AOC LS01 Diagram

LCD COLOUR TV

SERVICE MANUAL

CHASSIS NO.: LS01

Please read this manual carefully before service.

Catalog

Chapter1 Specifications and Composition.......................................................3

Chapter2 Function Introduction of Main IC ...................................................7

Chapter3 Analysis of Signal process Flowchart and key point

measure date

....................................................................................................29

Chapter4 Maintenance Procedure and Examples of Typical

troubleshooting

..............................................................................................39

Chapter5 Spare Part Lists.............................................................................................40

Chapter6 Factory Setup and notice...................................................................... 41

Appendix: 1. Circuit Schematic diagram

2. Circuit Schematic diagram of power module

3. Final Assembly diagram

4. Wiring diagram of LCD TV with LS01 chassis (take LT32GJ01E

as an example)

Chapter 1: Specifications and Composition

1. Models for LS01 chassis :

Region Europe America Other regions

LT26GJ01U LT32GJ01U

LT37GJ01U LT26GJ12U

LT32GJ12U LT37GJ12U

LT26GJ88U LT32GJ88U

LT37GJ88U

Original

Models

LT26GJ01E LT32GJ01E

LT37GJ01E LT26GJ12E

LT32GJ12E LT37GJ12E

LT26GJ88E LT32GJ88E

LT37GJ88E

2. Main Feature

Region Europe America Other regions

Color

RF signal

Video or Y/C signal PAL、NTSC、SECAM PAL、NTSC、SECAM PAL、NTSC、SECAM

Program presetting 100 （0-99）

Audio output（THD≤ 7%） Power source 100V～240V 100V～240V 100V～240V Teletxt 100 pages X 100 pages CCD X Yes X Sound demodulator NICAM、IGR BTSC NICAM、IGR SCART Yes X X VGA Ye s Yes Yes YPb Pr Yes Ye s Ye s HDM I Yes Yes Yes Ear p h on e Yes Yes Yes

OSD language

Auto Off without Signal Reception Program booking 5 program booking. Turn to the corresponding program at the booking time. Swap Customer could rearrange the channels according to personal habit Energy saving system Customer could adjust LCD screen backlight brightness manually to save energy.

Plug and Play

system Sound system

PAL 、SECAM NTSC、PAL M 、PAL N PAL 、NTSC、SECAM

D/K、B/G、I、L/L’ M D/K、B/G、I、M

68 （AIR：2-69） 125 CABLE：1-125）

5W+5W 5W+5W 5W+5W

English, French, German, Italian, Portuguese etc.

5 minutes

LCD TV could be used as computer screen, no need for the installation of software, which is Plug and Play in real sense

English, French, Portuguese, Spanish etc.

3. Unit IC Compositions：

LT26GJ01A LT32GJ01A

LT37GJ01A LT26GJ12A

LT32GJ12A LT37GJ12A

LT26GJ88A LT32GJ88A

LT37GJ88A

236 （0-235）

English, French, German, Spanish etc.

LCD TV with LS01 chassis is made up of switch power, system control circuit, video

processing circuit, audio processing circuit, Power Amplifier circuit, AV input circuit, LCD screen

module. Block circuit diagram is shown as below:

1) European market:

2). American and Asian market:

4. Introduction of PCB module

LCD TV with LS01 is made up of power board, side AV board, remote control reception

board, key board, and mainboard. The table below is the introduction of the function of all

printed board modules.

No. Parts Description

Mainboard module is the core of LCD TV signal processing. Under the control

of the system control circuit, It undertakes the task of converting the external

input signal into the unified digital signal that the LCD screen could identify.

Mainboard controls the whole machine through IIC bus, decode VIDEO

Mainboard

module

signal, controls the Video (brightness, contrast, chroma, hue, definition etc),

white balance adjusts, generates OSD, de-interlaces signal, converts signal

frequency, and finishes signal A/D and D/A conversion, video enhancement,

LVDS signal coding and output; it has Scart , S-Video, AV , YPbPr, HDMI and

PC interface, Tuner input, sound demodulation, sound processing, sound

power amplifier, and online update.

Remote

reception

module

Built-in powe

board module

Keyboard

module

LCD screen

module

Side AV

board

The remote reception board module is constituted by an indicator-light and a

remote reception. Customer could manipulate the LCD TV by using remote

controller very conveniently. By the color of the indicator light, the operation

mode of the LCD TV could be judged (red is standby, green is power on).

Convert the 100V～240V （50/60HZ）AC into DC, output have +24v, +12V,

+5V, and the +5V_STB in standby state.

Keyboard module has 7 function keys (program +/-, volume +/-, AV/TV,

menu ,power), customer could use the key to operate the TV freely.

LCD screen has built-in inverter that convert DC into high voltage AC signal to

turn on the backlight CCFL (Cold Cathode Fluorescent Light); the LCD screen process the video signal from signal board and reappear.

Side AV board is used for earphone output.

Chapter 2: Function Introduction of Main IC

1. Main ICs and functional modules of LS01 chassis

No. Item no. Model Main function

1 U15 JS-6H2/121 Tuner output sound IF and video signal

2 U1 SVP-CX32LF

3 U2 IS42S32200C1-6TL SDRAM with 2MX32bits

4 U3 AT24C64A-10PU-2.7 EEPROM

5 U4 T5BS4-9999 MCU

6 U5 SST39VF040-70-4C-NHE Flash, Store the Control program.

7 U6 74ALVC573PW Address latch, to latch the address wires

8 U8 TCM809SENB713 Hardware reset IC of MCU

9 U9 74HCT4052D Audio input switch of AV terminal

10 U35 STV-8217/STV-8218 Audio signal processor

11 U14 74LVC14AD

12 U16、U25 AT24C02BN-10SU-1.8 EEPROM

14 U18、U22 AZ1117H -1.8TRE1 3.3V to 1.8V DC conversion

16 U19、U24 AZ1117H -3.3TRE1 5V to 3.3V DC conversion

Video decoder, image processor, A/D and D/A conversion

VGA line and field synchronizing signal waveform shaping

18 U20 AZ1084S -3.3TRE1 5V to 3.3V DC conversion

19 U21 AZ1084S -1.8TRE1 5V to 1.8V DC conversion

20 U23 AZ78L08ZTR-E1 12V to 8V DC conversion

21 U26 CS4344-CZZ HDMI digital audio decode, DAC

22 U28、U29 Rclamp0514M.TBT ESD protection device of HDMI

24 U30 ANX9011L HDMI digital signal decode

25 U31 PI5C3306LE (SDA, SCL) used for program update

26 U33 TDA8944J Audio amplifier (BTL output)

2. Function introduction of ICs or functional module of LCD TV with LS01chassis

1.Tuner (JS-6H2/121 or CDT-6GPL22-00) Pin No. Definition of pin Function description

1 NC No connection 2 BT No connection 3 VCC +5V power 4 SCL IIC bus (clock) 5 SDA IIC bus (data) 6 AS Ground 7 AFS Ground 8 NC No connection 9 NC No connection 10 NC No connection 11 SIF/Out Sound intermediate Frequency output

12 Video/Out CVBS signal output

13 VCC（+5V） +5V power

14 Audio/Out Audio signal output

2. Image processing IC SVP-CX32LF

The SVPTMCX video processor is a highly integrated system-on-a-chip device, targeting the

converging HDTVready and PC-ready LCD TV, PDP TV applications where high precision

processing of video and data are the requirements. SVPTMCX contains 6th generation

dual-purposed triple 10-bit high-precision and high speed video ADCs for both PC and video

inputs, the high-performance multi-format 3D digital comb video decoder that supports NTSC,

PAL, and SECAM*, a HDTV sync separator, motion adaptive de-interlacing engine, and the

video format conversion engine, supporting multi-window display in many different output

modes. Trident’s DCReTM – Digital Cinema Reality engine, is integrated inside the SVPTMCX

family to provide the most natural cinema-realistic images. The DCReTM technology integrates

advanced 3D-comb video decoding, advanced motion adaptive de-interlacing, object-based

digital noise reduction, advanced 6th generation scaler, film mode support, average picture

level (APL), edge smoothing and dynamic sharpness enhancement. Trident's patented Unified

Memory Architecture (UMA) that allows frame rate conversion, 3D comb video decoding, and

video enhancement processing to share the same memory buffer that is made up of high-speed

and cost-effective PC graphic memory. All these advanced digital processing techniques

combined with a true 10-bit video data processing for the most optimal video fidelity to provide

the most natural and cinema quality video images. Designed for maximum system design

flexibility, SVPTMCX integrates all video interfaces to support converging digital video, analog

video, and PC data applications. The users of Trident's single chip SVP™CX series video

processor(s) will benefit from many features while maintaining a price competitive advantage

over the existing solution(s)

Main features:

●Integrated 6th Generation Motion and Edge Adaptive De-interlacing

● Integrated ADC

● PC auto tune

●Built-in 8-bit LVDS Transmitter

● 6th generation cubic-4 image scaling engine

● Advanced Chroma Processing and Dynamic Contrast Function

● Green color stretch, blue color stretch, skin color enhancement

●Integrated 6th Generation Motion Adaptive 3D Digital Comb Video Decoder with

Programmable Filter

●60Hz～100Hz interlaced scanning and 50Hz～75Hz progressive scanning

● frame rate conversion

● 14D： dynamic picture enhancements

● Advanced Film Mode Recovery-3:2/2:2 pull down

● Build-in A/D conversion function

● Teletext function

● Supports 16/32bits SDRAM memory interface

● Multi-screen display mode

● OSD and VBI/Closed caption and advanced OSD engine

Pin function description:

Pin No. Designation of pin Function of pin

Analog signal input/output terminal

169 CVBS1 CVBS input 1

180 Y_G1 Y input

181 Y_G2 SCART1 Green signal input

182 Y_G3 S-Video Y signal input

183 PC_G PC Green signal input

188 PR_R1 DVD interface Pr signal input

189 PR_R2 SCART1 Red signal input

190 PR_R3 SCART2 Y signal input

191 PC_R PC Red signal input

192 C S-Video C signal input

196 PB_B1 DVD interface Pb signal input

197 PB_B2 SCART1 Blue signal input

198 PB_B3 SCART1 CVBS signal input

199 PC_B PC blue signal input

171 FS1 No connection

170 FS2 No connection

173 FB1 SCART1 RGB_FB signal input

172 FB2 SCART2 chroma signal input

174 VREFP_1 A/D conversion1 voltage reference +

175 VREFN_1 A/D conversion 1 voltage reference -

184 VREFP_2 A/D conversion 2 voltage reference +

185 VREFN_1 A/D conversion 2 voltage reference -

Digital signal terminal

37 DP0

Digital signal I/O（DP0~DP23）interface

┆ ┆

29 DP8

26 DP9

25 DP10

24 DP11

22 DP12

21 DP13

18 DP14 ┆ ┆

14 DP18

11 DP19 ┆ ┆

7 DP23

CPU control terminal

55 PWMO Pulse width modulation input

57 SCL

58 SDA

IIC（clock） IIC（data）

60 GPIO0 GPIO1 selection signal

59 GPIO1 GPIO2 selection signal

62 WR# CPU write signal

63 RD# CPU read signal

61 CS

56 INTN

CPU chip selection signal（low level effective） Interrupt signal（low level effective）

84 ALE Address latch signal

86 RESET Reset signal (high level effective)

85 V5SF

SF Power（+5V）

4 DP_HS Line synchronization signal

5 DP_VS Field synchronization signal

23 DP_CLK Digital port Clock

6 DP_DE_FLD DE I/O terminal

64 ADDR0 ┆ ┆

CPU address（R0~R7）signal

71 ADDR7

83 A_D0 ┆ ┆

CPU address/data passage

76 A_D7

MISC port control signal

162 CVBS_OUT2 SCART2 interface CVBS signal output

163 CVBS_OUT1 SCART1 interface CVBS signal output

157 TEST MODE Test mode signal (grounding)

158 AIN_HS Line synchronization signal

159 AIN_VS Field synchronization signal

205 XTALI

Crystal oscillator interface

204 XTALO SDRM 控制端口

124 MA0 ┆ ┆

Memory address （A0~A11）

121 MA3

118 MA4 ┆ ┆

113 MA9

125 MA10

126 MA11

156 DQM0

133 DQM1

Memory read/write byte signal

109 DQM2

87 DQM3

128 BA0

Memory stack address selection

127 BA1

130 RAS# RAS signal

131 CAS# CAS signal

132 WE# Memory write pulse

112 CLKE Memory clock pulse

129 CS0# Memory chip selection signal

111 MCK Memory clock signal

155 MD0 ┆ ┆

148 MD7

145 MD8 ┆ ┆

138 MD15

Memory data interface

107 MD16 ┆ ┆

100 MD23

95 MD24 ┆ ┆

88 MD31

LVDS port

52 LVDS_VDDP Power for LVDS

38 PLL_GND PLL ground

39 PLL_VCC PLL power

47 LVDSGND LVDS ground

46 LVDSVCC Power for LVDS

43 TCLK1M

Positive/Negative LVDS differential clock output

42 TCLK1P

51 TA1 M

Positive/Negative LVDS differential data output

50 TA1P

49 TB1M

48 TB1P

45 TC1M

44 TC1P

41 TD1M

40 TD1P

Clock and power

146 VDDM

134 VDDM

Memory port digital power

108 VDDM

98 VDDM

72 VDDH

3.3V power supply

19 VDDH

160 VDDC

136 VDDC

119 VDDC

96 VDDC

1.8V power supply

74 VDDC

53 VDDC

27 VDDC

12 VDDC

13 VSSC

28 VSSC

54 VSSC

75 VSSC

97 VSSC

120 VSSC

137 VSSC

Digital ground

161 VSSC

20 VSSH

73 VSSH

99 VSSM

110 VSSM

135 VSSM

147 VSSM

195 AVDD3_ADC2

ADC analog power (+3.3V)

168 AVDD3_ADC1

2 PLF2 Video PLL clock low pass filtering

207 MLF1 Memory PLL clock low pass filtering

1 PAVSS2 PLL ground

3 PAVDD2 PLL power (+1.8V)

206 PAVSS1 PLL digital ground

208 PAVDD1 PLL digital ground power (+1.8V)

203 PAVSS PLL Digital ground

202 PAVDD PLL digital ground power(+1.8V)

201 PDVSS PLL Digital ground

200 PDVDD PLL digital ground power (+1.8V)

177 AVDD_ADC1

186 AVDD_ADC2

ADC analog power (+1.8V)

193 AVDD_ADC3

178 AVDD_ADC4

176 AVSS_ADC1

187 AVSS_ADC2

ADC analog ground

194 AVSS_ADC3

179 AVSS_ADC4

165 AVDD3_OUTBUF

+3.3V analog power

164 AVSS_OUTBUF

166 AVDD3_BG_ASS

Analog ground

167 AVSS_BG_ASS

SVP-CX32LF internal block diagram:

3．T5BS4-9999 brief introduction:

T5BS4-9999 is a high-speed 16-bit micro-controller designed for the control of various mid- to

large-scale equipment. T5BS4-9999 is ROM-less product, T5BS4-9999 comes in a 64-pin flat

package. Listed below are the features that is used for the control of a variety of small to large

devices. T5BS4-9999 could extend ROM ,64 pins and is packaged in PLCC. It is the main

control IC of the TV via I²C bus.

Main features:

●High speed 16-bit CPU（900/L1 CPU）

● Minimum instruction execution time: 148ns

● Build-in RAM: 10Kbytes

● Expandable up to 16Mbytes

● simultaneously support 8-/16-bit width external data bus

● 8-bit timers: 6 channels, 16-bit timers: 1 channel

●General-purpose serial interface: 1 channel

●Serial bus interface: 1 channel

●10 bit A/D conversion interface: 4 channels

●Watchdog timer

● Timer for real time clock (RTC)

● Chip select/wait controller: 4 blocks

● 34 interrupt signals output

9 CPU interrupt, 21 internal interrupt, 4 external interrupt

● 53 I/O pins

● Standby function

● Clock control

fs=32.768KHz real-time time of time conversion function high frequency fc to fc/16

● Working voltage When fc=27 MHZ, VCC=2.7~3.6V, when fc=10MHZ, VCC=1.8V to 3.6V

● 64 pin package（P-LQFP64-1010-0.50D standard）

Pin assignment description:

Pin introduction:

Pin Designation Function description

AVSS Analog ground

P70/TA0IN I²C data input

3 P71/TA1OUT I²C clock output

4 P72/TA3OUT PAGE signal output

5 P73/TA4IN +5V power

6 P74/TA5OUT Backlight on/off control

7 P80/TB0IN0/INT5 Remote control signal

8 P81/TB0IN1/INT6 +1.8V power supply

9 P82/TB0OUT0 Remote red control signal

10 P83/TB0OUT1 Remote green control signal

11 P90/TXD0 Digital ground

12 P91/RXD0 HDMI identity signal

13 P92/SCLK0/ No connection

14 P93 CON4(10th pin)

15 P94 CON4(4th pin)

16 P95 CON4(3rd pin)

17 AM0 Bus byte selection

18 DVCC +3.3V power

19 X2 Crystal oscillator interface

20 DVSS Ground

21 X1 Crystal oscillator interface

22 AM1 Bus byte selection

23 CPU reset control port

24 P96/XT1 Low frequency oscillation input interface

25 P97/XT2 Low frequency oscillation output interface

26 NMI Interrupt request signal

27 ALE Address latch pulse

28 P00/AD0 ┆ ┆

0~7 bit address/data port

35 P07/AD7

┆

P10/AD8/A8

┆

P17/AD15/A15

8~15 bit address/data port or 8~15 bit address port

P20/A0/A16

8~5 bit address port

┆

P25/A5/A21

or 8~21 bit address port

50 P30/ External memory read control terminal

P31/

External memory write control terminal (AD0~AD7)

52 P32/ Data write control terminal (AD8~AD15)

53 P40/

54 P41/

Internal address selection signal

55 P42/

56 P60/SCK (no connection) 57 P61/SO/SDA I²C data 58 P62/SI/SCL I²C clock

59 P63/INT0 Interrupt request signal

60 P50/AN0

KEY signal port

61 P51/AN1

62 P52/AN2 SCART1 FS signal

63 P53/AN3/ SCART2 FS signal 64 AVCC Analog power （+3.3V）

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