Service Manuals, User Guides, Schematic Diagrams or docs for : teac TV CTM4828H2
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SERVICE MANUAL
48cm CTV
Effective: MARCH 2000 CTM4828HSERV
SERVICE MANUAL
14" 20" 21"
SOLID STATE
Color Television
Receiver
PAL SECAM VERSION
ART-TECH. TV.
TOSHIBA I2 C IC
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.
Document : ___________
SM - 32PM 5-11-99
Date : ___________ Approved by : ___________
( Sunny Cheung )
Checked by : ________________________________________________________
(PAK FUNG PAN WONG YIM FAI)
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-32PM P.1
MODEL : 14"
ITEMS OF MEASUREMENT STANDARD UNIT
VIDEO SENS. AT S/N 30db L - VHF < 57 dbuv
H - VHF < 57 dbuv
UHF < 60 dbuv
SOUND SENS. AT S/N 30db L - VHF < 42 dbuv
H - VHF < 42 dbuv
UHF < 48 dbuv
AGC CHARACTER > 60 db
SELECTIVITY -1.5 MHz > 35 db
+ 8 MHz > 40 db
COLOR SENS. < 45 dbuv
COLOR LOCK - IN RANGE > +300 Hz
VERTICAL LOCK - IN RANGE >6 Hz
HORIZONTAL LOCK - IN RANGE > 400 Hz
MAX BRIGHTNESS > 140 cd / m2
MAX OUTPUT POWER >1 W
OUTPUT POWER AT 10% THD > 0.7 W
BUZZ < -40 db
AFC RANGE > +1 MHz
> -0.5 MHz
MIN. VOL HUM < 20 mV
RESOLUTION HORIZONTAL > 300 LINES
VERTICAL > 400 LINES
LINEARITY DISTORTION VERTICAL < 10 %
HORIZONTAL < 10 %
RASTER DISTORTION <5 %
REMOTE CONTROL DISTANCE >5 METER
ANGLE > +15 DEGREE
POWER CONSUMPTION ( AT NORMAL CONDITION ) < 60 WATTS
POWER CONSUMPTION ( AT MAX. CONDITION ) < 70 WATTS
CONVERGENCE DISLOCATION AT AREA "A" < 0.4 %
AREA "B" < 0.8 %
( see fig.1 )
H
A B
VIDEO INPUT LEVEL : 1.0V P-P + 3dB
AUDIO INPUT LEVEL : 0.5V RMS + 3dB Fig.1
SM - 32PM P.2
MODEL : 20" - 21"
ITEMS OF MEASUREMENT STANDARD UNIT
VIDEO SENS. AT S/N 30db L - VHF < 57 dbuv
H - VHF < 57 dbuv
UHF < 60 dbuv
SOUND SENS. AT S/N 30db L - VHF < 42 dbuv
H - VHF < 42 dbuv
UHF < 48 dbuv
AGC CHARACTER > 60 db
SELECTIVITY -1.5 MHz > 35 db
+ 8 MHz > 40 db
COLOR SENS. < 45 dbuv
COLOR LOCK - IN RANGE > +300 Hz
VERTICAL LOCK - IN RANGE >6 Hz
HORIZONTAL LOCK - IN RANGE > 400 Hz
MAX BRIGHTNESS > 120 cd/m2
MAX OUTPUT POWER > 1.8 W
OUTPUT POWER AT 10% THD > 1.3 W
BUZZ < -40 db
AFC RANGE > +1 MHz
> -0.5 MHz
MIN. VOL HUM < 20 mV
RESOLUTION HORIZONTAL > 300 LINES
VERTICAL > 400 LINES
LINEARITY DISTORTION VERTICAL < 10 %
HORIZONTAL < 10 %
RASTER DISTORTION <5 %
REMOTE CONTROL DISTANCE >5 METER
ANGLE > +15 DEGREE
POWER CONSUMPTION ( AT NORMAL CONDITION ) < 70 WATTS
POWER CONSUMPTION ( AT MAX. CONDITION ) < 85 WATTS
CONVERGENCE DISLOCATION AT AREA "A" < 0.4 %
AREA "B" < 0.8 %
( see fig.2 )
H
A B
VIDEO INPUT LEVEL : 1.0V P-P + 3dB
AUDIO INPUT LEVEL : 0.5V RMS + 3dB
Fig.2
SM - 32PM P.3
SPECIFICATION
SUPPLY VOLTAGE : AC220V 50Hz > + 10% / -20% MODEL : 14"
PAL - SECAM - PAL - SECAM -
SYSTEM : PAL - I / I PAL - BG PAL - I BG / DK BG / DK PAL - BG PAL - BG SECAM - L L'
(UK) ( HYPER ) ( HYPER ) ( CATV )
CHANNEL L - VHF : 2-4 1-5 1-5 E2 - S10 E2 - S2 FB - FC CH
H - VHF : 4 - 13 5 -12 6 - 12 6 - 12 E5 - S41 E5 - S20 1-Q CH
UHF : 21 - 69 21 - 69 21 -69 21 - 69 21 - 69 E21 - E69 E21 - E69 21 - 69 CH
VIF FREQUENCY : 38.9 38.9 39.5 38.0 38.9 38.9 38.9 38.9 32.7 MHz
SIF FREQUENCY : 32.9 33.4 33.5 31.5 32.5 32.4 33.4 33.4 33.4 32.4 39.2 MHz
CHROMA IF FREQUENCY : 34.47 34.47 35.07 33.57 33.57 34.47 34.47 34.47 34.47 34.47 MHz
INTER-CARRIER FREQUENCY : 6.0 5.5 6 6.5 5.5 6.5 5.5 5.5 5.5 6.5 6.5 MHz
SCANNING HORIZONTAL : 15625 LINE
VERTICAL : 50 Hz
ANTENNA INPUT IMPEDANCE : 75 OHM
CRT : 14"
SM -32PM P.4
SPECIFICATION
SUPPLY VOLTAGE : AC220V 50Hz > + 10% / -20% MODEL : 20" - 21"
PAL - SECAM - PAL - SECAM -
SYSTEM : PAL - I / I PAL - BG PAL - I BG / DK BG / DK PAL - BG PAL - BG SECAM - L L'
(UK) ( HYPER ) ( HYPER ) ( CATV )
CHANNEL L - VHF : 2-4 1-5 1-5 E2 - S10 E2 - S2 FB - FC CH
H - VHF : 4 - 13 5 -12 6 - 12 6 - 12 E5 - S41 E5 - S20 1-Q CH
UHF : 21 - 69 21 - 69 21 -69 21 - 69 21 - 69 E21 - E69 E21 - E69 21 - 69 CH
VIF FREQUENCY : 38.9 38.9 39.5 38.0 38.9 38.9 38.9 38.9 32.7 MHz
SIF FREQUENCY : 32.9 33.4 33.5 31.5 32.5 32.4 33.4 33.4 33.4 32.4 39.2 MHz
CHROMA IF FREQUENCY : 34.47 34.47 35.07 33.57 33.57 34.47 34.47 34.47 34.47 34.47 MHz
INTER-CARRIER FREQUENCY : 6.0 5.5 6 6.5 5.5 6.5 6.5 5.5 5.5 6.5 6.5 MHz
SCANNING HORIZONTAL : 15625 LINE
VERTICAL : 50 Hz
ANTENNA INPUT IMPEDANCE : 75 OHM
CRT : 20" - 21"
SM - 32PM P.5
ALIGNMENT INSTRUCTION
I.PLEASE READ BEFORE ATTEMPTING SERVICE
1.Do not connect any antenna plug directly to the tuner socket and do not
connect any equipments directly to the TV chassis,otherwise it may be
burnt out the TV or equipment,execept an isolation transformer is used for
main power source or the TV sets.
2.Never disconnect any leads while receiver is in operation.
3.Disconnect all power before attempting any repairs.
4.Do not short any portion of the circuit while power is on.
5.For safety reasons,all parts replaced should be identical(for parts and
part numbers see parts list).
6.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.
II.TEST EQUIPMENT
1.Colour Bar/Dot/Cross Hatch 5.High Voltage Meter
2.Oscilloscope 6.Ampere Meter (0.5 Class,DC 3mA Max.)
3.Vacuum Tube Voltmeter 7.Demagnetizing Coil
4.Volt Ohumeter 8.Closed Caption Encoder
9.High Pot Tester.
I. B+ ADJUSTMENT
1.Connect a digital voltmeter to B+ and Ground.
2.Set Brightness Contrest to minimum.
3.Adjust Screen Volume on FBT until the picture can just been seen.
4.Adjust VR901 to obtain a reading of 112 + 0.5V(FOR samsung CRT).
II. AFC ALIGNMENT
1.Disconnect the soldering pad `F'.
2.Input the signal from Pattern Generator ( IF 38.9MHz ) colour bar to R101 and GND.
3.Adjust the T101 until the colour bar show on the screer.
4.Select `SELF VCO'in D-MODE.
5.Press the AFC button on the handset.
6.About few seconds screen willbe show AFT OK.
*REMARK: No this factory on Normal R.C.
III.AGC ALIGNMENT
1.Receive CH69 (UHF) and input filed strangth. TUNER INput Signal 62 + 3dB,
2.Connect a digital Voltmeter between the TUNER AGC Terminal and Ground.
3.Select RAGC item,Adjust the value to 3F,and then adjust the AGC value obtain the voltage drop down 0.4V.
Remark: 1 The drop down voltage should be more than and tends to 0.4V.
2 No observable noise can be seen.
IV.VERTICAL LINEARTY ADJUSTMENT
1.PAL (50Hz)Adjustment
(1).Reneive Crosshatch Pattern (50Hz) .
(2).Select VLIS item adjust value to normal regular picture.
2.NTSC (60Hz) Adjustment.
(1).Reneive Cross hatch Patter (60Hz).
(2).Select VILN item adjust value to normal regular picture.
3.Repeat 1.2. receive Cross hatch 50Hz and 60Hz is same picture.
V. VERTICAL HEIGHT ADJUSTMENT
1.PAL (50Hz) Adjust .
(1).Recive Mono scope Patter (50Hz).
(2).Select HITS item adjust value to normal regular picture.
2.NTSC (60Hz).
(1).Receive Mono scope Patter (60Hz).
(2).Select HIT item adjust value to normal regular picture
3.Repeat 1.2. receive Mono Scope Patter 50Hz and 60Hz is same picture.
SM-32PM P.6
VI.VERTICAL S-CORRECTION ADJUSTMENT
1. Receive Cross hatch Pattern
2. Select VSC item adjust value to normal,regular picture.
VERTICAL CENTER ADJUSTMENT
1. PAL (50Hz) Adjustment
(1). Receive Monscope Pattern (50Hz).
(2). Select VP50 item adjust value to obtain the picture at center .
2. NTSC (60Hz) Adjustment
(1). Receive Monscope Pattern (60Hz).
(2). Select VP60 item adjust value to obtain the picture at center.
3. Repeat 1.2. receive Mono Sope Pattern 50Hz and 60Hz is same picture center.
VII. HORIZONTAL PHASE ADJUSTMENT
1.PAL(50Hz)Adjustment.
(1).Receive Mono Scope Pattern (50Hz).
(2).Select HPS item adjust value to normal regular Picture.
2.NTSC(60Hz)
(1).Receive Mono Scope Pattern (60Hz).
(2).Select HPOS item adjust value to normal regular Picture.
3.Repeat 1. 2. receive Mono Scope Pattern (50Hz) and (60Hz) is Same Picture.
CENTRE (mm) SCANNING
SCANNING
DISTRICT LIMIT (mm) SIZE
POSITION SIZE (%)
LIMIT (%)
THAILAND -1 0 ~ -2 90 88 ~ 92
FRANCE +3 0 ~ +5 90 88 ~ 94
GERMANY +3 0 ~ +5 90 90 ~ 95
*GROUP A -2 -5 ~ -1 90 88 ~ 94
*GROUP B 0 -2 ~ +2 90 88 ~ 94
*GROUP C +3 0 ~ +5 90 88 ~ 94
mm -5 -4 -3 -2 -1 0 1 2 3 4 5 mm
LEFT CRT MUST RIGHT
FACE TO EAST
CENTER OF
THE SCREEN
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-32PM P.7
VIII. WHITE BALANCE ALIGNMENT STEP
(Deqauss the picture by deqaussing coil if necessary)
1. Disconnect the any input signal,set the blue black OFF.
2. Enter to D HODE.
3. Adjust the RCUT,GCUT,BCUT value to 80,GDRV,BDRV to 45,BRTS to CO.
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 CRT BOARD G2,(-) to GND and get the reading value.
7. Adjust the screen VR lead the reading value reduce 25 + 5v
8. Adjust the BRTS set to F6,and set BRIGHT,CONT to mid.
9. Receive a Black and White Pattern.
10. Select Remote handset direct key (2) and (3) button adjust GCUT and BCUT to minimum
value,Press(1) button adjust RCUT to middle value.
11. Press Picture mode, select Brightness and Contrast adjust value to minimum.
12. Press handset direct key (2) button to obtain a yellow line.
13. Press handset direct key (3) button to obtain a white line.
14. Press handset direct key (-/--) button again.
15. Press CH button select GDRV and BDRV item adjust value to make the
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