Akira LCT-32CH01ST Schematic
LCD TV
Service Manual
-2 -
MODEL:
LCT-32CH01ST
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IIMMPPOORRTTAANNAATT SSAAFFEETTYY PPRREECCAAUUTTIIOONNSS
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SSPPEECCIIFFIICCAATTIIOONN
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AAPPPPEEAARRAANNCCEE && FFUUNNCCTTIIOONN CCOONNTTRROOLL
No. NAME DESCRIPTION
○1
○2
○3
○4
○5
○6
○7
(1) Headphone Output Port for headphone audio output
(2)
(3) Power Indicator
Notice: In this manual, the icon with “< >” means the button on the remote control, the icon with “[ ]” mean
the button on the LCD TV.
<MENU> Open the menu switch among the menus
<TV / AV>
<VOL+> To increase the sound volume , Adjust functions in menu operation.
<VOL-> To decrease the sound volume, Adjust functions in menu operation.
<CH+>
<CH->
Infrared Receiver
Window
To switch among the signal source of TV, SCART1, SCART2, AV,
S-VIDEO, COMPONENT, VGA and HDMI
1. In TV mode, increase channel number
2. To select functions in menu operation
1. In TV mode, decrease channel number
2. To select functions in menu operation
Enter or leave the standby mode, same as
To receive the signal from remote control
Red indicator lighting, this means the TV is in standby mode; Red indicator (lighting for
10 seconds) and yellow indicator (lighting for 5 seconds) by times, this means the TV is
in standby mode and the time to turning on the TV is set; Green indicator lighting this
means the TV is in normal working condition; Green indicator (lighting for 10 seconds)
and Red indicator (lighting for 5 seconds) by turns, this means the TV is in normal
mode with setting time to turning off or setting the sleeping TV off mode.
on the remote control.
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REAR SIDE OF LCD
No. Name Function
(1) Power Socket AC power input for LCD TV
(2) Switch of AC Power Turn on & Off the AC power of TV
(3) Signal Input / Output
terminal
Terminal Description:
No. Name Description
VGA Connect the VGA signal of computer with this port VGA cable, connect audio signal
○1
S-VIDEO Brightness and chroma signal input, Notice: S-Video and AV can not be used at
○2
COMPONENT
○3
AV AV audio / video signal input terminal
○4
HDMI Port for digital audio & video signal input
○5
SCART1 Video and RGB signal input, Video signal (RF VIDEO signal) output
○6
SCART2 Video and Y/C signal input, Video signal (RF VIDEO signal) output
○7
Headphone
○8
Output
TV Signal input TV signal input port
○9
with VGA’s audio input port by audio cable.
same time for they share of one signal channel.
Connect the TV COMPONENT signal port with video COMPONENT signal from
DVD or other equipments.
Port for headphone audio output
Including audio / video input of AV, S-Video, SCART1, SCART2, Component,
VGA and HDMI.
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REMOTE CONTROL
The buttons of the original remote control are as following:
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OOPPEERRAATTIIOONN
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CChhaarraacctteerriissttiicc ooff CChhaassssiiss
1. Specifications
Region Europe America Other regions
Color
mode
RF signal
Video(or Y/C)signal
Program presetting 100 sets（0-99）
Sound Power （ THD
≤7%）
Power voltage 100V～240V 100V～240V 100V～240V
Graphics and text 100 pages X 100 pages
VCHIP、CCD X Yes X
Sound NICAM、IGR BTSC NICAM、IGR
SCART interface Yes X X
VGA signal input Yes Yes Yes
YpbPr HD signal input Yes Yes Yes
HDMI digital signal
input
Earph o n e Ye s Yes Yes
OSD language
Automatic shut down if
no signal
Program reserve
function
Channel exchange
and sorting
Energy saving function
Plug and Play
Sound
mode
PAL 、SECAM NTSC、PAL M 、PAL N PAL 、NTSC、SECAM
PAL －D/K、B/G、I
SECAM－ L/L’、 D/K、
B/G
PAL ,NTSC ,
SECAM
5W+5W 5W+5W 5W+5W
Yes Yes Yes
Multinational languages
(English, French,
German, Italian,
Portuguese etc)
Automatically enter into standby state after 5 minutes in TV no signal state
Capable of reserving 5 sets program jumping time, if time is up to the reserved time,
automatically jump to the corresponding program
Customer could rearrange the channels according to personal habit
Customer could adjust LCD screen backlight brightness manually. Appropriately
reducing the backlight brightness could save energy.
LCD TV could be used as computer screen, no need for the installation of software,
which is Plug and Play in real sense
NTSC-M/N、
PAL-M/N
PAL ,NTSC ，
NTSC4.43,SECAM
68 sets（AIR：2-69）
125sets CABLE：1-125）
English, French,
Portuguese Spanish
PAL －D/K、B/G、I
SECAM－D/K、B/G
NTSC-M
PAL,NTSC,NTSC4.43,
SECAM
236 sets（0-235）
English, French, German,
Russian
2. Circuit constitution
AKIRA LCD TV with LS01 chassis is made up of switch power, system control circuit, video
processing circuit, audio processing circuit, sound power amplifier circuit, AV input circuit,
LCD screen module. Block circuit diagram of the whole machine is shown as below:
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1) European market:
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2). American and Asian market:
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j
3. Introduction of printed board module
AKIRA 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.
1
Module
Designation
Main
Board
Module
Main Board module is the chassis part 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 MCU bus, decode VIDEO signal, controls the image analog quantity
(brightness, contrast, chroma, hue, definition etc), adjusts white balance, 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 interface, “S” terminal, AV
terminal, Ypbpr, HDMI and PC interface, Tuner input, sound demodulation, sound effect
treatment, sound power amplifier, and online upgrade of program.
Function Description
Remote
2
3
4
5
6 Side AV board Side AV board is used for earphone output.
Reception
Board
Module
Built-in
Power
Board
Module
Keyboard
Module
LCD screen
module
The remote reception board module is constituted by an indicator-light and a remote
reception-head. 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
udged (red is standby, green is power on).
Convert the 100V～240V AC into DC, output have +24v, +12V, +5V, and the +5V_stb in
standby state.
Keyboard module has 7 function keys (program increase/decrease, volume
increase/decrease, AV/TV switch, menu key, on/standby control), customer could use the
key of the machine to manipulate the LCD TV.
LCD screen has built-in inverter that convert DC into high voltage AC signal to ignite the
backlight CCFL (Cold Cathode Fluorescent Light); the LCD screen process the video signal
from signal board and reappear.
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FFuunnccttiioonn ooff mmaaiinn IICCss
1. Main ICs and functional modules
No. Item no. Model Main function
1 U15 JS-6H2/121 High frequency head, output sound and image video signal
2 U1 SVP-CX32LF Video decode, image processor, A/D and D/A conversion
3 U2 IS42S32200C1-6TL
4 U3 AT24C64A-10PU-2.7 EEPROM
5 U4 T5BS4-9999 MCU，main control IC
6 U5 SST39VF040-70-4C-NHE Flash, whole machine control program is in it
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 VGA line and field synchronizing signal waveform shaping
12 U16、U25 AT24C02BN-10SU-1.8 EEPROM
14 U18、U22 AZ1117H -1.8TRE1 3.3V to 1.8V DC level conversion
16 U19、U24 AZ1117H -3.3TRE1 5V to 3.3V DC level conversion
18 U20 AZ1084S -3.3TRE1 5V to 3.3V DC level conversion
SDRAM with 2MX32bits, used for the access of image
signal.
19 U21 AZ1084S -1.8TRE1 5V to 1.8V DC level conversion
20 U23 AZ78L08ZTR-E1 12V to 8V DC level conversion
21 U26 CS4344-CZZ HDMI digital audio decode, D/A conversion
22 U28、U29 Rclamp0514M.TBT ESD protection device of HDMI input terminal
24 U30 ANX9011L HDMI digital signal decode
25 U31 PI5C3306LE Bus (SDA, SCL) switch used for program update
26 U33 TDA8944J Sound power amplifier (BTL output)
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2. Function introduction of ICs or functional module
1.Hign frequency head(JS-6H2/121)
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 AGC control (intermediate audio output)
12 Video/Out CVBS signal output
13 VCC（+5V） +5V power
14 Audio/Out Audio signal output
2. Image processing IC SVP-CX32LF
SVP-CX32 is a high integrated video decoding, image processing chip and is widely used in such
mainstream flat screen TVs as HDTV, PC, LCD TV, and Plasma TV etc. it inherited the technological advantage
of its earlier stage scaler chip. It adopts the 6th generation Trident multi-zooming mode and non-interlaced
scanning technology when processing image. Multi-color mode (PAL/SECAM/NTSC) decoding is built-in; 10bit
A/D module, 8bit LVDS transmission interface, digital comb filter module, and 3D digital comb video decoding
are available. Such functions as video enhancement, OSD and VBI/Closed Caption, and teletext（LEVEL 2.5）
are available. The function of the chip makes it adapt to global market. The decoder could operate under
PAL/SECAM/NTSC mode; there are such input interfaces as 5 channels CVBS, 2 channels chroma signal, 1
channel PC RGB, 2 channels YpbPr, and 8-bit Digital ITU-R656/601（HDMI interface）。
Its main features are:
● 6th generation image dynamic smooth filtering
● 10-bits A/D conversion
● PC automatic phase and mode recognition, white balance correction
● 8bits LVDS transmission interface
th
generation 4 zooming watch mode
● 6
● Advanced chroma processing and dynamic contrast function
● Chroma extension of green and blue color, skin strengthen
th
generation 3D digital comb video filter
● 6
● Support 60Hz～100Hz interlace scanning and 50Hz～75Hz non-interlace scanning
● PC and video frame format conversion
● 14D dynamic video enhancement
● Pulse width modulation
● Build-in A/D conversion function
● Teletext function / Multi-image browse mode
● Provide 16/32bits SDR memory interface
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Pin function description:
Pin No. Designation of Pin Function of Pin
Analog signal input/output terminal
169 CVBS1 CVBS1 input
180 Y_G1 Y input terminal
181 Y_G2 SCART1 green base color input terminal
182 Y_G3 S terminal brightness signal input terminal
183 PC_G PC green base color input
188 PR_R1 DVD interface Pr signal input
189 PR_R2 SCART1 red base color input terminal
190 PR_R3 SCART2 brightness signal input terminal
191 PC_R PC red base color input
192 C S terminal brightness signal input terminal
196 PB_B1 DVD interface Pb signal input
197 PB_B2 SCART1 blue base color input terminal
198 PB_B3 SCART1 CVBS signal input terminal
199 PC_B PC blue signal input
171 FS1 No connection
170 FS2 No connection
173 FB1 SCART1 RGB_ST signal input terminal
172 FB2 SCART2 chroma signal input terminal
174 VREFP_1 A/D conversion1differential positive voltage
175 VREFN_1 A/D conversion 1 differential negative voltage
184 VREFP_2 A/D conversion 2 differential positive voltage
185 VREFN_1 A/D conversion 2 differential negative voltage
Digital signal terminal
37 DP0
┆ ┆
29 DP8
26 DP9
25 DP10
24 DP11
22 DP12
21 DP13
18 DP14
┆ ┆
14 DP18
11 DP19
┆ ┆
7 DP23
CPU control terminal
Digital signal I/O（DP0~DP23）interface
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55 PWMO Pulse width modulation input
57 SCL
58 SDA
60 GPIO0 GPIO1 selection signal
59 GPIO1 GPIO2 selection signal
62 WR# CPU write signal
63 RD# CPU read signal
61 CS
56 INTN
84 ALE Address latch signal
86 RESET Reset signal (high level effective)
85 V5SF
4 DP_HS Line synchronization signal
5 DP_VS Field synchronization signal
23 DP_CLK Clock signal
6 DP_DE_FLD DE I/O terminal
64 ADDR0
┆ ┆
71 ADDR7
83 A_D0
┆ ┆
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
204 XTALO
SDRM
124 MA0
┆ ┆
121 MA3
118 MA4
┆ ┆
113 MA9
125 MA10
126 MA11
156 DQM0
133 DQM1
109 DQM2
IIC bus（clock）
IIC bus（data）
CPU chip selection signal（low level effective）
Interrupt signal（low level effective）
SF Power（+5V）
CPU address（R0~R7）signal
CPU address/data passage
Crystal oscillator interface
Memory address （A0~A11）
Memory read/write byte signal
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87 DQM3
128 BA0
127 BA1
130 RAS# RAS signal
131 CAS# CAS signal
132 WE# Memory write drive
112 CLKE Memory clock signal drive
129 CS0# Memory chip selection signal
111 MCK Memory clock signal
155 MD0
┆ ┆
148 MD7
145 MD8
┆ ┆
138 MD15
107 MD16
┆ ┆
100 MD23
95 MD24
┆ ┆
88 MD31
LVDS port
52 LVDS_VDDP LVDS channel power
38 PLL_GND PLL ground
39 PLL_VCC PLL power
47 LVDSGND LVDS ground
46 LVDSVCC LVDS channel power
43 TCLK1M
41 TCLK1P
51 TA1 M
50 TA1P
49 TB1M
48 TB1P
45 TC1M
44 TC1P
41 TD1M
40 TD1P
Clock and power
146 VDDM
134 VDDM
108 VDDM
98 VDDM
Memory stack address selection
Memory data interface
High, low differential clock port
High, low differential data port
Memory port digital power
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