Teac CT-M342 Bedienungsanleitung

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)

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

Fig.1

UNIT

dbuv

cd / m2

MHz

LINES

METER

DEGREE

WATTS

STANDARD

< 57

< 60

< 42

< 48

> 60

> 35

> 40

< 45

> +300

> 6

> 400

> 140

> 1

> 0.7

< -40

> +1

> -0.5

< 20

> 300

> 400

< 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

Fig.2

STANDARD

< 57

< 60

< 42

< 48

> 60

> 35

> 40

< 45

> +300

> 6

> 400

> 120

> 1.8

> 1.3

< -40

> +1

> -0.5

< 20

> 300

> 400

< 10

< 5

> 5

> +15

< 70

< 85

< 0.4

< 0.8

UNIT

dbuv

cd/m2

MHz

LINES

METER

DEGREE

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

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

FB - FC

32.7

39.2

6.5

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

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

FB - FC

32.7

39.2

6.5

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

-2

0 ~ -2

0 ~ +5

-5 ~ -1

-2 ~ +2

0 ~ +5

88 ~ 92

88 ~ 94

90 ~ 95

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.

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

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.

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