PAL B/GPAL-SECAM B/G – D/KPAL I/IPAL B/G – SECAM L/L
mono
14”: 39W; 20”: 42W; 21 ”: 45W.
2.5W (at 60% mod, 10%THD)
3W 8 ohm
10 pages memory FASTEXT (FLOF or TOP)
– version with teletext only
75 ohm unbalanced
Off-air channels, S-cable channels and hyperband
frequency synthesiser tuning system
14 ” : 34 cm
20 ” : 48 cm
21 ” : 51 cm
On Screen Display
100 programmes
EURO-SCART : Audio / Video In and Out,
R/G/B In, Slow and Fast switching, SVHS In.
Audio-Video Jack on front of cabinet in common
connection with EURO-SCART.
Headphone jack (3.5 mm) on front of cabinet
IC DESCRIPTION ............................................................................................................................. 16
1
Page 3
SAFETY INSTRUCTION
WARNING :
X-RAY RADIATION PRECAUTION
1. Excessive high voltage can produce potentially hazardous X-RAY RADIATION. To avoid such hazards, the high
voltage must not exceed the specified limit. The nominal value of the high voltage of this receiver is 22-23 kV (14”) or
24-26 kV (20” - 21”) at max beam current. The high voltage must not, under any circumstances, exceed 27.5 kV (14”,
20”), 29KV (21”). Each time a receiver requires servicing, the high voltage should be checked. It is important to use an
accurate and reliable high voltage meter.
2. The only source of X-RAY Radiation in this TV receiver is the picture tube. For continued X-RAY RADIATION
protection, the replacement tube must be exactly the same type tube as specified in the parts list.
SAFETY PRECAUTION
1. Potentials of high voltage are present when this receiver is operating. Operation of the receiver outside the cabinet or
with the back cover removed involves a shock hazard from the receiver.
1)Servicing should not be attempted by anyone who is not thoroughly familiar with the precautions necessary when
working on high voltage equipment.
2)Discharge the high potential of the picture tube before handling the tube. The picture tube is highly evacuated and if
broken, glass fragments will be violently expelled.
2. If any Fuse in this TV receiver is blown, replace it with the FUSE specified in the Replacement Parts List.
3. When replacing a high wattage resistor (oxide metal film resistor) in circuit board, keep the resistor body 10 mm away
from the circuit board.
4. Keep wires away from high voltage or high temperature components.
5. This receiver must operate under AC 230 volts, 5O Hz. NEVER connect to a DC supply of any other voltage or
frequency.
Only competent service personnel may carry out work involving the testing or repair of this equipment
PRODUCT SAFETY NOTICE
Many electrical and mechanical parts in this equipment have special safety-related characteristics. These characteristics are
often passed unnoticed by a visual inspection and the X-RAY RADIATION protection afforded by them cannot necessarily be
obtained by using replacement components rated for higher voltage, wattage, etc. Replacement parts which have these special safety characteristics are identified in this manual and its supplements, electrical components having such features are
identified by designated symbol on the parts list. Before replacing any of these components, read the parts list in this manual
carefully. The use of substitutes replacement parts which do not have the same safety characteristics as specified in the parts
list may create X-RAY Radiation.
The TV set sweeps all the TV bands from beginning of VHF to the end of UHF. The TV controlling software for each program
checks if a VPS CNI code is transmitted. If no VPS CNI code is found, the system checks if a CNI code is transmitted in the teletext lines ( Packet 8/30 format 1 ). If such a code ( VPS or teletext ) is found and if this code is in the ATSS list, the program is
automatically named.
The programs found are then sorted into 4 groups :
Group I
sorting order is fixed by the ATSS list.
Group II
Group III
Group IV
with the lowest frequency) is listed in group I, II or III. The others are listed in group IV.
Note : If two programs with the same name but a different code are found these two programs are listed in group I, II or III (e.g.
Regional program SW3 in Germany).
The sorting order within group II, III, and IV is based on the channel frequency. The program with the lowest frequency is allocated the first rank in its group, and so forth until the last program of the group which has the highest frequency.
: Contains all the programs from the selected country and named by the TV controlling software. Within this group the
: Contains all the programs with a strong signal strength which are not listed in group I.
: Contains all the programs with a weak signal strength which are not listed in group I.
: If two or more programs with the same code are found, only the strongest (or if they have the same level the one
Program numberGroupSkip
1
2 Group I
...
n
n+1
... Group II
m
m+1
... Group III
p
p+1
... Group IV
q
Program numberGroupSkip
1
... Group II
m
m+1
... Group III
p
p+1
... Group IV
q
q+1
... not used 4
99
0
q+1
... not used 4
Special case :
Country selection = Others
99
0
Note
For TV versions without teletext, and if the controlling software is unable to catch the station name,
Group I will remain empty.
6
Page 8
SPECIFICATIONS
Special case :
France
If France is selected the TV controlling software firstly sweeps all the TV bands with France system selected (positive video
modulation) and secondly with Europe system selected (negative video modulation).
Special case :
Switzerland
If Switzerland is selected the TV controlling software firstly sweeps all the TV bands with Europe system selected (negative
video modulation) and secondly with France system selected (positive video modulation).
Special case :
GB
Note for satellite receiver users : Before starting ATSS turn On your satellite receiver and tune “ SKY NEWS “.
If GB is selected the TV controlling software seeks for programs only in UHF ( C21 to C70 ). The sorting order is :
1 - BBC1
2 - BBC2
3 - ITV
4 - CH4
5 - CH5
6 - NEWS
If two or more “ identical “programs ( same name but different code e.g. BBC1 and BBC1 Scotland ) are found the following programs in the list will be shifted up. (1 - BBC1, 2 - BBC1, 3 - BBC2, 4 - ITV, 5 - CH4, 6 - CH5, 7 - NEWS, ..)
If one of the program above is not found, the associated program number remains empty ( freq.=467.25 MHz - Skip selected no name – system = GB).
example A : 1 - BBC1, 2 - BBC2, 3 - ITV, 4 - -----, 5 - CH5, 6 - NEWS, ...
example B ( if 2 BBC1 found ) : 1 - BBC1, 2 - BBC1, 3 - BBC2, 4 - ITV, 5 - -----, 6 - CH5, 7 - NEWS, ...
To switch the TV set into service mode please see instruction below.
1 - Select pr. number 91
2 - Adjust sharpness to minimum and exit all menu.
3 - Quickly press the key sequence : RED - GREEN - menu
To exit SERVICE menu press menu key or Std By key.
In Service Mode press “OK” to stop the microcontroller i.e. the I2C bus is free and the set can be controlled by external equipment.
Press “OK” again to allow the microcontroller to control the set again
- TV in AV mode without video signal ? Black screen.
- TV preset with WP Red, WP Green and WP Blue equal to 32.
- TV preset with Black R, Black G equal to 8.
- Adjust screen volume ( on FBT ) such that the highest cathode cut-off voltage measured on CRT board, is Vcut-off ± 5V.
Screen sizeVcut-off
14”115 V
20” & 21”125 V
2 - White balance
- Select a dark picture and adjust Black G and Black R to the desired colour temperature.
- Select a bright picture and adjust WP Red, WP Green, WP Blue to the desired colour temperature.
9
Page 11
ALIGNMENT INSTRUCTIONS
3 - Focus
- Adjust the Focus volume ( on FBT ) to have the best resolution on screen.
4 - Vertical geometry
- Adjust the Vertical Amplitude, Shift, S-Correction and Slope
to compensate for vertical distortion
5 - Horizontal picture centering
- Adjust H Shift to have the picture in the center of the screen.
7 - AGC
- Adjust the antenna signal level to 70 dBµV± 2 for Daewoo tuner (62 dBµV± 2 for Philips tuner).
- Set RF AGC to 0.
- Increase RF AGC level and stop when the level on pin 6 of I501 goes below 2.5 Vdc
10
Page 12
AUDIO
VIDEO
Page 13
EXPLODED VIEW
17
16-1
REMARK S
MATERIAL
EPS 20D51PAD
LDPE T0.03X1300X1000
DW-3
150 ART P/E FILM(C/TV)1SPEC PLATE
HIPS BK
30X190 BK2
30X80 BK
CR T2.0
1
1
5 TT2 TRS 4X14 MFZN BK
BAG PE
CARTON BOX
16
4858193401
20
SCREW TAPPTITE
4858211800
4858055200
4855415800
7172401412
19
18
17
16-1
2SCREW CRT FIXING AS
1
1
COVER BACK
4852155601
16
4
111
SCREW CRT FIXING AS
RUBBER
MAIN PCB
4856214902
15
CRT
4856013300
4856013302
4856215402
14
14-3
14-2
14-1
4945801+5541201
HIPS BK
BUTTON CTRL
BUTTON
4851915401
4854945801
131211
PVC T1.0
TT2 WAS 3X12 MFZN BK
PMMA MILKY
1
DECO SENSOR
4855541201
HIPS BK
1
2
8
1
SCREW TAPPTIE
INSU PLATE
SPEAKER
MASK FRONT
4857618000
7128301212
4852073601
876
9
10
9-1
TT2 WAS 3X12 MFZN BK
CUAU+ABS BK
PC BK
11
DECO COVER
4855313101
HIPS BK
SWPA PIE 0.5
2
SCREW TAPPTIE
7128301212
4-1
1
1
PANEL
SPRING
4852326511
4856716000
432
ABS BK
EGI T0.5
2
1
PART NAMEQ'tyPART CODENo
BUTTON POWER
GRILL
4854856401
4852539601
1
2326511+4856401+6716000
1
1
MARK BRAND
PANEL FRONT
4855617500
4852067101
5
15
12
13
11
14-3
10-1
10
9-1
9
4-1
14-2
14
14-1
10-1
10
8
9-1
9
18
19
6
4
5
3
2
20
7
1
11
Page 14
PRINTED CIRCUIT BOARD
12
Page 15
SERVICE PARTS LIST
is a recommendable part for stock.
Caution
LOC.PART CODEPART NAMEPART DESCRIPTION
ZZ110PTACPWA21C6A ACCESSORY AS DTA-21C6TAF
001004850Q00910P BATTERY DAEWOO AAA
M821 4858213800 BAG POLY L.D.P.E.T0.5X250X40 MILK
ZZ10048B3740A01
R
ZZ120PTBCSHD616 COVER BACK AS DTP-21C6TFP
M211 4852151601 COVER BACK HIPS BK 21V1, V4, C6
M541 4855415800 S/PLATE 150ART P/E FILM (C/TV)
M542 4855800022 LABEL SERIAL ART 90 70X19
ZZ130PTPKCPA21C6A PACKING AS DTA-21C6TAF
10 6520010200 STAPLE PIN #3417 ALL
20 6520010200 STAPLE PIN #3417 ALL
M811 4858190700 PAD EPS 21C6
M821 4858211801 BAG P.E. PE FILM T0.05X1300X1000
ZZ140PTCACAA21C6AF CABINET AS DTA-21C6TAF
M191 4854943202 BUTTON CONTROL 21C6
M201A4856013301
M201B4856215402 WASHER RUBBER 20''
M201C4856013303
M211A7172401412 SCREW TAPPING TT2 TRS 4X14 MFZN BK
M211D7172401412 SCREW TAPPING TT2 TRS 4X14 MFZN BK
M481 4854943203 BUTTON POWER ABS BK 21C6
M551 4855538000 DECO SENSOR 21C6
M561 485562140101 MARK BRAND DAEWOO 14/20/21/C4/C6
M681 4856812001 TIE CABLE NYLON66 DA100
P402A4850706N06 CONN AS 35135-0620+35719+ULW=550
PWC1 4859906210 CORD POWER FTZ (LOMAX NEW TYPE)
SP01A7178301011 SCREW TAPPING TT2 WAS 3X10 MFZN
V901 4859607660C CRT (PHILIPS 21") A51EAL155X17 (CONN AS)
R
ZZ13158G0000074 COIL DEGAUSSING 21" DC-2070
ZZ13248519A5310 CRT GROUND AS 2101S-1015-1P
ZZ200PTFMSJD616 MASK FRONT AS DTP-21C6TFP
R
M201 4852071401 MASK FRONT HIPS BK 21C6
ZZ210PTSPPWA615 SPEAKER AS DTP-14C4TFD
P601A4850703S50 CONN AS YH025-03+3509=200
SP01 4858314010 SPEAKER SP-5070F01 3W 8 OHM
R305 RS02Y331JS R M-OXIDE FILM 2W 330 OHM J SMALL
R415 RS02Y102JS R M-OXIDE FILM 2W 1K OHM J SMALL
R450 RS02Y103JS R M-OXIDE FILM 2W 10K OHM J SMALL
R801 DT120B8010 POSISTOR T120-B80-A110
R802 RS02Y753JS R M-OXIDE FILM 2W 75K OHM J SMALL
R803 RS02Y473JS R M-OXIDE FILM 2W 47K OHM J SMALL
R804 RF02Y338K- R FUSIBLE 2W 0.33 OHM K
R808 RS02Y821JS R M-OXIDE FILM 2W 820 OHM J SMALL
R819 RX07C339JF R CEMENT 7W 3.3 OHM J 15MM 4P
R920 RF01Y209JA R FUSIBLE 1W 2 OHM J A CURVE
SCT1 4859303530 SOCKET CRT PCS629-03C
SF1 5PG1984M-- FILTER SAW G1984M
SF2 5PL9653M-- FILTER SAW L9653M
SW8015S40101146 SW POWER PUSH SS-160-7-B
R
T401 50D10A2--- TRANS DRIVE TD-10A2
R
T402 50H0000211 FBT 1142.5109
R
T801 20745046-- TRANS SMPS 2074.5046
U100 4859720730 TUNER VARACTOR UV1316/A
R
X502 5XE12R000E CRYSTAL QUARTZ HC-49/U 12.00000MHZ 30PPM
Z501 5PXPS5R5MB FILTER CERA TPS5.5MB-TF21 TAPING
ZZ200PTMPJRA21C6AF PCB MAIN RADIAL AS DTA-21C6TAF
C101 CEXF1H100V C ELECTRO 50V RSS 10MF (5X11) TP
C102 CEXF1H470V C ELECTRO 50V RSS 47MF (6.3*11) TP
C106 CEXF1E221V C ELECTRO 25V RSS 220MF (8X11.5) TP
C120 CCXB1H102K C CERA 50V B 1000PF K (TAPPING)
C121 CEXF1H100V C ELECTRO 50V RSS 10MF (5X11) TP
C152 CEXF1H229V C ELECTRO 50V RSS 2.2MF (5X11) TP
C153 CBXF1H104Z C CERA SEMI 50V F 0.1MF Z (TAPPING)
C154 CEXF1H479V C ELECTRO 50V RSS 4.7MF (5*11) TP
C155 CEXF1H479V C ELECTRO 50V RSS 4.7MF (5*11) TP
C156 CEXF1H479V C ELECTRO 50V RSS 4.7MF (5*11) TP
C305 CEXF1E221V C ELECTRO 25V RSS 220MF (8X11.5) TP
C313 CBXF1H104Z C CERA SEMI 50V F 0.1MF Z (TAPPING)
C320 CBXF1H104Z C CERA SEMI 50V F 0.1MF Z (TAPPING)
C390 CMXM2A473J C MYLAR 100V 0.047MF J TP
C401 CEXF1H470V C ELECTRO 50V RSS 47MF (6.3*11) TP
C412 CEXF2C339V C ELECTRO 160V RSS 3.3MF (8X16) TP
C414 CMXM2A104J C MYLAR 100V 0.1MF J TP
C417 CMXL2E104K C MYLAR 250V 0.1MF K MEU TP
C418 CCXB1H102K C CERA 50V B 1000PF K (TAPPING)
C420 CCXB2H222K C CERA 500V B 2200PF K (TAPPING)
LOC.PART CODEPART NAMEPART DESCRIPTION
C500 CEXF1H478V C ELECTRO 50V RSS 0.47MF (5X11) TP
C501 CEXF1H100V C ELECTRO 50V RSS 10MF (5X11) TP
C502 CEXF1H100V C ELECTRO 50V RSS 10MF (5X11) TP
C504 CMXM2A332J C MYLAR 100V 3300PF J TP
C509 CEXF1E470V C ELECTRO 25V RSS 47MF (5X11) TP
C511 CMXB1H224J C MYLAR 50V EU 0.22MF J(TP)
C512 CMXB1H224J C MYLAR 50V EU 0.22MF J(TP)
C513 CBXF1H104Z C CERA SEMI 50V F 0.1MF Z (TAPPING)
C514 CEXF1E101V C ELECTRO 25V RSS 100MF (6.3X11) TP
C517 CEXF1H109V C ELECTRO 50V RSS 1MF (5X11) TP
C519 CEXF1H229V C ELECTRO 50V RSS 2.2MF (5X11) TP
C522 CEXF1H479V C ELECTRO 50V RSS 4.7MF (5*11) TP
C524 CMXB1H104J C MYLAR 50V EU 0.1MF J (TP)
C525 CCXB1H102K C CERA 50V B 1000PF K (TAPPING)
C526 CMXB1H104J C MYLAR 50V EU 0.1MF J (TP)
C527 CMXM2A473J C MYLAR 100V 0.047MF J TP
C528 CEXF1E101V C ELECTRO 25V RSS 100MF (6.3X11) TP
C530 CEXF1C101V C ELECTRO 16V RSS 100MF (6.3X11) TP
C532 CEXF1H100V C ELECTRO 50V RSS 10MF (5X11) TP
C533 CCXB1H102K C CERA 50V B 1000PF K (TAPPING)
C537 CBXF1H104Z C CERA SEMI 50V F 0.1MF Z (TAPPING)
C555 CEXF1C470V C ELECTRO 16V RSS 47MF (5X11) TP
C560 CBXF1H104Z C CERA SEMI 50V F 0.1MF Z (TAPPING)
C564 CEXF1E101V C ELECTRO 25V RSS 100MF (6.3X11) TP
C565 CBXF1H104Z C CERA SEMI 50V F 0.1MF Z (TAPPING)
C570 CCXB1H472K C CERA 50V B 4700PF K (TAPPING)
C571 CCXB1H821K C CERA 50V B 820PF K (TAPPING)
C585 CCXB1H222K C CERA 50V B 2200PF K (TAPPING)
C590 CXCH1H270J C CERA 50V CH 27PF J (TAPPING)
C591 CXCH1H270J C CERA 50V CH 27PF J (TAPPING)
C592 CBXF1H104Z C CERA SEMI 50V F 0.1MF Z (TAPPING)
C593 CEXF1E101V C ELECTRO 25V RSS 100MF (6.3X11) TP
C599 CEXF1H229V C ELECTRO 50V RSS 2.2MF (5X11) TP
C600 CEXF1E101V C ELECTRO 25V RSS 100MF (6.3X11) TP
C601 CEXF1H108V C ELECTRO 50V RSS 0.1MF (5X11) TP
C602 CCXF1H103Z C CERA 50V F 0.01MF Z (TAPPING)
C650 CEXF1E470V C ELECTRO 25V RSS 47MF (5X11) TP
C770 CEXF1C101V C ELECTRO 16V RSS 100MF (6.3X11) TP
C803 CCXF3A472Z C CERA 1KV F 4700PF Z (T)
C804 CCXF3A472Z C CERA 1KV F 4700PF Z (T)
C806 CEXF1H330V C ELECTRO 50V RSS 33MF (6.3X11) TP
C807 CCXF1H473Z C CERA 50V F 0.047MF Z (TAPPING)
C808 CEXF1H479V C ELECTRO 50V RSS 4.7MF (5*11) TP
C821 CCXB1H102K C CERA 50V B 1000PF K (TAPPING)
C835 CEXF1H470V C ELECTRO 50V RSS 47MF (6.3*11) TP
C844 CEXF1E101V C ELECTRO 25V RSS 100MF (6.3X11) TP
C863 CEXF1E101V C ELECTRO 25V RSS 100MF (6.3X11) TP
C888 CEXF1C470V C ELECTRO 16V RSS 47MF (5X11) TP
C910 CCXB1H152K C CERA 50V B 1500PF K (TAPPING)
14
Page 17
SERVICE PARTS LIST
LOC.PART CODEPART NAMEPART DESCRIPTION
C968 CMXL2E104K C MYLAR 250V 0.1MF K MEU TP
CA04 CEXD1H229F C ELECTRO 50V RND 2.2MF (5X11) TP
CA05 CCXB1H102K C CERA 50V B 1000PF K (TAPPING)
F801A4857415001 CLIP FUSE PFC5000-0702
F801B4857415001 CLIP FUSE PFC5000-0702
Q101 T2SC5343Y- TR 2SC5343Y
Q152 T2SC5343Y- TR 2SC5343Y
Q154 T2SC5343Y- TR 2SC5343Y
Q155 T2SC5343Y- TR 2SC5343Y
Q402 T2SD1207T- TR 2SD1207-T (TAPPING)
Q501 TSTA933Y-- TR STA933-Y
Q502 T2SC5343Y- TR 2SC5343Y
Q503 T2SC5343Y- TR 2SC5343Y
Q510 TSTA933Y-- TR STA933-Y
Q511 TSTA933Y-- TR STA933-Y
Q520 T2SC5343Y- TR 2SC5343Y
Q807 T2SC5343Y- TR 2SC5343Y
Q808 T2SC5343Y- TR 2SC5343Y
Q809 T2SC5343Y- TR 2SC5343Y
Q810 T2SC5343Y- TR 2SC5343Y
Q811 T2SC5343Y- TR 2SC5343Y
SW7005S50101090 SW TACT SKHV17910A
SW7015S50101090 SW TACT SKHV17910A
SW7025S50101090 SW TACT SKHV17910A
SW7035S50101090 SW TACT SKHV17910A
SW7045S50101090 SW TACT SKHV17910A
Z603 5PXF1B471M FILTER EMI CFI 06 B 1H 470PF
Z605 5PXF1B471M FILTER EMI CFI 06 B 1H 470PF
Z606 5PXF1B471M FILTER EMI CFI 06 B 1H 470PF
Z630 5PXF1B471M FILTER EMI CFI 06 B 1H 470PF
ZZ200PTMPJAA21C6AF PCB MAIN AXIAL AS DTA-21C6TAF
10 2TM10006LB TAPE MASKING 3M #232-MAP-C 6.2X2000M
20 2TM14006LB TAPE MASKING 3M #232 6.0X2000M
A001 4859804593 PCB MAIN 246X246 CP-185
C103 CCZB1H102K C CERA 50V B 1000PF K (AXIAL)
C104 CCZB1H102K C CERA 50V B 1000PF K (AXIAL)
C150 CCZF1H103Z C CERA 50V F 0.01MF Z
C350 CCZF1H473Z C CERA 50V F 0.047MF Z AXIAL
C351 CCZF1H473Z C CERA 50V F 0.047MF Z AXIAL
C515 CBZR1C222M C CERA Y5R 16V 2200PF M AXIAL
C516 CCZB1H472K C CERA 50V B 4700PF K (AXIAL)
C518 CBZF1H104Z C CERA SEMI 50V F 0.1MF Z (AXIAL)
C520 CCZB1H102K C CERA 50V B 1000PF K (AXIAL)
C521 CCZB1H102K C CERA 50V B 1000PF K (AXIAL)
C523 CCZF1H103Z C CERA 50V F 0.01MF Z
C529 CBZF1H104Z C CERA SEMI 50V F 0.1MF Z (AXIAL)
C531 CCZF1H473Z C CERA 50V F 0.047MF Z AXIAL
C534 CCZF1H223Z C CERA 50V F 0.022MF Z
C535 CCZF1H223Z C CERA 50V F 0.022MF Z
LOC.PART CODEPART NAMEPART DESCRIPTION
C536 CCZF1H223Z C CERA 50V F 0.022MF Z
C577 CCZB1H561K C CERA 50V B 560PF K (AXIAL)
C587 CCZB1H101K C CERA 50V B 100PF K (AXIAL)
C588 CCZB1H101K C CERA 50V B 100PF K (AXIAL)
C589 CCZB1H101K C CERA 50V B 100PF K (AXIAL)
C771 CBZF1H104Z C CERA SEMI 50V F 0.1MF Z (AXIAL)
C809 CCZB1H102K C CERA 50V B 1000PF K (AXIAL)
C830 CBZF1H104Z C CERA SEMI 50V F 0.1MF Z (AXIAL)
C850 CCZB1H821K C CERA 50V B 820PF K (AXIAL)
CA01 CCZB1H101K C CERA 50V B 100PF K (AXIAL)
CA02 CCZB1H101K C CERA 50V B 100PF K (AXIAL)
CA03 CCZB1H101K C CERA 50V B 100PF K (AXIAL)
CA10 CCZB1H102K C CERA 50V B 1000PF K (AXIAL)
D101 DBAT85---- DIODE BAT85 (TAPPING)
D151 D1SS85TA-- DIODE 1SS85TA
D313 DBYW36---- DIODE BYW36 (TAPPING)
D341 DUZ33B---- DIODE ZENER UZ-33B
D350 DTZX12C--- DIODE ZENER TZX12C (TAPPING)
D360 DTZX22C--- DIODE ZENER TZX22C (TAPPING)
D361 DUZ33B---- DIODE ZENER UZ-33B
D405 DBYW36---- DIODE BYW36 (TAPPING)
D407 DBYW36---- DIODE BYW36 (TAPPING)
D408 DBYW36---- DIODE BYW36 (TAPPING)
D450 DBYW36---- DIODE BYW36 (TAPPING)
D510 DUZ3R9B--- DIODE ZENER UZ-3.9B
D511 DUZ3R9B--- DIODE ZENER UZ-3.9B
D520 D1N4148--- DIODE 1N4148 (TAPPING)
D521 D1N4148--- DIODE 1N4148 (TAPPING)
D591 DTZX2V4A-- DIODE ZENER TZX2V4A
D710 DTZX5V1B-- DIODE ZENER TZX5V1B (TAPPING)
D801 DBYT51J--- DIODE BYT51J (TAPPING)
D802 DBYT51J--- DIODE BYT51J (TAPPING)
D803 DBYT51J--- DIODE BYT51J (TAPPING)
D804 DBYT51J--- DIODE BYT51J (TAPPING)
D805 DBYW36---- DIODE BYW36 (TAPPING)
D806 DBYW36---- DIODE BYW36 (TAPPING)
D808 DBYW36---- DIODE BYW36 (TAPPING)
D809 DBYW36---- DIODE BYW36 (TAPPING)
D810 DBYW36---- DIODE BYW36 (TAPPING)
D811 DTZX5V6B-- DIODE ZENER TZX5V6B (TAPPING)
D821 DBYW36---- DIODE BYW36 (TAPPING)
D822 DTZX9V1B-- DIODE ZENER TZX9V1B (TAPPING)
D824 D1N4148--- DIODE 1N4148 (TAPPING)
D825 D1N4148--- DIODE 1N4148 (TAPPING)
D830 DBYW36---- DIODE BYW36 (TAPPING)
D831 DBYW36---- DIODE BYW36 (TAPPING)
D840 D1N4148--- DIODE 1N4148 (TAPPING)
D841 D1N4148--- DIODE 1N4148 (TAPPING)
D860 DBYW36---- DIODE BYW36 (TAPPING)
15
Page 18
SERVICE PARTS LIST
LOC.PART CODEPART NAMEPART DESCRIPTION
D904 DBAV21---- DIODE BAV21 (TAPPING)
D905 DBAV21---- DIODE BAV21 (TAPPING)
D906 DBAV21---- DIODE BAV21 (TAPPING)
DA02 DTZX12C--- DIODE ZENER TZX12C (TAPPING)
DA03 DTZX5V1B-- DIODE ZENER TZX5V1B (TAPPING)
DA04 CBZR1C222M C CERA Y5R 16V 2200PF M AXIAL
DA05 DTZX5V6B-- DIODE ZENER TZX5V6B (TAPPING)
DA06 DTZX5V6B-- DIODE ZENER TZX5V6B (TAPPING)
DA08 DTZX5V6B-- DIODE ZENER TZX5V6B (TAPPING)
DA09 DTZX5V6B-- DIODE ZENER TZX5V6B (TAPPING)
DA10 DTZX5V6B-- DIODE ZENER TZX5V6B (TAPPING)
DA11 DTZX5V6B-- DIODE ZENER TZX5V6B (TAPPING)
DA27 DTZX5V6B-- DIODE ZENER TZX5V6B (TAPPING)
JAMP
WIRES
L101 5CPZ100K02 COIL PEAKING 10UH 3.5MM K (LAL02TB)
L301 5CPZ109M04 COIL PEAKING 1UH 10.5MM M (LAL04TB)
L350 5CPZ109M04 COIL PEAKING 1UH 10.5MM M (LAL04TB)
L351 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
L500 5CPZ120K02 COIL PEAKING 12UH 3.5MM K (LAL02TB)
L501 5CPZ100K02 COIL PEAKING 10UH 3.5MM K (LAL02TB)
L502 5CPZ100K02 COIL PEAKING 10UH 3.5MM K (LAL02TB)
L510 5CPZ100K02 COIL PEAKING 10UH 3.5MM K (LAL02TB)
L511 5CPZ100K02 COIL PEAKING 10UH 3.5MM K (LAL02TB)
L512 5CPZ100K02 COIL PEAKING 10UH 3.5MM K (LAL02TB)
L600 5MC0000100 COIL BEAD MD-5 (HC-3550)
L801 5MC0000100 COIL BEAD MD-5 (HC-3550)
L803 5MC0000100 COIL BEAD MD-5 (HC-3550)
R101 RD-AZ473J- R CARBON FILM 1/6 47K OHM J
R102 RD-AZ472J- R CARBON FILM 1/6 4.7K OHM J
R103 RD-AZ123J- R CARBON FILM 1/6 12K OHM J
R104 RD-AZ104J- R CARBON FILM 1/6 100K OHM J
R105 RD-AZ392J- R CARBON FILM 1/6 3.9K OHM J
R106 RD-AZ101J- R CARBON FILM 1/6 100 OHM J
R107 RD-AZ101J- R CARBON FILM 1/6 100 OHM J
R120 RD-AZ101J- R CARBON FILM 1/6 100 OHM J
R153 RD-AZ222J- R CARBON FILM 1/6 2.2K OHM J
R156 RD-AZ163J- R CARBON FILM 1/6 16K OHM J
R157 RD-AZ562J- R CARBON FILM 1/6 5.6K OHM J
R159 RD-AZ222J- R CARBON FILM 1/6 2.2K OHM J
R160 RD-AZ682J- R CARBON FILM 1/6 6.8K OHM J
R161 RD-AZ102J- R CARBON FILM 1/6 1K OHM J
R162 RD-AZ473J- R CARBON FILM 1/6 47K OHM J
R163 RD-AZ103J- R CARBON FILM 1/6 10K OHM J
R164 RD-AZ101J- R CARBON FILM 1/6 100 OHM J
R170 RD-AZ133J- R CARBON FILM 1/6 13K OHM J
R302 RD-2Z159J- R CARBON FILM 1/2 1.5 OHM J
R310 RD-AZ102J- R CARBON FILM 1/6 1K OHM J
R311 RD-AZ102J- R CARBON FILM 1/6 1K OHM J
85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
LOC.PART CODEPART NAMEPART DESCRIPTION
R340 RD-4Z473J- R CARBON FILM 1/4 47K OHM J
R341 RD-2Z332J- R CARBON FILM 1/2 3.3K OHM J
R350 RN-4Z2001F R METAL FILM 1/4 2.0K OHM F
R351 RN-4Z2001F R METAL FILM 1/4 2.0K OHM F
R355 RD-AZ272J- R CARBON FILM 1/6 2.7K OHM J
R356 RD-4Z562J- R CARBON FILM 1/4 5.6K OHM J
R360 RD-4Z564J- R CARBON FILM 1/4 560K OHM J
R390 RD-4Z159J- R CARBON FILM 1/4 1.5 OHM J
R401 RD-4Z272J- R CARBON FILM 1/4 2.7K OHM J
R404 RD-4Z399J- R CARBON FILM 1/4 3.9 OHM J
R420 RD-AZ223J- R CARBON FILM 1/6 22K OHM J
R501 RD-AZ101J- R CARBON FILM 1/6 100 OHM J
R502 RD-AZ101J- R CARBON FILM 1/6 100 OHM J
R505 RD-AZ101J- R CARBON FILM 1/6 100 OHM J
R506 RD-AZ332J- R CARBON FILM 1/6 3.3K OHM J
R507 RD-AZ101J- R CARBON FILM 1/6 100 OHM J
R508 RD-AZ332J- R CARBON FILM 1/6 3.3K OHM J
R509 RD-AZ681J- R CARBON FILM 1/6 680 OHM J
R511 RD-AZ333J- R CARBON FILM 1/6 33K OHM J
R512 RD-AZ101J- R CARBON FILM 1/6 100 OHM J
R513 RD-AZ101J- R CARBON FILM 1/6 100 OHM J
R514 RD-AZ101J- R CARBON FILM 1/6 100 OHM J
R515 RD-AZ153J- R CARBON FILM 1/6 15K OHM J
R516 RD-AZ393J- R CARBON FILM 1/6 39K OHM J
R517 RD-AZ102J- R CARBON FILM 1/6 1K OHM J
R518 RD-AZ273J- R CARBON FILM 1/6 27K OHM J
R520 RD-AZ183J- R CARBON FILM 1/6 18K OHM J
R521 RD-AZ391J- R CARBON FILM 1/6 390 OHM J
R522 RD-AZ221J- R CARBON FILM 1/6 220 OHM J
R523 RD-AZ331J- R CARBON FILM 1/6 330 OHM J
R524 RD-AZ561J- R CARBON FILM 1/6 560 OHM J
R525 RD-AZ104J- R CARBON FILM 1/6 100K OHM J
R526 RD-4Z479J- R CARBON FILM 1/4 4.7 OHM J
R527 RD-AZ431J- R CARBON FILM 1/6 430 OHM J
R528 RD-AZ221J- R CARBON FILM 1/6 220 OHM J
R530 RD-AZ470J- R CARBON FILM 1/6 47 OHM J
R531 RD-AZ102J- R CARBON FILM 1/6 1K OHM J
R533 RD-AZ103J- R CARBON FILM 1/6 10K OHM J
R534 RD-AZ102J- R CARBON FILM 1/6 1K OHM J
R535 RD-AZ101J- R CARBON FILM 1/6 100 OHM J
R537 RD-AZ101J- R CARBON FILM 1/6 100 OHM J
R538 RD-AZ101J- R CARBON FILM 1/6 100 OHM J
R539 RD-AZ101J- R CARBON FILM 1/6 100 OHM J
R555 RD-AZ103J- R CARBON FILM 1/6 10K OHM J
R556 RD-AZ682J- R CARBON FILM 1/6 6.8K OHM J
R567 RD-AZ101J- R CARBON FILM 1/6 100 OHM J
R570 RD-4Z102J- R CARBON FILM 1/4 1K OHM J
R571 RD-AZ432J- R CARBON FILM 1/6 4.3K OHM J
R572 RD-AZ122J- R CARBON FILM 1/6 1.2K OHM J
16
Page 19
SERVICE PARTS LIST
LOC.PART CODEPART NAMEPART DESCRIPTION
R573 RD-AZ272J- R CARBON FILM 1/6 2.7K OHM J
R575 RD-AZ102J- R CARBON FILM 1/6 1K OHM J
R580 RD-AZ561J- R CARBON FILM 1/6 560 OHM J
R585 RD-AZ224J- R CARBON FILM 1/6 220K OHM J
R586 RD-AZ221J- R CARBON FILM 1/6 220 OHM J
R587 RD-AZ101J- R CARBON FILM 1/6 100 OHM J
R588 RD-AZ101J- R CARBON FILM 1/6 100 OHM J
R589 RD-AZ101J- R CARBON FILM 1/6 100 OHM J
R591 RD-AZ221J- R CARBON FILM 1/6 220 OHM J
R592 RD-AZ103J- R CARBON FILM 1/6 10K OHM J
R593 RD-AZ103J- R CARBON FILM 1/6 10K OHM J
R594 RD-AZ103J- R CARBON FILM 1/6 10K OHM J
R595 RD-AZ473J- R CARBON FILM 1/6 47K OHM J
R596 RD-AZ302J- R CARBON FILM 1/6 3K OHM J
R597 RD-AZ153J- R CARBON FILM 1/6 15K OHM J
R598 RD-AZ153J- R CARBON FILM 1/6 15K OHM J
R599 RD-AZ221J- R CARBON FILM 1/6 220 OHM J
R601 RD-4Z432J- R CARBON FILM 1/4 4.3K OHM J
R602 RD-AZ152J- R CARBON FILM 1/6 1.5K OHM J
R610 RD-AZ332J- R CARBON FILM 1/6 3.3K OHM J
R710 RD-AZ431J- R CARBON FILM 1/6 430 OHM J
R711 RD-AZ431J- R CARBON FILM 1/6 430 OHM J
R713 RD-AZ681J- R CARBON FILM 1/6 680 OHM J
R720 RD-AZ122J- R CARBON FILM 1/6 1.2K OHM J
R721 RD-AZ181J- R CARBON FILM 1/6 180 OHM J
R722 RD-AZ221J- R CARBON FILM 1/6 220 OHM J
R723 RD-AZ331J- R CARBON FILM 1/6 330 OHM J
R724 RD-AZ471J- R CARBON FILM 1/6 470 OHM J
R805 RD-2Z100J- R CARBON FILM 1/2 10 OHM J
R806 RD-4Z472J- R CARBON FILM 1/4 4.7K OHM J
R807 RD-2Z272J- R CARBON FILM 1/2 2.7K OHM J
R810 RD-4Z102J- R CARBON FILM 1/4 1K OHM J
R811 RC-2Z565KP R CARBON COMP 1/2 5.6M OHM K
R817 RD-AZ473J- R CARBON FILM 1/6 47K OHM J
R820 RD-AZ102J- R CARBON FILM 1/6 1K OHM J
R821 RD-4Z102J- R CARBON FILM 1/4 1K OHM J
R823 RD-4Z302J- R CARBON FILM 1/4 3K OHM J
R829 RD-AZ223J- R CARBON FILM 1/6 22K OHM J
R830 RD-AZ332J- R CARBON FILM 1/6 3.3K OHM J
R840 RD-4Z220J- R CARBON FILM 1/4 22 OHM J
R841 RD-2Z479J- R CARBON FILM 1/2 4.7 OHM J
R850 RD-2Z479J- R CARBON FILM 1/2 4.7 OHM J
R855 RD-4Z185J- R CARBON FILM 1/4 1.8M OHM J
R870 RD-4Z222J- R CARBON FILM 1/4 2.2K OHM J
R888 RD-AZ103J- R CARBON FILM 1/6 10K OHM J
R910 RD-AZ101J- R CARBON FILM 1/6 100 OHM J
R911 RD-AZ101J- R CARBON FILM 1/6 100 OHM J
R912 RD-AZ101J- R CARBON FILM 1/6 100 OHM J
R913 RC-2Z102K- R CARBON COMP 1/2 1K OHM K
LOC.PART CODEPART NAMEPART DESCRIPTION
R914 RC-2Z102K- R CARBON COMP 1/2 1K OHM K
R915 RC-2Z102K- R CARBON COMP 1/2 1K OHM K
R921 RD-AZ102J- R CARBON FILM 1/6 1K OHM J
R922 RD-AZ102J- R CARBON FILM 1/6 1K OHM J
R923 RD-AZ102J- R CARBON FILM 1/6 1K OHM J
RA01 RD-AZ680J- R CARBON FILM 1/6 68 OHM J
RA02 RD-AZ101J- R CARBON FILM 1/6 100 OHM J
RA03 RD-AZ101J- R CARBON FILM 1/6 100 OHM J
RA04 RD-AZ101J- R CARBON FILM 1/6 100 OHM J
RA05 RD-AZ103J- R CARBON FILM 1/6 10K OHM J
RA06 RD-AZ750J- R CARBON FILM 1/6 75 OHM J
RA08 RD-AZ750J- R CARBON FILM 1/6 75 OHM J
RA09 RD-AZ750J- R CARBON FILM 1/6 75 OHM J
RA10 RD-AZ101J- R CARBON FILM 1/6 100 OHM J
RA11 RD-AZ183J- R CARBON FILM 1/6 18K OHM J
RA12 RD-AZ183J- R CARBON FILM 1/6 18K OHM J
RA16 RD-AZ680J- R CARBON FILM 1/6 68 OHM J
RA19 RD-AZ750J- R CARBON FILM 1/6 75 OHM J
RA20 RD-AZ473J- R CARBON FILM 1/6 47K OHM J
RA30 RD-AZ183J- R CARBON FILM 1/6 18K OHM J
RA44 RD-AZ682J- R CARBON FILM 1/6 6.8K OHM J
1W 2 JA (F)1W 0.47 JA (F) 1W 1 JA (F)1W 0.18 JA (F)
RD-4Z302J-85801065GYRD-4Z512J-85801065GY
R823
R920
THE DIFFERENT PARTS FOR SYSTEM (CP-185)
LOC.NAMETATFTKTU
SF01 SAW FILTERG1984MG1984MK2960MJ1981M
SFO2 SAW FILTERL9653MXXX
PWC1 POWER CORD AS CW4232CW4232KKP419CCW3222
Z502 CERA FILTERTPS6.5MBXXX
Z501 CERA FILTERTPS5.5MBTPS5.5MBTPS5.5MB TPS6.0MB
I101 IC IFTDA9830XXX
C801 C LINE ACROSSAC 250V 0.47u
R153 R.C.-FILM2.2KXXX
R157 R.C.-FILM5.6KXXX
R156 R.C.-FILM16KXXX
R160 R.C.-FILM6.8KXXX
R159 R.C.-FILM2.2KXXX
18
R162 R.C.-FILM47KXXX
R161 R.C.-FILM1KXXX
R164 R.C.-FILM100XXX
R163 R.C.-FILM10KXXX
Q154 TRKTC3198XXX
Q152 TRKTC3198XXX
D151 DIODE1SS85TAXXX
Q155 TRKTC3198XXX
C152 C. ELECTRO50V 2.2uFXXX
C150 C. CERA0.01uXXX
C154 C. ELECTRO16V 4.7uXXX
C153 C. CERA0.1uXXX
C156 C. ELECTRO16V 4.7uXXX
C155 C. ELECTRO16V 4.7uXXX
Page 21
DAEWOO ELECTRONICS CO., LTD
686, AHYEON-DONG MAPO-GU
SEOUL, KOREA
C.P.O. BOX 8003 SEOUL, KOREA
TELEX : DWELEC K28177-8
CABLE : “DAEWOOELEC”
E-mail : leesk@web.dwe.co.kr
TEL : 82-2-360-7802
FAX : 82-2-360-7877
Page 22
APPENDIX
ALIGNMENT INSTRUCTIONS
FUNCTIONAL DESCRIPTION OF VIDEO PROCESSOR Vision IF amplifier
The vision IF amplifier can demodulate signals with positive and negative modulation. The PLL demodulator is completely
alignment-free.
The VCO of the PLL circuit is internal and the frequency is fixed to the required value by using the clock frequency of the
µ
-Controller/Teletext decoder as a reference. The setting of the various frequencies is made by the controlling software in
subaddress 27H (33.9 MHz for system L’ and 38.9 MHz for all other systems). Because of the internal VCO, the IF circuit
has a high immunity to EMC interference.
1. IF demodulator and audio amplifier
The FM demodulator is realised as a narrow band PLL with external loop filter, which provides the necessary selectivity
without using an extra band pass filter. To obtain good selectivity a linear phase detector and a constant input signal amplitude are required. For this reason the intercarrier signal is internally supplied to the demodulator via a gain controlled
amplifier and AGC circuit. The nominal frequency of the demodulator is set via a gain controlled amplifier and AGC circuit.
The nominal frequency of the demodulator is tuned to the required frequency (5.5 / 6.0 / 6.5 MHz) by means of a calibration circuit which uses the clock frequency of the microcontroller as a reference. Selection of the required frequency is
done by the controlling software.
Video switches
The video switch has one input for an external CVBS or Y/C signal. The selected CVBS signal can be supplied to pin 38,
the IF video output. The selection between both signals is realised by the controlling software in subaddress 22H.
The video ident circuit is connected to the selected signal. This ident circuit is independent of the synchronisation.
Synchronisation circuit
The IC contains separator circuits for the horizontal and vertical sync pulses and a data-slicing circuit which extracts the
digital teletext data from the analogue signal.
The horizontal drive signal is obtained from an internal VCO which is running at a frequency of 25 MHz. This oscillator is
stabilised to this frequency by using a 12 MHz signal coming from the reference oscillator of the
decoder.
The horizontal drive is switched on and off via the soft start/stop procedure. This function is realised by means of variation
of the TON of the horizontal drive pulses.
µ
-Controller/Teletext
1
Page 23
APPENDIX
ALIGNMENT INSTRUCTIONS
The vertical synchronisation is realised by means of a divider circuit. The vertical ramp generator needs an external resistor
and capacitor. For the vertical drive a differential output current is available. The outputs are DC coupled to the vertical output
stage.
The following geometry parameters can be adjusted:
•
Horizontal shift
•
Vertical amplitude
•
Vertical slope
•
S-correction
•
Vertical shift
Chroma and luminance processing
The chroma band-pass and trap circuits (including the SECAM cloche filter) are realised by means of gyrators and are tuned to
the right frequency by comparing the tuning frequency with the reference frequency of the colour decoder. The luminance delay
line and the delay cells for the peaking circuit are also realised with gyrators. The circuit contains a black stretcher function
which corrects the black level for incoming signals which have a difference between the black level and the blanking level.
Colour decoder
The ICs can decode PAL, NTSC and SECAM signals. The PAL/NTSC decoder does not need external reference crystals but
has an internal clock generator which is stabilised to the required frequency by using the 12 MHz clock signal from the reference
oscillator of the µ-Controller/Teletext decoder.
The Automatic Colour Limiting (ACL) circuit (switchable via the ACL bit in subaddress 2OH) prevents oversaturation occurring
when signals with a high chroma-to-burst ratio are received. The ACL circuit is designed such that it only reduces the chroma
signal and not the burst signal. This has the advantage that the colour sensitivity is not affected by this function.
SOFTWARE CONTROL
The CPU communicates with the peripheral functions using Special function Registers (SFRS) which are addressed as RAM
locations. The registers for the Teletext decoder appear as normal SFRs in the
these functions by using a serial bus. This bus is controlled by dedicated hardware which uses a simple handshake system for
software synchronisation.
For compatibility reasons and possible re-use of software blocks, the TV processor is controlled by I2C bus. The TV processor
control registers cannot be read. Only the status registers can be read ( Read address 8A ).
The SECAM decoder contains an auto-calibrating PLL demodulator which has two references, via the divided 12 MHz reference frequency (obtained from the µ-Controller) which is used to tune the PLL to the desired free-running frequency and the
bandgap reference to obtain the correct absolute value of the output signal. The VCO of the PLL is calibrated during each vertical blanking period, when the IC is in search or SECAM mode.
µ
-Controller memory map and are written to
The base-band delay line (TDA 4665 function) is integrated. This delay line is also active during NTSC reception, to obtain a
good suppression of cross colour effects. The demodulated colour difference signals are internally supplied to the delay line.
2
Page 24
APPENDIX
ALIGNMENT INSTRUCTIONS
RGB output circuit and black-current stabilisation
In the RGB control circuit the signal is controlled on contrast, brightness and saturation. The ICs have a linear input for external
RGB signals. The signals for OSD and text are internally supplied to the control circuit. The output signal has an amplitude of
about 2 Volts black-to-white at nominal input signals and nominal settings of the various controls.
To obtain an accurate biasing of the picture tube the 'Continuous Cathode Calibration’ system has been included in these ICs.
A black level off set can be made with respect to the level which is generated by the black current stabilisation system. In this
way different colour temperatures can be obtained for the bright and the dark part of the picture.
The black current stabilisation system checks the output level of the 3 channels and indicates whether the black level of the
highest output is in a certain window or below or above this window. This indication is read from the status byte 01 and is used
for automatic adjustment of the Vg2 voltage during the production of the TV receiver.
During switch-off of the TV receiver a fixed beam current is generated by the black current control circuit. This current ensures
that the picture tube capacitance is discharged. During the switch-off period the vertical deflection is placed in an overscan
position so that the discharge is not visible on the screen.
2. IF
The TDA9361/TDA9381 has an alignment free IF PLL demodulator. The fully integrated oscillator is automatically calibrated,
using the 12 MHz crystal as a frequency reference. The IF frequency is simply set in TV-Processor by I2C bus.
The AFC information is available via I2C bus from the TV-Processor status bytes. The controlling software uses this information
for tuner frequency tracking ( automatic following ). The AFC window is typically 125Khz wide. The minimum frequency step of
the tuner is 62.5 kHz.
This AFC function is disabled when a program is tuned using the direct frequency entry or after fine tuning adjustment. Therefore it is recommended to tune a channel with the TV search function ( manual or ATSS ) or by using the direct channel entry to
enable the Automatic Frequency Control.
SAW filters
TFTKTUTA
SF01G1984MK2960MJ1981MG1984M
SF02---L9653M
Ref.StandardFeatures
- IF filter for Intercarrier Applications
- TV IF filter with Nyquist slope and sound shelf.
G1984MB/G
K2960MB/G - D/K
J1981MI
L9653ML / L’ - Switchable sound filter
- High colour carrier level
- Reduced group delay predistortion as compared with standard B/G,
half
- IF filter for Intercarrier Applications
- TV IF filter with Nyquist slope and sound shelf.
- IF filter for Intercarrier Applications
- TV IF filter with Nyquist slope and sound shelf.
- High colour carrier level
- Constant group delay
3
Page 25
APPENDIX
ALIGNMENT INSTRUCTIONS
For SECAM L and L’ the TDA9361/TDA9381 is switched to positive modulation via I2C bus. SECAM L’ transmission only occur
in VHF band I and have their picture and sound carrier interchanged, compared to SECAM L and PAL B/G channels. For
SECAM L’ the picture carrier is situated at 33.9 MHz and the AM sound carrier at 40.40 MHz. The IF PLL reference is tuned
from 38.9 to 33.9 MHz, this is done via I2C Bus and the SIF filter is switched from channel 2 to channel 1; this is done by pin 4
of TDA 9361.
The tuner AGC time constant is slower for positive than for negative modulation, because the TDA9361 reduces its AGC current. To make the AGC time constant even slower an extra series resistor R103 is added. To prevent IF overload when jumping
from a very strong transmitter to a weak transmitter a diode D101 has been added
************************************************************************************************************************************************
The SAW filter ( SF1 ) has a double Nyquist slope at 38.9 MHz and 33.9 MHz needed for this multistandard application.
The disadvantage of this choice is that a 5.5 MHz trap filter ( Z501 ) is needed to suppress the residual sound carrier in the
video for B/G signals.
************************************************************************************************************************************************
3. Source switching
Video :
The TDA9361/TDA9381 has only one external video input. The SCART video in pin (#20) is connected to the front RCA video
input.
The controlling software via I2C bus selects the signal source :
- Video signal from tuner ( Pin 40 ).
- External video.
- External SVHS from SCART.
The sound source switching is done in the video processor part and in the AM demodulator by the
µ
-Controller via I2C
bus.
The video processor pin 28 has multiple functions and provides in this application
- Deemphasis time constant
- Audio monitor output
- External AM input
- Deemphasis time constant : The time constant is given by the capacitor C504, needed to obtain the 54
µ
s time constant
for standard PAL signal.
- Audio monitor output : the nominal output signal is 500 mVrms, for all standards. The signal is also internally connected
through to the audio switch. This signal is not controlled by the volume setting and can be used for SCART audio output.
The signal is buffered to avoid influencing the deemphasis time constant and to adjust the output level.
- External AM input : By software the deemphasis pin can be converted into an input pin. External AM signal for SECAM
L/L’ is directly connected to this pin. In this configuration the FM sound is internally muted, DC level remains at 3Vdc.
An external sound signal of 500mVrms is applied to pin 35 via a coupling capacitor. The input impedance of this pin is
25KΩ typical. Switching between internal FM, external AM or external audio from SCART is controlled internally by software.
4
Page 26
APPENDIX
ALIGNMENT INSTRUCTIONS
Fast R, G, B insertion : The external R, G, B insertion needs a fast switching and cannot be controlled by the software (
instruction cycle of 1µ sec ). The fast switching pin 16 of SCART is directly connected to the TV processor pin 45 ( Fast
blanking input ). The display is synchronised with the selected video source, i.e. to get stable R, G, B signal insertion they
must be synchronised with the selected video source.
4. µ-Controller I/O pin configuration and function
The I/O pins of the µ-Controller can be configured in many ways. All port functions can be individually programmed by the controlling software.
Each I/O port pin can be individually programmed in these configurations :
Open drain
In this mode, the port can function as input and output. It requires an external pull-up resistor. The maximum allowable supply
voltage for this pull up resistor is +5V.
So in this mode it is possible to interface a 5 Volt environment like I2C while the
µ
-Controller has a 3.3 Volt supply.
Push-Pull
The push pull mode can be used for output only. Both sinking and sourcing is active, which leads to steep slopes. The levels are
0 and Vddp, the supply voltage 3.3Volts.
High impedance
This mode can be used for input only operation of the port.
Special port for LED
Pin 10 and 11 have the same functionality as the general I/O pins but in addition, their current source and sink capacity is 8 mA
instead of 4 mA. These pins are used for driving LED’s via a series current limiting resistor.
µ
-Controller I/O pin configuration and function table
pinname
1n.u.High impedanceHigh impedancenot used
2SCLOpen DrainOpen DrainSerial clock line
3SDAOpen DrainOpen DrainSerial data line
SIF filter switching + AM/FM
switching
Over Current Protection (
Switch the set OFF if the voltage on this pin is <2.3V )
Used during ATSS to measure
RF signal level.
5
Page 27
APPENDIX
ALIGNMENT INSTRUCTIONS
5. SECAM L/L’ sound switching circuit.
The microcontroller pin 4 is a three levels output. The voltage and configuration of this port is described below :
Sound modePort configurationVoltage
FMPush PullInternally shorted to ground
AM LPush PullPull up to 3.3V
AM L’High ImpedanceFixed by R511, R156, R157
In FM mode the microcontroller is internally grounded to pin 4. The TDA9830 output is muted
6. Sound amplification
The device TDA7267A is a mono audio amplifier in powerDIP package specially designed for TV application. Thanks to the fully
complementary output configuration the device delivers a rail to rail voltage swing without need of bootstrap capacitors. No
external heat sink is needed as the Cu ground plane of the PCB is used as heat dissipation.
7. Vertical deflection
The vertical driver circuit is a bridge configuration. The deflection coil is connected between the output amplifiers, which are
driven in phase opposition. The differential input circuit is voltage driven. The input circuit is especially intended for direct connection to driver circuits which deliver symmetrical current signals, but is also suitable for asymmetrical currents. The output
current of these devices is converted to voltages at the input pins via resistors R350 and R351. The differential input voltage is
compared with the output current through the deflection coils measured as voltage across R302, which provides internal feedback information. The voltage across R302 is proportional to the output current.
Flyback voltage
The flyback voltage is determined by an additional supply voltage V
G) makes it possible to fix the supply voltage Vp optimum for the scan voltage and the second supply voltage V
the flyback voltage. Using this method, very high efficiency is achieved. The supply voltage V
back voltage across the coil, this being possible due to the absence of a coupling capacitor.
Protection
The output circuit has protection circuits for :
- Too high die temperature
- overvoltage of output stage A
Guard circuit
The guard signal is not used by the TDA9361/ TDA9381 to blank the screen in case of a fault condition.
Damping resistor
For HF loop stability a damping resistor (R305) is connected across the deflection coil.
. The principle of operation with two supply voltages (class
fb
is almost totally available as fly-
fb
optimum for
fb
6
Page 28
APPENDIX
ALIGNMENT INSTRUCTIONS
8. Power supply (STR F6653)
8-1. STR-F6653 general description
The STR-F6653 is an hybrid IC with a build-in MOSFET and control IC, designed for flyback converter type switch mode power
supply applications.
8-2. Power supply primary part operations
An oscillator generates pulse signals which turn on and off a MOSFET transistor.
8-2-1. Start -up circuit: V
IN
The start-up circuit is used to start and stop the operation of the control IC, by detecting a voltage appearing at the V
T801 SMPS TRANS
4
C805
2
Ground
L801
3
DrainVin
I801 STR-F6653
5
D801
R819
D802
Main AC voltage
When the power switch is pushed on, VIN increases slowly. During this time, C806 is charged through R802.
C804
C803
D804
D803
R802
C806
7
6
R805
D805
4
pin (pin 4).
IN
As soon as VIN reaches 16V, the STR-F6653 control circuit starts operating. Then, V
is obtained by smoothing the winding volt-
IN
age which appears between pin 6 and pin 7 of the SMPS transformer.
As this winding voltage does not increase to the set voltage immediately after the control circuit starts operating, V
ping. However, as this winding voltage reaches the set value before V
voltage drops to the shutdown voltage (at 11V), the con-
IN
trol circuit continues operating (see below, VIN voltage at start-up). Resistor R805 prevents variations of voltage at the V
some regulation of the SMPS transformer occurs due to secondary side output current
VIN must be set higher than the shutdown voltage (VIN (off) = 11V
ing voltage (V
OVP
= 20.5V
min
).
) and lower than the O.V.P. (overvoltage protection) operat-
max
7
starts drop-
IN
pin, as
IN
Page 29
APPENDIX
ALIGNMENT INSTRUCTIONS
Vin
O.V.P.volt age 20.5V
16V (TYP.)
Shutdown voltage 11V
t
Waveform of Vin pin voltage at start-up
8-2-1. STR-F6653 oscillating operation
STR-F6653
OSC
Comp.2
C1
R1
Vth(2)
Comp.1
DRIVE
Vth(1)
1.35mA
Oscillating operation
Rg2
Rg1
3
DRAIN
2
SOURCE
1
OCP/FB
5
GND
TO PIN4 SM PS
R808
From PIN 6
SM
PS
(FEEDBACK)
C850
R804
8
Page 30
APPENDIX
ALIGNMENT INSTRUCTIONS
1
C1
(STR-F6653
internal capacitor)
Pin 1
(OCP / FB)
I
D
(M OSFET drain current)
V
DS
(M OSFET drain - source voltage)
M OS F E T switching ON / OFF
6.5V
3.7V
2
0.73V
0V
ON
ONON
Waveforms during oscillating operation
3
OFFOFF
4
OFF
- When the MOSFET is ON, the STR-F6653 internal capacitor C1 is charged at the constant voltage 6.5V.
At the same time, the voltage at pin 1 (OCP / FB) increases with the same waveform as the MOSFET drain current.
- When the pin 1 voltage reaches the threshold voltage V
The STR-F6653 internal oscillator is inverted and the MOSFET turns OFF.
- When the MOSFET turns OFF, charging of STR-F6653 internal capacitor C1 is released and C1 starts discharging by the
STR-F6653 internal resistance R1. So, C1 voltage starts falling in accordance to the gradient regulated by the constant discharging time of C1 and R1. So, this means that the fixed time determined by C1 and R1 is the OFF-time of the MOSFET.
- When C1 voltage falls to around 3.7V, the STR-F6653 internal oscillator is reversed again and the MOSFET turns ON. C1 is
quickly charged to around 6.5V
The MOSFET continues to oscillate by repeating the above procedure.
= 0.73V, the STR-F6653 internal comparator 1 starts operating.
TH1
9
Page 31
APPENDIX
ALIGNMENT INSTRUCTIONS
8-2-3. STR-F6653 protection circuits
overcurrent protection function (OCP)
Overcurrent protection is performed pulse by pulse detecting at STR-F6653 pin 1 (OCP) the peak of the MOSFET drain current
in every pulse.
latch circuit
This circuit sustains an output low from the STR-F6653 internal oscillator and stops operation of the power supply when overvoltage protection (OVP) and thermal shutdown (TSD) circuit are in operation
thermal shutdown circuit (TSD)
This circuit triggers the latch circuit when the frame temperature of STR-F6653 IC exceeds 140
overvoltage protection circuit (OVP)
This circuit triggers the latch circuit when the V
voltage exceeds 22V (typ.)
in
°
C
9. TV start-up, TV normal run and stand by mode operations
9-1. TV start-up operations
9-1-1. Schematic diagram for start-up operations
I823 REG 3.3V
D801... D804
(GRAETZ BRIDGE)
SW801
POWER SWITCH
IN
12
8V
T801 SMPS TRANSFORMER
2
D
I801 MOSFET AND
CONTROL IC
GND
1
4
L801
3
OUT
23
L511
L510
5661
Vddc
Vddp
I501
MICROCONTROLLER PART
SDA
SCL
2
I702
EEPROM
3
56
VddA
IN
L512
RESET
PULSE
CIRCUIT
OUT
6054
Reset N
63
Power
10
Page 32
APPENDIX
ALIGNMENT INSTRUCTIONS
9-1-2. TV start-up and microcontroller initialisation
- When SW801 power switch is pushed, main AC voltage is applied to T801 transformer (after rectification by D801...D804
diodes). Then, T801 SMPS transformer starts operating and supplies DC voltage to I823 (3.3V regulator).
- This regulator provides 3.3V DC voltage to I501 microcontroller power supply pins (pins 54, 56, 61) and to the reset pulse circuit which provides reset pulse to I501 microcontroller reset pin (pin 60).
- Then, the microcontroller starts its initialisation. Its power pin (pin 63) is set to high which allows delivery of power supply voltages (110/123V, 8V, 5V...). At this step, all IC’s start working but no picture appears on screen: I501 IC doesn’t provide horizontal drive voltage.
- Then, the microcontroller consults I702 EEPROM via I2C bus to know the last TV set mode (normal run mode or stand-by
mode ) before switching off.
.
If the TV set was on normal run mode before switching off, the microcontroller delivers horizontal drive voltage at pin 33 and
picture appears on screen.
.
If the TV set was on stand-by mode before switching off, the microcontroller switches TV set to stand-by mode, decreasing
power pin voltage (pin 63). This matter will be explained in paragraph 2.2.
9-1-3 Reset pulse circuit:
from I823
pin 3
DC supply voltage
I823 pin 3
R591
220 W
D591
DZ2.4
0V
R592
10k
Q510
W
1.2V
R594
10K W
R593
10K W
3.0V
Q511
+
C501
50V
10 mF
to I501
pin 60
3.3V
3.0V
1.2V
reset pulse
I501 pin 60
V
0
Reset pulse circuit and corresponding waveforms
11
Page 33
APPENDIX
ALIGNMENT INSTRUCTIONS
9-1-4. Reset pulse circuit operations description
- When DC supply voltage from I823 regulator starts rising (from 0V to 1.2V), no current flows through D591 zener diode. So,
Q510 is in off mode.
Also V
Then, no voltage reaches I501 pin 60.
- When this voltage reaches 1.2 V, Q510 stays in off mode
but V
be Q511
- When the DC supply voltage reaches (2.4V +0.6V ) =3.0V, Q510 starts conducting but as the Q511 base-emitter voltage is the
same as the collector-emitter voltage of the saturated Q510, Q511 switches off and no voltage reaches I501 pin 60.
- If the DC supply voltage decreases below 3 V, Q510 switches off immediately. Q511 starts conducting, pulling I501 pin 60
high. At the same time, it discharges the reset capacitor C501. Discharging this capacitor is necessary to guarantee a defined
reset pulse duration.
=Vcc/2 -Vcc = -Vcc/2 > -0.6V. So, Q511 is in off mode.
be Q511
= -0.6V. So, Q511 is switched on and starts driving DC supply voltage to I501 pin 60.
9-2. TV normal run and stand-by mode operations
Depending on remote control commands, I501 microcontroller part pin 63 (power) is set to:
- high for normal run mode
- low for stand-by mode
9-2-1. TV on normal run mode
9-2-1-1. I501 microcontroller part pin 63 (power) effect
I501 microcontroller part pin 63 (power) is connected to the following circuit:
I810
CONTROLLED
RECTIFIER
LOW
R820
LOW
CONDUCTING
C830
R830
Q807
HIGH
6V DC
Q808
R829
LOW
Q809
LOW
NOT
CONDUCT
11V DC
R870
D811
Q811
HIGH
Q810
ING
POWER
HIGH
I501 microcontroller part pin 63 (POWER) effect
12
Page 34
ALIGNMENT INSTRUCTIONS
In normal run mode, I501 microcontroller pin 63 (power) is set to high
So, I810 controlled rectifier is not conducting
- Q809 is conducting. So, Q808 is not conducting and Q807 is conducting
- So, Q807 collector is connected to the ground and I810 controlled rectifier gate pin is set to low (no conducting)
So, current from 11V DC voltage (from T801 SMPS transformer pin 13) does not flow through Q811 and Q810
transistors but flows through I806 IC error amplifier
- Q809 is conducting. So, Q810 is not conducting and no current flows from Q810 collector to the ground
Therefore, the power circuit diagram is the following one:
9-2-1-2. power supply circuit diagram during TV set normal run
APPENDIX
14.5V (CP785)
12.5V (CP385)
C861
D801... D804
(GRAETZ BRIDGE )
SW 801
POWER
SW ITCH
5V
3
I820
5V
REGULATOR
1
D860
D830
9
14.5V
12.5V
T801 SMPS TRANSFORMER
2
12
8.5V
8V
4
3
D
I801
MOSFET AND
CONTROL IC
L801
C832
D831
13
11.5V
11V
C823
D820
16
143V
123V / 113V
3.3V
3
I823
3.3V
REGULATOR
1
1
C813
R823
1
I806
IC ERROR AMPLIFIER
2
R810
11V
I822
V
8
REGULATOR
3
11V
143V (CP785)
123V-113V (CP385)
6V
3
8V
MAIN AC VOLTAGE
Power supply operation during TV set normal run
13
Page 35
APPENDIX
ALIGNMENT INSTRUCTIONS
9-2-1-3. power supply functioning during TV set normal run mode
- I801 transmits controlled pulses to T801 which generates DC voltages after rectification by secondary side diodes and electrolytic
capacitors (for example by D820 and C813 to give 124V -110V supply voltage line).
- 8V, 5V, 3.3V supply voltage lines have stabilised voltages obtained by I822, I820, I823 voltage regulators.
- On 124V-110V supply voltage line, R823 resistor has been chosen to give the exact DC voltage required on this line.
- 124V-110V supply voltage line includes an IC error amplifier (I806) which corrects unexpected DC voltage variations on this line.
9-2-1-4. power supply IC delivery during TV set normal run
power supply line IC power supply deliveryRemarks
FBT supplies 45V to I301 vertical IC
FBT supplies 14V to I301 vertical IC
124V-110V
FBT
13.5V I601 pin 1
11VT401 H- drive
8VI501 Main IC pins 14-39
6VI703 IR receiver pin 1
5VI702 EEPROM pin 8
tuner
3.3VMain IC µcom part pins 54-56-61
FBT supplies 33V to the tuner
FBT supplies 185V to I901 video amplifier pin 6
9-2-2. TV set in stand-by mode
9-2-2-1. TV set circuit diagram in stand-by mode
D801...D804
GRAETZ BRIDGE
SW801
PO WER SWITCH
MAIN AC VOLTAGE
24
I801
MOF SET AND
CONTROL IC
T801 SMPS TRAN
L801
3
DRAIN
OCP
FB
S
8
D806
R806
1
C850
I810
controlled rectifier
D821
16
D825
C808
4
I804
3
OPTO
COUPLER
CONDUCTING
CONDUCTING
CONDUCTING
HIGH
R810
I810
CONTROLLED
RECTIFIER
SWITCHING
CIRCUIT
1
R870
D811
2
Q811
Q810
C840
C841
AROUND
6V dc
IR IN
I501
mcom
MAIN
supply
voltage
IC
KEY IN
POWER
63
HIGH
Q809
LOW
LOW
AROUND
3.3Vdc
I703 IR
64
2
RECEIVER
61
56
54
FRONT
7
MASK
BUTTONS
R888
C888
Power supply operation in stand - by mode
I823 3.3V
1
REGULATOR
3
R713
1
14
Page 36
I810
CONTROLLED
RECTIFIER
HIGH
R830
APPENDIX
ALIGNMENT INSTRUCTIONS
6V DC
R829
R820
C830
HIGH
Q807
LOW
Q808
HIGH
Q809
POWER
LOW
I810 controlled rectifier switching circuit
9-2-2-2. TV set stand-by mode operations
-In stand-by mode, I501 microcontroller pin 63 (power) is set to low.
- So, Q809 collector is set to high.
-Then, I810 controlled rectifier gate pin is set to high and I810 is conducting.
- So, current flows from pin 16 SMPS transformer to the ground via I804 optocoupler and Q810 and Q811 transistors
(which are conducting).
- In these conditions, I801 delivers pulses on light mode and T801 produces voltages with reduced power.
- As I810 is conducting, current flows also from pin 16 SMPS transformer to I823 (3.3V regulator) for I501
and front mask buttons supply voltage (then, remote control or front mask buttons can be activated to leave stand-by mode).
µ
com, IR receiver
15
Page 37
APPENDIX
IC DESCRIPTION
1. TDA9361 : TV signal processor - Teletext decoder with embedded µ-Controller.
TDA9381 : TV signal processor - with embedded µ-Controller.
TV-signal Processor
• Multi-standard vision IF circuit with alignment-free PLL demodulator
• Internal (switchable) time-constant for the IF-AGC circuit
• Mono intercarrier with a selective FM-PLL demodulator which can be switched to the different FM sound frequencies
(5.5 / 6.0 / 6.5 MHz)
• Source selection between 'Internal' CVBS and external CVBS or Y/C signals
• Integrated chrominance trap circuit
• Integrated luminance delay line with adjustable delay time
• Asymmetrical ‘delay line type’ peaking in the luminance channel
• Black stretching for non-standard luminance signals
• lntegrated chroma band-pass filter with switchable centre frequency
• Only one reference (12 MHz) crystal required for the µ-Controller, Teletext and the colour decoder
• PAL / NTSC or multistandard colour decoder with automatic search system
• Internal base-band delay line
• RGB control circuit with 'Continuous Cathode Calibration', white point and black level off set adjustment so that the colour
temperature of the dark and the bright parts of the screen can be chosen independently.
• Linear RGB or YUV input with fast blanking for external RGB/YUV sources. The Text/OSD signals are internally supplied
from the µ-Controller/Teletext decoder
• Contrast reduction possibility during mixed-mode of OSD and Text signals
• Horizontal synchronisation with two control loops and alignment-free horizontal oscillator
• Vertical count-down circuit
• Vertical driver optimised for DC-coupled vertical output stages
• Horizontal and vertical geometry processing
µ
-Controller
• 80C51 µ-controller core standard instruction set and timing
• 1µs machine cycle
• 64Kx8-bit programmed ROM
• 3 - 12Kx8-bit Auxiliary RAM (shared with Display and Acquisition)
• Interrupt controller for individual enable/disable with two level priority
• Two 16-bit Timer/Counter registers
• watchdog timer
• Auxiliary RAM page pointer
• 16-bit Data pointer
• IDLE and Power Down (PD) mode
• 8-bit A/D converter
• 4 pins which can be programmed as general I/0 pin or ADC input.
16
Page 38
IC DESCRIPTION
Data Capture
• Text memory 10 pages
• Inventory of transmitted Teletext pages stored in the Transmitted Page Table (TPT) and Subtitle Page Table (SPT)
• Data Capture for 525/625 line WST, VPS (PDC system A) and Wide Screen Signalling (WSS) bit decoding Automatic
selection between 525 WST/625 WST
• Automatic selection between 625 WST/VPS on line 16 of VBI
• Real-time capture and decoding for WST Teletext in Hardware, to enable optimised
• Automatic detection of FASTEXT transmission
• Real-time packet 26 engine in Hardware for processing accented, G2 and G3 characters
• Signal quality detector for video and WST/VPS data types
• Comprehensive teletext language coverage
• Full Field and Vertical Blanking lnterval (VBI) data capture of WST data
µ
-processor throughput
Display
APPENDIX
• Teletext and Enhanced OSD modes
• Features of lever 1.5 WST.
• Serial and Parallel Display Attributes
• Single/Double/Quadruple Width and Height for characters
• Scrolling of display region
• Variable flash rate controlled by software
• Enhanced display features including overlining, underlining and italics
• Soft colours using CLUT with 4096 colour palette
• Globally selectable scan lines per row (9/10/13/16) and character matrix [12x10, 12xl3, 12x16 (VxH)]
• Fringing (Shadow) selectable from N-S-E-W direction
• Fringe colour selectable
• Meshing of defined area
• Contrast reduction of defined area
• Cursor
• Special Graphics Characters with two planes, allowing four colours per character
• 4 WST Character sets (GO/G2) in single device (e.g. Latin, Cyrillic, Greek, Arabic)
• G1 Mosaic graphics, Limited G3 Line drawing characters
• WST Character sets and Closed Caption Character set in single device
Data Capture
The Data Capture section takes in the analogue Composite Video and Blanking Signal (CVBS), and from this extracts the
required data, which is then decoded and stored in memory.
The extraction of the data is performed in the digital domain. The first stage is to convert the analogue CVBS signal into a digital
form. This is done using an ADC sampling at 12MHz. The data and clock recovery is then performed by a Multi-Rate Video
Input Processor (MuIVIP). From the recovered data and clock the following data types are extracted WST Teletext (625/525),
Closed Caption, VPS, WSS. The extracted data is stored in either memory (DRAM) via the Memory Interface or in SFR locations.
17
Page 39
APPENDIX
IC DESCRIPTION
Data Capture Features
- Video Signal Quality detector
- Data Capture for 625 line WST
- Data Capture for 525 line WST
- Data Capture for US Closed Caption
- Data Capture for VPS data (PDC system A)
- Data Capture for Wide Screen Signalling (WSS) bit decoding
- Automatic selection between 525 WST/625WST
- Automatic selection between 625WST/VPS on line 16 of VBI
- Real-time capture and decoding for WST Teletext in Hardware, to enable optimised microprocessor throughput
- 10 pages stored On-Chip
- lnventory of transmitted Teletext pages stored in the Transmitted Page Table (TPT) and Subtitle Page Table (SPT)
- Automatic detection of FASTEXT transmission
- Real-time packet 26 engine in Hardware for processing accented, G2 and G3 characters
- Signal quality detector for WST/VPS data types
- Comprehensive Teletext language coverage
- Full Field and Vertical Blanking Interval (VBI) data capture of WST data
2. TDA9830 TV sound AM-Demodulator and audio source switch
The TDA9830, a monolithic integrated circuit, is designed for AM-sound demodulation used in L and L’ standard.
The IC provides an audio source selector and also mute switch.
Block Diagram : TDA9830
23
Page 45
APPENDIX
IC DESCRIPTION
Pinning
SymbolPinDescription
IFIN1Sound IF differential input signal
n.c.2Not connected
C
AGC
C
REF
n.c.5Not connected
AMOUT6AM demodulator output
AMIN7Input signal from audio switch
AFOUT8Output signal from audio switch
EXTIN9Input signal (from external) to audio switch
SWITCH10Switch input select control
V
P2
MUTE12Mute control
GND13Ground (0V)
V
P1
n.c.15Not connected
IFIN16Sound IF differential input signal
The TDA8357J is a power circuit for use in 90° TV systems for field frequencies of 25 to 200Hz and 16/9 picture tubes. The circuit provides a DC driven vertical deflection output circuit, operating as a highly efficient class G system. Due to the full bridge
output circuit the deflection coils can be DC coupled.
The IC is constructed in a Low Voltage DMOS process that combines Bipolar, CMOS and DMOS devices. MOS transistors are
used in the output stage because of the absence of second breakdown.
- Short rise and fall time of the vertical flyback switch
- Guard circuit
- Temperature (thermal) protection
- High EMC because of common mode inputs
25
Page 47
APPENDIX
IC DESCRIPTION
Pinning
PinSymbolDescription
1Vi(pos)input voltage (positive)
2Vi(neg)input voltage (negative)
3Vpsupply voltage
4
5GNDground
6Vflbflyback supply voltage
7
8
9
V
OB
V
OA
V
O(guard)
V
M
output voltage B
output voltage A
guard output voltage
input measuring resistor
26
Page 48
APPENDIX
IC DESCRIPTION
5. TDA6107Q
The TDA6107Q includes three video output amplifiers in one plastic DIL-Bent-SIL 9-pin medium power package, using high
voltage DMOS technology, and is intended to drive the three cathodes of a colour CRT directly. To obtain maximum performance, the amplifier should be used with black-current control.
Features
- Typical bandwidth of 5.5 MHz for an output signal of 60 Vpp
- High slew rate of 900V/µs
- No external components required
- Very simple application
- Single supply voltage of 200V
- Internal reference voltage of 2.5 V
- Fixed gain of 50.
- Black-current stabilisation (BCS) circuit
- Thermal protection
Pin description
PinSymbolDescription
1
2
3
V
i(1)
V
i(2)
V
i(3)
inverting input 1
inverting input 2
inverting input 3
4GNDground (fin)
5
6
7
8
9
I
om
V
V
V
V
DD
OC(3)
OC(2)
OC(1)
black current measurement output
supply voltage
cathode output 3
cathode output 2
cathode output 1
27
Page 49
APPENDIX
IC DESCRIPTION
6. 24C08 8 Kbit EEPROM
features :
- 8 Kbit serial I2C bus EEPROM
- Single supply voltage : 4.5 V to 5.5 V
- 1 Million Erase/Write cycles (minimum)
- 40 year data retention (minimum)
Pin description
Pin No.NameDescription
1, 2, 3E0, E1, E2Device address
5SDASerial Data/Address Input/Output
6SCLSerial clock
7WCWrite control
8VccSupply voltage
4VssGround
The memory device is compatible with the I2C memory standard. This is a two wire serial interface that uses a bi-directional
data bus and serial clock. The memory carries a built-in 4-bit unique device type identifier code (1010) in accordance with the
I2C bus definition.
Serial Clock (SCL)
The SCL input is used to strobe all data in and out of the memory.
Serial Data (SDA)
The SDA pin is bi-directional, and is used to transfer data in or out of the memory
7. STR - F6653
7-1. general description
The STR-F6653 is an hybrid IC with a build-in MOSFET and control IC, designed for flyback converter type switch mode power
supply applications.
7-2. features
- Small SIP fully isolated moulded 5 pins package
- Many protection functions :
Pulse-by-pulse overcurrent protection (OCP)
Overvoltage protection with latch mode (OVP)
Thermal protection with latch mode (TSD)
28
Page 50
7-3. Block diagram
APPENDIX
IC DESCRIPTION
7-4. pin description
PINNAMESYMBOLDESCRIPTION
1Overcurrent feedbackO.C. P/E.B.Input of over current detection signal and feedback signal
2SourceSMosfet source
3DrainDMosfet drain
4Supply
V
IN
Input of power supply for control circuit
5GroundGNDGround
29
Page 51
APPENDIX
IC DESCRIPTION
7-5. Control part - electrical characteristics
DESCRIPTION
Operation start voltage4-5
Operation stop voltage4-5
Circuit current in operation4-5
Quiescent current in non-operation4-5
Maximum off timeMinimum time for input of quasi resonant
signals
Minimum off timeO.C.P./F.B. terminal threshold voltage 11-5
O.C.P./F.B. terminal threshold voltage 21-5
O.C.P./F.B. terminal extraction current1-2
OVP operation voltage4-5
Latch circuit sustaining voltage4-5
Latch circuit release voltage4-5
Thermal shutdown operating temperature -
7-6. MOSFET electrical characteristics
IC PINS
NUMBERMIN.TYPEMAX
1-5
SYMBOL
VIN (on)
VIN (off)
IIN (on)
IIN (off)
T
(max)
OFF
TTH (2)
T
(min)
OFF
VTH (1)
VTH (2)
I
OCP/FB
VIN (OVP)
IIN (H)
VIN (Loff)
Tj (TSD)
14.41617.6V
910111V
--30mA
--100
45-55
--1.0
--1.5
0.680.730.78V
1.31.451.6V
1.21.351.5mA
20.522.524.5V
--400
6.6-8.4V
140--
RATING
µ
µ
µ
µ
µ
0
UNIT
A
SEC
SEC
SEC
A
C
DESCRIPTION
IC PINS
NUMBERMIN.TYPEMAX
Drain-to-source break down voltage3-2
Drain leakage current3-2
On-resistance3-2
SYMBOL
V
DSS
I
DSS
RDS (on)
650--V
--300
--1.95W
RATING
UNIT
µ
A
Switching time3-2tf--250noec
Thermal resistance-
OCH - F
--0.95
0
C/W
30
Loading...
+ hidden pages
You need points to download manuals.
1 point = 1 manual.
You can buy points or you can get point for every manual you upload.