akira LCT-20CH01ST User manual

LCD TV
Service Manual

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Model No.: LCT-20CH01ST.doc
Version: 1.0
MODEL:
LCT-20CH01ST

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CONTENTS
SAFETY PRECAUTION ............................................................................................................ 4
SPECIFICATION........................................................................................................................ 6
APPEARANCE OF REMOTE CONTROL ................................................................................. 7
OPERATION .............................................................................................................................11
CHARACTERISTIC OF CHASSIS .......................................................................................... 23
FUNCTION OF ICs .................................................................................................................. 27
SIGNAL PROCESSING ANALYSIS......................................................................................... 52
TROUBLE SHOOTING............................................................................................................ 63
LIST OF CRITICAL PARTS ..................................................................................................... 64
FACTORY MODE SETTING & NOTES................................................................................... 65
APPENDIX.................................................................................................................... 69
1) SCHEMATIC DIAGRAM OF CHASSIS
2)SCHEMATICDIAGRAMOFPOWERMODULE
3) ASSEMBLY DIAGRAM
4)WIRINGDIAGRAM
5) EXPLODED VIEW AND PART LIST

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S
SA AF FE ET TY Y P PR RE EC CA AU UT TI IO ON NS S

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S
SP PE EC CI IF FI IC CA AT TI IO ON N

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A
AP PP PE EA AR RA AN NC CE E & & F FU UN NC CT TI IO ON N C CO ON NT TR RO OL L
No. NAME DESCRIPTION
○
1<MENU> Open the menu switch among the menus
○
2<TV / AV> To switch among the signal source of TV, SCART1, SCART2, AV,
S-VIDEO, COMPONENT, VGA and HDMI
○
3<VOL+> To increase the sound volume , Adjust functions in menu operation.
○
4<VOL-> To decrease the sound volume, Adjust functions in menu operation.
1. In TV mode, increase channel number
○
5<CH+> 2. To select functions in menu operation
1. In TV mode, decrease channel number
○
6<CH-> 2. To select functions in menu operation
○
7Enter or leave the standby mode, same as on the remote control.
(1) Headphone Output Port for headphone audio output
(2) Infrared Receiver
Window To receive the signal from remote control
(3) Power Indicator
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.
Notice: In this manual, the icon with “< >” means the button on the remote control, the icon with “[ ]” mean
the button on the LCD TV.

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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
Including audio / video input of AV, S-Video, SCART1, SCART2, Component,
VGA and HDMI.
Terminal Description:
No. Name Description
○
1VGA Connect the VGA signal of computer with this port VGA cable, connect audio signal
with VGA’s audio input port by audio cable.
○
2S-VIDEO Brightness and chroma signal input, Notice: S-Video and AV can not be used at
same time for they share of one signal channel.
○
3COMPONENT Connect the TV COMPONENT signal port with video COMPONENT signal from
DVD or other equipments.
○
4AV AV audio / video signal input terminal
○
5HDMI Port for digital audio & video signal input
○
6SCART1 Video and RGB signal input, Video signal (RF VIDEO signal) output
○
7SCART2 Video and Y/C signal input, Video signal (RF VIDEO signal) output
○
8Headphone
Output Port for headphone audio output
○
9TV Signal input TV signal input port

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REMOTE CONTROL
The buttons of the original remote control are as following:

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O
OP PE ER RA AT TI IO ON N

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