BBK LD1913SU, LD2213SU Service manual

L2M18 Product Specifications

LCD TV control board specification for L2M18 with 9E19/9U19 chipset

CONTENTS
No. Items
1 General description
2 Transport/storage/operation description
3 Features
4 Block diagram
5 Preset mode for VGA/YPbPr inputs
6 Interface arrangement
7 Interface definition and pin function
8 Schematic diagram
9 PCB Layout and dimension
10 Software upgrade
11 Service mode description

1, General description
L2M18 is a control board of Color Active Matrix Liquid Crystal Display, It is designed to be
applied to LVDS（Low Voltage Differential Signaling）as the interface method to enable a simple
and low-cost implementation in both board and panel.
L2M18 is intended to support YPbPr&HDMI input and up to 1920x1080 FHD panel.
L2M18 also provides other very important functions, It supports PAL or SECAM color TV system
for Europe, Moreover. it can achieve Analog RGB input signal up to SXGA 1024 vertical /1280
horizontal pixel resolution. it also supports DVD(Option)/YPbPr /HDMI input.
L2M18 includes an audio amplifier which can support 2×3W(or 2x5W) audio power output. it
supports NICAM/A2 stereo input and selects audio channels according to the input signal
detection. OSD pictures are smooth and manual operating is very simple.

Notes:
Different between 9E19 and 9U19.9E19 with Teletext,9U19 without Teletext.

2, Transport/storage/operation description

★ Must not be pressed and distorted
★ Keep away from static places and water
★ Relative Humidity: ≤80%
★ Storage Temperature: -10~+60℃
★ Operation Temperature: 0~+40℃

3,Features
Below you will find the detailed features

SYSTEM PAL BG/DK/I, SECAM BG/DK/L/L’

TV

Frequency Band 48.25 MHz—863.25MHz

Input Level 1.0Vp-p +/- 10%

CVBS

Format PAL, NTSC, SECAM

Format DOS,VGA, SVGA,XGA,SXGA

Color 24BIT

Analog RGB

Input signal

H-Frequency 30—80KHz

V-Frequency 56—5Hz

YPbPr(YCbCr) Format 480i,576i,1080i,480p,576p,720p,1080P

HDMI Format 480i,576i,1080i,480p,576p,720p,1080P

YPbPr+L/R signal Input

DVD(option)

SPI protocol

Interface

Audio Input
Level

Input

Output

≤2V rms.

TV IEC socket

Analog RGB D-SUB 15 jack

YPbPr/YCbCr Green/Blue/Red RCA jack

PC audio Φ3.5mm headphone jack

SCART 1xFull SCART

HDMI x1

16Pin 1.0mm patch FFC +5 pin 2.0mm

DVD(Option)

patch power in+6 pin 2.0mm patch YPbPr
jack

To panel LVDS:30Pin 2.0mm patch jack

Φ3.5mm headphone jack

Audio

Speaker:4Pin 2.54mm patch Jack

Power

Other

Power Input DC in 12±2V

Panel voltage 3.3V, 5V, 12V

Standby Mode

＜1W (main board need 12V 35mA for standby mode)

TDA7266

≥2×5W (8Ω)

Amplifier

Remote and key 5 pin 2.0mm patch jack

Key 3 pin 2.0mm patch jack

Inverter 6 pin 2.0mm patch jack

Key definition VOL-,VOL+,CH+,CH-,MENU,TV/AV,POWER

OSD language 26 countries OSD language

Comb filter 3D

De-interlace 2D

Teletext 200pages

Compatibility of

DVD-R/DVD-RW/DVD+R/DVD+RW/CD-R/CD+R

Disc
Digital Video

DVD-Video/Divx/Xvid/SVCD/VCD

Playback
DVD unit
(option)

Digital Audio

CD-DA/HDCD/MP3/WMA

Playback

Digital Graphic

Kodak Picture CD/ JPEG

Playback

Dolyb & DTS Decoding ,Children Lock for inappropriate

Others

Discs
1：MPEG-1 ML/MP conforming to ISO-11172

Digital Video

2：MPEG-2 ML/MP conforming to ISO-13818

Card Reader
and USB
Section
(option)

Format

3：MPEG-4 and Divx 3.x/4.x/5.x compliant
1:Full MPEG Audio Layer I/II and III(MP3)

digital Audio

2:Flexibity to Dolby AC-3 5.1 Channel or 2 Channel

format

Down-mixing,HDCD,MP3 and WMA

Supported card SD/MS/MMC Media Card

Notes:
Supported OSD language:
Arabian/Spanish/Portuguese/Swedish/German/French/Russian/Italian/Danish/Finnish/Greek/
Norwegian/Dutch/Polish/Turkish/Lithuanian/Serbian/Chinese/Romanian/Blugarian/Lettish/Estoni
an
Hungarian/Slovenian/Slovakian/Czech
L2M18 chassis only can support 8 countries OSD language caused by the flash rom size
limitation. Please indicate which OSD language you needed when you place purchase order.

4,Block diagram

TDA7266

5,Preset mode for VGA/YPbPr inputs
Below the preset mode for VGA,YPbPr (pixel format, H-Frequency and V-Frequency)

★Analog RGB format table

Pixel Format Resolution Horiz.Freq.(KHz) Vert.Freq.(Hz) Standard

SXGA 1280×1024

XGA 1024×768

SVGA 800×600

VGA 640×480

640×480

DOS

720×400

★YPbPr format table

Format Resolution

63.5
80

48.4

56.5

60.0

37.9

47.2

46.9

31.5

37.5

37.9

31.5

31.5

Horiz.Freq(KK

z)

60
75

60
70
75

60
72
75

67
75
72

60
70

Vert. Freq. (Hz)

VESA

VESA

VESA

VESA

VESA

576i 576 15.63 50.00

59.94

480i 480 15.73

60.00

576p 576 31.26 50.00

59.94

480p 480 31.47

60.00

1080i/50 1080 28.13 50.00

59.94

1080i/60 1080 33.75

60.00

59.94

720p/60 720 44.96

60.00

6,Interface arrangement

11

12

13

14

16

10

9

15

8

1

2 3

4 5

★ INTERFACE FUNCTION DESCRIPTION

NO Description NO Description

1 HDMI Input 10 LVDS Interface

2 SCART 11 Key Jack

3 PC/YpbPr Audio Input 12 DVD power supply jack

4 VGA Input 13 IR Jack

5 YPbPr Input 14 Inverter Jack

6 Headphone output 15 DVD YPbPr jack

7 RF Input 16 Inside power supply jack(small size)

8 Speaker Jack 17

9 DVD FPC Interface 18

6

7