Teac CT-M342 User manual

SERVICE MANUAL
34 cm CTV
Effective: MAY 2000 CTM342HSERV

SERVICE MANUAL
14" 20" 21"
SOLID STATE
Color Television
Receiver
ART-TECH. TV.
This manual is the latest at the time of printing, and does not include the modification
which may be made after the printing, by the constant improvment of product.
Checked by:________________________________________________________
Document:___________ Approved by: ___________Date: ___________
SM - 32PM ( Sunny Cheung )
(PAK FUNG PAN WONG YIM FAI)
2
TOSHIBA I C IC
PALSECAM VERSION
5-11-99

CONTENTS
1. SPECIFICATION.....................................
2. BLOCK DIAGRAM..................................
3. ALIGMENT INSTRUCTION.......................
4. VOLTAGE TABLE...................................
5. IC601 DATA...........................................
6. WIRING DIAGRAM.................................
This manual is the tatest at the time of
Printing , and does not include the moditieation
Which may be made ofter the Printing, by the
Constant improvement of Product.
SM-32PMP.1

ITEMS OF MEASUREMENT
VIDEO SENS. AT S/N 30db
SOUND SENS. AT S/N 30db
AGC CHARACTER
SELECTIVITY -1.5MHz
+ 8 MHz
COLOR SENS.
COLOR LOCK - IN RANGE
VERTICAL LOCK-IN RANGE
HORIZONTAL LOCK - IN RANGE
MAX BRIGHTNESS
MAX OUTPUT POWER
OUTPUT POWER AT 10% THD
BUZZ
AFC RANGE
MIN. VOL HUM
RESOLUTION HORIZONTAL
VERTICAL
LINEARITY DISTORTION VERTICAL
HORIZONTAL
RASTER DISTORTION
REMOTE CONTROL DISTANCE
ANGLE
POWER CONSUMPTION(ATNORMALCONDITION)
POWER CONSUMPTION(ATMAX.CONDITION)
CONVERGENCE DISLOCATION AT AREA "A"
AREA "B"
( see fig.1 )
VIDEO INPUT LEVEL: 1.0V P-P+3dB
AUDIO INPUT LEVEL: 0.5V RMS +3dB
L-VHF
H-VHF
UHF
L-VHF
H-VHF
UHF
B
A
Fig.1
UNIT
dbuv
dbuv
dbuv
dbuv
dbuv
dbuv
db
db
db
dbuv
Hz
Hz
Hz
cd / m2
W
W
db
MHz
MHz
mV
LINES
LINES
%
%
%
METER
DEGREE
WATTS
WATTS
%
%
H
STANDARD
< 57
< 57
< 60
< 42
< 42
< 48
> 60
> 35
> 40
< 45
> +300
> 6
> 400
> 140
> 1
> 0.7
< -40
> +1
> -0.5
< 20
> 300
> 400
< 10
< 10
< 5
> 5
> +15
< 60
< 70
< 0.4
< 0.8
MODEL: 14"
SM - 32PM P.2

ITEMS OF MEASUREMENT
VIDEO SENS. AT S/N 30db
SOUND SENS. AT S/N 30db
AGC CHARACTER
SELECTIVITY -1.5MHz
+ 8 MHz
COLOR SENS.
COLOR LOCK - IN RANGE
VERTICAL LOCK-IN RANGE
HORIZONTAL LOCK - IN RANGE
MAX BRIGHTNESS
MAX OUTPUT POWER
OUTPUT POWER AT 10% THD
BUZZ
AFC RANGE
MIN. VOL HUM
RESOLUTION HORIZONTAL
VERTICAL
LINEARITY DISTORTION VERTICAL
HORIZONTAL
RASTER DISTORTION
REMOTE CONTROL DISTANCE
ANGLE
POWER CONSUMPTION(ATNORMALCONDITION)
POWER CONSUMPTION(ATMAX.CONDITION)
CONVERGENCE DISLOCATION AT AREA "A"
AREA "B"
( see fig.2 )
VIDEO INPUT LEVEL: 1.0V P-P+3dB
AUDIO INPUT LEVEL: 0.5V RMS +3dB
L-VHF
H-VHF
UHF
L-VHF
H-VHF
UHF
H
B
A
Fig.2
STANDARD
< 57
< 57
< 60
< 42
< 42
< 48
> 60
> 35
> 40
< 45
> +300
> 6
> 400
> 120
> 1.8
> 1.3
< -40
> +1
> -0.5
< 20
> 300
> 400
< 10
< 10
< 5
> 5
> +15
< 70
< 85
< 0.4
< 0.8
UNIT
dbuv
dbuv
dbuv
dbuv
dbuv
dbuv
db
db
db
dbuv
Hz
Hz
Hz
cd/m2
W
W
db
MHz
MHz
mV
LINES
LINES
%
%
%
METER
DEGREE
WATTS
WATTS
%
%
MODEL: 20"-21"
SM - 32PM P.3

SUPPLY VOLTAGE : AC220V 50Hz > + 10% / -20%
SPECIFICATION
SYSTEM:
CHANNEL L - VHF :
H - VHF :
UHF :
VIF FREQUENCY :
SIF FREQUENCY :
CHROMA IF FREQUENCY:
INTER-CARRIER FREQUENCY:
SCANNING HORIZONTAL :
VERTICAL :
ANTENNA INPUT IMPEDANCE:
CRT:
PAL - BG
2 - 4
5 -12
21 - 69
38.9
33.4
34.47
5.5
PAL - I
(UK)
21 -69
39.5
33.5
35.07
6
PAL - SECAM -
BG / DK
( HYPER )
1 - 5
6 - 12
21 - 69
38.9
32.4 33.4
34.47 34.47
6.5 5.5
PAL - BG
( CATV )
E2 - S2
E5 - S20
E21 - E69
38.9
33.4
34.47
5.5
PAL - I / I
4 - 13
21 - 69
38.9
32.9
34.47
6.0
PAL - SECAM -
BG / DK
1 - 5
6 - 12
21 - 69
38.0
31.5 32.5
33.57 33.57
6.5 5.5
PAL - BG
( HYPER )
E2 - S10
E5 - S41
E21 - E69
38.9
33.4
34.47
5.5
L'
FB - FC
32.7
39.2
6.5
CH
CH
CH
MHz
MHz
MHz
MHz
15625 LINE
50 Hz
75 OHM
14"
SECAM - L
1 - Q
21 - 69
38.9
32.4
34.47
6.5
MODEL : 14"
SM -32PM P.4

SUPPLY VOLTAGE : AC220V 50Hz > + 10% / -20%
SPECIFICATION
SYSTEM:
CHANNEL L - VHF :
H - VHF :
UHF :
VIF FREQUENCY :
SIF FREQUENCY :
CHROMA IF FREQUENCY:
INTER-CARRIER FREQUENCY:
SCANNING HORIZONTAL :
VERTICAL :
ANTENNA INPUT IMPEDANCE:
CRT:
PAL - BG
2 - 4
5 -12
21 - 69
38.9
33.4
34.47
5.5
PAL - I
(UK)
21 -69
39.5
33.5
35.07
6
PAL - SECAM -
BG / DK
( HYPER )
1 - 5
6 - 12
21 - 69
38.9
32.4 33.4
34.47 34.47
6.5 6.5
PAL - BG
( CATV )
E2 - S2
E5 - S20
E21 - E69
38.9
33.4
34.47
5.5
PAL - I / I
4 - 13
21 - 69
38.9
32.9
34.47
6.0
PAL - SECAM -
BG / DK
1 - 5
6 - 12
21 - 69
38.0
31.5 32.5
33.57 33.57
6.5 5.5
PAL - BG
( HYPER )
E2 - S10
E5 - S41
E21 - E69
38.9
33.4
34.47
5.5
L'
FB - FC
32.7
39.2
6.5
CH
CH
CH
MHz
MHz
MHz
MHz
15625 LINE
50 Hz
75 OHM
20" - 21"
SECAM - L
1 - Q
21 - 69
38.9
32.4
34.47
6.5
SM - 32PM P.5
MODEL : 20" - 21"

SM-32PMP.6
ALIGNMENT INSTRUCTION
I.PLEASE READ BEFORE ATTEMPTING SERVICE
1.Donot connect anyantennaplug directlytothetuner socketanddo not
connect any equipments directly to the TV chassis,otherwise it may be
burnt outthe TV orequipment,execeptan isolationtransformeris used for
main power source or the TV sets.
2.Neverdisconnect any leadswhilereceiveris in operation.
3.Disconnectall power beforeattemptinganyrepairs.
4.Do not short any portion of the circuit while power is on.
5.Forsafety reasons,all partsreplacedshould be identical(forpartsand
part numbers see parts list).
6.Beforealignment thesetmust be pre-heatedfor 30 minutesormore and
erase magnetism thoroughly from CRT front chassis frame by erase coil.
II.TEST EQUIPMENT
1.ColourBar/Dot/Cross Hatch
2.Oscilloscope
3.VacuumTubeVoltmeter
4.Volt Ohumeter
I. B+ ADJUSTMENT
1.Connecta digital voltmetertoB+and Ground.
2.Set Brightness Contrest to minimum.
3.AdjustScreen Volume on FBTuntilthe picture canjustbeen seen.
4.Adjust VR901to obtaina readingof 112 +0.5V(FORsamsung CRT).
II. AFC ALIGNMENT
1.Disconnect the soldering pad ‘F’.
2.Inputthe signal fromPatternGenerator( IF 38.9MHz)colourbar to R101andGND.
3.Adjustthe T101 untilthecolour barshowonthe screer.
4.Select ‘SELF VCO’in D-MODE.
5.Pressthe AFC buttononthe handset.
6.About few seconds screen willbe show AFT OK.
*REMARK:No this factoryonNormal R.C.
III.AGC ALIGNMENT
1.Receive CH69(UHF) andinputfiled strangth.TUNER INputSignal62 +3dB,
2.Connectadigital Voltmeterbetween the TUNERAGCTerminal and Ground.
3.SelectRAGC item,Adjust thevalueto3F,and then adjusttheAGCvalue obtain the voltagedropdown0.4V.
Remark:1 The dropdownvoltage shouldbemorethan andtendsto 0.4V.
2 No observable noise can be seen.
IV.VERTICAL LINEARTY ADJUSTMENT
1.PAL(50Hz)Adjustment
(1).ReneiveCrosshatch Pattern (50Hz).
(2).SelectVLIS item adjustvaluetonormal regular picture.
2.NTSC(60Hz) Adjustment.
(1).ReneiveCross hatch Patter(60Hz).
(2).SelectVILN item adjustvaluetonormalregular picture.
3.Repeat 1.2. receive Cross hatch 50Hz and 60Hz is same picture.
V. VERTICAL HEIGHT ADJUSTMENT
1.PAL (50Hz) Adjust .
(1).ReciveMono scope Patter(50Hz).
(2).SelectHITS item adjustvaluetonormal regularpicture.
2.NTSC (60Hz).
(1).ReceiveMono scope Patter(60Hz).
(2).SelectHIT item adjustvaluetonormal regular picture
3.Repeat1.2. receive MonoScopePatter 50Hzand60Hzis samepicture.
5.HighVoltage Meter
6.AmpereMeter(0.5 Class,DC 3mAMax.)
7.DemagnetizingCoil
8.ClosedCaption Encoder
9.HighPotTester.

VI.VERTICAL S-CORRECTION ADJUSTMENT
1. Receive Cross hatch Pattern
2. SelectVSC itemadjustvalue to normal,regularpicture.
VERTICAL CENTER ADJUSTMENT
1.PAL(50Hz)Adjustment
(1).Receive Monscope Pattern(50Hz).
(2).Select VP50 itemadjustvalue toobtainthepicture atcenter.
2. NTSC (60Hz) Adjustment
(1). ReceiveMonscope Pattern (60Hz).
(2).Select VP60 itemadjustvalue toobtainthepicture atcenter.
3.Repeat 1.2.receiveMono Sope Pattern50Hzand 60Hzissame picture center.
VII. HORIZONTAL PHASE ADJUSTMENT
1.PAL(50Hz)Adjustment.
(1).ReceiveMonoScope Pattern (50Hz).
(2).SelectHPS item adjustvalueto normalregularPicture.
2.NTSC(60Hz)
(1).ReceiveMonoScope Pattern (60Hz).
(2).SelectHPOS item adjustvalueto normalregularPicture.
3.Repeat 1. 2.receiveMono ScopePattern(50Hz) and (60Hz)isSame Picture.
SM-32PMP.7
DISTRICT CENTRE (mm)
POSITION LIMIT(mm) SCANNING
SIZE(%)
SCANNING
SIZE
LIMIT(%)
THAILAND
FRANCE
GERMANY
*GROUP A
*GROUP B
*GROUP C
-1
+3
+3
-2
0
+3
0 ~ -2
0 ~ +5
0 ~ +5
-5 ~ -1
-2 ~ +2
0 ~ +5
90
90
90
90
90
90
88 ~ 92
88 ~ 94
90 ~ 95
88 ~ 94
88 ~ 94
88 ~ 94
mm -5 -4 -3 -2 -1 0 1 2 3 4 5 mm
LEFT RIGHT
CENTER OF
THE SCREEN
CRT MUST
FACE TO EAST
REMARK: 1. SUITABLE FOR 14" OR ABOVE TV.
2. Adjust the centre position must take the upper side of monoscope
pattern for standard.
3. Group A : AUSTRALIA, NEW ZEALAND, TAHITI.
4. Group B: HONG KONG, CHINA, AMERICA, CANADA, MALAYSIA,
MEXICO.
5. Group C: ENGLAND, ITALY, GERMANY, RUSSIA, SWITZERLAND,
JUGOSLAVIA, SPANISH.
If the above countries are not include, please consult to
Engineering Dept.

SM-32PMP.8
VIII. WHITE BALANCE ALIGNMENT STEP
(Deqaussthe picturebydeqaussing coilifnecessary)
1. Disconnect theany input signal,setthe blue blackOFF.
2. Enter to D HODE.
3.Adjust theRCUT,GCUT,BCUTvalue to 80,GDRV,BDRV to45,BRTStoCO.
4.Adjust the BRIGHT,CONT to min.
5. Akjust the screen VR (on the FBT) until the show cannot just be screen.
6. Connect the VOLT meter ‘+’ to CRTBOARD G2,(-) to GND and get the reading value.
7. Adjust thescreen VR leadthe reading valuereduce 25 + 5v
8. Adjust the BRTS set to F6,and set BRIGHT,CONT to mid.
9.
10.
IX. SUB-BRIGHTNESS ALIGNMENT
1. Receive a Colour Bar Pattern.
2.Press PICTUREmodeselect BRIGHTNESS, CONTRASTadjustvalue tominimum.
3. Select BRTS in D-MODE.
4. Adjust value the brightness bar can just be seen.
X. FOCUS ALIGHMENT
1. Set the Brightness and Contrast to middle position.
2.Receive a MonoscopePattern.
3. Adjust focus control to obtain sharpest picture.
¡C¡C
¡C¡C
¡C
XI. HIGH POT TESTING
1)Short the L-poleandN-pole of AClinecord.
2) Switch on the power switch of the TV Set.
3) Connect The High Pot Tester (-) to L and N pole, (+) to the
METAL PARTofCABINET.
REMARK:
(1). If no other specity,the strength of input signal should
be 70dB + 10dB.
(2). The HIGH POT TESTER can have < + 5% tolerance.
Receivea BlackandWhite Pattern.
SelectRemote handsetdirectkey (2) and(3)button adjust GCUTandBCUT tominimum
value,Press(1)button adjust RCUTtomiddlevalue.
Press Picture mode, select Brightness and Contrast adjust value to minimum.
Presshandset direct key(2)button to obtainayellow line.
Presshandset direct key(3)button toobtainawhite line.
Presshandset direct key(-/--)button again.
Press CH button select GDRV and BDRV item adjust value to make the
picture unifoumlywhite (9300K +3JND).
TEST SYANDARD
CONDITION
SAFETY STD. TEST STANDARN
FOR PRODUCTION
VDE,SAA 3.0KV 10mA / 1MIN >3.5KV <10mA / >10 SEC.
UL 1.0KV 5mA / 1MIN >1.25KV <5mA / >1 SEC.
11.
12.
13.
14.
15.
16.