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S/M No. : TCP185AEF0
Service Manual
Color Television
CHASSIS : CP-185A (AUSTRALIA)
Model : DTA-14V4THS
DTA-20V4THS
DTA-21V4THS
NEC Model : N3481
N4881
FS572
Specification
Version Pal multi system
TV Standard PAL-SECAM B/G, D/K, H, I/I (NTSC : AV Only)
Sound system Mono
Power consumption * 1 Speaker
14":49W / 20":60W / 21" 68W
Speaker 3W 8 Ohm o 7.5W 8 Ohm
Teletext system Teletext
Aerial Input 75 Ohm unbalanced
Channel coverage off-air channels, S-cable channels and hyperband
Tuning system Ferquency synthesiser tuning system
14":34cm
Visual screen size 20':48cm
21":51cm
Channel indication On screen display
Program selection 100 Programmes
RCA jack : Audio input and Vidio input & A/V
output(monitor out)
Auxiliary Outpup Terminal Audio - Video jack on front of cabinet in common
connection with rear RCA jack
Headphone jack on front of cabinet
Remote control R-44N08 AA Battery type
NEC AUSTRALIA Pty. Ltd.
Oct. 2004
TABLE OF CONTENTS
SAFETY INSTRUCTION 2
CIRCUIT BLOCK DIAGRAM 3
ALIGNMENT INSTRUCTIONS 4
1. Service mode 4
2. Microcontroller configuration 4
3. TV SET Alignment 4~5
SCHEMATIC DIAGRAM 6
EXPLODED VIEW 7
PRINTED CIRCUIT BOARD 8
SERVICE PARTS LIST 9
APPENDIX (Appendix is provide only by internet [http://svc.dwe.co.kr])
FUNCTIONAL DESCRIPTION 1~6
IC DESCRIPTION 7~33
1
SAFETY INSTRUCTION
WARNING : Only competent service personnel may carry out work involving the testing or repair of this equipment
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.
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 spe- cial 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.
2
I602
Monitor Out
ISO1 (Audio)
S/W IC
ISO2 Monitor Out
(Video)
S/W IC
3
CIRCUIT BLOCK DIAGRAM
I702
ALIGNMENT INSTRUCTIONS
Microcontroller configuration : Service mode
To switch the TV set into service mode please see instruction below.
Method
1 - Select pr. number 91
2 - Adjust sharpness to minimum and exit all menu.
3 - Quickly press the key sequence : RED - GREEN - menu
4 - List of service manual item
No Item
1 AGC
2 Black R
3 Black G
4 WP Red
5 WP Green
6 WP Blue
7 H Shift
8 V Slope
9 V Amp
10 S Correct
11 V Shift
12 CH Lock
13 MAX Vol
14 AV Start
15 Key Lock
16 PSNS Mode
To exit SERVICE menu press menu key or Std By key.
In Service Mode press "OK" to 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
Method of change from DW REMOCON KEY CODE to NEC.
1. Select pr. number 91
2. Adjust sharpness to minimum and exit off menu.
3. Press volume Key 3times and volume Key 3times on front local key-board.
When changed NEW EEPROM(I702), Remocon key code was changed Daewoo.
In order to change NEC Remocon key code, do above procedure.
TV set Alignment
1 - G2 alignment
- Set TV in NORMAL I mode
- 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 size Vcut-off
14" 115V
20" & 21" 125V
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.
4
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 64dB V 2 for Daewoo tuner (or S/S 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
5
-6-
EXPLODED VIEW
1. 14V4/20v4/21v4
7
PCB MAIN(CP-185A)
-8-
ELECTRICAL PARTS LIST
Caution In this Manual, some parts can be changed for improving, their performance without notice in the parts list. So, if you need the
latest parts information, please refer to PPL(Prats Price List) in Service information Center (http://svc.dwe.co.kr)
Caution is a recommendable part for stock.
is safety component, so it must be used the same component.
LOC PART CODE PART NAME DESCRIPTION REMARK
ZZ100 48B4744N08 TRANSMITTER REMOCON R-44N08 (AA)
ZZ110 PTACPWE040 ACCESSORY AS DTA-21V4THS
00100 4850Q00810 BATTERY R6P/LN
00200 48586002E2 MANUAL INSTRUCTION ENGLISH,ARABIC
M821 4858213801 BAG INSTRUCTION L.D.P.E T0.05X250X400
ZZ120 PTBCSHE040 COVER BACK AS DTA-21V4THS
M211 4852151610 COVER BACK FR HIPS GY
M541 4855415800 SPEC PLATE 150ART P/E FILM (C/TV)
M781 4857817610 CLOTH BLACK FELT 300X20X0.7
ZZ130 PTPKCPE040 PACKING AS DTA-21V4THS
10 6520010100 STAPLE PIN AUTO W65
M801 485805063B BOX CARTON DW-3A
M811 4858189200 PAD EPS 21V4
M821 4858219101 BAG P.E P.E FOAM T0.5X1300X1150
ZZ131 48519A5310 CRT GROUND NET 2101S-1015-1P
ZZ132 58G0000147 COIL DEGAUSSING DC-21SF
ZZ140 PTCACAE040 CABINET AS DTA-21V4THS
M201A 4856017303 SCREW CRT FIX 5X30 L80 BK
M201B 4856214902 WASHER RUBBER CR T2.0
M201C 4856017310 SCREW CRT FIX 5X30 L190 BK
M211A 7172401412 SCREW TAPPTITE TT2 TRS 4X14 MFZN BK
M211D 7172401412 SCREW TAPPTITE TT2 TRS 4X14 MFZN BK
M492 4854941423 BUTTON POWER FR ABS GY
M681 4856812001 TIE CABLE NYLON66 DA100
M683 4856812001 TIE CABLE NYLON66 DA100
M684 4856816300 CLAMP WIRE NYLON 6 (V0)
SP01A 7178301011 SCREW TAPPTITE TT2 WAS 3X10 MFZN
V901 4859640862 CRT A51AEZ90X27 M50
ZZ200 PTFMSJE040 MASK FRONT AS DTA-21V4THS
M191 4851934832 BUTTON CTRL 4941422+5538002
M191A 7178301212 SCREW TAPPTITE TT2 WAS 3X12 MFZN BK
M201 4852068910 MASK FRONT FR HIPS GY
M561 48556159SS MARK BRAND SILVER ETCHING HAIR-LINE
ZZ210 PTSPPWE040 SPEAKER AS DTA-21V4THS
P602A 4850703S50 CONNECTOR YH025-03+35098+ULW=200
SP01 4858314010 SPEAKER SP-5070F01 3W 8 OHM
ZZ290 PTMPMSE040 PCB MAIN MANUAL AS DTA-21V4THS
10 2193102005 SOLDER BAR SN:PB=63:37 S63S-1320
30 2291050616 FLUX SOLDER JS-64T3
40 2291050301 FLUX SOLVENT IM-1000
C404 CMYH3C822J C MYLAR 1.6KV BUP 8200PF J
9
ELECTRICAL PARTS LIST
LOC PART CODE PART NAME DESCRIPTION REMARK
C408 CMYE2D394J C MYLAR 200V PU 0.39MF J
C801 CL1UC3474M C LINE ACROSS 0.47MF 1J(UCVSNDF/SV)+Q/O
C804 CEYD2G101D C ELECTRO 400V FHS 100MF (22X30)
C808 CH1BFE222M C CERA AC U/C/V AC400V 2200PF
C824 CH1HFE102M C CERA AC 4.0KV 1000PF E DG
D707 4858900002 HOLDER LED ASSY LH-3P
D807 DRGP30J - DIODE RGP30J DO-201AD 600V 3A
G902 4SG0DY0001 SPARK GAP SSG-102-A1(1.0KV) BULK
I301 PTF2SW7100 HEAT SINK ASS`Y 1STV9302A- + 7174300811
00001 1STV9302A- IC VERTICAL STV9302A
0000A 4857027100 HEAT SINK SPCC T1.0+SN
0000B 7174300811 SCREW TAPPTITE TT2 RND 3X8 MFZN
I501 1TDA9361N2 IC MICOM OTP TDA9361/PS/N2/5(0664)
I601 1TDA7267A- IC AMP TDA7267A
I702 1AT24C08PC IC AT24C08-10PC
I703 1356VF6 - IC PREAMP 356VF6
I801 PTB2SW4618 HEAT SINK ASS`Y 1STRW6753- + 7174300811
00001 1STRW6753- IC POWER STR-W6753
0000A 4857024618 HEAT SINK AL EX BK
0000B 7174300811 SCREW TAPPTITE TT2 RND 3X8 MFZN
I802 1LTV817C IC PHOTO COUPLER LTV-817C
I804 1LP295033- IC REGULATOR LP2950 3.3V
I805 1S7805P1C- IC REGULATOR S7805PIC 5.0V 1.0A TO-220F-3SL S/LEAD
I901 PTC3SW1100 HEAT SINK ASS`Y 1TDA6107Q- + 7174300811
00001 1TDA6107Q- IC VIDEO AMP TDA6107Q
0000A 4857031100 HEAT SINK A1050P-H24 T2.0
0000B 7174300811 SCREW TAPPTITE TT2 RND 3X8 MFZN
IS01 1MM1111XS- IC SWITCH MM1111XS
IS02 1MM1111XS- IC SWITCH MM1111XS
JPA01 4859109750 JACK PIN BOARD YSC04P-06E
JPA02 4859109950 JACK PIN BOARD PH-JB-9710A
L401 58H0000020 COIL H-LINEARITY L-76(76.5UH)
LF801 5PLF24A1 FILTER LINE LF-24A1
M682 4856812001 TIE CABLE NYLON66 DA100
P401 4859240020 CONN WAFER YFW500-05
P501 4850708N08 CONNECTOR BIC-08T-25T+C-20T+ULW=400
P801 4859903010 CORD POWER AS SAA KKP-560A YFH800 2.6M(INSULATED PIN)
Q401 PTJ2SW7200 HEAT SINK ASS`Y TST1803DH- + 7174301011
00001 TST1803DH- TR HORI ST1803DHI
0000A 4857027200 HEAT SINK AL T1.0
0000B 7174301011 SCREW TAPPTITE TT2 RND 3X10 MFZN
R801 DDC7R0M290 POSISTOR ECPCD7R0M290
R802 RX07B339JP R CEMENT 7W 3.3 OHM J BEN 15MM 4P
SCT1 4859303530 SOCKET CRT PCS629-03C
SF01 5PK2960M FILTER SAW K2960M
10
ELECTRICAL PARTS LIST
LOC PART CODE PART NAME DESCRIPTION REMARK
SW801 5S40101146 SW POWER PUSH SS-160-7-B
T401 50D10A3 - TRANS DRIVE TD-10A3
T402 50H0000269 FBT LTC-515
T801 50M2834A3- TRANS SMPS TSM-2834A3
U100 4859721530 TUNER VARACTOR DT5-BF18D N
ZZ200 PTMPJ0E040 PCB MAIN (RHU) AS DTA-21V4THS
C305 CEXF1E471V C ELECTRO 25V RSS 470MF (10X16) TP
C315 CEXF1E471V C ELECTRO 25V RSS 470MF (10X16) TP
C415 CEXF2E100V C ELECTRO 250V RSS 10MF (10X20) TP
C600 CEXF1E471V C ELECTRO 25V RSS 470MF (10X16) TP
C805 CBXB3D471K C CERA SEMI 2KV BL(N) 470PF K (T)
C810 CEXF2C101V C ELECTRO 160V RSS 100MF (16X25) TP
C811 CEXF2C101V C ELECTRO 160V RSS 100MF (16X25) TP
C813 CEXF1C222V C ELECTRO 16V RSS 2200MF (13X25) TP
C814 CEXF1E102V C ELECTRO 25V RSS 1000MF (13X20) TP
C817 CEXF1C102V C ELECTRO 16V RSS 1000MF (10X20) TP
C818 CEXF1C471V C ELECTRO 16V RSS 470MF (8X12)TP
C903 CCXB3D102K C CERA 2KV B 1000PF K (TAPPING)
ZZ200 PTMPJBE040 PCB MAIN M-10 AS DTA-21V4THS
10 2TM18006BE TAPE MASKING 6.2X500
E001 4856310300 EYE LET BSR T0.2 (R1.6)
E002 4856310300 EYE LET BSR T0.2 (R1.6)
E003 4856310300 EYE LET BSR T0.2 (R1.6)
E004 4856310300 EYE LET BSR T0.2 (R1.6)
E005 4856310300 EYE LET BSR T0.2 (R1.6)
E006 4856310300 EYE LET BSR T0.2 (R1.6)
E009 4856310300 EYE LET BSR T0.2 (R1.6)
E010 4856310300 EYE LET BSR T0.2 (R1.6)
E011 4856310300 EYE LET BSR T0.2 (R1.6)
E012 4856310300 EYE LET BSR T0.2 (R1.6)
E014 4856310300 EYE LET BSR T0.2 (R1.6)
E015 4856310300 EYE LET BSR T0.2 (R1.6)
E016 4856310300 EYE LET BSR T0.2 (R1.6)
E017 4856310300 EYE LET BSR T0.2 (R1.6)
E018 4856310300 EYE LET BSR T0.2 (R1.6)
E019 4856310300 EYE LET BSR T0.2 (R1.6)
E021 4856310300 EYE LET BSR T0.2 (R1.6)
E022 4856310300 EYE LET BSR T0.2 (R1.6)
E100 4856310600 EYE LET BSR T0.2 (R2.3)
E101 4856310600 EYE LET BSR T0.2 (R2.3)
E104 4856310600 EYE LET BSR T0.2 (R2.3)
E105 4856310600 EYE LET BSR T0.2 (R2.3)
E106 4856310600 EYE LET BSR T0.2 (R2.3)
E107 4856310600 EYE LET BSR T0.2 (R2.3)
E108 4856310600 EYE LET BSR T0.2 (R2.3)
11
ELECTRICAL PARTS LIST
LOC PART CODE PART NAME DESCRIPTION REMARK
E109 4856310600 EYE LET BSR T0.2 (R2.3)
N001 4857417500 TERM PIN DA-IB0214(D2.3/DY PIN)
N002 4857417500 TERM PIN DA-IB0214(D2.3/DY PIN)
N003 4857417500 TERM PIN DA-IB0214(D2.3/DY PIN)
N004 4857417500 TERM PIN DA-IB0214(D2.3/DY PIN)
P602 485923162S CONN WAFER YW025-03 (STICK)
R402 RS01Z688J- R M-OXIDE FILM 1W 0.68 OHM J
R415 RS02Z102JS R M-OXIDE FILM 2W 1K OHM J SMALL
R450 RS02Z103JS R M-OXIDE FILM 2W 10K OHM J SMALL
R804 RS02Z338JS R M-OXIDE FILM 2W 0.33 OHM J SMALL
R807 RS02Z221JS R M-OXIDE FILM 2W 220 OHM J SMALL
R821 RS02Z100JS R M-OXIDE FILM 2W 10 OHM J SMALL
R822 RS02Z201JS R M-OXIDE FILM 2W 200 OHM J SMALL
R824 RS02Z101JS R M-OXIDE FILM 2W 100 OHM J SMALL
R835 RS02Z201JS R M-OXIDE FILM 2W 200 OHM J SMALL
R836 RS02Z201JS R M-OXIDE FILM 2W 200 OHM J SMALL
ZZ200 PTMPJRE040 PCB MAIN RADIAL AS DTA-21V4THS
C102 CEXF1E470V C ELECTRO 25V RSS 47MF (5X11) TP
C106 CEXF1H100V C ELECTRO 50V RSS 10MF (5X11) TP
C121 CEXF1H100V C ELECTRO 50V RSS 10MF (5X11) TP
C320 CEXF1H101V C ELECTRO 50V RSS 100MF (8X11.5) TP
C354 CMXM2A104J C MYLAR 100V 0.1MF J (TP)
C355 CMXM2A104J C MYLAR 100V 0.1MF J (TP)
C403 CMXM2A104J C MYLAR 100V 0.1MF J (TP)
C412 CEXF2C229V C ELECTRO 160V RSS 2.2MF (8X11.5)TP
C414 CMXM2A104J C MYLAR 100V 0.1MF J (TP)
C417 CXSL2H470J C CERA 500V SL 47PF J (TAPPING)
C418 CMXM2A104J C MYLAR 100V 0.1MF J (TP)
C420 CCXB1H102K C CERA 50V B 1000PF K (TAPPING)
C423 CCXB2H561K C CERA 500V B 560PF K (TAPPING)
C502 CEXF1E470V C ELECTRO 25V RSS 47MF (5X11) TP
C504 CMXM2A332J C MYLAR 100V 3300PF J (TP)
C507 CEXF1C331V C ELECTRO 16V RSS 330MF (8X11.5) TP
C511 CMXL1J104J C MYLAR 63V MEU 0.1MF J
C512 CMXL1J104J C MYLAR 63V MEU 0.1MF J
C514 CEXF1E101V C ELECTRO 25V RSS 100MF (6.3X11) TP
C517 CEXF1H109V C ELECTRO 50V RSS 1MF (5X11) TP
C519 CEXF1H109V C ELECTRO 50V RSS 1MF (5X11) TP
C522 CEXF1H479V C ELECTRO 50V RSS 4.7MF (5X11) TP
C524 CMXM2A104J C MYLAR 100V 0.1MF J (TP)
C526 CMXM2A104J C MYLAR 100V 0.1MF J (TP)
C528 CEXF1E101V C ELECTRO 25V RSS 100MF (6.3X11) TP
C530 CEXF1E101V C ELECTRO 25V RSS 100MF (6.3X11) TP
C551 CEXF1C101V C ELECTRO 16V RSS 100MF (6.3X11) TP
C555 CEXF1E470V C ELECTRO 25V RSS 47MF (5X11) TP
12
ELECTRICAL PARTS LIST
LOC PART CODE PART NAME DESCRIPTION REMARK
C557 CEXF1H100V C ELECTRO 50V RSS 10MF (5X11) TP
C558 CEXF1H100V C ELECTRO 50V RSS 10MF (5X11) TP
C559 CEXF1H100V C ELECTRO 50V RSS 10MF (5X11) TP
C562 CEXF1H100V C ELECTRO 50V RSS 10MF (5X11) TP
C564 CEXF1E101V C ELECTRO 25V RSS 100MF (6.3X11) TP
C593 CEXF1E101V C ELECTRO 25V RSS 100MF (6.3X11) TP
C599 CEXF1H229V C ELECTRO 50V RSS 2.2MF (5X11) TP
C601 CEXF1H108V C ELECTRO 50V RSS 0.1MF (5X11) TP
C603 CEXF1C101V C ELECTRO 16V RSS 100MF (6.3X11) TP
C650 CEXF1E470V C ELECTRO 25V RSS 47MF (5X11) TP
C770 CEXF1H100V C ELECTRO 50V RSS 10MF (5X11) TP
C802 CCXF3A472Z C CERA 1KV F 4700PF Z (T)
C803 CCXF3A472Z C CERA 1KV F 4700PF Z (T)
C806 CCXB1H821K C CERA 50V B 820PF K (TAPPING)
C809 CCXB3A271K C CERA 1KV B 270PF K (TAPPING)
C812 CEXF2A100V C ELECTRO 100V RSS 10MF (6.3X11) TP
C815 CEXF2C109V C ELECTRO 160V RSS 1MF (6.3X11) TP
C816 CEXF1E101V C ELECTRO 25V RSS 100MF (6.3X11) TP
C819 CEXF1E470V C ELECTRO 25V RSS 47MF (5X11) TP
C820 CEXF1C101V C ELECTRO 16V RSS 100MF (6.3X11) TP
C822 CMXM2A104J C MYLAR 100V 0.1MF J (TP)
C832 CEXF1H100V C ELECTRO 50V RSS 10MF (5X11) TP
C833 CMXM2A473J C MYLAR 100V 0.047MF J (TP)
C834 CEXF1H109V C ELECTRO 50V RSS 1MF (5X11) TP
C835 CCXB2H471K C CERA 500V B 470PF K (TAPPING)
C901 CMXL2E104K C MYLAR 250V MEU 0.1MF K
C902 CCXB1H561K C CERA 50V B 560PF K (TAPPING)
CA04 CEXD1H229F C ELECTRO 50V RND 2.2MF (5X11) TP
CA05 CCXB1H102K C CERA 50V B 1000PF K (TAPPING)
F802 5FWPS4022L FUSE WIDE TL 250V 4A CASE
G901 4SG0DX0001 SPARK GAP SSG-102-A1(1.0KV) TAP
G903 4SG0DX0001 SPARK GAP SSG-102-A1(1.0KV) TAP
G904 4SG0DX0001 SPARK GAP SSG-102-A1(1.0KV) TAP
I803 1K1A431B IC REGULATOR(SHUNT) KIA431B 2.495V 0.5% TO-92
L802 58C0000142 COIL CHOKE ELC 0809 940K
Q101 TKTC3198Y- TR KTC3198Y
Q402 TKTC3207 TR KTC3207 (TP)
Q403 TKTC3198Y- TR KTC3198Y
Q501 TKTA1266Y- TR KTA1266Y (TP)
Q502 TKTC3198Y- TR KTC3198Y
Q503 TKTC3198Y- TR KTC3198Y
Q506 TKTC3198Y- TR KTC3198Y
Q507 TKTA1266Y- TR KTA1266Y (TP)
Q520 TKTC3198Y- TR KTC3198Y
Q531 TKTA1266Y- TR KTA1266Y (TP)
13
ELECTRICAL PARTS LIST
LOC PART CODE PART NAME DESCRIPTION REMARK
Q805 TKTC3205Y- TR KTC3205Y (TP)
Q807 TKTA1281Y- TR KTA1281Y
Q808 TKTC3198Y- TR KTC3198Y
Q811 TKTA1266Y- TR KTA1266Y (TP)
Q812 TKTC3198Y- TR KTC3198Y
Q851 TKTC3198Y- TR KTC3198Y
Q852 TKTC3198Y- TR KTC3198Y
R304 RN01B109JS R METAL FILM 1W 1 OHM J SMALL
R306 RN01B109JS R METAL FILM 1W 1 OHM J SMALL
R407 RN01B109JS R METAL FILM 1W 1 OHM J SMALL
R907 RN01B102JS R METAL FILM 1W 1K OHM J SMALL
SW700 5S50101090 SW TACT THVH472GCA
SW701 5S50101090 SW TACT THVH472GCA
SW702 5S50101090 SW TACT THVH472GCA
SW703 5S50101090 SW TACT THVH472GCA
SW704 5S50101090 SW TACT THVH472GCA
X502 5XEX12R00E CRYSTAL QUARTZ HC-49/U 12.000MHZ 30PPM TP
Z501 5PXXT5R5MB FILTER CERA XT 5.5MB-TP
ZZ200 PTMPJAE040 PCB MAIN AXIAL AS DTA-21V4THS
10 2TM14006LB TAPE MASKING 3M #232 6.0X2000M
20 2TM10006LB TAPE MASKING 3M #232-MAP-C 6.2X2000M
A001 4859810493 PCB MAIN 246X246 D1B
C350 CCZB1H103K C CERA HIKB 50V 0.01MF K AXIAL
C501 CCZF1H103Z C CERA 50V F 0.01MF Z
C515 CBZR1C222M C CERA 16V Y5R 2200PF M (AXIAL)
C516 CBZR1C472M C CERA 16V Y5R 4700PF M (AXIAL)
C518 CBZF1H104Z C CERA SEMI 50V F 0.1MF Z
C520 CCZB1H221K C CERA 50V B 220PF K (AXIAL)
C521 CCZB1H221K C CERA 50V B 220PF K (AXIAL)
C523 CCZF1H103Z C CERA 50V F 0.01MF Z
C525 CCZB1H102K C CERA 50V B 1000PF K (AXIAL)
C527 CCZF1H473Z C CERA 50V F 0.047MF Z
C531 CCZF1H473Z C CERA 50V F 0.047MF Z
C560 CBZF1H104Z C CERA SEMI 50V F 0.1MF Z
C561 CBZF1H104Z C CERA SEMI 50V F 0.1MF Z
C570 CBZR1C472M C CERA 16V Y5R 4700PF M (AXIAL)
C571 CCZB1H821K C CERA 50V B 820PF K AXIAL
C585 CBZR1C222M C CERA 16V Y5R 2200PF M (AXIAL)
C590 CZCH1H270J C CERA CH 50V 27PF J AXL 52MM
C591 CZCH1H270J C CERA CH 50V 27PF J AXL 52MM
C602 CCZF1H103Z C CERA 50V F 0.01MF Z
CA06 CCZB1H102K C CERA 50V B 1000PF K (AXIAL)
CA07 CCZB1H102K C CERA 50V B 1000PF K (AXIAL)
CA08 CCZB1H102K C CERA 50V B 1000PF K (AXIAL)
D101 D1N4148 - DIODE 1N4148 (TAPPING)
14
ELECTRICAL PARTS LIST
LOC PART CODE PART NAME DESCRIPTION REMARK
D120 DUZ33B DIODE ZENER UZ-33B
D313 D1N4004S DIODE 1N4004S
D405 D1N4937G DIODE 1N4937G (TAPPING)
D407 D1N4937G DIODE 1N4937G (TAPPING)
D408 D1N4937G DIODE 1N4937G (TAPPING)
D450 D1N4937G DIODE 1N4937G (TAPPING)
D520 D1N4148 - DIODE 1N4148 (TAPPING)
D521 D1N4148 - DIODE 1N4148 (TAPPING)
D531 D1N4148 - DIODE 1N4148 (TAPPING)
D532 D1N4148 - DIODE 1N4148 (TAPPING)
D533 D1N4148 - DIODE 1N4148 (TAPPING)
D534 D1N4148 - DIODE 1N4148 (TAPPING)
D801 DLT2A05G DIODE LT2A05G (TP)
D802 DLT2A05G DIODE LT2A05G (TP)
D803 DLT2A05G DIODE LT2A05G (TP)
D804 DLT2A05G DIODE LT2A05G (TP)
D805 D1N4937G DIODE 1N4937G (TAPPING)
D806 DUZ5R6BM DIODE ZENER UZ-5.6BM
D808 D1N4937G DIODE 1N4937G (TAPPING)
D809 DRGP15J - DIODE RGP15J DO-204AC 600V 1.5A
D810 DHER103G DIODE HER103G
D812 DUZ8R2BM DIODE ZENER UZ-8.2BM
D813 D1N4148 - DIODE 1N4148 (TAPPING)
D814 D1N4937G DIODE 1N4937G (TAPPING)
D815 D1N4148 - DIODE 1N4148 (TAPPING)
D817 DUZ6R2BM DIODE ZENER UZ-6.2BM
DA02 DUZ5R6BM DIODE ZENER UZ-5.6BM
DA04 DUZ5R6BM DIODE ZENER UZ-5.6BM
DA05 DUZ5R6BM DIODE ZENER UZ-5.6BM
DA11 DUZ5R6BM DIODE ZENER UZ-5.6BM
DA13 CCZB1H271K C CERA 50V B 270PF K
DA27 DUZ5R6BM DIODE ZENER UZ-5.6BM
J001 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
J002 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
J003 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
J004 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
J005 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
J006 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
J008 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
J010 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
J011 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
J012 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
J013 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
J014 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
J016 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
15
ELECTRICAL PARTS LIST
LOC PART CODE PART NAME DESCRIPTION REMARK
J017 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
J018 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
J019 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
J020 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
J021 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
J022 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
J023 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
J026 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
J027 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
J029 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
J030 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
J035 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
J037 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
J038 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
J040 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
J041 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
J044 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
J045 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
J046 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
J048 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
J049 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
J050 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
J052 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
J053 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
J054 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
J055 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
J056 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
J057 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
J058 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
J061 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
J062 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
J063 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
J064 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
J065 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
J066 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
J086 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
J087 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
J088 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
J089 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
J094 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
J095 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
J102 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
J103 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
J105 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
J106 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
16
ELECTRICAL PARTS LIST
LOC PART CODE PART NAME DESCRIPTION REMARK
J107 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
J108 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
J109 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
J111 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
J112 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
J113 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
J114 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
J115 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
J116 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
J117 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
J118 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
J119 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
J120 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
J121 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
J122 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
J123 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
J124 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
J125 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
L101 5CPZ569K02 COIL PEAKING 5.6UH K (AXIAL 3.5MM)
L303 5MC0000100 COIL BEAD HC-3550
L500 5CPZ829K02 COIL PEAKING 8.2UH K (AXIAL 3.5MM)
L501 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
L502 5CPZ100K02 COIL PEAKING 10UH K (AXIAL 3.5MM)
L510 5MC0000100 COIL BEAD HC-3550
L511 5MC0000100 COIL BEAD HC-3550
L601 5MC0000100 COIL BEAD HC-3550
L602 5CPZ109M04 COIL PEAKING 1UH 10.5MM M (LAL04TB)
L603 5CPZ109M04 COIL PEAKING 1UH 10.5MM M (LAL04TB)
L604 5CPZ109M04 COIL PEAKING 1UH 10.5MM M (LAL04TB)
L605 5CPZ109M04 COIL PEAKING 1UH 10.5MM M (LAL04TB)
L801 5MC0000100 COIL BEAD 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
R121 RD-2Z332J- R CARBON FILM 1/2 3.3K OHM J
R302 RD-2Z129J- R CARBON FILM 1/2 1.2 OHM J
R303 RD-AZ152J- R CARBON FILM 1/6 1.5K OHM J
R305 RD-2Z331J- R CARBON FILM 1/2 330 OHM J
R310 RD-AZ102J- R CARBON FILM 1/6 1K OHM J
R311 RD-AZ102J- R CARBON FILM 1/6 1K OHM J
R351 RN-4Z1501F R METAL FILM 1/4 1.50K OHM F
17
ELECTRICAL PARTS LIST
LOC PART CODE PART NAME DESCRIPTION REMARK
R352 RD-AZ471J- R CARBON FILM 1/6 470 OHM J
R354 RD-4Z229J- R CARBON FILM 1/4 2.2 OHM J
R401 RD-4Z472J- R CARBON FILM 1/4 4.7K OHM J
R404 RD-2Z751J- R CARBON FILM 1/2 750 OHM J
R405 RD-AZ102J- R CARBON FILM 1/6 1K OHM J
R420 RD-AZ102J- R CARBON FILM 1/6 1K OHM J
R430 RD-4Z223J- R CARBON FILM 1/4 22K OHM J
R431 RD-4Z303J- R CARBON FILM 1/4 30K 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
R512 RD-AZ101J- R CARBON FILM 1/6 100 OHM J
R513 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-AZ391J- R CARBON FILM 1/6 390 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
R529 RD-AZ102J- R CARBON FILM 1/6 1K OHM J
R530 RD-AZ102J- R CARBON FILM 1/6 1K OHM J
R531 RD-AZ103J- R CARBON FILM 1/6 10K OHM J
R533 RD-AZ103J- R CARBON FILM 1/6 10K 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
R542 RD-AZ101J- R CARBON FILM 1/6 100 OHM J
R544 RD-AZ471J- R CARBON FILM 1/6 470 OHM J
R549 RD-AZ101J- R CARBON FILM 1/6 100 OHM J
R550 RD-AZ101J- R CARBON FILM 1/6 100 OHM J
R551 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
R552 RD-AZ471J- R CARBON FILM 1/6 470 OHM J
R553 RD-AZ202J- R CARBON FILM 1/6 2K OHM J
R554 RD-AZ471J- R CARBON FILM 1/6 470 OHM J
18
ELECTRICAL PARTS LIST
LOC PART CODE PART NAME DESCRIPTION REMARK
R555 RD-AZ103J- R CARBON FILM 1/6 10K OHM J
R556 RD-AZ562J- R CARBON FILM 1/6 5.6K OHM J
R560 RD-4Z102J- R CARBON FILM 1/4 1K OHM J
R561 RD-AZ221J- R CARBON FILM 1/6 220 OHM J
R567 RD-AZ101J- R CARBON FILM 1/6 100 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
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-4Z224J- R CARBON FILM 1/4 220K OHM J
R586 RD-AZ221J- R CARBON FILM 1/6 220 OHM J
R587 RD-AZ102J- R CARBON FILM 1/6 1K OHM J
R596 RD-AZ122J- R CARBON FILM 1/6 1.2K 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-AZ183J- R CARBON FILM 1/6 18K OHM J
R601 RD-AZ822J- R CARBON FILM 1/6 8.2K OHM J
R602 RN-AZ1101F R METAL FILM 1/6 1.10K OHM F
R603 RD-4Z100J- R CARBON FILM 1/4 10 OHM J
R607 RD-AZ470J- R CARBON FILM 1/6 47 OHM J
R610 RD-AZ162J- R CARBON FILM 1/6 1.6K OHM J
R710 RD-AZ431J- R CARBON FILM 1/6 430 OHM J
R711 RD-AZ681J- R CARBON FILM 1/6 680 OHM J
R712 5MC0000100 COIL BEAD HC-3550
R713 RD-AZ100J- R CARBON FILM 1/6 10 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
R803 RD-4Z224J- R CARBON FILM 1/4 220K OHM J
R806 RD-4Z152J- R CARBON FILM 1/4 1.5K OHM J
R808 RD-4Z102J- R CARBON FILM 1/4 1K OHM J
R809 RD-AZ473J- R CARBON FILM 1/6 47K OHM J
R810 RD-4Z479J- R CARBON FILM 1/4 4.7 OHM J
R811 RD-AZ102J- R CARBON FILM 1/6 1K OHM J
R813 RC-2Z565KP R CARBON COMP 1/2 5.6M OHM K
R814 RD-AZ221J- R CARBON FILM 1/6 220 OHM J
R815 RD-AZ332J- R CARBON FILM 1/6 3.3K OHM J
R816 RD-AZ103J- R CARBON FILM 1/6 10K OHM J
R817 RD-AZ103J- R CARBON FILM 1/6 10K OHM J
R818 RD-AZ473J- R CARBON FILM 1/6 47K OHM J
R823 RD-AZ561J- R CARBON FILM 1/6 560 OHM J
R825 RD-AZ222J- R CARBON FILM 1/6 2.2K OHM J
19
ELECTRICAL PARTS LIST
LOC PART CODE PART NAME DESCRIPTION REMARK
R826 RD-AZ751J- R CARBON FILM 1/6 750 OHM J
R827 RD-AZ473J- R CARBON FILM 1/6 47K OHM J
R828 RD-AZ103J- R CARBON FILM 1/6 10K OHM J
R831 RD-AZ473J- R CARBON FILM 1/6 47K OHM J
R832 RD-AZ561J- R CARBON FILM 1/6 560 OHM J
R833 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING
R834 RD-AZ561J- R CARBON FILM 1/6 560 OHM J
R840 RN-4Z6801F R METAL FILM 1/4 6.8K OHM F
R841 RN-4Z1003F R METAL FILM 1/4 100K OHM F
R842 RN-4Z2201F R METAL FILM 1/4 2.20K OHM F
R843 RD-AZ103J- R CARBON FILM 1/6 10K OHM J
R901 RD-AZ102J- R CARBON FILM 1/6 1K OHM J
R902 RD-AZ102J- R CARBON FILM 1/6 1K OHM J
R903 RD-AZ102J- R CARBON FILM 1/6 1K OHM J
R904 RD-2Z152J- R CARBON FILM 1/2 1.5K OHM J
R905 RD-2Z152J- R CARBON FILM 1/2 1.5K OHM J
R906 RD-2Z152J- R CARBON FILM 1/2 1.5K OHM J
RA02 RD-AZ101J- R CARBON FILM 1/6 100 OHM J
RA04 RD-AZ680J- R CARBON FILM 1/6 68 OHM J
RA07 RD-AZ390J- R CARBON FILM 1/6 39 OHM J
RA16 RD-AZ750J- R CARBON FILM 1/6 75 OHM J
RA20 RD-AZ473J- R CARBON FILM 1/6 47K OHM J
RA30 RD-AZ101J- R CARBON FILM 1/6 100 OHM J
20
APPENDIX
FUNCTIONAL DESCRIPTION For CP-185A
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
-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 -Controller/Teletext
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.
1
FUNCTIONAL DESCRIPTION APPENDIX
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: