Supra 8T83 User manual

SERVICE MANUAL
8T83 CHASSIS
ENGINEER BY: CHECKED BY: PPROVED BY: _____
_____
_____
Design and specifications are subject to change without prior notice.
( ONLY REFERRENCE)
15.1INCH LCD TV
MANUAL

Contents
Note
Technical specification--------------------------------------------
Operation Instructions
-----------------------------------------------------------------
Chassis Block Diagram--------------------------------------------
IC Block Diagram ---------------------------------------------------
Transistor mark ----------------------------------------------------
PCB Top/Bottom layer ---------------------------------------------
Service Adjustments-----------------------------------------------
Control Location ----------------------------------------------------
Input and Output Terminals---------------------------------------
---------------------------------------------
Cabinet parts List --------------------------------------------------
Circuit Diagram-----------------------------------------------------
-2-
2
3-4
5
6-8
9
10-14
15-16
17
18
19-26
27
28

TECHNICAL SPECIFICATION
-3-
Frequency
L L
CUSTOM , SOFT , STANDARD ,RICH
LATIN GREEK

TECHNICAL SPECIFICATION
-4-

Chassis Block Diagram
-5-

-6-
IC Block Diagram
IC 900 ( SWITCHING REGULATOR FOR ELECTRONIC TUNING) BA6161A
IC 905(3ASTEP-DOWN VOLTAGE REGULATOR) LM2596S

IC2 (MULTI STANDARD VIDEO-IF)TDA4470
IC602(POWER ) STR-G6653
IC Block Diagram
-7-

IC 300 (Multi standard Sound Processor Familyt) MSP3415G
Ic700 (Filter Video Processor ) VPC3230D-C5
IC Block Diagram
-8-

-9-
Transistor Mark
BE
C
S3904
BE
C
S3906
AMS1117
LM78L08
OUTPUT INPUT
GND
GND RESET
VCC
IMP809
LM1086
INPUT
GND OUTPUT
MC78M05CDT
INPUT
GND
OUTPUT
INPUT
GND OUTPUT

AV IN/OUT PC IN PCB Top Layer
-12-

-13-
AV IN/OUT PC IN PCB BOTTOM Layer

-14-
VGA&CONTROL PCB Top Layer
VGA PCB TOP LAYER
CONTROL PCB TOP LAYER

Service Adjustments
-15-

Service Adjustments
-16-

Control Location
-17-
FUNCTIONAL PARTS
Front View of TV Set
To turn the TV power OFF
Press the Standby Button to make the TV set in Standby Mode., then disconnect
the power plug from the wall outlet.
To turn the TVpower ON
Put the TVset on thecorrect place, thenconnect the DCplug of theAC-DC adaptor
to the DC12V socket at the back or the TV set.Connect the adaptormain cord to
the wall outlet,then the power indicator will turnred, the TVset at Standby Mode.
After you pressthe Standby Button the power indicatorwill change togreen. It need
a few secondbefore the picture appear.
If you are not going to use this TV set for a long time, switch off the set using
the power switch on the TV set and disconnect the power plug from the wall outlet.
NOTE
If the TV set does not receive any signal for 5 minutes, it will enter standby mode.
1. Remote Sensor
2. AV Button
3. OK Button
4. Main Menu Button
5. PROG.+Button
6. PROG.- Button
7. VOL.+Button
8. VOL.- Button
9. Power Indicator/Stand by Button
10. Speakers
1010 1010
11
22
33
44
55
66
77
88
99

-18-
Operation Instructions
Rear View of TV Set
NOTE
S.VIDEO and AVIN 1 (VIDEO)inputs cannot be used at the same time.
Precautions when connectingto other equipment
When using externalequipment with thisTV set, pleaseread the instruction
manual of the external equipment.
Switch off all power supplies tothe equipment and TV set beforeconnection.
Always ensure thatthe input andoutput terminals arecorrectly connected.
1. DC 12V In
2. VGA In
AV Audio Right In
4. AV Audio Left In
5. AV Video In
6. S-VIDEO IN
7. Antenna Input Socket(75Ohm)
8. SCART
9. PHONE
3.
DC12VDC12V PC INPUTPC INPUT
55
ANT INANT IN VIDEOVIDEOS-VIDEOS-VIDEO PHONEPHONE
SCARTSCART
LLRR
33447788
66
1122
Adaptor
99

Operation Instructions
-19-
23
56
9
8
7
0
MENUMENU VOL.+VOL.-
I/II
P.M .
AV OK
SYS
Q.
VIEW
CH
CH
XX
MIX INDEX LANGUAGE
REVEAL SIZE SUB. PAGE
4
1
HOLD
- /- -
Remote Control Unit
11
44
33
22
2
POWER ON /STANDBY button
Press this buttonto switch onthe TV when
at standby mode.
SLEEP button
Press this buttonto set thesleep timer.
When the presetlength of timehas passed,
the TV setenters standby mode.
SOUND SYSTEM button
Press this buttonto select thecorrect
sound system.
STEREO/BILINGUAL SOUNDbutton (option)
When stereo programis received, press
this button toselect STEREO orMONO.
When bilingual programis received, press
this button toselect DUAL-1, DUAL-2 or
MONO.
The screen willdisplay NICAM orA2 when
such broadcast isreceived.
STEREO
MONO
DUAL-1
DUAL-2
Stereo mode.
Mono mode.
Multi-sound channel for language 1.
Multi-sound channel for language 2.
1
3
4
Mode Description
CHANNEL UP /DOWN
5buttons
Press these buttonsto select channelsin
ascending or descendingorder.
VOLUME UP / DOWN buttons
Press these buttonsto adjust thevolume level
up or down.
6
CH+
VOL
55
66
CH-
+VOL -

-20-
Operation Instructions
2 3
56
9
8
7
0
MENUMENU VOL.+VOL.-
I/II
P.M .
AV OK
SYS
Q.
VIEW
CH
CH
XX
MIX INDEX LANGUAGE
REVEAL SIZE SUB. PAGE
4
1
HOLD
- /- -
Remote Control Unit MUTE button
Press once tomute the sound. Press again
to restore thesound volume.
QUICK VIEW
Press this buttonto return tothe previously
viewed program.
7
8
DIGIT button
This TV allowsyou to selectchannels from
0 to 255.
Press this buttonto select one-digit,two-
digit or three-digitchannels input options.
Toselect a one-digit channel (e.g. Channel
8), press this button to change
channel selection to"-" on screendisplay
and press the"8" button only.
Toselect a two-digit channel (e.g. Channel
28), press this button to change
channel selection to"--" on screendisplay
and press "2"and "8" buttons.
Toselect a three-digit channel (e.g. Channel
128), press this button to change
channel selection to"---" on screendisplay
and press "1", "2"and"8" buttons.
--/---
10
CHANNEL SELECTION buttons
Press the numberbuttons to selecta channel.
11
PICTURE MODEPICTURE MODEbutton
Press this buttonto select thedesired
picture mode.
CUSTOM RICH
STANDARD SOFT
9
CUSTOM
SOFT
RICH
STANDARD
Picture Mode Description
User preset picture mode.
Low contrast and low brightness level.
Middle contrast and middle brightness level.
High contrast and high brightness level.
99
88
77
1111
1010
button
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