TEAC CTM-807-SV Service manual

SERVICE MANUAL

CTM807SV

68CM CTV

MAR03 CTM807SERV

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 HORIZONT AL :

VERTICAL : ANTENNA INPUT IMPEDANCE : CRT :

SM -38PM P. 1

PAL - I / I

4 - 13

21 - 69

38.9

32.9

34.47

6.0

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

1 - 5

6 - 12

21 - 69

38.0

31.5 32.5

33.57 33.57

6.5 5.5

PAL - SECAM -

BG / DK

( HYPER )

1 - 5

6 - 12

21 - 69

38.9

32.4 33.4

34.47 34.47

5.5 6.5

15625 LINE

50 Hz

75 OHM

34" 38"

PAL - BG

( HYPER )

E2 - S10 E5 - S41

E21 - E69

38.9

33.4

34.47

5.5

PAL - BG

( CATV )

E2 - S2

E5 - S20

E21 - E69

38.9

33.4

34.47

5.5

SECAM -

L

1 - Q

21 - 69

38.9

32.4

34.47

6.5

L'

FB - FC

32.7

39.2

6.5

P AL-DK

1-5

6-12

13-57

38

31.5

33.57

6.5

CH CH

CH MHz MHz MHz MHz

ITEMS OF MEASUREMENT VIDEO SENS. AT S/N 30db

L - VHF

H - VHF

UHF

STANDARD

34"

< 57 < 57 < 60

STANDARD

38" < 57 < 57 < 60

UNIT

dbuv dbuv dbuv

SOUND SENS. AT S/N 30db

AGC CHARACTER SELECTIVITY -1.5 MHz

+ 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

L - VHF

H - VHF

UHF

< 42 < 42 < 48

> 60 > 35

> 40 < 45 > +300 > 6 > 400 > 80 > 5.0 > 4.5 < -40 > +1

> -0.5

< 42 < 42 < 48

> 60 > 35

> 40 < 45 > +300 > 6 > 400 > 70 > 5.5 > 5.0 < -40 > +1

> -0.5

dbuv dbuv dbuv

db db

db

dbuv

Hz Hz Hz

cd/m2

W W db

MHz

MHz MIN. VOL HUM RESOLUTION HORIZONTAL

VERTICAL

LINEARITY DISTORTION VERTICAL

HORIZONTAL RASTER DISTORTION REMOTE CONTROL DISTANCE

ANGLE

POWER CONSUMPTION ( AT NORMAL CONDITION ) POWER CONSUMPTION ( AT MAX. CONDITION ) POWER CONSUMPTION ( W/WOO Fer ) CONVERGENCE DISLOCATION AT AREA "A"

AREA "B"

( see fig.1 )

< 20 > 300

> 400 < 8

< 10 < 5 > 5

> +15 < 140

< 160 < 180 < 0.4 < 0.8

< 20 > 300

> 400 < 8

< 10 < 5 > 5

> +15 < 170

< 180 < 200 < 0.4 < 0.8

H

A

mV

LINES LINES

% %

%

METER

DEGREE

WATTS WATTS WATTS

% %

B

VIDEO INPUT LEVEL : 1.0V P-P + 3dB AUDIO INPUT LEVEL : 0.5V RMS + 3dB

Fig.1

SM - 38PM P. 2

ALIGNMENT INSTRUCTION

123

I. PLEASE READ BEFORE ATTEMPTING SERVICE

1. Never disconnect any leads while receiver is in operation.

2. Disconnect all power before attempting any repairs.

3. Do not short any portion of the circuit while power is on.

4. For safety reasons, all parts replaced should be identical, ( for parts and part numbers see parts list ).

5. Before alignment the set must be pre-heated for 30 minutes or more and erase magnetism thoroughly from CRT front chassis frame by erase coil. ( Except IF, SYNC, COLOR, SECAM, B+, SOUND )

II.

TEST EQUIPMENT

1. Colour Bar, Dot, Cross Hatch Generator

2. DC Power Supply

3. Oscilloscope

4. Vacuum Tube Voltmeter

5. Volt Ohmmeter

6. High Voltage Meter

7. Ampere Meter ( 0.5 Class, DC 3mA Max )

8. Demagentizing Coil

9. Philips Pattern Generator

10. High Pot Tester

III. FACTORY ADJUSTMENT : See table 1- 4

1. Press REMOTE FACTOR Y ON button.

2. Press REMOTE FACTO RY button.

3. Press REMOTE UP or DOWN button select item.

4. Press REMOTE value (+) (-) button,adjust the value.

5. REMOTE DIALOG CENTRE button can turn off factory mode function. REMARK : NO this factory on Normal remote control .

IV.B+ ADJUSTMENT

1. Connect a digital voltmeter between the W237 and Ground.

2. Press REMOTE Picture button.

3. Press REMOTE UP/DOWN and value (-) button set Brigntness,contrast,color to minimum.

4. Adjust Screen Volume on FBT Until the picture can just been seen

5. Adjust VR901 and obtain a reading of 143V +1V (DC).

.

V. AGC ALIGNMENT

1. Receive CH69 ( UHF ) and input field strength.

2. Connect a digital voltmeter between the TUNER AGC TERMINAL and Ground.

3. Press REMOTE AGC button.

4. Press REMOTE value (+) (-) button adjust value to (0) and then adjust AGC take over value obtain drop down 0.4V. (DC) REMARK : ( 1/ The drop down voltage should be more than and tends to 0.2V ) ( 2/ No observable noise can be seen )

SM - 38PM P. 3

VI. SOUND TRACKING ALIGNMENT

1. Receive a gray scale pattern.

2. Connect a oscilloscope and monitor IC202 PIN 13 and Ground.

3. Adjust T200 to obtain the waveform Fig.6.Connect a volt meter to IC202 PIN15 and GND,adjust T200 to obtain 2.7+0.1V.

Fig.6

Remark: All frequency of Marker points are +0.2% tolerance.

VII. EAST - WEST CORRECTION ADJUSTMENT

1) Receive a crosshatch and center cross pattem.

2) Set the Brightness,contrast to middle position.

3) Press REMOTE EW-Par/wid,EW-trap button,Press REMOTE VALUE (+) (-) button adjust Value to normal regular picture.

4) Press REMOTE WE-width button,Press REMOTE value (+) (-) button adjust value to proper horizontal width ( 90% + 2% )

VIII. HORIZONT AL SHIFT ADJUSTMENT

1. Receive Monoscope Pattern input signal 70dB +10dB.

2. Press REMOTE H-shift button.

3. Press REMOTE value (+) (-) button adjust value to obtain the picture at center +2mm. ( Specification show in Fig.8 )

IX. VERTICAL LINEARTY ADJUSTMENT

1) Receive a cross hatch and center cross pattem.

2) Set the Brightness,contrast to middle position.

3) Press REMOTE V-SIope,S-Correction button,Press REMOTE Velue (+) (-) button adjust value to normal regular picture.

4) Press REMOTE V-Shift button,Press REMOTE Value (+) (-) button adjust value to obtain the picture at center.

X. VERTICAL AMPL ADJUSTMENT

1. Receive the Monoscope Pattern.

2. Press REMOTE V-ampl button.

3. Press REMOTE value (+) (-) button adjust value to obtain a normal picture.

XI. WHITE BALANCE ALIGNMENT STEP

( Degauss the picture by degaussing coil if necessary )

1. Receive a black and white pattern.

2. Press REMOTE picture button.

3. Press REMOTE UP/DOWN and value (-) button set the brightness,contrast, colour to minimun.

4. Adjust screen volume on FBT unitl the picture can just been seen.

5. Press REMOTE sub bri button.

6. Press REMOTE value (+) (-) button adjust value to (31).

7. Press REMOTE with bal button.

8. Press REMOTE Value (+) (-) button adjust value to (1) see the picture at horizontal line.

9. Adjust screen volume on FBT until the horizontal line can just been seen.

10. Repeat item 7.8 Can obtain normal screen.

SM - 38PM P. 4

XII.SUB - BRIGHTNESS ALIGNMENT

1. Receive a colour bar pattern.

2. Press REMOTE picture button,.

3. Press REMOTE UP/DOWN and value (-) button set the brightness, contrast to minimun.

4. Press REMOTE sub bright button.

5. Press REMOTE value (+) (-) button adjust value to brightess bar can just be seen.

XIII. FOCUS ALIGNMENT

1) Set the Brightness and Contrast to middle position.

2) Receive a monoscope pattern.

3) Adjust focus control to obtain sharpest picture.

XIV. PINCUSHION CORECTION ALIGNMENT

1. Thg TV Set face to east.

2. Receive a cross hatch patten.

3. Adjust VR020 to change the amplitude of pin cushion corection.

4. Adjust L020 to change the balance of horizontal line. Repeat item (3) , (4) until best condition. PCB 190-283300-20

XV. HIGH POT TESTING

1) Short the L - pole and N - pole of AC line cord.

2) Switch on the power switch of the TV Set.

3) Connect The High Pot Tester ( - ) to L and N pole, ( + ) to the METAL PART of CABINET.

CONDITION

SAFETY STD. VDE, SAA

BS CHINA STANDARD UL

TEST STANDARD

3.0KV 10mA / 1MIN

4.0KV 10mA / 1MIN

3.0KV 10mA / 1MIN

1.0KV 5mA / 1MIN

TEST ST ANDARD

FOR PRODUCTION

>3.5 KV <10mA / >10 SEC. >4.0 KV <10mA / >10 SEC. >3.3 KV < 5mA / > 6 SEC. >1.25KV < 5mA / > 1 SEC.

Remark:

1) If no other specify, the strength of input signal should be 70dB +10dB.

2) The High Pot Tester can have < +5% tolerance.

SM - 38PM P. 5

DISTRICT

CENTRE (mm)

POSITION

LIMIT (mm)

SCANNING

SIZE (%)

SCANNING

SIZE

LIMIT (%)

THAILAND FRANCE GERMANY *GROUP A *GROUP B *GROUP C

mm -5 -4 -3 -2 -1 0 1 2 3 4 5 mm

LEFT RIGHT

-1 +3 +3

-2

0

+3

0 ~ -2 0 ~ +5 0 ~ +5

-5 ~ -1

-2 ~ +2 0 ~ +5

CENTRE OF

THE SCREEN

90 90 90 90 90 90

CRT MUST FACE TO EAST

88 ~ 92 88 ~ 94 90 ~ 95 88 ~ 94 88 ~ 94 88 ~ 94

FIG. 8

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, ITAL Y, GERMANY, RUSSIA, SWITZERLAND, JUGOSLAVIA, SPANISH. If the above countries are not include, please consult to Engineering Dept.

SM - 38PM P. 6

FACTORY MODE TABLE 1

REF

ITEM

REMARK

VALUE

AVL

1

2

3

4

5

POWER

TDA884X

S.SYS

LOGO

CTI

OSD.

6

LANGUAGE ANTENNE

7

WOOFER

0

P

3

1

2

1

0 0 0

1

0= OFF 1 = SHORT DECAY 2 = MEDIUM DECAY 3=LONG DECA Y

O = TV Status S = Power Status P = Last power status

1=PAL/NTSC.W/O EW 3=PAL/NTSC.W/EW 2=PAL/SECAM/NTSC.W/O EW 4=PAL/SECAN/NTSC,W/EW

1=DK/I 2=BG/DK

3=DK/I/M 1=NIL 4=Haier 2=ROWA (TEAC CPU=TEAC) 3=CAIXING

0 = OFF 1 = ON

0 = NO BACKGROUD 1 = W/BACKGROUD 0 = ENGLISH 1 = RUSSIAN

0 = NO ANTENNE 1 = ANTENNE

0 = OFF 1 = ON

4=BG/DK/I/M 5=I 6=BG

8

9

10

11

12

13

TEXT TUNE

LANGUAGE BLUE STR

AV NO

KARAOKE DVD TX 16 : 9

BBE

HALF SCR

0 0

1 0

0 0

1

0

0 = OFF 1 = ON (W/TEXT See 1)

0 = NO POWER ON AUTO TUNER 1 = POWER ON AUTO TUNER

0 = ENGLISH ONLY 1 = CHINESE/ENGLISH

0 = OFF 1 = ON 1 = TV/AV1/AV2/AV3/S-VHS

2 = TV/AV1/AV2/S-VHS 3 = TV/AV1/AV2

0 = OFF 1= ON

0 = OFF:DVD 1= ON:DVD 0 = 4 : 3 1= 16 : 9

0 = OFF 1 = ON

0 = Picture 1 = HACF Picture

SM - 38PM P. 7

FACTORY MODE TABLE 2

ITEM

1

H-SHIFT

2

V-SLOPE

3

V-AMPL

4

S-COR

5

V-SHIFT

6

EW-WIDTH

V ALUE

ADJUST

RANGE

C0-ff

0-3f

40-7f

80-Bf

0-3f

REF

VALUE

e3

2b

68

86

9

36

REMARK

W/O CTI set 80-8f

For TV set Adjustment

For TV set Adjustmant

7

EW-PAR/WID

8

EW-CORNER

9

EW-TRAP

10

CTR L0

11

CTR L1

12

AGC

13

ARJ IF PLL

0-3f

40-7f

16

14

2a

3

d0

45

40

For TV set Adjustment

NON-Adjustable V alue

NON-Adjustable V alue W/SCART set 0-3f

For TV set Adjustment

For TV Set IF Frequency 40 = 38.90 MHz 80 = 33.40 MHz 60 = 38.00 MHz CI = 33.90 MHz

SM - 38PM P. 8