akira LCT-37EL0SST User manual

LCD TV
Service Manual

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Model No.: LCT-37ELOSST.doc
Version: 1.0
MODEL:
LCT-37EL0SST

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Model No.: LCT-37ELOSST.doc
Version: 1.0
CONTENTS
SAFETY PRECAUTION......................................................................................................................4
SPECIFICATION.....................................................................................................................................6
CHASSIS OVERVIEW............................................................................................................................8
KEY COMPONENT.............................................................................................................................. 11
SERVICE MODE ADJUSTMENT..................................................................................................12
FIRMWARE UPDATE........................................................................................................................14
BLOCK DIAGRAM ..............................................................................................................................17
CIRCUIT DIAGRAM............................................................................................................................21
OSD MANUAL STRUCTURE. ............................................................................................................30
BILL OF MATERIAL............................................................................................................................40
EXPLODED VIEW................................................................................................................................51
PART LIST.............................................................................................................................................52
WALL MOUNT INSTALLATION GUIDE...........................................................................................53

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Model No.: LCT-37ELOSST.doc
Version: 1.0
IMPORTANT SAFETY PRECAUTION

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Model No.: LCT-37ELOSST.doc
Version: 1.0

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Model No.: LCT-37ELOSST.doc
Version: 1.0
SPECIFICATION
Panel Type 37” Wide TFT Color LCD
Display Area 819.6mm × 460.8mm(37.02 inch(940.3mm)diagonal
Display Color (8bit) 16.7 million
Pixel Pitch 0.2 mm × 0.6 mm × RGB
Recommended Resolution 1366 × 768
Contrast Ratio 500:1 (typical)
Luminance white 500cd/㎡(Center 1 Point Typ.)
Panel
Viewing Angle Free View Angle(R/L 176, U/D 176)
PC Analog RGB 15 pin D-Sub Input
S-video input
SCART input
Video input(RCA) × 2
Component input
PC (Analog RGB) input
Video
HDMI
Component/S-Video input
SCART input
Audio input(RCA) × 2
Audio output (RCA)
PC Audio input
Audio
COAXIAL/OPTICAL output
In/Out
Euro A/V SCART (Half)
Antenna 75Ω Coaxial cable (Analog)
Color System PAL / SECAM
Sound System B/G , D/K , I , L
Stereo Type NICAM , A2
RF Signal
Text TELETEXT
Power Consumption 192 Watts
Others
Power Save Mode Less than 6 Watts
10 Watts *2
19(W) * 11.5(D) * 59(H) cm
Size
7.48(W) * 4.52(D) * 23.22(H) inch
Speaker
Weight 2.2Kg/4.84 pounds(gross)

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Model No.: LCT-37ELOSST.doc
Version: 1.0
Plug & Play DDC 1/2 B
Screen Control True Colour On Screen Display Menu, Bit Map
Remote Controller Yes
Size 111.5(W) * 8 33.5(D) * 69(H) cm
43.89(W) * 13.18(D) * 27.16(H) inch
Body
Weight 28.5Kg/62.7 pounds(gross)
Size 72(W) * 32.5(D) * 28.5(H) cm
28.34(W) * 12.79(D) * 11.22(H) inch
Stand
Weight 5.9Kg/12.98pounds(gross)
108.6(W) * 30.4(D) *64(H)cm : Speaker(stand include)
Dimension
42.74(W) * 11.96(D) * 25.19(H) inch
Specification are subject to changes without prior notice.

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Model No.: LCT-37ELOSST.doc
Version: 1.0
CHASSIS OVERVIEW
ITEMS SPECIFICTION
Target Panel Size LCD 37/42 inch
Aspect Ratio 16:9
Resolution WXGA (1280X768, 1366X768)
Refresh Rate 50Hz, 60Hz
Maximum Pixel Rate Supports dual link up to 135MHz dot clock for
SXGA
Display
Interface Single or Dual Channel LVDS
H Frequency Range : 20 ~ 82 kHz
V Frequency Range : 55 ~ 90 kHz
Maximum resolution : 1600 x 1200 60Hz
Maximum pixel rate : 165 MHz
DTV mode support : 720p/1080i
Analog PC
Separate / SOG sync support
H Frequency Range : 20 ~ 82 kHz
V Frequency Range : 55 ~ 75 kHz
Maximum resolution : 1600 x 1200 60Hz
Maximum pixel rate : 165 MHz
Digital PC (DE Mode)
DTV mode support : 720p/1080i
CVBS, S-Video NTSC-M, PAL-BGHI, NTSC-4.43, SECAM,
PAL-60
Component 1080i, 720p, 480i/576i, 480p/576p
Supported Signals
TV All PAL/SECAM System
TV Ant in (75 ohms coaxial cable)
SCART SCART in (75 ohms 0.7/1.0 Vp-p) CVBS
AV1 AV1 in (75 ohms 0.7/1.0 Vp-p) CVBS
AV2 AV2 in (75 ohms 0.7/1.0 Vp-p) CVBS
S-Video S-Video in
Component Y-Pb-Pr DTV RCA in (75 ohms 0.7Vp-p)
PC Analog D-sub in (Analog : 75 ohms±10%, 0.7Vp-p±5%)
Connection (Video)
HDMI HDMI Type (Support HDMI ver 1.0)
Connection (Audio) TV Tuner SIF in

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SCART SCART Stereo Sound in (500mVrms)
AV1 AV1 Stereo Sound in (500mVrms)
AV2 AV2 Stereo Sound in (500mVrms)
PC Stereo Audio Line in (500mVrms)
S-Video RCA Stereo Audio Line in (500mVrms) – Shared
Component 1 RCA Stereo Audio Line in (500mVrms) – Shared
Speaker Out 7W x 2 Stereo Speaker (8 ohms)
Audio Out RCA Stereo Audio Line Out (500mVrms)
Digital Audio Out HDMI SPDIF Audio (Optical)
Tuning System PAL/SECAM System
Tuning Range 48.25MHz ~ 863.25MHz
No of Programs 100 Channels
Sound System BG, DK, I, L, L
TV
MTS Support Mono/Stereo/Nicam/Bi-Lingual
Color 8 Bit color (256 color palette from 565 16
bit color)
OSD Type Graphic & text
Unicode string format
(later) All language support
OSD
Language Support
(later) Supports Arabic reversed string
order
Contrast / Brightness / Sharpness / Color
/ Tint
Color Temperature
Picture Standard Select
Image Adjustment
Image aspect ratio
Country Option Select
Auto Frequency Scan
Manual Channel Edit -Color System
-Sound System -Channel Edit -Manual
Frequency Search
Channel Add/Erase
User Functions
TV Function
Channel Name Edit

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Model No.: LCT-37ELOSST.doc
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Channel Sort
Manual Fine Tune
Volume
Balance
5 Band Equalizer
Mono / Stereo / Nicam Dual / Nicam
Sound
Sound Function
Sound Standard Select
Auto Adjustment
Frequency Adjustment
Phase Adjustment
H/V Position Adjustment
PC Function
Up to 32 analog pc mode memorize
PIP On/Off
PIP Source Select
PIP Size
PIP Function
PIP Position
PIP Swap
PIP Sound Select
TTX 252 Pages
Sleep Time Select
Current / On / Off Time Adjustment
Timer
On Time Channel / Volume
User Default Reset
OSD Language Select
Miscellaneous
Blue Screen
Back Light Power Panel Dependent
Standby Power DC 5V / 1.5A
Board/Panel Power DC 12V or 5V (depend on Panel)
Power
Power Save Mode Under 5W

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Model No.: LCT-37ELOSST.doc
Version: 1.0
KEY COMPONENT
Chip Model Key Components Maker Comments
MST5151A SCALER, ADC, DVI(HDCP), LVDS MStar
VCT49XYI AV, IF, TTX Micronas
TA2024 Audio AMP Tripath
HY5DU281622ET DDR Hynix
MX29LV8000BTTC-70 Flash Mx
IC62LV2568LL SRAM CSI
TEA6422 Audio Mux ST
WT61P4 Expand I/O Weltrend
TS5V330DBQR Component Mux Pericom DTT Option
74CBTLV3257 UART Input Mux DTT Option
AK4386 DAC HDMI Option

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Model No.: LCT-37ELOSST.doc
Version: 1.0
SERVICE MODE
Press Still -> Sleep -> Mute -> Enter in the order from the remote controller to enter
the service (factory) mode.
SERVICE MENU Sub menu Initial Remarks
1. Calibration PC calibration Auto Color Gain adjustment:
PC and DTV mode
2. Option Table Last Power On On <-> Off
Melody Volume 10 0 ~ 20
Logo Off On <-> Off
3. Color Control Sub-Brightness 128 0 ~255
Red Offset 128 0 ~255
Green Offset 128 0 ~255
Blue Offset 128 0 ~255
Sub-Contrast 128 0 ~255
Red Gain 128 0 ~255
Green Gain 128 0 ~255
Blue Gain 128 0 ~255
4. Device Adjustment MST5151A
MST5151A Memory
MST5151A Option
ADC
VCT
5. Heat Run MST5151A Pattern Stop – Power off (Tact
switch)
VCT49xyl Pattern
Full White

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Model No.: LCT-37ELOSST.doc
Version: 1.0
6. Version Version Saturn VCT-PAL
Release Firmware Version
Panel used time Show panel used time
TTX252PAGE
7. Reset Reset Initialize to factory mode

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Model No.: LCT-37ELOSST.doc
Version: 1.0
FIRMWARE UPDATE
(1) With the TV power turned off with the master switch, connect the
RS232C to the firmware update cable and open the executable file of the
program (WareCubeDownload.exe).
(2) Click on “File Open” to select Update File. Click on “Go” and it will be in
standby condition for firmware update.
(3) Turn the power of the TV on with the master switch to start the firmware
update.
(4) When the firmware update is complete, you will see a message saying
“Download is Completed.”. When completed, turn the power of the TV Off/On
with the master switch.

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BLOCK DIAGRAM
Main Board

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POWER BOARD

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PCB LAYOUT
1. JB : LVDS Signal
2. CN18 : To Power Board
3. CN14 : Main Power
4. CN15 : Sub Power
5. CN24 : N.C
6. CN17 : Key Pad
7. CN9 : Speaker
8. CN2 : To PC
9. CN1 : To Module

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Model No.: LCT-37ELOSST.doc
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INPUT LAYOUT
1 HDMI
Connects the HDMI cable to the HDMI connector on the computer.
(or DVD player, Set-top Box etc)
2 ANALOG RGB
Connects the VGA signal cable to the VGA connector on the computer.
3 AUDIO OUT
Jack for connecting on Audio AMP.
4 PC AUDIO IN
Connect to the audio-output port of a PC.
5 S-VIDEO IN
Input the S-VIDEO signal from an S-VHS VCR or Laserdisc player.
6 AV2 : COMPOSITE VIDEO IN/AUDIO IN(Left/Right)
COMPOSITE VIDEO IN : Connects with the VIDEO input terminal from a VCR.(or DVD Player)
AUDIO L/R IN : Connects with the Audio Left/Right from a VCR. (or DVD Player)
7 COMPONENT VIDEO IN
Jack for connecting the DVD player (or VCR player or Digital TV playback player)
video input connector (for both DVD and DTV).
8 OPTICAL OUT
Digital Audio out
9 COMPONENT AUDIO IN
Connects with the Audio-Left/Right from an S-VHS VCR. (or DVD Player)
10 SCART (Half)
Connects PAL-method TV Audio/Video.
11 AV1 : COMPOSITE VIDEO IN/AUDIO IN (Left/Right)
12 COMPOSITE VIDEO IN : Connects with the Video input terminal from a VCR.(or DVD
Player)
AUDIO L/R IN : Connects with the Audio Left/Right from a VCR. (or DVD Player)
13 ANT (VHF/UHF) Connector
Connect with an external cable from the external antenna.