Akira LCT-37EL0SST Schematic
LCD TV
Service Manual
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MODEL:
LCT-37EL0SST
Model No.: LCT-37ELOSST.doc
Version: 1.0
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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
Model No.: LCT-37ELOSST.doc
Version: 1.0
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IMPORTANT SAFETY PRECAUTION
Model No.: LCT-37ELOSST.doc
Version: 1.0
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Model No.: LCT-37ELOSST.doc
Version: 1.0
6
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
Panel
In/Out
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.)
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
Video
Component input
PC (Analog RGB) input
HDMI
Component/S-Video input
SCART input
Audio input(RCA) × 2
Audio
Audio output (RCA)
RF Signal
Others
PC Audio input
COAXIAL/OPTICAL output
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
Text TELETEXT
Power Consumption 192 Watts
Power Save Mode Less than 6 Watts
Speaker
Model No.: LCT-37ELOSST.doc
Version: 1.0
10 Watts *2
Size
Weight 2.2Kg/4.84 pounds(gross)
19(W) * 11.5(D) * 59(H) cm
7.48(W) * 4.52(D) * 23.22(H) inch
7
Plug & Play DDC 1/2 B
Screen Control True Colour On Screen Display Menu, Bit Map
Remote Controller Yes
Body
Size 111.5(W) * 8 33.5(D) * 69(H) cm
Weight 28.5Kg/62.7 pounds(gross)
Stand
Size 72(W) * 32.5(D) * 28.5(H) cm
Weight 5.9Kg/12.98pounds(gross)
Dimension
Specification are subject to changes without prior notice.
Model No.: LCT-37ELOSST.doc
Version: 1.0
108.6(W) * 30.4(D) *64(H)cm : Speaker(stand include)
42.74(W) * 11.96(D) * 25.19(H) inch
43.89(W) * 13.18(D) * 27.16(H) inch
28.34(W) * 12.79(D) * 11.22(H) inch
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CHASSIS OVERVIEW
ITEMS SPECIFICTION
Target Panel Size LCD 37/42 inch
Aspect Ratio 16:9
Resolution WXGA (1280X768, 1366X768)
Display
Refresh Rate 50Hz, 60Hz
Maximum Pixel Rate
Interface Single or Dual Channel LVDS
Supports dual link up to 135MHz dot clock for
SXGA
H Frequency Range : 20 ~ 82 kHz
V Frequency Range : 55 ~ 90 kHz
Supported Signals
Analog PC
Digital PC (DE Mode)
CVBS, S-Video
Component 1080i, 720p, 480i/576i, 480p/576p
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
Maximum resolution : 1600 x 1200 60Hz
Maximum pixel rate : 165 MHz
DTV mode support : 720p/1080i
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
DTV mode support : 720p/1080i
NTSC-M, PAL-BGHI, NTSC-4.43, SECAM,
PAL-60
Connection (Video)
Connection (Audio)
Model No.: LCT-37ELOSST.doc
Version: 1.0
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%)
HDMI HDMI Type (Support HDMI ver 1.0)
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
TV
OSD
User Functions
Tuning Range 48.25MHz ~ 863.25MHz
No of Programs 100 Channels
Sound System BG, DK, I, L, L
MTS Support Mono/Stereo/Nicam/Bi-Lingual
Color
OSD Type Graphic & text
Language Support
Image Adjustment
8 Bit color (256 color palette from 565 16
bit color)
Unicode string format
(later) All language support
(later) Supports Arabic reversed string
order
Contrast / Brightness / Sharpness / Color
/ Tint
Color Temperature
Picture Standard Select
Image aspect ratio
TV Function
Model No.: LCT-37ELOSST.doc
Version: 1.0
Country Option Select
Auto Frequency Scan
Manual Channel Edit -Color System
-Sound System -Channel Edit -Manual
Frequency Search
Channel Add/Erase
Channel Name Edit
10
Channel Sort
Manual Fine Tune
Volume
Balance
Sound Function
PC Function
PIP Function
TTX 252 Pages
5 Band Equalizer
Mono / Stereo / Nicam Dual / Nicam
Sound
Sound Standard Select
Auto Adjustment
Frequency Adjustment
Phase Adjustment
H/V Position Adjustment
Up to 32 analog pc mode memorize
PIP On/Off
PIP Source Select
PIP Size
PIP Position
PIP Swap
PIP Sound Select
Sleep Time Select
Timer
Miscellaneous
Back Light Power Panel Dependent
Standby Power DC 5V / 1.5A
Power
Board/Panel Power DC 12V or 5V (depend on Panel)
Power Save Mode Under 5W
Model No.: LCT-37ELOSST.doc
Version: 1.0
Current / On / Off Time Adjustment
On Time Channel / Volume
User Default Reset
OSD Language Select
Blue Screen
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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
AK4386 DAC
DTT Option
HDMI Option
Model No.: LCT-37ELOSST.doc
Version: 1.0
12
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
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
Auto Color Gain adjustment:
PC and DTV mode
Blue Gain 128 0 ~255
4. Device Adjustment MST5151A
MST5151A Memory
MST5151A Option
ADC
VCT
5. Heat Run MST5151A Pattern
VCT49xyl Pattern
Full White
Model No.: LCT-37ELOSST.doc
Version: 1.0
Stop – Power off (Tact
switch)
13
6. Version Version Saturn VCT-PAL
Release Firmware Version
Panel used time Show panel used time
TTX252PAGE
7. Reset Reset Initialize to factory mode
Model No.: LCT-37ELOSST.doc
Version: 1.0
14
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.
Model No.: LCT-37ELOSST.doc
Version: 1.0
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Model No.: LCT-37ELOSST.doc
Version: 1.0
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Model No.: LCT-37ELOSST.doc
Version: 1.0
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BLOCK DIAGRAM
Main Board
Model No.: LCT-37ELOSST.doc
Version: 1.0
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