Akai LTA-20A301 Manual de usuario

20”LCD TV SERVICE MANUAL

VERSION:

DESIGNEDBY:

CHECKEDBY:

APPROVED BY:

ShenZhen KXD Multi-Media CO.,LTD

CONTENTS

SPECIFICATION----------------------------------------------------------3-5

REMOTE CONTROLLER-----------------------------------------------6

EXPLODED VIEW DIAGRAM-----------------------------------------7-10

BOLCK DIAGRAM--------------------------------------------------------11

MAIN BOARD CIRCUIT-------------------------------------------------12-21

TUNER CIRCUIT----------------------------------------------------------22

INVERTER CIRCUIT-----------------------------------------------------23

ADAPTER CIRCUIT------------------------------------------------------24

COMPONENT DIAGRAM----------------------------------------------25-32

BILL OF MATERIAL-----------------------------------------------------33-60

KXD 20”LCD TV SPECIFICATION

FEATURES

●POWER SUPPLY:DC 12V/5A(ADAPTER)

ADAPTER POWER SUPPLY:AC 100∽240V 50/60Hz

●MULTI TV SYSTEM:PAL BG/DK/I and SECAM BG/DK/LL’

●MULTI VEDEO SYSTEM:PAL/NTSC/SECAM

●VERSATILE INPUT SOURCES:TV,VIDEO,S-VIDEO,SCART/YCbCr,

PC(ANALOG)

●FULL FUNCTION REMOTE CONTROLLER

●EXCELLENT SOUND EFFECT WITH VOLUME,TRABLE,BASS,

BALANCE, ADJUSTABLE

●SMART SOUND & PICTURE MODE SET:

STANDARD,SPEECH,MUSIC;STANDARD,SOFT,RICH

●ADAPTIVE 2/4 LINE COMB FILTER FOR PAL/NTSC

●VTR FOR WEAK AND DISTORETED SIGNAL FROM VIDEO TAPE

RECORDER

●10 PAGES TELETEXT(OPTION)

●AUTOMATICALLY TURN OFF THE SET WHEN SIGNAL ABSENT LONGER

THAN 10 MINUTES

●256 CHANNELS

●BLUE SCREEN DISPLAY

GENERAL SPECIFICATION:

PART1:TV SET

67Watt（MAX.）

POWER CONSUMPTION ≤3Watt(STBY)

TV RECEIVE SYSTEM PAL D/K I B/G SECAM BG/DK/LL’

VIDEO SYSTEM MULTI PAL/ SECAM/ NTSC

VISION INTERMEDIATE FREQUENCY 38.9MHz,33.95MHz(L’)

5.5 MHz (B/G)

6.0 MHz (I)

INTER-CARRIER FREQUENCY

6.5 MHz (D/K,LL’)

BG/DK/L: 34.47MHz

CHROMA IF FREQUENCY L’: 38.38 MHz

VHF-L 46.25-163.25MHz

VHF-H 158.25-466.25MHz

CHANNELS RECEIVED

UHF 471.25-855.25MHz

TUNING MODE PLL SYSTEM

1 AV IN,1 S-VIDEO IN

AV IN/OUT 21PIN SCART IN

Y/C IN -Y：1.0±0.2VP-P 75Ω

C:0.7 VP-P 75Ω

VIDEO IN----1.0 ±0.2VP-P 75Ω

AUDIO IN----Approx,500mV

VIDEO OUT----1.0±0.2 VP-P 75Ω

AUDIO OUT----Approx,400mV

AV IN/OUT SPECIFICATION

RGB IN ---------0.7 VP-P

0.7 VP-P (analog RGB signal)

PC INPUT 2.4-5V(HSYNC&VSYNC)

ANTENNA INPUT IMPEDANCE 75 OHM

ENGLISH/SPAINISH/ITALIAN

OSD LANGUAGE RUSSIAN/GERMAN/FRENCH

AUDIO OUTPUT POWER > 3W (1KHz, 0.5Vrms, 10%THD)

GREEN POWER ON

RED POWER OFF

LED INDICATORS

ORANGE SLEEP(PC)

HAND SET POWER SUPLY BATTERY 1.5V （AAA）x2

PART2:PANEL

Brand & Model AU / A201SN01

Resolution 800*600

Displayable Colour 16.7MHz

Surface Hard Coating + Anti-Radiation

Viewing Angle (H/V) 160° (Hor) / 120° (Ver)

Display Response Time 16ms

Contrast Ratio 1:500

Brightness 450nit

Aspect 4:3

Lamp Life 50,000Hrs

Bad Pixel Quality (Bright/Dark/Total) 2 / 3 /5

PART3:PC INPUT RESOLUTION

Recommended resolution is 800*600@60Hz

RESOLUTION V.Freq(Hz) H.Freq(KHz) Band

Width(MHz) Polarity

H/V

1 720*400 70 31.47 28.322 -/+

2 640*350 70 31.469 25.175 +/-

3 640*480 60 31.47 25.175 -/-

4 640*480 72 37.86 31.5 -/-

5 640*480 75 37.50 31.5 -/-

6 800*600 56 35.156 36 +/+

7 800*600 60 37.88 40 +/+

8 800*600 75 46.88 49.5 +/+

9 800*600 72 48.08 50 +/+

REMOTE CONTROL DESCRIPTION

DESCRIPTION OF

RM-612

13 9

111

1.POWER:turn on or off the TV

2.NUMBER KEYS

3.VOL+/- :adjust volume

4.CH+/- :change program forward/backward

5.MENU: access main menu

6.BOTONES / : move cursor in main menu

7.BOTONES / : adjust item you selected

8.REVEAL: recall program number, system etc on

the screen

9.Q VIEW: return to the last viewed program

10.SOURCE: select external video source

11. MUTE: mute sound

12.SLEEP: set time to turn off the TV

13.TEXT:display/mix/close teletext signal

14.HOLD: hold/release sub-page

15.SUB PAGE: view sub-page

16.INDEX: view index page directly.

17.4COLOR BOTTONS:

access the corresponding page indicated in the

line of teletext page

18.VTR:rectify distoration signal from

VTR(videotape recorder).

19:AUTO: auto adust the position and size of the

picture in PC mode

DIRECT PROGRAM SELECTION (0-9 BUTTONS)

1.To select one-digit channel:

Press 0-9 digit buttons and wait for 2 seconds. For example,you need

channel 5, please input"5"button and the screen displays "5", the TV set

goes to channel 5 in 3 seconds.

2.To select two-digit channel:

Press two digit buttons in order to input the channel number.For example,

you need channel 10, please input "1" button, followed "0" button and the

set goes to channel 10. Be sure that the second press should be within 2

seconds.

3.To select three-digit channel:

Press three digit buttons in order to input the channel number. For

example, you need channel 110, please input "1" Button firstly, followed

"1" button secondly and followed 0 button thirdly then the set goes to

channel 110. Be sure that the second press should be within 2 seconds.

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