost – Improve THD+N Performance a – No Degradation of Low-Frequency Response Due to Output Capacitors• Short-Circuit Protection • Click- and Pop-Reduction Circuitry • External Undervoltage Mute • Active Mute Control for Pop-Free Audio On/Off Control• Space-Saving TSSOP Package

APPLICATIONS• Set-Top Boxes • Blu-ray Disc™, DVD Players • LCD and PDP TV • Mini/Micro Combo Systems • Sound Cards • Laptops

45

CHAPTER 6.BLOCK DIAGRAM/WIRING DIAGRAM [1]BLOCK DIAGRAM(21.5”)

[2]POWER MANAGEMENT BLOCK DIAGRAM There are 1 part circuits in Power board of this p roject (fig.1), Power circuits which is a single layer board, There are 3 output in the power parts, one is interface board including USB and TV tuner et; the other is inverter board and audio circuit.+24V output is inverter & audio part.the system block diagram as below; the last is panel Vcc, the power is 12V.

46

[3]WIRING DIAGRAM (

)

47

48

CHAPTER 7.PRINTED WIRING DIAGRAM [1]MAIN UNIT PRINTED WIRING BOARD (LC-22LE420M) TOP

49

BOTTOM

50

[2]POWER SCHEMATIC DIAGRAM- POWER BOARD WITH TOP/BOTTOM VIEW TOP Layer(

)

51

Bottom Layer (

)

[3]KEY UNIT PRINTED WIRING BOARD(LC-22LE420M)

[4] IR UNIT PRINTED WIRING BOARD (LC-22LE420M)

52

CHAPTER 8.SCHEMATIC DIAGRAM [1]MAIN SCHEMATIC DIAGRAM (LC-22LE420M) 01 MAIN POWER

53

02 MT5301B

54

03 Peripheral/ Flash.

55

04 DDR SDRAM

56

05 LVDS

57

06 AUDIO AMP

58

07 HP/ Lineout/ Audio SW

59

08 HDMI Interface

60

09 VGA/ USB/ RS232

61

10 YCbCr/ CVBS/ SPDIF

62

11 TUNER

[2]POWER SCHEMATIC DIAGRAM POWER SCHEMATIC DIAGRAM FOR( LC-22LE420M) 1. 1) AC Input and EMI Filter:(fig.3)

(fig.3)

63

CN801 is a connector for connecting AC Power. F850&F851 is fuse to protect all the circuit AC. Input voltage is from 90V to 264V. CY801, CY802, CY803 are used high frequency noise of primary between common GND. one inputting main circuit to prevent man from shock. L801, C851, is used to filter low frequency noise. R850, R851 are used to discharge .

2) MAIN POWER Control Circuit:(fig.4)

64

fig.4 U830 is a current-mode PWM controller with excellent power-saving operation, It features a high-voltage current source to directly supply the startup current from bulk capacitor and further to provide lossless startup circuit. Max start-up current f or U830 is 100uA, When current flow from the bulk capacitorC853/C854 through R832 and R833 gets to HV pin to start up U830, Meanwhile, the VCC supply current is as low as 1mA thus most of the HV current is utilized to change the VCC capacitor C856, the Vcc supply current is provided from the auxiliary winding of the transformer PIN4. INN801 detects the MOSFET current, from the CS in.When CS pin over 0.7V, t heU830 will enter auto-recovery type protection, Presenting a hiccup mode. The gate-out will not resume switching until OCP falls below 0.85V. U830 control 5V&16V output ,D856,C862,C8663,L855 are used to 5V rectifier and smooth ,for system standby function circuit .D861,C864,C863 are sued rectifier to U930 Vcc input Pin, and 16Voutput through U930 rectifier to interface board.

65

9. EXPLODED PARTS No. PARTS CODE

DESCRIPTION

EXPLODED PARTS

LC-22LE420M

1

9KD102222530H

LCP21.5"M215HGE-L10,ML5HE10901(A)(CMO)HF

2

9KD03G224G01R ASSY FRONT BEZEL,VG224G

3

9KD05G224G01R ASSY BACK COVER FOR ASEAN,VG224G

4

9KD04T264C01R ASSY KEY,VT264C

5

9KD02T264C01R ASSY BASE,VT264C

6

9KD05G224G05R ASSY IF SHIELDING FOR ASEAN,VG224G

7

9KD1X1500500R

PCBA,KP/BD,VG264C-52SP RoHS

66

8

9KD0T1600500R

PCBA,IR/BD,VG264C-52SP,ROHS

9

9KD471200500R

PCBA,IF/BD,VG224G-51SP,ROHS

10 9KDAC1400500R

PCBA,PI/BD,VG224G-51SP,ROHS

11

9KD20T464D02R AC COVER ,VT464D

12

9KD151040100R

Remote controller RC-QSHAR-520

9KD0709000B0R

PWRCORD 2.5A/250V BLK 1.6/0.08M CEE (India/ Indonesia/ Central Asia/ Malaysia)

9KD0709000A0R

PWRCORD 2.5A/250V BLK 1.6/0.2M ASTA 2P TO (Singapore/Middle East)

9KD070900090R

PWRCORD 2.5A/250V BLK 1.6/0.2M CCC 2P TO (Philippines)

13

14 9KD100300019R

SPEAKER 3W16Ω 395/415mm R/B/W W/CASE

67

15

9KD3006009V0R

HRN ASSY 6P 135MM UL1061#30

16

9KD3030046A0R

HRN ASSY LVDS 2X15P TO 30P 95mm W/LOCK

17

9KD301400820R

HRN ASSY 2X7P TO 6P/4P 440/520mm

18

9KD08T264C02R TOP VESA HOLDER,VT264C

19

9KD02T264C04R BASE SUPPORT,VT264C

20

9KD000001000R

21

9KD05G224G02R ASSY MAIN CHASSIS ASEAN-L10,VG224G

22

9KD476640900R

BOLT,#4-40x12.5,Ni ROHS

SCREW,B,CROSS,W/W-SPR,M4*42,Zn,ROHS

68

23

9KD10T421J01R

WIRE CLIP,CH-01S-V0,VT421J

24

9KD10T321H02R WIRE CLIP,CHR-05-V0,VT321H

25

9KD799001010R

ADAPTER RF JACK/ PAL PLUG (Philippines)

26

9KD416606901R

SCREW,B,CROSS,M4*6,Zn-black

27

9KD146306200R

SCREW,P,CROSS,W/WAS,M3*6,Zn-Cc

28

9KD112322100R

SCREW,P,CROSS,T.T-M3*4.5,Zn,ROHS

29

9KD018303900R

SCREW,I,CROSS,M3*3,Zn-BLK,ROHS

30

9KD112310500R

SCREW,P,CROSS,T.T-3*10,BLK-Zn

69

31 9KD016306900R

SCREW,I,CROSS,Φ5.5,T3*6,BLK-Zn

32

9KD412608500R

SCREW,B,CROSS,T.T-4*8,BLK ROHS

33

9KD212612120R

SCREW,B,CROSS,T.T-4*12,BLK ROHS

34

9KD146304200R

SCREW,P,CROSS,W/WAS,M3*4,Zn-Cc,ROHS

70

133803662-LC22LE420M-pdf.pdf

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