Akira 20CHST Schematic

LCT TV

Service Manual

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Model No.: LCT-20CHST
Version: 1.0

-3 -

CONTENTS

SPECIFICATION AND FEATURE .........................................................................................................4

THE FUNCTION INTRODUCTION LS07 CHASSIS LCD TV’S MAIN............................................. 9

SIGNAL PROCESSING FLOWCHART............................................................................................... 22

SPARE PART LIST AND EASY DAMAGE PART LIST ..................................................................... 34

FACTORY MODE .................................................................................................................................36

CIRCUIT DIAGRAM............................................................................................................................ 37

WIRING DIAGRAM ............................................................................................................................. 47

EXPLODED VIEW................................................................................................................................ 48

PART LIST............................................................................................................................................. 49

Model No.: LCT-20CHST
Version: 1.0

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SPECIFICATION AND FEATURE

1. The Technical Specification of F Series Europe LCD TV:

a. TM150F7E:

Max display format: 1024*768(XGA)

Audio power output: 2*2.0W

Voltage: DC12V

Power adapter voltage: AC 100～240W,50/60HZ

Power adapter Model number: FSP048-1AD101C

b. W170F7E:

Max display format: 1280*768(WXGA)

Audio power output: 2*2.0W

AC input voltage of inside power Mold piece: AC 100～240V, 50/60HZ

The unit sets: AC power Switch.

c. TM201F7E:

Max display format: 640*480(VGA)

Audio power output :2*2.0W

AC input voltage of inside power mold piece: AC 100～240V, 50/60HZ

The unit sets: AC power Switch.

2. Main feature

a. RF input , CATV function

Can receive 470MHZ CATV Programs, can store 100 programs

(Program number display 0～99);

b. AV Audio and AV Video input

In scart mode, the system can automatically activate scart checking function to identify

signal input modes (CVBS or RGB) and input signal character (16:9 or 4:3); Capable to

receive PAL, NTSC, SECAM color systems; Very convenient to watch VCR (video cassette

recorder), Pickup Camera and other Disc’s programs.

c. YPbPr input

Can receive high definition YPbPr component video signal from such as DVD Conveniently .

Support format: 480I, 480P, 576I, 576P, 720P (50/60HZ), 1080I (50/60HZ), 1080P

(50/60HZ);

d. VGA input

As the Terminal display Equipments of computer, it can connect with computer conveniently.

It can connect with Computer audio card by its own Audio connection line ,so you can listen

the audio information from computer.

Model No.: LCT-20CHST
Version: 1.0

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e. Program lock and child lock function

The function of program lock can lock the programs, input password and modification, the

function of child lock can lock the keys.

f. Timer function

You can set turn on and turn off on time, and power off in 15 min automatically if no signal

input. Automatically enter into save energy mode by itself if no signal in PC condition, it can

be awaken if signal inputs.

g. Blue screen mute noise

In condition of TV, AV, RGB and YPbPr, gentle blue screen will be displayed if no signal

input.

h. Chinese/English menu

Adopt the design of Convenient and Simple graphic menu, you can operate menu more

conveniently and more intuition.

i. Save energy function (power management mode)

When TV is used as PC display terminal, and PC has no output signal . The TV will be power

off in about 30 Seconds automatically, and enter into standby condition. press down

Power/P+/P-/ Number key of Remote control or the PC signal appearance again, the TV will

be on automatically.

j. Plug and play

The TV works as the terminal Equipments of computer, need not equip install software，it is

real Plug-and-Play.

k. Automatic correct

By its automatic correct function, the LCD TV can bring you the best view.

l. No Flicker, no radiation, green environment protection

The LCD TV can bring you high quality view, and avoid radiation, protect your eyes and look

after your health.

m. Because of it’s advanced power management mode, the TV can realize standby and recall on

function.

n. ACI function (Auto channel Installation).

o. Stereo and digital accompanying sound processing.

Auto identify and demodulate IGR, and decode NICAM digital accompanying sound.

p. Zoom image function

Support follow zoom function: Full screen mode, 4:3 mode (16:9 TFT), 16:9 (4: 3 TFT),

Movie mode, Sub-title movie mode.

q. Light weight, small dimension, low power consumption

Model No.: LCT-20CHST
Version: 1.0

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r. Advanced picture quality Strengthen function

Dynamic skin color Correct: Improve distort color in picture make it Near to real color.

Black level Extension: blacken the more black area of picture. Raise the contrast in Dark

Background.

Color Edge correct: Increase the Steep of color signal edge make the edge of color Transition

more clearly.

Brightness edge correct: increase the steep of Brightness signal edge make the edge of picture

is more clearly.

s. Super fine and inner fairness TFT

t. 10-page teletext storage

u. Dynamic comb filter

v. Headphones output

3. Electric circuit of the TV

The Europe LS07 chassis LCD TV is composed of Steady voltage circuit、inverter Circuit, RF

circuit, video Strengthen circuit, video Processing circuit, Power Enlarge circuit, VGA circuit,

system control circuit and key control circuit. The block diagraph of circuit Constitute is below:

Model No.: LCT-20CHST
Version: 1.0

-7 -

Model No.: LCT-20CHST
Version: 1.0

-8 -

4. PCB Module introduction

The Constitute of the PCB is easier than LP03 chassis, all the Signal Processing are in Main board.

a. Main board Module

Main board Module is the main part of Signal Processing in LCD TV. The input signal is

converted into uniform digital signal, which can be identified by LCM by system control

circuit. Main board module contain two parts of signal processing Module: Philips UOC3

process analog audio and video circuit mainly, MST518 process VGA circuit, signal Format

transform system control circuit mainly. The front module can convert the video IF signal and

audio IF signal from tuner into RGB analog signal and audio signal, this part is named analog

audio and video decoding process. The RGB color from UOC is received by MST518 and

accomplishes A/D conversion, output suitable digital color signal to drive circuit of TFT. 8051

Processor inside UOC is responsible for co-operation the each part of works in system, and

Respond to user operation, which is operated on Control panel (key-press panel Module).

b. Key board Module

It is composed of 7 function keys the user can operate the LCD TV conveniently by using this

Module.

c. Remote control receiving board Module

It is composed of a work indicator light and a remote receive head. The user use the remote

control box by this module can operate the LCD TV conveniently and know the LCD TV

work condition.

d. Earphone output board module

It is composed of a earphone outlet, user can Listen to by earphone conveniently.

e. Inverter board module (include inverter circuit)

The function of the inverter is supply power to light tube in TFT and lighten the back lamp

Unit of TFT module, so the user can see the image on TFT.

Model No.: LCT-20CHST
Version: 1.0

-9 -

THE FUNCTION INTRODUCTION LS07 CHASSIS LCD

TV’S MAIN IC

1. The main IC of LS07 chassis

Number Name Model Main function

1 A1 TAF5-E2I21RW2 RF tuner

2 U8, U21 TDA1517AWT Audio amplifier

3 U3 MST518 AD converter and format change

4 U2 UOC(TDA15021H) Video decode and MCU control

5 Q9 Si2311DS MOS switch

6 U11, U12 IRF7316 MOS switch

7 U19 NTMS10P02 MOS switch

8 U23 LM2596-5.0 Liner voltage IC

9 U1

10 U4 24LC32A

11 U6, U20 PI5V330A Video switch

2. The function introduction of main IC

a. MST518 high integration chip

MST518 is a high performance, high integration image processor which is designed for LCD,

it can support SXGA format (1280*1024).it integrates a group of AD converter, high quality

format transform system, OSD generator, output clock generator, multiple format output

display interface (support TTL, LVDS, RSDS)

MST518 feature:

 Have high quality Expand transform and compress transform, can output XGA format

signal

 Integrated LVDS circuit inside

 8 bit high quality ADC inside

 Double VGA input, Software switch

 Support ITU-656 format signal input

 Support H/V sync, composite sync, green composite sync input, and detect

automatically by itself

 Programmable 10 bit Gamma correct, the brightness and contrast is adjustable

 8 color, 256 Character OSD

 Built-in DDC circuit inside

 Low standby power

 Support TTL, double LVDS signal output, Software switch

Model No.: LCT-20CHST
Version: 1.0

24LC21A EEPROM (save display parameter

information)

EEPROM（save user control information）

-10 -

MST518 pin function:

And CPU interface

Pin Pin name Pin function

33 HWRESET

82 CS Chip select signal of three-wire serial bus

83 SDA data signal of three-wire serial bus

84 SCL clock signal of three-wire serial bus

85 INT interrupt

98-91 AD [7:0]

125 BUSTYPE Bus type select

Analog Interface

38 HSYNC0 Analog Horizontal sync signal input channel 0

39 VSYNC0 Analog vertical sync signal input channel 0

40 HSYNC1 Analog Horizontal sync signal input channel 1

41 VSYNC1 Analog vertical sync signal input channel 1

78 RMID Scaler internal reference voltage

79 REFP

80 REFM

75 RIN0 Analog red signal input channel 0

74 RIN0M Analog red signal input channel 0 regrounding voltage

73 SOGIN0 Green sync signal input channel 0

72 GIN0 Analog green signal input channel 0

71 GIN0M Analog green signal input channel 0 regrounding

70 BIN0 Analog blue signal input channel 0

69 BIN0M Analog blue signal input channel 0 regrounding voltage

66 RIN1M Analog red signal input channel 1 regrounding voltage

65 RIN1 Analog red signal input channel 1

64

63 GIN1 Analog green signal input channel 1

62 SOGIN1 Green sync signal input channel 1

61 BIN1M Analog blue signal input channel 1 regrounding voltage

60 BIN1 Analog blue signal input channel 1

55 REXT Outside connect 390 with 3.3V

GIN1M

Hardware reset，high voltage enable

Parallel bus，the chassis is not used

internal ADC decouple ＋

internal ADC decouple －

voltage

Analog green signal input channel 1 regrounding

voltage

Model No.: LCT-20CHST
Version: 1.0

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LCD Interface

145 OCLK Clock output

146 LDE Enable signal

144 LVSYNC Vertical sync output

143 LHSYNC Horizontal sync output

138 LVA0M

137 LVA0P LVDS ouput 0+

136 LVA1M

135 LVA1P LVDS ouput 1+

134 LVA2M

133 LVA2P LVDS output 2+

128 LVA3M

127 LVA3P LVDS ouput 3+

132 LVACKM

131 LVACKP LVDS clock signal ouput +

26-23,18-15 RB[7:0] TTL red signal channel

14-11, 8-5 GB[7:0] TTL green signal channel

4,3,154,153,150-147 BB[7:0] TTL blue signal channel

GPIO Interface

87 GOUT1/PWM1 PWM output 1

86 GOUT0/PWM0 PWM output 0

2 BYPASS Outside connect filter capacitor

29 DDC_DAT Analog interface DDC data

30 DDC_CLK Analog interface DDC clock

31 DDCROM_CLK DDC ROM clock

32 DDCROM_DAT DDC ROM data

34 XIN Crystal oscillator signal input

35 XOUT Crystal oscillator signal output

Power Pins

48, 54, 58, 77 AVDD A/D convert power supply

56 AVDD_PLL PLL power supply

36 AVDD_MPLL MPLL power supply

10, 22, 88, 99, 111,

129, 139, 151

19, 102, 114, 142 VDDC Digital circuit power supply

1, 9, 20, 21, 37, 42,

45, 51, 57, 59, 76,

81, 89, 100, 101,

112, 113, 130, 140,

141, 152

VDDP Digital signal output power supply

GND Digital circuit ground

LVDS output 0－

LVDS output 1－

LVDS ouput 2－

LVDS output 3－

LVDS clock signal ouput－

Model No.: LCT-20CHST
Version: 1.0

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MST518 inner diagraph:

b. TDA15021H introduction:

The third-generator super integrated circuit UOC III which designed by Philips company

recently integrates with video decode, 2D comb filter, high quality audio transacting

technique, suitable with the European teletext technique and suitable with US closed caption

and V-chip function compatible with single series IC. The series of UOC III have high

integrity, besides completing the Processing of all small signals (IF signal demodulation,

video decode, H/V signal, sound DSP), and integrate all the MCU function. It has many

Advantages, example: the compact circuit, good performance, simple craft and etc. It

matched with company’s high performance price ratio and high product efficiency

demanding. It is suitable for 4:3 or 16:9, 50/60HZ and A100/120HZ TV system, the main

characteristic below:

 Multi-system IF demodulation、analog video decode

 Comb filter internal

 NICAM, stereo auto identify and decode

 SCART input channel source auto identify (RGB, CVBS), SCART image input format

identify (4:3, 16: 9)

 Support 4:3, 16:9 display format

 TOP/FLOF TELETEXT (10 page) receive display

 Channel auto install ACI function (can preset)

 4 CVBS or 3 Y/C input, 1 CVBS output, 2 YcrCb/2 RGB input

 4 AV audio input, 1 AV adjustable audio volume output

 Volume auto level control circuit

 Global FM demodulation

 Picture quality enhancement of dynamic peak value control, skin color correct, Gamma

correct, Black level extension.

Model No.: LCT-20CHST
Version: 1.0

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 Can turn down horizon and vertical scan part output H/V sync signal to Scaler

 128K Flash Memory inside, support program on line

 Automatic Y/C signal identify

TDA15021H pin function:

Pin Pin name Pin function

1 VSSP2 Grounding

2 VSSC4 Grounding

3 VDDC4 +1.8V

4 VDDA3 +3.3V

5 VREF_POS_LSL +3.3V

6 VREF_NEG_LSL+HPL 0V

7 VREF_POS_LSR+HPR +3.3V

8 VREF_NEG_HPL+HPR 0V

9 VREF_POS_HPR +3.3V

10 XTALIN Crystal oscillator input

11 XTALOUT Crystal oscillator output

12 VSSA1 Grounding

13 VGUARD/SWIO Protecting voltage input or I/O

14 DECDIG DECDIG signal input

15 VP1 +5V

16 PH2LF The second grade horizontal phase lock filter

17 PH1LF The first grade horizontal phase lock filter

18 GND1 Grounding

19 SECPLL SECAM PLL decouple

20 DECBG Inside reference voltage decouple

21 EWD/AVL VDD5A voltage input

22 VDRB Tv vertical sync signal output

23 VDRA Vertical sync output

24 VIFIN1 VIFinput 1

25 VIFIN2 VIFinput 2

26 VSC Outside connect vertical ramp capacity

27 IREF Recurrent input

28 GNDIF IF grounding

29 SIFIN1 SIF input 1

30 SIFIN2 SIF input 2

31 AGCOUT Tuner RF AGC control voltage output

Model No.: LCT-20CHST
Version: 1.0

-14 -

32 EHTO Over voltage protection input

33 SSIF MUTE control signal input

34 AUDIOIN5L Av left track signal input

35 AUDIOIN5R Av right track signal input

36 AUDOUTSL SCART/CINCH left track output

37 AUDOUTSR SCART/CINCH right track output

38 DECSDEM Track demodulator decouple

39 QSSO De emphasis capacitor

40 GND2 Grounding

41 PLLIF IF_PLL filter

42 SIFAGC Sound intermediate frequency auto gain control

43 IFVO IF demodulation video output

44 FMRO Fm broadcast output

45 VCC8V The supply voltage of Sound switch

46 AGC2SIF The second sound intermediate frequency auto gain

control

47 VP2 +5V

48 IFVO The video output of Choose channel

49 AUDIOIN4L HD signal left track audio output

50 AUDIOIN4R HD signal right track audio output

51 CVBS4/Y4 S-video luminance signal input

52 C4 S-video chroma signal input

53 AUDIOIN2L PC signal left track audio input

54 AUDIOIN2R PC signal right track audio input

55 CVBS2/Y2 AV CVBS signal input

56 AUDIOIN3L Inside DVD module left track audio input

57 AUDIOIN3R Inside DVD module right track audio input

58 CVBS3/Y3 Inside DVD module brightness signal input

59 C2/C3 Inside DVD module chroma signal input

60 AUDOUTLSL Main channel left track output

61 AUDOUTLSR Main channel right track output

62 AUDOUTHPL Earphone channel left track output

63 AUDOUTHPR Earphone channel right track output

64 CVBS/PIP CVBS/PIP output

65 SVM Scan modulate output

66 FBISO Flyback input/sandcastle output or composite H/V

timing output

67 HOUT Horizontal sync signal output

Model No.: LCT-20CHST
Version: 1.0

-15 -

68 VSScomb Grounding

69 VDDcomb +5V

70 VIN V signal input

71 UIN U signal input

72 YIN Y signal input

73 YSYNC Y signal input for Sync separate

74 YOUT Y signal output

75 UOUT U signal output

76 VOUT V signal output

77 INSSW3 RGB/YpbPr insert identify signal input

78 R/PrIN3 R/Pr signal input

79 G/YIN3 G/Y signal input

80 B/PbIN3 B/Pb signal input

81 GND3 Grounding

82 VP3 +5V

83 BCLIN Beam current limiter input

84 BLKIN Black current input

85 RO R basic color signal input

86 GO G basic color signal output

87 BO B basic color signal output

88 VDD3 +3.3V

89 VREFAD_NEG 0V

90 VREFAD_POS +3.3V

91 VREFAD Audio ADC re.voltage

92 GNDA Grounding

93 VDDA +1.8V

94 VDD3A +3.3V

95 VSSADC Grounding

96 VADC +1.8V

97 INT0 Remote control signal input

98 P10/INT1 DPF clock line

99 P11/T0 DPFdata line

100 VDDC2 +1.8V

101 VSSC2 Grounding

102 P04/12SWS MST reset signal

103 P03/12SCLK HD Pc select control signal

104 P02/12SDO2 Power Amplifier standby control signal

105 P01/12SDO1 TV_DPF select control signal

Model No.: LCT-20CHST
Version: 1.0

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106 P00/12SDII/O Turn on control signal

107 P13/T1 MST chip select signal

108 P16/SCL UOCI2C bus clock line

109 P17/SDA UOCI2C bus data line

110 VDDP +3.3V

111 P20/TPWM Red indicator light control signal

112 P21/PWM0 Green indicator light control signal

113 P22/PWM1 TFT power supply control signal

114 P23/PWM2 Inside DVD module power supply control signal

115 P30/ADC0 Reserve IO port

116 P31/ADC1 Earphone insert identify signal input

117 VDDC1 +1.8V

118 VDD18 +1.8V

119 P32/ADC2 DVD key-press signal input

120 P33/ADC3 TV key-press signal input

121 VSSC Grounding

122 P24/PWM3 Background control signal output

123 P25/PWM4 SAW filter control signal

124 VDDC3 +1.8V

125 VSSC3 Grounding

126 P12/INT2 MST interrupt signal input

127 P14/RX MST data line

128 P15/TX MST clock line

Model No.: LCT-20CHST
Version: 1.0

TDA15021H inside block diagram

-17 -

Model No.: LCT-20CHST
Version: 1.0

-18 -

c. TDA9178 introduction

TDA9178 is a analog signal processor with standard YUV input and output interface .It provid

three main process function: luminance vector, color vector and spectrum process. It can finish

comprehensive picture improving function independently. The characteristics of the TDA9178 are

below:

 Luminance Transient Improvement (LTI), Colour Transient Improvement (CTI)

 Variable gamma control

 Self-suitable black level extend control

 Skin color correction, green intensity ,blue extend

 Noise measurement and reduced noise process founction

 Line Width Control (LWC)

TDA9178 PIN DESCRIPTION:

Pin Pin name Function

1 Sand castle input Sand castle input

2 Not connected Grounding

3 ADC input 1 A/D convertor input 1

4 ADC input 2 A/D convertor input 2

5 ADC input 3 A/D convertor input 3

6 Luminance input Y input

7 Address selection input I2C address choose input port

8 U signal input U input

9 V signal input V input

10 Test pin Grounding

11 Serial clock input (I2C-bus) I2C bus clock signal

12 Not connected Not connected

13 Not connected Not connected

14 Serial data input/output (I2C-bus) I2C bus data signal

15 Decoupling digital supply Connect decouple capacitor external

16 V signal output V signal output

17 U signal output U signal output

18 Ground Ground

19 Luminance output Y signal input

20 Supply voltage Supply power

21 SCAVEM output Scan velocity modulate output

23 Not connected Grounding

24 Not connected Grounding

Model No.: LCT-20CHST
Version: 1.0

TDA9178 inside block diagram:

-19 -

Model No.: LCT-20CHST
Version: 1.0

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d. TDA1517AWT brief:

The TDA1517ATW is a double channel class-AB power amplifier contained in a plastic heat

sink thin shrink small outline package (HTSSOP20). The device is primarily developed for

multimedia applications.

• Outside circuit is simple

• Mute, standby is controllable

• Temperature protect circuit

• Low noise switch

• Constant gain

TDA1517 PIN DESCRIPTION:

Pin Pin name function

3 Non-inverting input Audio input

5 Supply voltage ripple rejection Bias circuit filter

8, 9 Output Audio output

12, 13 N.C. Not connected

15, 16 Supply voltage

17 Mode select switch Work mode select

18 Inverting input

1, 2, 4, 6, 7, 10,

11, 14, 19, 20

GND Ground

＋12V power supply

Reverse input terminal （connect capacitor to

ground ）

Model No.: LCT-20CHST
Version: 1.0

TDA1517 inside block diagram:

-21 -

Model No.: LCT-20CHST
Version: 1.0

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SIGNAL PROCESSING FLOWCHART

This chapter mainly introduces analog signals process, video intensify process, TV system control

process, TV supply system of the Europe LCD TV.

1. Analog signals process

a. IF/RF process

Completed by TAF5-E2I21RW2 RF tuner, output IF signal.

The Function of RF tuner is below:

Pin Symbol Function

1 AGC Auto gain control voltage

2 TU The TV do not connect

3 ADD Ground

4 SCL

5 SDA

6 BM +5V power supply

7 BM +5V power supply

8 NC Not connected

9 BTL

10 NC Not connected

11 IF IF signal output

2. Image and sound process

UOC chip receives the IF signal separated from SAW, detect and decode. Output RGB color

analog signals from the 85, 86, 87 pin respectively. Output the main channel L, R audio signal

from 60, 61 pin. Output earphone channel L, R audio signal from 62, 63 pin. Additional, Part

number U7, TDA9178 complete the enhancement of quality of the picture, by the output 74, 75,

76 pin Of UOC and the input 70, 71, 72 pin, combined with UOC to form a loop circuit.

Further, AV, S-Video, YC signal of inside DVD (some types of TV have not) is also decoded

inside of UOC chip, switch internal UOC with TV input and output a RGB color analog signal,

send it to back-end process.

Model No.: LCT-20CHST
Version: 1.0

2

C bus（clock ）

I

2

C bus（data ）

I

+32V power supply，form 0～32V tune voltage

-23 -

3. Digital signal process

The analog RGB signal output from UOC and RGB signal output from DFP are switched and

selected by a PI5V330A, input it into the 65, 63, 60 pin Of MST518. The RGB signal output from

computer and HD-YpbPr signal are switched and selected by another PI5V330A, input into the 75,

72, 70? of MST518. This two channel RGB signal are switched inside MST518, then AD

converter, video format transition, at last output digital color signal, which is suitable for TFT

drive circuit. MST518 process the pixels ratio converting of input video signal, the image auto

optimization process, then process memory buffer, scaler, chroma matrix circuit, chroma look-up

table, chroma space gain, etc. Output corresponding standard physical resolution digital color

signal and corresponding sync, clock signal to TFT, control the TFT to display image correctly.

4. TV power supply system:

a. The supply power system of the main IC is below:

 12V:the unit main power supply

 +34V:RF tuner tune voltage

 VCC5: stable and constant +5V power supply

 VCC5A: +5V power supply software can turn off

 V3_3D:UOC digital part supply power supply

 V1_8V1:UOC digital part constant supply power supply

 V1_8V2:UOC digital part power supply can be turned off

 V2_5M:MST518 digital core supply power supply

 V3_3M:MST518 supply power supply

Model No.: LCT-20CHST
Version: 1.0

-24 -

b. The constitute and distributing of the TV

12V

VCC5

PWRON

PWRON

U8

LM2596-

5.0

U18

7805

IRF7316

12Va

VCC5_SW

U11

Double
voltage

U17

7808

U14

LM1084_3

.3V

U15

LM1117_2

.5V

L3

V3_3M

V2.5M

VCC5

C188

+32V

VCC5A

TO INVERTER

TO TDA9178

Filter

Filter

Filter

Filter

Filter

VDPLL

VPO

VAD

VPLL

VDD

U22

NPC1117D

FB39

FB40

FB41

L6

V1_8V1

Q9

NTMS10

P02R

U19

NTMS10

P02R

TO DPF OR DVD

V1_8V2

VLCD

C294

12V

U13

NCP1117

U23

LM2596-

5.0

V3_3D

V3_3M

VCC5

12V

Model No.: LCT-20CHST
Version: 1.0

-25 -

K

5. The main element in main board and location of socket and definition

8

7

6

5

4

3

2

A

E

25

L

21

10

11

13

18

19

20

22

23

24

Model No.: LCT-20CHST
Version: 1.0

-26 -

Socket definition

Number Name Connect object Function description

1 JP1 Connect socket +12V, +12V, GNG, GND(use when inside

power supply plank， JP2 not use )

2 JP2 Connect adapter

3 J8 Connect outside VGA audio input

4 J1 Connect outside VGA input

5 J3 Connect outside HD-YpbPr input

6 J4 Connect outside HD audio input

7 J2 Connect outside SCART signal

input

8 J20 Connect outside AV input

9 J9 Connect inside DVD signal input

10 J21 Connect inside DVD signal input

11 J7 Connect inside DVD K panel

12 J12 Connect earphone output panel

13 J14 Connect speaker

14 J13 Connect speaker

15 J6 Connect TV K panel Look circuit diagram, the second pin is

16 J5 Connect remote control Look circuit diagram, the fifth pin is 3.3V

17 J11 UOC debug socket

18 J10 DPF digital photo-frame signal input

19 J17

20 J16

21 J22

22 J15 MST518 debug socket

23 J19 Supply DVD or DPF power Look circuit diagram, the first, second,

24 J18 Connect inverter +12V, +12V, poor light switch, GND,

Connect display screen（TTL

screen）

Connect display screen（LV DS

screen）

Connect display screen（TTL

screen）

+12V, GND, GND（use when outside

connect adapter，JP1not use）

Look circuit diagram，the second pin is

3.3V

3.3V

AU 20”, 15”

SAMSUNG 15”, 17”

LG 20”, 17”

third pin are 3.3V

DND, GND

Model No.: LCT-20CHST
Version: 1.0

-27 -

Explain of Main element

No. Name Element Function description

A A1 RF tuner TAF5-E2I21RW2 RF input, IF output

B U2 UOC(TDA15021H) Video decode and MCU control

C U3 MST518 AD converter and format transition

D U20 PI5V330A Video switch on/off

E U6 PI5V330A Video switch on/off

F U11 IRF7316 MOS switch

G U9 LM2596-5.0 Linear voltage IC

H U23 LM2596-5.0 Linear voltage IC

I U19 NTMS10P02 MOS switch

J U21 TDA1517AWT Audio power amplifier

K U8 TDA1517AWT Audio power amplifier

L U4 24LC32A EEPROM(store user control information)

M Q9 Si2311DS MOS switch

N U12 IRF7316 MOS switch

O U1 24LC21A EEPROM(store display parameter information)

Model No.: LCT-20CHST
Version: 1.0

-28 -

TYPICAL TROUBLESHOOTING FLOWCHART

1. Typical troubleshooting flowchart

a. Not anything (haven’t sound , haven’t picture, haven’t indicator light), and not respond key-press, remote control.

No answer,no key

press,no rem ote control

NO

Mend or change

adapter

NO YES

Check U13、 U22

Outsid e circuit

Model No.: LCT-20CHST
Version: 1.0

Is outside adapter(or inside)

output 12V normal?

YES

Is U 13、 U22 output
port voltage normal?

Change U2

YES

The connection of

Main board and key

press ,rem ote plane is

reliable or not?

Check each supply power pins

voltage of U13、 U22 output to

U2 are reliable or not?

YES One pin has no voltage

NO

Reset the connect

lines

1、 check outside parts of an
apparatus of supply power pin .
2、 check the jointing is O K or
not.

b. Have sound no picture, indicator light work normally

-29 -

indicator light work,but black screen

when pressing down the power supply

key

Observe back lamp is on or off

YES

U13、U22 output voltage

is normal or not?

NO

Check U13、U22

Outside circuit

YES

Check each supply power pin voltage

which output from U13、U22 to U2 is

normal or not?

YES One pin no voltage

1、 check supply power pin outside

Change U2

parts of an apparatus
2、 check the jointing is OK or not

Model No.: LCT-20CHST
Version: 1.0

NO

Cheeck inverter supply

power voltage and

connect line

-30 -

c. White screen: The reason of the troubleshoot is the signal electrode electrode haven’t working voltage. The TFT is always in transparent condition, so the

whole screen is in white raster.

VLCD of screen socketJ16(J17、J22) in

main board is normal or not?

NO

Check Q25、U19、FB39、
FB40、FB41, ect parts of an

apparatus

oscillograph to check the signal input

YES

Check PCB copper aluminium

connect line

NO

Switch signal source,use the

or not

YES

Check the jointing of screen socket in main

board is OK or not?

YES

Patch jointing

NO

Check U2 outside circuit is normal or

not ,change the fault ones.

Model No.: LCT-20CHST
Version: 1.0

d. Picture abnormal, color abnormal, short of color

-31 -

Observe the picture is different in one

condition by the mode of switch signal

source

TV、AV condition picture

different

Che c k U20 and i t ’ s

outsi de ci rcui t ,check

the Q12、Q1 4 、 Q15 i s

nor mal or not

normal

Check the output of 85th、

86th、87th pin of U2

HD、 VGAcondition picture

different

Chec k U6 a nd i t ’ s
outside ci rcuit is

nor mal or not

normal

Check FB1、FB2、FB3、

FB4、FB5 inductance are

normal or not

Model No.: LCT-20CHST
Version: 1.0

all appear picture different

Check the jointing of screen

socket J16、J17、J22 in

main board is OK or not,the

connection is OK or not

normal

Check U2 outside

circuit is normal or

not,change fault ones

-32 -

2. The example of service

Example 1: Can’t turn on the TV

Troubleshoot phenomenon: After connect power supply and turn on the power supply , the

“AKIRA” logo will not appear on screen. Press the key or use the remote control, the TV has no

reflect, no display and black screen.

The process of maintenance: remove the plug of adapter output, measure adapter output voltage is

+12V,the adapter works normally. Check the connection with key-press panel、remote control

panel and mainboard. If it is ok, the problem must be MCU not work. First check supply power of

U2 chip. Connect power supply, then measure the voltage of the 2, 4 pin of U13NTMS10P02 is

0.2V, and over-heat, the reason must be short circuit of power supply backend. You should remove

the plug quickly. Otherwise the chip must be bad. Use the multimeter to measure, confirm it is

short circuit to ground. The places, which connect U2 with 3.3V voltage are so many, you should

disconnect and measure it one by one. When you disconnect the C68, if it is normal, C68

grounding Short circuit.

Example 2: No picture in VGA mode

Troubleshooting phenomenon: in TV/AV mode, the image and sound is ok, PC (in VGA mode) is

no picture, but have state icon.

The process of maintenance: first check the signal source, signal socket, plug are ok or not.

Because during switch the mode, the image display normally in non-PC mode, it is proved that the

backend image public processing channel is ok, namely U3MST518 and backend image signal

processing circuit work normally. In PC mode, measure the arbitrary pin of 4, 7, 12 pin, image

date terminal of U6P15V330A by oscillograph there are no waveform, change U6P15V330A and

the Troubleshooting phenomenon disappear.

Example 3: No picture in VGA mode and the “signal beyond boundary” is appeared on screen.

Troubleshooting phenomenon: no picture in VGA mode and the “signal beyond bound” is

appeared on screen in TV/AV mode, image, sound is ok.

The process of maintenance: first check the signal output from the signal source is not standard or

beyond the resolution, which is supported by TFT except of the two cases, the phenomenon

comes from the TFT display. Under general circumstance it is caused by the abnormal of the

horizon sync impulse, vertical sync impulse of VGA signal. Inspect the 38

oscillograph. Find the magnitude of horizon sync impulse is below the normal, measure the

th

waveform of 13

the resistance of R23 is 10K , but the rating resistance is 1K , so it is obvious that the

magnitude of horizon sync impulse is attenuated too large caused by value of couple resistance

R23 become large. So the pixel clock inside of the MST518 can not vibrate, result in the A/D

converter of MST518 internal can not work normally. So appear no picture in VGA mode and

“signal beyond boundary” on TFT screen.

pin of VGA J1. If it is ok, so maybe resistance of the R23 will be large, measure

th

, 39th pin of U3 by

Model No.: LCT-20CHST
Version: 1.0

-33 -

Example 4: Can control TV by remote control, but can not control TV by key-press panel

Troubleshooting phenomenon: image、sound is ok under any source, use remote control to operate each

function is ok, but can not control by using the key-press panel, failure completely.

The process of maintenance: first check the socket of J6 on mainboard, the solder and touch of

connector are ok or not. if it is ok, check the key-press panel ,measure each resistance, find R1 open

circuit, change it .

Example 5: The image is ok after turn on the TV, but left speaker has no sound output

Troubleshooting phenomenon: the image is normal in TV mode, but the left speaker has no sound

output, using remote control to operate, each function is ok. Use AV, PC audio input, is still no sound

output.

th

The process of maintenance: measure the waveform from 60

to signal flow chat, measure R227、R157、U8、C130 one by one, and observe the waveform is ok or not,

find the back end of C130 have not waveform, change C130 and troubleshooting disappear.

pin of UOC by oscillograph, according

Model No.: LCT-20CHST
Version: 1.0

-34 -

SPARE PART LISTS AND EASY DAMAGE PART LIST

Spare part lists:

TM150F7E:

Material name Type (module NO.) Material code Remark

Main board groupware JUJ6.690.033-2 8669000332J

Remote control panel groupware JUJ6.694.016 8669400160J

Key-press panel groupware JUJ6.694.017 8669400170J

Earphone panel

groupware JUJ6.695.002 8669500020J

TFT LTM150XH-L06 68219601565

Samsung

INVERTER panel groupware INV15-474 59324104740

Dynamoelectric speaker Y2898-01-5W-4 56231105042

Remote control KLC5A(JUL2.018.351) 8201803510L

Power supply adapter FSP084-1CD02C 67128084025

W170F7E:

Material name Type (module No.) Material code Remark

Main board groupware JUJ6.690.033-1 8669000331J

Main board groupware JUJ6.690.033-6 8669000336J

Remote panel groupware JUJ6.694.016 8669400160J

Key-press panel groupware JUJ6.694.015 8669400150J

Earphone panel

groupware JUJ6.695.002 8669500020J

TFT LTM170W1-L01 68219601701

TFT LC171W03 68211710305

INVERTER panel groupware INV17-4505 59324125010

INVERTER panel groupware INV17-6506 59324165060

Dynamoelectric speaker Y2898-01-5W-4 56231105042

Remote control KLC5A(JUL2.018.351) 8201803510L

Inner power supply module FSP084-1CD02C 67128084025

screen use

Samsung

screen use

LG screen

use

Model No.: LCT-20CHST
Version: 1.0

-35 -

TM201F7E:

Material name Type (module No.) Material code Remark

Main board groupware JUJ6.690.033 8669000330J

Main board groupware JUJ6.690.033-5 8669000335J

Remote panel groupware JUJ6.694.016 8669400160J

Key-press panel groupware JUJ6.694.015 8669400150J

Samsung

Earphone panel groupware JUJ6.695.002 8669500020J

TFT A201SN01 68219020110 LG screen use

TFT LC201V02 68212010235

INVERTER panel groupware INV18-605D 59324106054

INVERTER panel groupware INV20-606A(D) 59324126061

Dynamoelectric speaker Y38106-01-5W-4 56231105043

Remote control KLC5A(JUL2.018.351) 8201803510L LG screen use

Inner power supply module FSP084-1CD02C 67128084025

Model No.: LCT-20CHST
Version: 1.0

screen use

Samsung

screen use

Samsung

screen use

-36 -

FACTORY MODE

The method of Entering into factory mode:

Turn down the volume to 0, press down the key of “mute” in remote control, then press the key of

“menu” in remote control. press CH+ and CH- choose the items which need to adjust.

The method of exiting from factory mode:

Press the

again.

Now the introduction of the modes which are often used is below, the others are design parameter

mode, not permit to modify.

M6 The fast key is the key of “language”

IFPL Adjust the scale of picture and sound the IF signal

M6 The fast key is the key of “language”

TOP Tune AGC voltage

M13 The fast key is the key of “DVD”

DVD The switch of DVD source

DPF The switch of DPF source

M17

LOGO LOGO display or not

BLUEBACK Blue screen switch

M24

AUTO Auto revise

M25 The fast key is the key of “title”

INIT Initialization program

M28 The fast key is the key of “0”

IIC BUS OPEN Open bus

in remote control, after exiting from the factory mode, you should turn on the TV

Model No.: LCT-20CHST
Version: 1.0

CIRCUIT DIAGRAM

D

C

B

A

-37 -

03_TUNER
03_TUNER

IF_OUT
+34V
SCL_UOC
SDA_UOC
AGC

02_SCART_PC_HD
02_SCART_PC_HD

HD_AUD_LIN
SC_AUD_ROUT
SC_AUD_LOUT
SCART_B_IN
SCART_G_IN
SCART_R_IN
SC_AUD_RIN
SC_AUD_LIN
STAT_AV
FBLIN
SC_CVBSIN
HD_AUD_RIN
PC_AUD_LIN
PC_AUD_RIN
PR_IN
PB_IN
HD_Y_IN
TV_IR
LED_RED
LED_GREEN
HD_Y_IN
PB_IN
PR_IN
HD_PC_SW
SOGIN1
PC_RIN
PC_GIN
PC_BIN
PC_HS
PC_VS
PC_HSIN
PC_VSIN
HD_PC_SW
DVD_C2IN
DVD_Y2IN
DVD_AUD_LIN
DVD_AUD_RIN
PC_RIN
PC_GIN
PC_BIN
PC_VS
PC_HS
UPDATE_CON
VGA_SDA
VGA_SCL
DDC_SDA
DDC_SCL
TV_KEY_DEC
DVD_KEY_DEC
SDA_UOC
SCL_UOC

10_VGA_UPDATE
10_VGA_UPDATE

UPDATE_CON
VGA_SCL
VGA_SDA
DDC_SDA
DDC_SCL
SCL_UOC
SDA_UOC

1 2 3 4 5 6

SC_CVBSOUT

G_RIN
G_GIN
G_BIN

04_UOCIII TDA15021H
04_UOCIII TDA15021H

AV_CVBSIN
Y_OUT
U_OUT
V_OUT
TV_R
TV_G
TV_B
TV_HSYNC
SANDC
AGC
M_LOUT
M_ROUT
HP_LOUT
HP_ROUT
TV_IR
LED_GREEN
LED_RED
TV_KEY_DEC
IF_OUT
SDA_UOC
SCL_UOC
PC_AUD_LIN
V_IN
U_IN
Y_IN
HD_PC_SW
CSZ_MST
SDA_MST
SCL_MST
RST_MST
ASTB
SCL_DPF
AV_AUD_LIN
AV_AUD_RIN
HD_AUD_LIN
HD_AUD_RIN
SDA_DPF
PC_AUD_RIN
SCL_UOC
SDA_UOC
ON_PANEL
ON_BACKLITE
DVD_KEY_DEC
HP_IDENT
INT_MST
TV_DPF_SW
PWRON
DVD_C2IN
DVD_Y2IN
DVD_AUD_LIN
DVD_AUD_RIN
EN_DPF_DVD
MUTE
TV_VSYNC
SVIDEO_Y1IN
SVIDEO_C1IN

05_TV_DPF_MUX
05_TV_DPF_MUX

SANDC
V_IN
V_OUT
Y_IN
U_OUT
U_IN
Y_OUT
SDA_UOC
SCL_UOC
TV_HSYNC
TV_DPF_VSIN
TV_DPF_HSIN
TV_B
TV_R
TV_G
DPF_RIN
DPF_GIN
DPF_BIN
TV_DPF_SW
TV_DPF_SW
DPF_RIN
DPF_GIN
DPF_BIN
TV_VSYNC

09_Power Supply
09_Power Supply

+34V
PWRON
ON_PANEL
ON_BACKLITE
EN_DPF_DVD
SDA_DPF
SCL_DPF

TV_DPF_RIN
TV_DPF_GIN
TV_DPF_BIN

VLCD

06_MST518
06_MST518

TV_DPF_HSIN
TV_DPF_VSIN
PC_HSIN
PC_VSIN
TV_DPF_BINM
TV_DPF_BIN
TV_DPF_GINM
TV_DPF_GIN
TV_DPF_RINM
TV_DPF_RIN
SOGIN1
G_RIN
G_GIN
G_BIN
G_RM
G_GM
G_BM
SDA_MST
SCL_MST
CSZ_MST
RST_MST
INT_MST
RB[0..7]
GB[0..7]
BB[0..7]
PCLK
PDEN
PHSYNC
PVSYNC
RX0+
RX0­RXCLK­RXCLK+
RX1­RX1+
RX2­RX2+
RX3­RX3+
TV_DPF_RINM
TV_DPF_GINM
TV_DPF_BINM
G_RM
G_GM
G_BM
SDA_MST
SCL_MST
CSZ_MST
RST_MST

Title

07_Panel
07_Panel

BB[0..7]
PCLK
PHSYNC
RB[0..7]
PVSYNC
GB[0..7]
PDEN
RX0+
RX0­RXCLK­RXCLK+
RX1­RX1+
RX2­RX2+
RX3­RX3+

08_Sound Amplifier
08_Sound Amplifier

HP_ROUT
HP_LOUT
HP_IDENT
M_LOUT
M_ROUT
ASTB
MUTE

LS07-EU-LCDTV

654321

D

C

B

A

Model No.: LCT-20CHST
Version: 1.0

-38 -

J1

D5

3

BAV99

VGA_V

6
1
11
7
2
12
8
3
13
9
4
14
10
5
15

16 17

VCC5

2

3

D4
BAV99

1

1-788624-2/AMP

2

1

DDC_SCL

DDC_SDA

2

1

3

D7

BAV99

2

3

D1
BAV99

1

VRIN

VGIN

VGA_SDA

VBIN

VGA_V

UPDATE_CON

VGA_SCL

FB5

PC_VS

ECBP2012M801T C12 220pF

C12,C13 option (open for better phase)

PC_HS

FB4

ECBP2012M801T

R41 Option

2

1

BAV99

R42

10K

3

D8

J5

5
4
3
2
1

CON5
J6

3
2
1

CON3
J7

3
2
1

CON3

PR_IN

PC_RIN

HD_Y_IN

PC_GIN

PB_IN

PC_BIN

HD_PC_SW

0: Select YPbPr
1: Select PC

V3_3D

V3_3D

V3_3D

LED_GREEN

LED_RED

R29

R20

TV_IR

14
13

11
10

15

47K

47K

2
3

5
6

1

TV_KEY_DEC

DVD_KEY_DEC

U6

S1A

VCC

S2A

S1B

DA

S2B

DB
S1C
S2C

DC

DD

S1D
S2D

IN

GND

/EN

PI5V330A

16

4
7

12
9

8

2

3

D2
BAV99

1

R22 1K

R21 10K

R23 1K

C13 33pF

R24 2.2K

R45

R43

15K

15K

J11

CON4

VCC5

2

3

D3
BAV99

1

VGA_PWR

U1

7

VCLK

6

SCL

5

SDA

24LC21A

4

R16

3
2

10

Use for WISP and WIC32

ECB2012M800T VCC5A

C120

0.1uF

R152

R154 100

R155 390 C133 1nF

ECBP2012M700T

ECBP2012M700T

ECBP2012M700T

PC_VS

PC_HS

VCC
NC1

NC2
NC3

GND

SDA_UOC

SCL_UOC1

FB38

C121
10uF16V

100

C124 47nF
C122

100R153

FB3

FB2

FB1

R1

75

D6 BAV70

2 1

3

8
1

2

C20

3

0.1uF

4

VCC5

C125

0.1uF

G_RIN

47nF

G_GIN

47nFC123

G_BIN

SOGIN1

C1

12pF

R2

75

VCC5

C2

12pF

R3

75

J3A

AV-1-3

J3B

AV-1-3

J3C

AV-1-3

Y

ECBP2012M700T

4

PB

ECBP2012M700T

5

PR

6

HD_PC_SW

PC_HS

PC_VS

PC_RIN

PC_GIN

PC_BIN

C3

12pF

FB51

1

FB52

2

FB53

3

ECBP2012M700T

13 U16D

74LVC126A

R219

75

R218

75

75

1112

C24

10uF16V

C21

10uF16V

C14

10uF16V

VCC5A

VCC5A

VCC5A

1

4

12Va

SC_AUD_LOUT

SC_AUD_ROUT

R178
22K

R56
10K

R179
22K

R48
10K

R180
22K

R26
10K

V3_3M

U16A

147

74LVC126A

U16B

74LVC126A

10 U16C

HD_Y_IN

PB_IN

PR_IN

32

65

R220
100

74LVC126A

R221

4.7K

R223

6.8K

89

SC_CVBSOUT

PC_HSIN

PC_VSIN

R225
1K

2N3904

C137

Q13

10uF16V

VCC5A

R222

4.7K

R224

6.8K

R7
220

C71

47uF16V

Q8

2SA1162

J4A

AV-1-2K

4

J8

GCC02-0085

DVD Signal Input

R226
1K

SCART_B_IN
SCART_G_IN

SCART_R_IN

1

J9

1
2
3
4
5
6
7
8

9
10
11
12

CON12

100uF16V

Q18
2N3904

R8

75

R32
10K

C199

C198

10uF16V

C233

0.1uF

C9

C8

100pF

C15

100pF

R92

75

HD_AUD_LIN

R53
47K

10K

R54
47K

100pF

R31

R79

75

75

C22
100pF

C23
100pFR217

FB21 ECI2012M2R2KT
C182

330pF

FB25 ECI2012M2R2KT
C184

270pF

R9 330 R65 10K
R10 330

R11 100
R12 100
R13 100

C6

C136

C7

100pF

100pF

100pF

R34
47K

R51 10K

R52

R25 10K

R27

J2

112
334
556
778
9910
111112
131314
151516
171718
191920
212122

SCART

PC_AUD_LIN

PC_AUD_RIN

C183

330pF

C185

270pF

R44
47K

10K

R46
47K

Title

3

R78

R75 10K
R39 10K

R62
R64

75

J4B

AV-1-2K

2

5

R50

75

R55

75

C135
100pF

C146
100pF

47K

100

100

C17

100pF

R33
10K

2
4
6
8
10
12
14
16
18
20
22

R3675R37

LS07-EU-CONNECTORS

R40

C10

100pF

47K

R38

C18

3.3K

100pF

R35
47K

DVD_C2IN

DVD_Y2IN

DVD_AUD_LIN

DVD_AUD_RIN

C11

100pF

C16
100pF

SC_AUD_RIN
SC_AUD_LIN

C138
100pF

STAT_AV

FBLIN

SC_CVBSIN

HD_AUD_RIN

Model No.: LCT-20CHST
Version: 1.0

-39 -

D

AGC1TU2ADD3SCL4SDA5+5V6+5V7NC8BTL9NC10IF-OUT

C

SCL_UOC

SDA_UOC

SCL_UOC

SDA_UOC

B

AGC

AGC

R111

68K

R60 47

R61 47

R112 10K

R113 10K

D10

IN4148

C239
22uF16V

A1 TAF5-E2I21RW2

PHILIPS

FB35 ECB2012M800T

C147

0.1uF

C240
47uF16V

12

PAD

13

PAD

14

PAD

15

PAD

R105

4.7K

11

C204

10nF

R47
100

C241
47uF16V

VCC5A

C148

0.1uF

C242

0.1uF

IFGND

R41

3.3K

D11

uPC574

R109

0

R110
100

C244

4.7uF/50V

L2

ECI2012KR56KB

Q1
2SC388

L5

ECI2012K220T

C209

10nF

C221

10nF

C224
22nF

R49
10

100uF16V

C227

IFGND

IF_OUT

+34V

VCC5A

FB32

ECI2012K220T

A

LS07-EU-TUNER

1 2 3 4

5

654321

D

C

B

A

Model No.: LCT-20CHST
Version: 1.0

-40 -

D

SCART_R_IN

SCART_G_IN

SCART_B_IN

FBLIN

V_IN
U_IN
Y_IN

SC_CVBSIN

DVD_Y2IN
DVD_C2IN

SC_CVBSOUT

Y_OUT

C

HD_AUD_LIN
HD_AUD_RIN

SC_AUD_LIN
SC_AUD_RIN

10uF16V

C86

1uF/50V

PC_AUD_LIN
PC_AUD_RIN
DVD_AUD_LIN
DVD_AUD_RIN

C53

R91 12K

VDD5A_1

R73 47K

C55 2.2uF

C56 2.2uF

R74 4.7K

C54

0.1uF

C88

6.8nF

B

C87

47uF16V

C4 0.1uF

R167 100

C26 0.1uF

C149 0.1uF

R170 1K

UOC_VIFIN1

UOC_VIFIN2

UOC_SIF1

UOC_SIF2

C57 2.2uF
C245 2.2uF

C58 220nF

C59 2.2uF

C60 2.2uF

TV_VSYNC

R76 39K

C89 330nF

C90

0.1uF

C5 0.1uF

C139 0.1uF

C29 0.1uF

C30 0.1uF
C31 0.1uFR63 0

C32 0.1uF

C150 0.1uF

C61 2.2uF
C246 2.2uF

MUTE

R93 100K

IFGND

R94 1K

C91 4.7uF

C92 3.3nF

IF_OUT

A

FB50

IFGND

VCC5A V1_8V2

1 2

FB43

R118

2.2K

R119 2.2K

C103

10nF

IFGND

R120
1K

IFGND

78

79
80

77

70
71

72
73

55
58
51
59
52

48
24

25
29
30

53
54
56
57
21
19

49
50

34
35
33

23
22
20

27
26

32
28

17
16

38

39
91
13

U2B

R3/Pr

G3/Y
B3/Pb

FBLIN

V/R2/Pr
U/B2/Pb
Y/G2/Y

YSYNC

CVBS2/Y2
CVBS3/Y3
CVBS4/Y4
C2/C3
C4

SVO/CVBSI
VIFIN1

VIFIN2
SIF1
SIF2

AUDIO2_INL
AUDIO2_INR
AUDIO3_INL
AUDIO3_INR
EWD/AVI
SECPLL

AUDIO4_INL
AUDIO4_INR

AUDIO5_INL
AUDIO5_INR
SSIF

VDRA
VDRB
DECBG

IREF
VSC

EHT
GNDIF

PH1LF
PH2LF

DECSDEM
QSSO

REFAD
VGUARD

D9

BA792

Q7

2N3904

UOUT/INSSW2

AUDIO_OUT_LSL

AUDIO_OUT_LSR
AUDIO_OUT_HPL

AUDIO_OUT_HPR

TDA15021H_2

YOUT

VOUT/SWO1

CVBSO/PIP

ROUT

GOUT

BOUT

BCLIN

BLKIN

SVM

FBISO

HOUT

AGC

IFVO

FMRO
PLLIF

SIFAGC

AGC2SIF

AUDOUTSL
AUDOUTSR

INT0

P00/I2SDI1/0

P01/I2SDO1
P02/I2SDO2

P03/I2SCLK

P04/I2SWS

P10/INT1

P11/T0

P12/INT2

P13/T1
P14/RX
P15/TX

P16/SCL

P17/SDA

P20/TPWM
P21/PWM0
P22/PWM1
P23/PWM2
P24/PWM3
P25/PWM4

P30/ADC0
P31/ADC1
P32/ADC2
P33/ADC3

R125
10K

IFGNDIFGND

74
75
76

64
85

86
87

83

84
65
66

67

31
43
44

41

42

46

36
37

60
61
62

63
97

106
105
104
103
102

98
99
126
107
127
128
108
109

111
112
113
114
122
123

115
116
119
120

1

2

1

2

R126 10K

R67 100
R68 100
R69 100

C33 4.7uF/50V

C34 1nF

R70 100
R71 27K

R66 2.7K

R72 680

C35 10nF

R77 390

C62 1uF/50V

C63 1uF/50V

100

R168

100

R169
R227
R228

R80 100

R81 100
R82 100

R114
R229
R230
R231
R232 100

R233 100

R98 47
R99 47

R97

100

R100

100

R234

100

R96

100
R235 100
R236

100

R237 100

R101 100

R238 100
R95 100

T1

K3953M

SAW

3

IFGND

T2

K9656M

SAW

3

IFGND

Y_OUT

VCC5A

C64 0.1uF

C140

10uF16V

C141

10uF16V

100
100

100
100
100
100

R212 100
R213

R214
R215
R216 100

R103 10K
R104 10K

4

5

4

5

SC_AUD_LOUT
SC_AUD_ROUT

M_LOUT

M_ROUT
HP_LOUT

HP_ROUT

100

100
100

R1073.3K

R1023.3K

R1833.3K

R1063.3K

SAW_SW

VCC5

Y_OUT
U_OUT
V_OUT

TV_R
TV_G
TV_B

SANDC

TV_HSYNC

AGC

C98220pF

VCC5

UOC_VIFIN1

UOC_VIFIN2

UOC_SIF1

UOC_SIF2

SAW_SW

V3_3D

R2103.3K

R1163.3K

R1173.3K

R1153.3K

SCL_UOC
SDA_UOC

LED_RED

LED_GREEN

ON_PANEL

EN_DPF_DVD

ON_BACKLITE

STAT_AV
HP_IDENT

DVD_KEY_DEC

TV_KEY_DEC

R833.3K

R84

3.3K

R853.3K

VCC5

R873.3K

R863.3K

SCL_UOC

SDA_UOC

R883.3K

R246
0

VCC5

R893.3K

R903.3K

TV_IR

PWRON

TV_DPF_SW

ASTB

HD_PC_SW

RST_MST
SCL_DPF

SDA_DPF

INT_MST
CSZ_MST

SDA_MST

SCL_MST

6
5
3
2
1

VCC5A

V3_3D

V1_8V1

SCL
SDA
A2
A1
A0

24LC32A

U2A

V3_3D

C100

0.1uF

0.1uF

VDD5A_1

15

18
47

40
82

81

12

88

110

118

C247

100uF16V

C107
220nF

1

4

5

6
7

8
9

FB42

VDD5A_1

GNDA1
VDD5A_2

GNDA2
VDD5A_3

GNDA3
GNDA
VDD3A

GNDA

VDD3

VDDP

VDD18

VREF_SDAC1

GREF_SDAC1
VREF_SDAC2

GREF_SDAC2
VREF_SDAC3

VCC5

C106

47uF16V

TDA15021H_1

3

C151

0.1uF

R243 10K

R129
10K

C42

0.1uF

VDD5A_2

C43

0.1uF

C44

0.1uF

C75

0.1uF

C76

220nF

C77

0.1uF

V1_8DIG

C78

0.1uF

C97

DECDIG

VDDC
VDDC
VDDC

VSS_REF

VCOMB

VSSCOMB

VADC

VSSADC

VDDA

GNDAUD

VDDC

VDD3A

V8SWTCH

DECDIG

XOUT

4

4

VSSC
VSSC
VSSC

VREF

VSSC

XIN

U22

GND1OUT2VIN

NCP1117DT18RK

Title

124
100
117

101
121
125

90

89
69

68

96

95

93

92

3
94

2
45

14

10

11

Q26

2N3904

FB8

C36

0.1uF

C37

0.1uF

C38

0.1uF

C67

0.1uF

C68

0.1uF

C69

0.1uF

C70

0.1uF

V3_3D

C94

0.1uF

U4

VCC

GND

WP

FB20

VCC5

8

C95

4

0.1uF

7

3

C39

47uF16V

FB9

C40

47uF16V

FB10

C41

10uF16V

FB13

FB14

C72

10uF16V

FB15

C73

10uF16V

FB16

C74

10uF16V

C96

100uF16V

4321

C49

C48

C47
680nF

C45
220nF

C46

0.1uF

C79
220nF

C80
220nF

FB17

C81

100uF16V

0.1uF

C99

33pF

Select Y2 - Saronix 9922 520 20264

Q9
Si2311DS

V1_8V1

C85

DECDIG

24.576M

680nF

R211
10

C51

100uF16V

FB18

FB19

FB56

VDD5A_2

Y1

C248

100uF16V

FB12

680nF

V3_3D

VCC5A

V1_8V2

C82

0.1uF

C83

0.1uF

V3_3D

C84

0.1uF

C101
33pF

V1_8V1

C152

0.1uF

LS07-EU-UOCIII TAD12021H

V1_8V1

C52

100uF16V

D

V1_8V2

C

B

A

Model No.: LCT-20CHST
Version: 1.0

-41 -

U17

MC78M08CDT

VCC

YOU
UOUT
VOUT

DECDIG

ADR

TP

VEE

NC
NC
NC

C114

100uF16V

4321

C115

0.1uF

20

19
17

16

C119

15

7

0.1uF

10
18
2
23
24

Y_INU_OUT
U_IN
V_IN

D

C

B

A

D

ECBP2012M700T

DPF_RIN

DPF_GIN

DPF_BIN

FB6

ECBP2012M700T

FB7

ECBP2012M700T

FB11

R4

75

C93

12pF

R5

75

C102

12pF

R6

75

C

TV_R

VCC5A

FB44 ECB2012M800T

C108 10uF16V

C250

22pF

R130

4.7K

R131
10K

Q12

2N3904

R133
470

C238

10uF16V

R134

FB45 ECI2012M2R2KT

75

C253
470pF

C237

0.1uF

C254
470pF

R137

TV_G

B

C116 10uF16V

C251
22pF

4.7K

R138
10K

Q14

2N3904

R141
470

R142

FB46 ECI2012M2R2KT

75

C255
470pF

C256
470pF

TV_B

A

C117 10uF16V

C252
22pF

R139

4.7K

R148
10K

Q15

2N3904

R150
470

R151
75

FB47 ECI2012M2R2KT
C257

470pF

C258

470pF

C105

12pF

R239 75

R240 75

R241
75

VCC5A

FB37 ECB2012M800T

C153

0.1uF

C249

10uF16V

12Va

V3_3M

147

74LVC126A

FB23

C112
100uF16V

U10A

32

74LVC126A

U10C

89

74LVC126A

65

74LVC126A

1112

Y_OUT

V_OUT

SANDC

SDA_UOC

SCL_UOC

R145 100
R146 100
R147 100

C113

0.1uF

C154

0.1uF

16

U20

2

S1A

3

S2A

VCC

R57

4

DA

5

S1B

6

S2B

7

DB

14

S1C

13

S2C

12

DC

11

S1D

10

S2D

9

DD

1

IN

15

/EN

GND

PI5V330A

8

DPF Signal Input

J10

13
12
11
10

9
8
7
6
5
4
3
2
1

CON13

R58 100

R59 100

TV_DPF_SW

100

C234 47nF

C235 47nF

C236 47nF

TV_DPF_SW

DPF_BIN

DPF_GIN

DPF_RIN

DPF_VSIN
DPF_HSIN

TV_DPF_RIN

TV_DPF_GIN

TV_DPF_BIN

0: Select TV
1: Select DPF

FB54

ECBP2012M801T C264 220pF

C264,C265 option (open for better phase)

FB55

ECBP2012M801T

V3_3M

R15

3.3K

R14
10K

Q2
2N3904

1

R140 1K

R132 10K

10

R149 1K

C265 33pF

R182 2.2K

4 U10B

TV_VSYNC

13 U10D

TV_HSYNC

1 2 3

4

4

IN1GND2OUT

3

U7

6

YIN

8

UIN

9

VIN

1

SC

14

SDA

11

SCL

3

ADCEXT1

4

ADCEXT2

5

ADCEXT3

TDA9178T

R122 75

R121 75

TV_DPF_VSIN

TV_DPF_HSIN

Title

LS07-EU-MUX/AUDIO AMP/TDA9178

Model No.: LCT-20CHST
Version: 1.0

-42 -

VAD

VDPLL

VPLL VPO

VDD

48

56

54

58

D

G_RIN
G_RM
G_GIN
G_GM
SOGIN1
G_BIN

G_BM
PC_HSIN
PC_VSIN

C142

0.1uF

TV_DPF_RIN

TV_DPF_RINM

TV_DPF_GIN

TV_DPF_GINM

TV_DPF_BIN

TV_DPF_BINM
TV_DPF_HSIN
TV_DPF_VSIN

R123 0

CSZ_MST
SCL_MST
SDA_MST
RST_MST

INT_MST

VAD

R175 390

R124 10K

C

C143

0.1uF

C263

0.1uF

Option: C263 and R123

B

J15

CON6

6
5
4
3
2
1

Only for Debug

CSZ_MST
SCL_MST
SDA_MST
RST_MST

VCC5

C144 22pF

Y2

14.318MHZ

C145 22pF

U3

75
74
72
71
73
70
69
38
39
30
29

65
66
63
64
62
60
61
40
41

79
78

80
55

125

82
84
83
33
85

91
92
93
94
95
96
97
98

31
32

86
87

34

35

2

A

C262 0.1uF

77

AVDD

AVDD

AVDD

RIN0
RIN0M
GIN0
GIN0M
SOGIN0
BIN0
BIN0M
HSYNC0
VSYNC0
DDC_CLK
DDC_DAT

RIN1
RIN1M
GIN1
GIN1M
SOGIN1
BIN1
BIN1M
HSYNC1
VSYNC1

REFP
RMID

REFM

REXT
BUSTYPE

ALE/CSZ
RDZ/MST_SCL
WRZ/MST_SDA
HWRESETZ
INT

AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7

DDCROM_CLK
DDCROM_DAT

PWM0
PWM1

XIN

XOUT
BYPASS

GND1GND

GND20GND42GND45GND51GND57GND76GND81GND89GND

9

1 2 3 4 5 6

36

AVDD

AVDD_PLL

AVDD_MPLL

GND21GND

37

111

129

VDDP88VDDP99VDDP

MST518

GND

59

139

VDDP

VDDP

151

22

VDDP

VDDP10VDDC

VDDP

GND

100

101

112

102

114

142

VDDC
RA0/LVACKP

RA1/LVACKM

RA3/LVA2M
RA5/LVA1M
RA7/LVA0M

GA7/LVA3M

OCLK/LVBCKP

LDE/LVBCKM

LVS/LVB3M

BB1/LVB2M

BB3/LVB1M
BB5/LVB0M

GND

GND

113

130

19

VDDC

VDDC

RA2/LVA2P
RA4/LVA1P
RA6/LVA0P

GA0
GA1
GA2
GA3
GA4
GA5

GA6/LVA3P

BA0
BA1
BA2
BA3
BA4
BA5
BA6
BA7

LHS/LVB3P

RB0
RB1
RB2
RB3
RB4
RB5
RB6
RB7
GB0
GB1
GB2
GB3
GB4
GB5
GB6
GB7

BB0/LVB2P
BB2/LVB1P

BB4/LVB0P

BB6
BB7

GND

GND

GND

140

141

152

GND

V3_3M

131

RA0

132

RA1

133

RA2

134

RA3

135

RA4

136

RA5

137

RA6

138

RA7

115
116
117
118
119
120
127

GA6

128

GA7

103
104
105
106
107
108
109
110

145
146
143
144

RB0

15

RB1

16

RB2

17

RB3

18
23

RB4
RB5

24

RB6

25

RB7

26

GB0

5

GB1

6

GB2

7

GB3

8

GB4

11

GB5

12
13

GB6
GB7

14

BB0

147

BB1

148

BB2

149

BB3

150

BB4

153

BB5

154

BB6

3

BB7

4

RB[0..7]
GB[0..7]
BB[0..7]

RXCLK+
RXCLK-

RX2+

RX2-

RX1+

RX1-

RX0+

RX0-

RX3+

RX3-

PCLK

PDEN
PHSYNC
PVSYNC

RB[0..7]
GB[0..7]
BB[0..7]

R186
100

R187
100

R188
100

C156

C157

C158

47nF

47nF

47nF

ECBP2012M801T

V2_5M

ECBP2012M801T

V3_3M

ECBP2012M801T

V3_3M VPLL

ECBP2012M801T

V3_3M

ECBP2012M801T

TV_DPF_RINM

TV_DPF_GINM

TV_DPF_BINM

Title

FB26

FB30

FB27

FB28

FB29

10uF16V

10uF16V

10uF16V

10uF16V

VPO

VDD

VAD

C162

C170

C175

C178

10uF16V

R189
100

R190
100

R191
100

C164

C163

0.1uF

0.1uF

C171

C172

0.1uF

0.1uF

C176

C177

0.1uF

0.1uF

C179

0.1uF

VDPLL

C180

LS07-EU-MST518

C165

0.1uF

C173

0.1uF

C260

0.1uF

C159
47nF

C160
47nF

C161
47nF

0.1uF

0.1uF

0.1uF

C181

0.1uF

C166

C174

C261

C167

0.1uF

C168

0.1uF

G_RM

G_GM

G_BM

654321

C169

0.1uF

C259

0.1uF

D

C

B

A

Model No.: LCT-20CHST
Version: 1.0

-43 -

D

RX0­RX0+

RX1­RX1+

RX2­RX2+

RXCLK-

RXCLK+

RX3­RX3+

C

PHSYNC
PVSYNC

PDEN
PCLK

RB[0..7]

RB[0..7]

GB[0..7]

GB[0..7]

BB[0..7]

BB[0..7]

B

A

R143

RA7
RA6

RA5
RA4

RA3
RA2

RA1
RA0

GA7
GA6

RB0
RB1
RB2
RB3
RB4
RB5
RB6

GB0
GB1
GB2
GB3
GB4
GB5
GB6
GB7
BB0
BB1
BB2
BB3
BB4
BB5
BB6
BB7

VLCD

0

1
2
3
4
5
6
7
8

9
10
11
12
13
14
15
16
17
18
19
20

DF14-20P-1.25H

R127 33
R128 33
R135 33
R136 33

1

RN1

2
3
4 5
1

RN2

2
3
4 5
1

RN3

2
3
4 5
1

RN4

2
3
4 5
1
2
3
4 5
1

RN6

2
3
4 5

J16

VCC
VCC
GND
GND
RxE0­RxE0+
GND
RxE1­RxE1+
GND
RxE2­RxE2+
GND
RxEC­RxEC+
GND
RxE3­RxE3+
GND
GND

8
7
6

8
7
6

8
7
6

8
7
6

8RN5
7
6

8
7
6

C279
33pF

33 OHM

33 OHM

33 OHM

33 OHM

33 OHM

33 OHM

C278
33pF

C277
33pF

C276
33pF

CN1
33pF

CN4
33pF

CN2
33pF

CN5
33pF

CN3
33pF

CN6
33pF

J22

DP13-40DP-1.25V

BBO0
BBO1
BBO2
BBO3
BBO4
BBO5
BBO6
BBO7RB7
GBO0
GBO1
GBO2
GBO3
GBO4
GBO5
GBO6
GBO7
RBO0
RBO1
RBO2
RBO3
RBO4
RBO5
RBO6
RBO7

123456789

PHSO
PVSO
PDEO
PCLKO

BBO[0..7]

GBO[0..7]

RBO[0..7]

10111213141516171819202122232425262728293031323334353637383940

RBO0
RBO1
RBO2
RBO3

RBO4
RBO5
RBO6
RBO7

GBO0
GBO1
GBO2
GBO3

GBO4
GBO5
GBO6
GBO7

BBO0
BBO1
BBO2
BBO3

BBO4
BBO5
BBO6
BBO7

VLCD

PCLKO

PDEO

PVSO
PHSO

10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50

PDEO

J17 FH12-50S-0.5SH

1

NC

2

NC

3

GND

4

GND

5

B0

6

B1

7

B2

8

B3

9

GND
B4
B5
B6
B7
GND
G0
G1
G2
G3
GND
G4
G5
G6
G7
GND
R0
R1
R2
R3
GND
R4
R5
R6
R7
GND
DCLK
GND
DE
GND
VSYNC
HSYNC
GND
VCC
VCC
VCC
VCC
GND
GND
NC
NC
NC

LR

Title

VLCD

LS07-EU-15" 17" 20" LCD Panel

1 2 3 4 5 6

654321

D

C

B

A

Model No.: LCT-20CHST
Version: 1.0

-44 -

C132
470uF25V

C50
470uF25V

654321

FB24

ECB2012M800T

To L_SPK

J13

2 HEA

PGND

FB59

ECB2012M800T

To R_SPK

PGND

1
2

J14

1
2

2 HEA

D

12V

C

12V

B

A

D

HP_ROUT

C

HP_LOUT

B

VCC5A

C104

470nF

C267

470nF

C229
470nF

FB22

ECB2012M102T

R197

5.6K

R199
15K

R198

5.6K

R201

15K

C109

22uF16V

3

2

5

6

C110

0.1uF

84

+

­TDA1308

R108

3.3K

C268 680pF

+

-

TDA1308

R181

3.3K

C269 680pF

U5A

U5B

VCC5

R176

1

7

C111

100uF16V

C118

100uF16V

12V

1K

R177

3.3K

R144

220

Q3

2SA1162

HP_IDENT

To Headphone

ASTB

MUTE

D16

R165
33K

J12

1
2
3
4
5
6

CON6

R245

4.7K

C293

220uF16V

IN4148

12V

R163
100K

R156

4.7K

R164

22K

M_LOUT

R161
10K

Q27
2N3904

2N3904

12V

Q5

2N3904

C295 4.7nF

R158

R157 2.2K

R162

8.2K

Q16

M_ROUT

R30
10K

C66

47uF16V

R160
R159 1.5K

C296 4.7nF

1.5K

2.2K

C126 220nF

C127 220nF

100uF16V

C128

C27 220nF

220nF

C28

100uF16V

C25

18
17

10
11

3

5

4

18
17

10
11

3

5

4

U8

IN1+

IN2­MODE
SVRR

SGND
PGND
PGND

TDA1517AWT

FB48

IN1+

IN2­MODE
SVRR

SGND
PGND
PGND

TDA1517AWT

U21

FB60

VDD

VDD
OUT1A
OUT1B
OUT2A
OUT2B

OUT1A
OUT1B
OUT2A
OUT2B

NC
NC
NC
NC
NC
NC
NC

VDD
VDD

15
16
8
9
12
13
1
2
6
7
14
19
20

PGND

15
16
8
9
12
13
1

NC

2

NC

6

NC

7

NC

14

NC

19

NC

20

NC

PGND

C130

C131

PGND

PGND

C129

0.1uF

470uF16V

C19

0.1uF

470uF16V

A

Title

LS07-EU-Sound Amplifier and Headphone

1 2 3 4 5 6

Model No.: LCT-20CHST
Version: 1.0

-45 -

D

JP1

+12V
+12V

GND
GND

4PIN_POWER

12V

C186

0.1uF

JP2

DAP

12V

1
2

3

C187
470uF25V

1

U9
LM2596-5.0

Vin

5

Feedback

ON/OFF

3

output

GND

4
2

D12

1N5824

L3

68uH

1000uF16V

C188

C189

0.1uF

L4

TEM2011

C190

0.1uF

VCC5

C191
470uF16V

C192

1uF/50V

C193

1uF/50V

C194

1uF/50V

12Va

1

D13

BAV99

D14
BAV99

D15
BAV99

C196
1uF/50V

C197
1uF/50V

C195

1uF/50V

R192

2.2K

+34V

3

2
1

3

2
1

3

2

EN_DPF_DVD

12V

C134

0.1uF

VCC5

R166 3.3K

1

C292

470uF25V

R28 10K

U23
LM2596-5.0

Vin

5

Feedback

ON/OFF

Q4

2N3904

output

3

GND

4

2

D17

1N5824

68uH

L6

C294

1000uF16V

C

VCC5

C200

0.1uF

FB31

C201
100uF16V

C202

0.1uF

4

4

U13

NCP1117DT33RK

GND1OUT2VIN

3

C203
220uF16V

V3_3D

C205

0.1uF

VCC5_SW

C206

0.1uF

FB33

C207
100uF16V

C208

0.1uF

4

U14

4

LM1084-3.3V

GND1OUT2VIN

3

C210
220uF16V

V3_3M

12V VCC5A

R19

C211

0.1uF

C212

0.1uF

RY21-2W-6.8

C213

470uF25V

0.1uF

4

4

IN1GND2OUT

3

U18

MC7805CD2T

C215

0.1uF

R193

10K

R200 10K

C223

0.1uF

4

U15

4

LM1117-2.5V

GND1OUT2VIN

3

C225

100uF16V

V2_5M

C226

0.1uF

SAMSUNG 15"17" : +3.3V LG 17" 20": +12V

FB39

ECBC2012M800T

V3_3M

ECBC2012M800T

AU 20": +5V

VCC5

FB40

B

PWRON

12V 12Va

C219 0.1uF

R195 10K

R194 10K

PWRON

U11B

6

3

5

4

IRF7316

Q20
2N3904

C220

0.1uF

FB36

C222

100uF16V

Q24

2N3904

VCC5

R196

3.3K

R204 2.2K

ON_BACKLITE

ON_PANEL

R206 3.3K

A

C228 0.1uF

R203 10K

R202 10K

VCC5_SWVCC5

U11A

8

1

7

IRF7316

2

Q22
2N3904

To Inverter

J18

CON6

12V

1
2
3
4
5
6

R242
0

PWRON

12V

ECBC2012M800T

C230 0.1uF

R207 10K

!

Stuff one of FB39,FB40,FB41 for different Panel

FB41

U19

1

S

2

S

3

S
G4D

NTMS10P02R

Q25

2N3904

Title

1 2 3 4

4321

Power Supply to DPF or DVD

PW_DPF_DVD

C243

0.1uF

SDA_DPF

SCL_DPF

U12B

6

3

4

C231

0.1uF

IRF7316C214

Q21
2N3904

5

VLCD

C232

100uF16V

C216

0.1uF

8

D

7

D

6

D

5

LS07-EU-POWER SUPPLY

J19

1
2
3
4
5
6
7
8

CON8

C217

0.1uF

D

C

C218

100uF16V

B

VLCD

A

Model No.: LCT-20CHST
Version: 1.0

-46 -

D

VCC5

C65

0.1uF

VCC5

C

UPDATE CON= +5V, VGA CONNECT WITH UOC

UPDATE CON= 0V, VGA CONNECT WITH DDC

UPDATE_CON

R18

4.7k

R17
10k

Q6
2N3904

SDA_UOC
DDC_SDA

VGA_SDA

U24

1
2
3
4
5
6

MC14016BDR2

IN1

VCC

OUT1

CON1

OUT2

CON4
IN2
CON2
CON3
GND7IN3

IN4
OUT4
OUT3

14
13
12
11
10
9
8

SCL_UOC
DDC_SCL

VGA_SCL

B

A

Title

LS07-EU-VGA PORT UPDATE PROGRAM

1 2 3 4

4321

D

C

B

A

Model No.: LCT-20CHST
Version: 1.0

WIRING DIAGRAM

-47 -

Model No.: LCT-20CHST
Version: 1.0

EXPLODED VIEW

1. Connect each wiring horness and plug with cord according to final wiring connection
diagram.

2. The assembly position of each wiring horness and plug with card are confirmed by
technologist and fix then at proper location.

3. The paste location of certificate and breakable label is confirmed by technologist
make sure the consistency of location.

4. Suspending panel is covered by protective film.

5. Paste insulative board onto transition assembly, then install built-in power supply
module.

6. Check if each bottom could mark, if so, protect the four corners of the front frame with
blue adhesive tape. The method is confirmed by technologist.
Make sure the side with mark "O" should be forward the display panel then installing the
power supply switch.

-48 -

The wiring connection diagram of
power supply socket

Put on

Umber

Blue

Wiring horness

Yellow/ green

Model No.: LCT-20CHST
Version: 1.0

-49 -

PART LIST

NO PART NAME

1 Chassis assembly

2 Front frame assembly

3 Front frame assembly

4 Back cover assembly

5 Base assembly

10 Tapping screw 3x10

11 Tapping screw 3x8

12 Tapping screw 3x6

13 Screw assembly M3x8

14 Screw assembly M4x6

15 Clip (RJ050)

Model No.: LCT-20CHST
Version: 1.0