K0059-01-04

GENERAL GUIDE GUA GENERAL
External antenna jack (Model B only) Toma para antena externa (Solamente el modelo B) (EXT ANT) Earphone jack Toma para audfono (EAR) Tuning indicator Indicador de sintonizacin Speaker Altavoz Rod antenna Antena telescpica

Function selector

UHF: UHF band CH14-CH69 (model B) CH21-CH69 (models C and N) CH21-CH68 (model D) CH2-CH13 (model B)
AC adapter Adaptador de CA (AD-K64/AD-K65)

VHF: VHF band

Figure 1 Figura 1
CH2-CH12 (models C and N)

OFF: Power turned OFF

B/C/D/N
USER'S GUIDE GUA DEL USUARIO MODE D'EMPLOI
LCD Color Television Televisor color con pantalla de cristal lquido Tlviseur couleur cran LCD
TV-890/990 Model B only Solamente el modelo B Modle B seulement

Selector de funciones

UHF: Banda UHF canales 14 al 69 (modelo B) canales 21 al 69 (modelos C y N) canales 21 al 68 (modelo D) VHF: Banda VHF canales 2 al 13 (modelo B) canales 2 al 12 (modelos C y N) OFF: Unidad apagada
External power source jack Toma para alimentacin externa (DC IN 6V)

Figure 2 Figura 2

(UHF/VHF/OFF)
Car adapter Adaptador para automvil (CA-K65) Antenna adapter Adaptador de antena

Figure 3 Figura 3

MA0306-D Printed in China Imprim en Chine
Model B only This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Changes or modifications to the product not expressly approved by CASIO could void the users authority to operate the product. English
Thank you for purchasing this CASIO Color LCD Television. Be sure you carefully read this manual and follow its instructions whenever using the TV. Tuning keys Teclas de sintonizacin (TUNING)
Volume dial Perilla de volumen (VOLUME) Brightness dial Perilla de brillo (BRIGHT) Channel display Indicador de canal Audio/Video input jack (Models C, D and N) Toma de entrada para audio/video (Modelos C, D y N) (AUDIO/VIDEO) Stand Pedestal
External antenna jack (Model B only) Toma para antena externa (Solamente el modelo B) (EXT ANT)

RF output Salida de RF

Figure 4 Figura 4
RF cord Cable de RF Audio output Salida de audio White Blanco Yellow Amarillo AUDIO/VIDEO cord Cable de AUDIO/VIDEO
Video output Salida de video

Figure 5 Figura 5

Battery compartment cover Cubierta de compartimiento de pila

PRECAUTIONS

Never attempt your own maintenance. Avoid water and dust. Do not use thinners or other chemical cleaners. Only use specified adapters and power sources. Never use adapters other than genuine CASIO adapters. Other adapters may cause serious damage. Do not expose the TV to temperature extremes or direct sunlight. Turn the TV off when not using it, and unplug the adapter. Avoid dropping the TV or otherwise subjecting it to strong impact. When you do not use your TV for extended periods, be sure to remove the batteries. Old batteries can leak causing damage and malfunction of the TV.

Audio/Video input jack (Models C, D and N) Toma de entrada para audio/video (Modelos C, D y N) (AUDIO/VIDEO)
Recommended for areas with strong signal reception. Recomendado para reas con recepcin de seal fuerte.

IMPORTANT!

Incorrectly using batteries can cause them to burst or leak, possibly damaging the interior of the TV. Note the following precautions: Be sure that the positive (+) and negative () poles of each battery are facing in the proper direction. Never mix batteries of different types. Never mix old batteries and new ones. Never leave dead batteries in the battery compartment. Remove the batteries if you do not plan to use the TV for long periods. Replace the batteries at least once every 2 years, no matter how much the TV is used during that period. Never try to recharge the batteries. Do not expose batteries to direct heat, let them become shorted, or try to take them apart. Should a battery leak, clean out the battery compartment of the TV immediately, taking care to avoid letting the battery fluid come into direct contact with your skin.

WATCHING THE TELEVISION

1. Extend the rod antenna. 2. Use the function selector to select either VHF (except model D) or UHF. 3. Press either of tuning keys , and the tuning indicator will move to the next receivable channel. Repeat this operation until the desired channel is tuned in. 4. Use the volume dial to set the sound to a suitable level. 5. Use the brightness dial to adjust the brightness of the Brighter picture. The brightness of the screen changes with the viewing angle.

BRIGHT

3-way power supply system Batteries: 4 AA-size dry batteries AC: AC adapter AD-K64/AD-K65 (option) Car battery: Car adapter CA-K65 (option) Power Consumption: Approx. 3.1 W Approx. 3.3 W (Model B only) Ambient Temperature Range: 32F (0C) ~ 104F (40C) Dimensions: 3 3/16 (W) 1 7/16 (D) 5 1/16 (H) inches 8.1 (W) 3.7 (D) 12.9 (H) cm Weight (excluding batteries): Approx. 6.7 oz 190 g Specifications and design are subject to change without notice.

Power Supply:

Cuando las condiciones de recepcin son malas, es posible que el indicador de sintonizacin no se detenga en ningn canal; ello significa que el sintonizador automtico no puede sintonizar ningn canal porque las seales son muy dbiles. En este caso, ubique su televisor en otro sitio, donde se logre una mejor recepcin.
s Lugares donde la recepcin no es buena s
Lejos de las emisoras de TV, entre estructuras de hierro o cerca de montaas. Stanos, tneles y edificios con estructuras de hierro. Cerca de cables de alta tensin, carteles de nen o emisoras de radio cuyas frecuencias interfieran. Cerca de ferrocarriles, autopistas o aeropuertos. Dentro de trenes o automviles.

OPTIONS

AC adapter : AD-K64/AD-K65 AUDIO/VIDEO cord : AV-C1*2 RF cord : CF-13*1 Model only. *1 ModelsBC, D and N *2 Car adapter : Antenna adapter :

CA-K65 AS-35S*1

s Luz de fondo s
En temperaturas bajas, llevar cierto tiempo hasta que el material fosforescente se ilumine, en algunos casos, la imagen toma un tono rojizo. Ello no significa que se haya averiado la unidad; la imagen se normalizar despus de unos momentos.

Darker

BATTERY LIFE
Under poor reception conditions, the tuning indicator may continue to move without stopping because the auto tuner cannot detect weak broadcasts. In this case, use a commercially available external antenna (model B only) or relocate the TV to a place where reception is better. The first indication of weakening batteries will be a reduction in volume followed by unstable picture quality and sound. At this time, replace batteries with a full set of new ones and never mix battery types. Battery Type LR6 Battery Life Approx. 4.5 hours Approx. 4.0 hours (Model B only)
Note: Some of the options listed above may not be available in certain geographic areas.
FUENTES DE ALIMENTACIN OPCIONALES
CA de la lnea Vea la Figura 1 en la Gua General en la parte superior de esta pgina. El uso del adaptador opcional (AD-K64/AD-K65) permite alimentar la unidad con CA de la lnea. Batera de automvil (CC 12V) Vea la Figura 2 en la Gua General en la parte superior de esta pgina. El uso del adaptador para automvil opcional (CA-K65) permite alimentar la unidad por medio de una batera de automvil, a travs del receptculo para el encendedor de cigarrillos. Nunca mire la televisin mientras conduce un vehculo.
s Locations where TV reception is bad s
Far away from broadcasting stations, among ferro-concrete structures or near mountains. Underground, in tunnels or in ferro-concrete buildings. Near high-tension wires, neon signs, or radio stations whose frequencies interfere. Near railroads, highways or airports. In trains or cars.
Please keep all information for future reference. Only models TV-970D and TV-970N conform with EC Directives 89/336/EEC, 92/31/EEC and 93/68/EEC. Casio Electronics Co., Ltd.
Only use alkaline batteries. Battery life will be shortened significantly if manganese batteries are used. Low battery power generates heat. Heat does not mean malfunction. Effective battery life may differ depending on brand.

s Backlight s

In low temperatures, it will take some time for the fluorescent material to illuminate, or the light will take on a reddish tinge. This does not indicate malfunction of the backlight. Normal operation will resume after a short while.

OPTIONAL POWER SOURCES

AC household current See Figure 1 in General Guide at the top of this page. The optional AC adapter (AD-K64/AD-K65) allows the TV to be powered by standard household current. Car battery (DC12V) See Figure 2 in General Guide at the top of this page. The optional car adapter (CA-K65) allows the TV to be powered by a car battery through the vehicles cigarette lighter. You should never, however, attempt to watch television while operating a motor vehicle.
Be sure that the power of the TV and of the unit you are connecting it to is switched off. Use only hardware specifically recommended by CASIO when connecting to other equipment.

TROUBLESHOOTING

Whenever you experience problems, check the following points before assuming malfunction of the TV. Picture Sound Items to check 1. Are batteries dead? 2. Are batteries loaded with their + and ends oriented correctly? 3. Is the AC adapter or car adapter connected correctly? 4. Do batteries conform to specification? 5. Is something plugged into the Audio/ Video input jack? 1. Is the volume setting too low? 2. Is the earphone plugged in? 3. Are batteries dead? Is the brightness setting correct? Is something plugged into the Audio/Video input jack? Is the rod antenna correctly adjusted? 1. Is the rod antenna adjusted correctly? 2. Is a cable that does not conform with specifications plugged into the Audio/ Video input jack? 3. Are there signals interfering from cars or electrical appliances? 4. Is the signal too weak or are there obstacles nearby? 1. Is the brightness setting correct? 2. Are batteries dead? Are batteries dead? Dead batteries tend to become warm and should be replaced.
Never connect the car adapter to cigarette lighters for such vehicles as trucks or busses that use 24V DC electrical power. When an adapter is plugged into the DC IN 6V jack, the battery power source is automatically switched OFF. Adapters may become warm to the touch after extended periods of use. This is normal and is no cause for alarm. Always be sure to use the AD-K64/AD-K65 AC adapter (option) or CA-K65 car adapter (option) only. Using any other AC adapter or car adapter can cause damage to the TV not covered by the warranty. Be sure to switch power off before connecting or disconnecting the adapter. If you do not plan to use the TV for a long time, be sure to disconnect the AC adapter from the wall outlet or the car adapter from the cigarette lighter. Failure to do so may result in damage to the TV or it can run down your cars battery. Use the AC adaptor where it will not be splashed with water. Water creates the risk of fire and electric shock. Do not place a vase or any other container filled with liquid on top of the AC adaptor. Water creates the risk of fire and electric shock.

(without price)

TV-1800B (NTSC)

(KX-523)

FEB. 1997

CONTENTS

Page SPECIFICATIONS... 1 BLOCK DIAGRAM... 2 CIRCUIT OPERATIONS... 3 PRINTED CIRCUIT BOARDS.. 4 PARTS LIST.... 6 EXPLODED VIEW... 9 SCHEMATIC DIAGRAMS... 11 WAVEFORMS.... 13

SPECIFICATIONS

Item 1. Power voltage 2. Power consumption 3. Current consumption 4. Battery life (with alkaline batteries) DC 6.0 V Approx. 3.6 W Approx. 600 mA Approx. 2.5 hours Batteries 5. Power supply : 4 LR6 (D) size batteries Specification
Car adaptor : CA-K65 AC adaptor : AD-K65 Earphone jack : 3.5 mini : 6.0 V DC IN : 3.5 mini

6. Connection terminals

External power jack External antenna jack
7. Screen size 8. No. of picture element 9. Dimensions 10. Weight
2.5 inches 118,800 (540 220) dots 135 mm (H) 91 mm (W) 38 mm (D) 240 g without batteries AC adaptor : AD-K65 : CA-K65

11. Options

Car adaptor
Antenna matching device : AS-35S

Color System NTSC

TV System M/M US
Channel VHF: 2 ~ 13 ch UHF: 14 ~ 69 ch

BLOCK DIAGRAM

Antenna
TU200 Tuner 2 Q200 IF Amp.
ICVideo Sound Det. FM AFT Circuit AGC Circuit VR600 Audio Amp. Volume Control IC600 Speaker
IC300 Chroma Circuit Common Driver LCD

Tuning Voltage Generator

IC700 Osc. Display Control A-D Converter Auto-Tuning Control

Segment Driver

Q800 ~ Q806, Q810, Q811 Display Voltage Generator

Power Supply

VCC2 (4.3 0.02 V) VCC7 (41.6 ~ 51.6 V) VEE1 (-6.5 ~ -8.0 V)

Brightness Control

1 Color Tuner: TU200 TEPE5-02 Selects a desired radio wave and changes it to the video IF signal. 2 Video IF Amp.: Q200 2SC4238 Amplifies the video IF signal output from the tuner TU by 10 times (20 dB). 3 Video Det./Sound Det./FM Det./AFT/AGC: IC200 M51348FP Eliminates the carrier wave in the video IF signal, and picks up the video signal and the sound IF signal. Also, the sound signal is picked up from the sound IF signal by FM detection. 4 Audio Amp.: IC600 NJM2070M Sound amplification. 5 Chroma Circuit: IC300 M52045FP Generates the tricolor (red, green, and blue) from the video signal. 6 Osc./A-D Converter/Display Control/ Auto-Tuning Control : IC700 MSM6625-01 GSK-640E Converts the color signal into a digital signal. Also, generates the clock pulse for the display and controls the display. 7 Tuning Voltage Generator: IC500 MSC1169MS-K Generates the tuning voltage with the tuning pulse (TU) output from 6. 8 Display Voltage Generator: IC800 BA10358F, Q800 ~ Q806 Q810 Q811 2SD1149-S, 2SD601A-R3, 2SB709A-R Generates the display voltages V0 ~ V4 with VEE1 and VCC7 outputs from the power supply.

CIRCUIT OPERATIONS

TE2 VSS2 TE1 TE3 TE4 TE5 TE6 M6 M5 M4 M3 M2 M1 AFT Key Switch Control KDB KCB AVB UHF
AD2 Test Control AD1 B G A/D R Tuning Control RLL VDD2 RHH Pulse Width Modulation D/A M7 M8 M9 M10 PSi VSS1 Data Output Display Control Vertical positioning Control Horizontal positioning Control Mode Control Channel bar Control Tuning Voltage UP/DOWN Counter Test Circuit Frequency Divider Sweep Control Mode Control

AFT Control

Mute Control
VLB Synchronism Judgment TU Frequency Separator Phase Comparator VDD1 C-S PD

Frequency Divider

OSC1 Oscillator OSC2

D1 D2 D3 D4 D5 D6

CDB CFB CNB ECB

SNB SCB STB HDB

CK1 CK2
Signal Name D1 ~ D6 SNB CDB CFB CNB
Function Display data output terminal Data latch signal Scanning start signal Output voltage changeover signal Scanning signal shift lock signal

D100 D150 D152 D155 D180 D500 D700 D703 D705 D803 D805 FU100 IC200 IC300 IC500 IC600 IC700 IC800 JK100 JK200 JK600 Q100 Q101 Q111 Q200 Q300 Q800 Q801 Q802 Q803 Q804 Q805 Q806 Q810 Q811 SW100 SW100 TU200 VR600 VR800
Diodes Chip diode Chip diode Chip diode Chip diode Chip diode Chip zener diode Chip diode Chip diode Variable diode Chip diode Chip diode Fuse Fuse ICs Linear IC Linear IC Linear IC Linear IC LSI OP AMP Jacks Jack Jack Jack Transistors Chip transistor Chip transistor Chip transistor Chip transistor Chip transistor Chip transistor Chip transistor Chip transistor Chip transistor Chip transistor Chip transistor Chip transistor Chip transistor Chip transistor Switch Slide switch Converter DC-DC converter Tuner Tuner Variable resistors Volume Volume
MA152WK-(TX) MA152WK-(TX) MA152WK-(TX) MA153A-(TX) SC016-2-TE12RA MA3330-M(TX) MA157A-(TX) MA157A-(TX) MA329-(TX) MA157A-(TX) MA152WA-(TX) ATSCR0.80A M51348FP-T1 M52042FP-T1 MSC1169MS-KR1-620 NJM2070M-T1 MSM6625-01GSK-640E BA10358F-T1 HEC2500-010110 HSJ1456-01-210 HSJ1456-01-210 2SB709A-R(TX) 2SD601A-R(TX) 2SD1119-R(TX) 2SC4238-(TX) 2SB709A-R(TX) 2SD601A-R(TX) 2SB709A-R(TX) 2SD601A-R(TX) 2SD601A-R(TX) 2SD601A-R(TX) 2SD1149-S(TX) 2SD601A-R(TX) 2SB709A-R(TX) 2SD601A-R(TX) ESD-11V231 LC12U-31 TEPU5-02 RK09H11T-10KB RK09H11T-100KB
Common Common Common Common Common Common Common Common Common Common Common Common Common Common Common Common Common Common Common Common Common Common Common Common Common Common Common Common Common Common Common Common Common Common Common Common Common Common Common Common
C C C C C C C C C C C B C C C C C C C C C B B B C C C C C C C C C C C C B C C C

Notes:

Q Quantity used per unit R Rank 6

BL PCB

LA900 FU900 FU901 Q950 Q951 SW700 SW701 T950
Lamp Fluorescent lamp Fuses Temperature fuse Temperature fuse Transistors Chip transistor Chip transistor Switches Switch Switch Transformer Inverter trans
8.76AD1P2-CA11 EYP-1BF102L EYP-1BF102L 2SD965-R 2SD965-R SKHHAL SKHHAL NT-04
Common Common Common Common Common Common Common Common

A C C B B C C B

Q Quantity used per unit R Rank 7

COMPONENT

Item 12-1 12-2 12-25 Code No. Parts Name Display plate BXM-K523 Adhesive tape A-K52 Adhesive tape B-K502 Switch knob A-K526 Upper case BXM-K523 Upper case BIM-K523 Speaker Tuning button A-K526 Ribbon K526 Battery spring C-K526 Battery spring D-K526 Side case A-K526 Side case A-K523 BL ass'y Fluorescent lamp Temperature fuse Flat cable A-K541 Battery spring A-K526 Battery spring B-K526 Linear PCB ass'y Rod antenna Lower case BAA-K526 Lower case BXM-K523 Battery cover A-K526 Battery cover A-K523 Stand A-K331 Stand A-K503 Rating plate BXM-K523 Display unit Screw Screw Screw Screw A-K334 Specification K440953-1 K451-5 K410903A-2 K311299-1 K110681A-7 K110681A-11 28-8F-03 K311318-1 K411841-1 K311313A-1 K311314A-1 K110691-1 K110691-2 K211111B*1 8.76AD1P2-CA11 EYP-1BF102L K411565-1 K311321-1 K411830-1 K340720*1 VR60114FA K110682-2 K110682-4 K211023-1 K211023-2 K310518-1 K310518-7 K440954-1 K340722*1 PS3 1.7X3.5 Bk BT3 1.7X4 Ni BT3 1.7X8 Bk K410096A-1 Applicable Common Common Common Common For U.S.A., Canada Others Common Common Common Common Common For U.S.A., Canada Others Common Common Common Common Common Common Common Common For U.S.A., Canada Others For U.S.A., Canada Others For U.S.A., Canada Others Common Common Common Common Common Common Q R 1 C X X X X X C X X X X X X B A C C X X B C X X X X C C X C C C C C

Q Quantity used per unit R Rank 8

EXPLODED VIEW

12-2 12-3

SCHEMATIC DIAGRAMS

LINEAR
Antenna External Antenna Jack Earphone Jack
Speaker 1 Audio Amplifier Circuit 13

IF pad DC in Batteries

IF detection Circuit

To Back Light

Display Voltage Generator Circuit

Power Switch

Tuning Voltage Generator Circuit 4

7 Power Supply Circuit

Chroma Circuit
Display Controller Circuit

To LCD

BACK LIGHT

WAVEFORMS

112 mV 0.8 V

600 mV

63.5 s

1 Q200 Collector

2 IC200 Pin 19

3 IC200 Pin 18

0.24 s

4 IC300 Pin 23

5 IC300 Pins 10, 11, 12

6 IC300 Pin 5

10 V 600 mV

7 IC300 Pin 4

8 IC300 Pin 1

9 Q111 Collector

100 ns

360 ns

0 Q111 Base

A IC700 Pin 17

B IC700 Pin 14

C Q806 Base

D IC700 Pin 12
8-11-10, Nishi-Shinjuku Shinjuku-ku, Tokyo 160, Japan Telephone: 03-3347-4926

MA0300271A

Basic Information for Casio Pocket Television

Vol.3 CIRCUIT OPERATION

Contents PAGE TELEVISION TRANSMISSION SYSTEM... 1 Color System.... 1 TV System.... 1 Channel System... 1 Details of Color System... 2 Details of TV System... 2 Details of TV Channel... 3 World TV Broadcast System... 5 Casio TV Model... 6 BLOCK DIAGRAM.... 7 VHF, UHF.... 7 Rod Antenna.... 7 PCB Ass'y.... 8 Display Ass'y.... 8 AD PCB... 9 Back Light.... 9 Power Supply.... 9 CIRCUIT OPERATION.... 11 Tuner....11 IC200.... 12 IC300....13 IC400....16 IC700....17 Tuning Operation....18 Adjustment... 19 Troubleshooting.... 20 Trouble example.... 28 SCHEMATIC DIAGRAM & WAVEFORMS.. 29 Waveforms.... 32
TELEVISION TRANSMISSION S Y S T E M
T h r e e Systems TV transmission systems are not the same throughout the world: Color system, TV system and Channel are different. The countries for which a particular model is suitable are indicated in the sales literature and instruction booklet supplied, and are printed on the box in which each television is packed. Color system There are three color transmission systems in the world: NTSC, PAL and SECAM. If the color systems are different, TV does not get in color. e.g. Color System PAL NTSC Color System SECAM PAL TV System M/M M/M TV System B/G,H B/G,H Channel System US US Channel System CCIR CCIR

UK(UHF), Ireland I MHz +6.0MHz

OIRT(2) K,K8 MHz +6.5MHz

France (UHF) L MHz +6.5MHz A3
USA M MHz +4.5MHz F3(+/-25kHz)
USA 625 (Argentina) N MHz +4.5MHz F3(+/-25kHz)
F3(+/-50kHz) F3(+/-50kHz)

A3: AM F3: FM

CCIR: International Radio Consultative Committee
OIRT Organization International de Radio diffusion Television
Details o f T V Channel 1 ) T V Channel In the United States, the low band of television stations occupies the frequency range 54 - 88MHz, with a small gap of 4MHz between channel 4 and 5. (This band - 72 to 76MHz - is used by other services.) Between the low-band and the high band stations there is a frequency space (88 - 174MHz) that is occupied by FM broadcasting and government and aircraft communications services. Channel 14, the first of UHF channels, occupies the band 470 - 476MHz, channel 15, 476 - 482MHz, channel 16, 482 488MHz, and so on, all the way up to 890MHz. Within this band, 470 - 890MHz (a total of 420MHz),70 television channels are accommodated. Like the UHF allocations, each UHF television channel is 6MHz wide. Japan VHF Channel
CH.NO. Video Frequency Sound Frequency IF 58.75MHz 54.25MHz 91.25MHz 97.25MHz 103.25MHz 171.25MHz 177.25MHz 183.25MHz 189.25MHz 193.25MHz 199.25MHz 205.25MHz 211.25MHz 217.25MHz 95.75MHz 101.75MHz 107.75MHz 175.75MHz 181.75MHz 187.75MHz 193.75MHz 197.75MHz 203.75MHz 209.75MHz 215.75MHz 221.75MHz

US VHF Channel

CH.NO. Video Frequency Sound Frequency IF 45.75MHz 55.25MHz 61.25MHz 67.25Mhz 77.25MHz 83.25MHz 175.25MHz 181.25MHz 187.25MHz 193.25MHz 199.25MHz 205.25Mhz 211.25MHz 41.25MHz 59.75MHz 65.75MHz 71.75MHz 81.75MHz 87.75MHz 179.75MHz 185.75MHz 191.75MHz 197.75MHz 203.75MHz 209.75MHz 215.75MHz

fs - fv =4.5MHz

fs - fv=4.5MHz

CCIR VHF Channel

CH.NO. Video Frequency Sound Frequency IF 38.90MHz 33.40MHz 41.25MHz 48.25MHz 55.25MHz 62.25MHz 175.25MHz 182.25MHz 189.25MHz 196.25MHz 203.25MHz 210.25MHz 217.25MHz 224.25MHz 46.75MHz 53.75MHz 60.75MHz 67.75MHz 180.75MHz 187.75MHz 194.75MHz 201.75MHz 208.75MHz 215.75MHz 222.75MHz 229.75MHz

fs - fv =5.5MHz

2) Channel System and Frequencies

VHF (MHz)

UHF (MHz)

4ch 62.25 5ch 85.25

5ch 175.25 6ch 168.25

12ch 224.25 12ch 216.25

21ch 471.25 13ch 471.25 21ch 471.25 24ch 25ch

5.5MHz

4.43MHz

PAL PAL PAL/SECAM

-/I D/I B/G,H

UK China/UK CCIR

6 MHz 6.5 MHz / 6 MHz 5.5 MHz
4.43MHz 4.43MHz 4.25/4.40MHZ

G H I J K L M N P Q R S

PAL PAL PAL SECAM NTSC PAL PAL PAL PAL PAL PAL PAL PAL PAL PAL SECAM SECAM PAL PAL PAL PAL PAL PAL SECAM
M/M N/N B/G L/L M/M B/G,H B/B B/G,H B/G,H,I B/G,H,I B/G,H,I B/G,H B/G,H B/G,H B/G,H B/G,H B/G,H I/I I/I I/I I/I D/D D/K K1/-
US US ITALY France US CCIR Australia CCIR CCIR/UK CCIR/UK Italy/UK Australia CCIR ITALY New Zealand CCIR Morocco Angora Ireland UK South Africa China O.I.R.T F.O.T.

625 625

4.5 MHz 5.5 MHz 5.5 MHz 6.5 MHz 4.5 MHz 5.5 MHz 5.5 MHz 5.5 MHz 5.5 MHz / 6MHz 5.5 MHz / 6MHz 5.5 MHz / 6MHz 5.5MHz 5.5MHz 5.5MHz 5.5MHz 5.5MHz 5.5MHz 6.0MHz 6.0MHz 6.0MHz 6.0MHz 6.5MHz 6.5MHz 6.5MHz
3.58MHz 3.58MHz 4.43MHz 4.25/4.40MHz 3.58MHz 4.43MHz 4.43MHz 4.43MHz 4.43MHz 4.43MHz 4.43MHz 4.43MHz

Selector: I

4.25/4.40MHz 4.43MHz Selector: II

4.43MHz 4.25/4.40MHz

Selector: III

D/K M/M N/N K1/-

O.I.R.T US US F.O.T.
6.5MHz 4.5MHz 4.5MHz 6.5MHz
4.25/4.40MHz 3.58MHz 3.58MHz 4.25/4.40MHz Selector: M Selector: N

PAL PAL SECAM

SECAM Y PAL PAL PAL PAL SECAM SECAM PAL PAL PAL PAL SECAM
D/K B/G,H B/G,H B/G,H B/G,H B/G,H B/G,H I/I I/I I/I I/I L/L
O.I.R.T Australia CCIR Italy New Zealand CCIR Morocco Angora Ireland UK South Africa France
6.5MHz 5.5MHz 5.5MHz 5.5MHz 5.5MHz 5.5MHz 5.5MHz 6.0MHz 6.0MHz 6.0MHz 6.0MHz 6.5MHz
4.25/4.40MHz 4.43MHz Selector: I

4.25/4.40MHz

VHF, UHF VHF: Abbreviation for Very High Frequency. The sending out of radio waves at the rate of 30 to 300MHz, Producing good sound quality. UHF: Abbreviation for Ultra High Frequency. The sending out of radio waves at the rate of 300 to 3000MHz, Producing excellent sound quality.

Antenna VHF, UHF

Linear PCB

TU200 Tuner Q200 IF Amp.

IC200 Video Det. Sound Det. FM Det. AFT Circuit AGC Circuit VR Volume Control IC600 Audio Amp.

Speaker

Display ass'y
IC700 OSC. Display Control A-D Converter Auto-tuning Control

Common Drive

VR Brightness Control
IC800 Display Voltage Generator

Segment Drive

R o d A n t e nn a When the rod antenna is not properly adjustment, TV reception is not get a clear picture( picture moves up or down, disappears periodically, becomes fuzzy or blurred, is doubled, etc.). In this case, adjust angle and direction for best reception. Locations where TV reception is bad. Far away from broadcasting stations, among ferro-concrete structures or near mountains. Underground, in tunnels or in ferro-concrete buildings. Near high-tension wires, neon signs, or radio stations whose frequencies interfere. Near railroads, highways or airport. In trains or cars. -7-

Under poor reception conditions, the tuning indicator may continue to move without stopping because the auto tuner cannot detect weak broadcasts. In this case, use a commercially available external antenna or relocate the TV to a place where reception is better. The user usually damaged the rod antenna. We suggest that you stock this parts. Model CV-1 is used both as a earphone and an antenna. PCB Ass'y Linear PCB 1) Color tuner: TU200 Selects a desired radio wave and changes it to the video IF signal. 2) Video IF Amp.: Q200 Amplifies the video IF signal output from the tuner by 10 times. 3) Video Det./ Sound Det./ FM Det./ AFT/ AGC: IC200 Eliminates the carrier wave in the video IF signal, and pick up the video signal and the sound signal. Also, the sound signal is picked up from the sound IF signal by FM detection. Automatic fine tuning circuit for keeping the frequency of the oscillator in the tuner correct for best color picture by compensating for drift and incorrect tuning. Automatic gain control circuit for avoiding influence of receiving deterioration by wave strength. 4) Audio Amp.: IC600 Sound amplification. 5) Chroma Circuit: IC300 Generates the tricolor (red, green and blue) from the video signal. 6) Tuning voltage generator: IC500 Generates the tuning voltage from the tuning pulse (TU). PW PCB: Generates the power supply voltage. SUB PCB: Generates the power supply voltage. RD PCB: Selects a desired radio wave. Display Ass'y LCD Casio LCD television is used two type of LCD drive systems: HQM and Active matrix. 1) HQM ( Simple Matrix ) Scanning and segment transparent electrodes are arranged in closed way. To the scanning electrodes, the gate pulse is applied timesharing. The TV signal is changed into 4-bit or 3-bit data through A/D conversion (IC700), so that the TV signal can be handed with the LSI, and applied to the segment electrodes. Structure is simple and price is low, but contrast ratio is low. 2) Active Matrix Each picture element electrode is controlled by a transistor. To the gate electrodes, the gate pulse is applied timesharing, like the HQM. I f the gate pulse is applied, the transistors are in operation and voltage is applied between the picture electrodes and common electrodes and the liquid crystal reacts allowing the light to transmit. Structure is complicated and price is high, but contrast ratio is high.
(1) High Quality Matrix Y1 Y2 Y3 Y4 Xn
(2) Active Matrix Y1 X1 Y2 Y3 Y4

X1 X2 X3 X4 X5

Back Light: It produces light and allows the LCD to be seen. A fluorescent lamp is used this back light, and the life of this unit is to be 1,500 hours. Power Supply: 3-way power supply system. Batteries - AA-size or AAA-size (CV-1) dry batteries. Battery Life:
Type AlkalineLR6 (AM-3) Manganese R6 (UM-3) Life Approx.2 ~ 3 hours Approx.15 ~ 30 minutes

Field-strength is weak

BS VHF low and high channels selecting voltage. VHF(L) : Approx. 20V VHF(H): Approx. 0V
B T Tuning voltage input terminal. A channel corresponding to the direct voltage to this terminal is selected, and frequency conversion is performed.
TV-100B VHF(L) VHF(L) VHF(H) UHF UHF 2CH 7CH 14CH 1.0-2.8(V) 6.4-8.4(V) 2CH 5CH 6CH 17.2-18.8(V) 4CH TV-100C 1.3-3.3(V) 6.5-8.5(V) 6.1-8.1(V) 0.9-2.3(V)
VHF(H) 13CH 17.2-18.8(V) 12CH 17.2-18.8(V) 1.0-3.4(V) 21CH 69CH 22.4-23.6(V) 69CH 24.4-25.6(V)

Field-strength is strong

Tuner Voltage BV: Power voltage for inner VHF circuit. BU: Power voltage for inner UHF circuit. BM: Power supply for internal mixer.
VHF(L) BV Approx. 4V 0V Approx. 4V 0 - 25V Approx. 20V 1.0 - 3.0V BU BM BT BS VHF(H) Approx. 4V 0V Approx. 4V 0 - 25V 0V 1.0 - 3.0V UHF 0V Approx. 4V Approx. 4V 0 - 25V 0V 1.0 - 3.0V

Video IF Amp.

Video DET

Video Amp.

AGC for Tuner

AGC for IF

AGC Amp. AGC voltage

AGC DET

Noise elimination

AGC voltage

I C 0 V i d e o D E T. , S o u n d D E T. , F M D E T. , A GC , M U T E. Eliminates the carrier wave in the video IF signal , and picks up the video signal and the sound IF signal. Also the sound signal is picked up from the sound IF signal by FM detection and controlled its volume by MUTE voltage. To IC300 SIF trap
Video signal + Sound IF SIF trap removes the sound IF. Discriminator Picks up the sound signal.
SYNC. SEP Picks up the synchronizing pulse from the video IF signal. IF AGC DET. RF AGC Video DET.

Sound signal

FM DET.

Video AMP.

ATT Buffer Limiter

1st and 2nd AMP.

I F signal input VIF V i d e o detection
SIF filter picks up the SIF from video signal.

Carrier wave

SIF Demodulation Coil connected to pin no. 19 and 20 determines the tuning point of the LLD detection, and must be matched with the intermediate frequency.
Automatic f i n e tuning Model AFT voltage AFT block generates the AFT voltage TV-100 2.5 +/-0.2V (direct voltage ) with a difference of TV-480 1.7 +/-0.2V frequency between the IF and input signal from the tuner. Audio Signal
Video Amplifier SIF filter Sound Takeoff

Video signal

Sound IF
SIF filter removes the fs-fv MHz sound component from sound IF signal.
Limits the amplitude of its output signal to some predetermined threshold level.

Limiter-Amplifier

The sound is cut off during tuning. Audio signal is cut when pin no. 14 receives GND level.

ATT Audio Amplifier

Picks up the sound signal from FM modulated signal.

Y/C Separator Chroma Trap 4.43MHz Band pass filter Sync SEP. Luminance signal Contrast adjust

Color signal

Contrast adjust Blue B Matrix B-OUT Green

PIX ACC Chroma OUT

PAL/SECAM SW ACC DET Sync signal Burst GP

G Matrix

G-OUT Red
R Matrix 0 and 180 PAL-SW 90 Sub carrier OSC
R-OUT R-Y B-Y Automatic Phase Control

Killer

Bell filter 4.28MHz

Horizontal sync SECAM

line identify ID F/F

Blanking signal

B-Y signal Quadrature 4250000Hz coil 4.25MHz 4.25MHz

Cleaning

Limiter
line change over interlock switch SECAM direct to switch(non-delayed signal) SW Gate SW

limits the amplitude

Picks up the SECAM color signals (B-Y, R-Y) by FM detectors Sub carrier frequency R-Y signal 4406350Hz

R-Y DEM 4.406MHz

One delay line through one delay line(delayed signal)

Quadrature coil 4.4MHz

It is difference of SECAM , NTSC and PAL that the frequency of R-Y and B-Y signal are demodulated and transmitted reciprocally in order on every line. The demodulation of signal SECAM is separated from two systems. One system is led direct to the line change over interlock switch circuit, another system is led to the switch circuit through one delay line. The switch circuit changes over the delayed signal of a term scanning line and non-delayed signal, takes out two color different signal. By detecting in each FM, R-Y and B-Y signal are gotten. -15-
IC400 Tuning Voltage Generators IC400 has 3 circuits for converting pulses to voltages, selects one of VHF-L, VHF-H or UHF, and causes the tuning voltage to be output from OUT terminal.
OUT U/V H/L SW on L L H H L H L H S3 S2 S1 S6 S5 S4 Current Source S2, S5 S3, S6 S1, S4 S1, S4 TU SW on L H S7 S8 S8 S7 BT IN

BS GEN. CODE CONV.

Vref GEN.

UHF VCC

H/L BS
U/V UHF / VHF channels switching signal. Input 4V with setting the select switch to UHF. H/L VHF low / high channels switching signal. GND level when the indicator is VHF low channel. Approx. 4V when the indicator is VHF high and UHF channel

VHF low / high channels switching signal. Approx. 20V when the indicator is at VHF low channel.
TU Tuning pulse being output from IC700.

TU pulse

BT Tuning voltage. Tuning pulse is converted into a DC voltage by the IC400, and applied to the tuning voltage to the tuner.

BT voltage

U/V VHF L GND VHF H GND UHF Approx.4V
H/L GND Approx.4V Approx.4V

BS GND GND

BT Approx.0 ~ 20V Approx.0 ~ 20V
Approx.20V Approx.0 ~ 20V
When the Up or Down buttons is pressed, TU pulse becomes gradually narrower, and the tuning voltage BT is also gradually decreases.
VSS2 TE1 TE2 TE3 TE4 TE5TE6 M6 M5 M4 M3 M2 M1 AFT
AD2 AD1 B G R RLL VDD2 RHH

Test Control A/D

Mode Control

Key Switch Control

KDB KCB AVB UHF
Frequency Divider Channel Bar Control
Sweep Control Tuning Voltage UP/DOWN Counter

VLB Synchronism Judgment

M7 M8 M9 M10 PSi VSS1
Pulse Width Modulation D/A Frequency Separator

VDD1 C-S PD OSC1 OSC2

Phase Comparator Data Output Vertical Positioning Control Horizontal Positioning Control Frequency Divider Oscillator
CDB CFB CNB ECB SNB SCB STB HDB
SignalName D1 ~ D6 SNB CDB CFB CNB SCB STB ECB CK1, CK2 PD C-S HDB VDD1 MTB TU
Function Displaydata output terminal. Data latch signal. Scanning start signal. Voltage changeover signal. Scanning Signal shift lock signal. Brightnessmodulation pulse control. Sampling start signal. Control the segment drive terminal. "H" level during no display. Clock pulse output terminal. Clock pulse adjustment terminal. Sync pulseinput. HorizontalSync signal input. VDD voltage input. Mute control terminal. Tuning control pulse output.
SignalName VLB UHF AVB KCB KDB AFT M1 ~ M10 TE1 ~ TE6 R, G, B RLL RHH PS1 VSS1 output.
Function VHF High/Low channel select signal VHF/UHF selectsignal. Key input. Key input. Key input. AFT voltage input terminal. Mode select signal input terminal. Test terminal. Color signal. Low level voltage input terminalof video signal. High level voltage input terminalof video signal. Mode control signal. Power supply voltage input.
OSC1, OSC2 Oscillatorcontrol terminal.

Tuning Operation (NTSC)

UP or Down button
PD OSC1,OSC2 Horizontal Positioning Control Vertical Positioning Control

TO LCD

Oscillator
Synchronism Judgment A/D Convertor Data Output
Frequency Separator Phase Comparator

Sweep Control

Channel Bar Control VCC1 Back Light Circuit Back Light
Pulse Width Modulation TU BU
MTB Tuning voltage control VLB H/L H/L Mute Control Power Switch UHF UHF or VHF VHF

Power Supply Circuit

BS Generator

BT Generator

Batteries or AC Adaptor Antenna
VHF/UHF RF AMP. UHF Tuning Circuit Local Oscillator Local Oscillator IF AGC

VHF/UHF Input Circuit

VHF Tuning Circuit

TUNER IC200

UHF Mixing Circuit

VHF Mixing Circuit

IF AMP.

SAW Filter

Video DET.

2nd AMP.

1st AMP.

SIF Filter

FM DET

SIF Trap

SYNC. SEP

Buffer

3.58MHz Trap

Contrast Adjust

Color Adjust

B-Y Demodulator

Y Mixer Blue AMP.

Band pass Filter

Band AMP.

Burst AMP.

Hue Adjust

Y Mixer Green AMP.

R-Y Demodulator

Y Mixer Red AMP.

3.58 MHz OSC
Adjustment Casio gives another through adjustment before TVs are put on the market. There's usually no need for you to adjust the TVs except VCC voltage setting when repaired the power supply circuit and VCOM adjustment whenever replaced the TFT LCD. The other adjustments, it is necessary to have the expensive equipment's. When appropriate equipment's are not available, we recommend to replace the Linear PCB ass'y.
The full details of adjustments, refer to each of service manuals. Main Adjustment Points VCC Voltage Setting Outline Set the voltage VCC. If set value is wrong, malfunction or increasing consumed current. Be sure to adjust it. Video Detection Coil Adjustment No reception is possible at all or the sensitivity is extremely bad when replaced IC200 or video detection coil, be sure to adjust the video detection coil. AFT Coil Adjustment No reception is possible at all or the sensitivity is extremely bad when replaced IC200 or AFT coil, be sure to adjust the AFT coil. Equipment Power supply Voltmeter Power supply Pattern generator Signal generator Oscilloscope Low-pass filter Power supply Pattern generator Signal generator Oscilloscope Voltmeter Power supply Pattern generator Signal generator Voltmeter IF levelmeter Power supply Pattern generator Signal generator Oscilloscope Power supply Pattern generator Signal generator Oscilloscope Power supply Pattern generator Signal generator Oscilloscope IF levelmeter Power supply Frequency Counter Power supply Pattern generator Signal generator Oscilloscope Photo diode

PD Voltage Adjustment

No synchronization is gained.

Contrast Adjustment

Make this adjustment when contrast is not good.

Replace audio amp.

Check the soldering around IC200. Replace IC200.
7. A certain button does not function

Check the switch.

Is switch defective?

Replace the switch.

Check the soldering around switch. Check the circuit between IC700 and switch. Replace IC700.
8. Automatic tuning doesn't stop.
Measure the collector waveform of IF amp. 20s Varies between 20 to 50mV 120mV Figure 1 Is the waveform like that shown in Fig. 1?
Are BM, BV and BU of tuner voltage 4 V?
Check the circuit between

switch and tuner.

Replace switch.
Check BS of tuner voltage in a channel of L and H of VHF.
Is BS voltage 21V at VHF L channel?
Is BS voltage GND level at VHF H channel?
Check the voltage at pin no. 10 (H/L) of MSC1169.

C -24-

Replace IC200.
Is the waveform at pin no. 18 of IC200 like that shown in Fig. 2 when the indicator passes the receiving 20s
Is the waveform at pin 19 and 20 of IC200 like that shown Fig. 3? 20s

Check the poor

soldering on all line of IC200 and MSC1169. Replace IC200.
0.5V Is AFT (at pin no. 17 of IC200) voltage 0 to 4V While Indicator moves? Figure 2 10mV Figure 3 Replace IC200.
Varies between 20 to 50mV
2V Figure 4 Is SyOUT (at pin no. 23 of IC200) like that shown Fig. 4?

Replace H300.

YES NO
Figure 5 Is the waveform of R, G and B like that Fig. 5 when the indicator passes the receiving channel ?

Is an AV jack OK?

Is the waveform of H300 like that shown Fig. 6?

NO YES

0.2V Figure 6

Replace AV jack.

Check the circuit between IC200 and IC300. Replace IC300.

5s Replace MSC1169.

Check BT of tuner voltage in a channel of VHF.

1V Figure 7

Is BT voltage 0 to 21V at VHF channel?
Is the waveform YES at pin no. 11(TU) of MSC1169 like that shown in Fig.7?
Does 4V appear at pin no. 9 (H/L) of MSC1169 at UHF?
Is the tuner voltage AGC 1.0 to 1.2V?

YES Check the circuit

between MSC1169 and IC700. Replace IC700. Replace tuner. Check the circuit between switch and MSC1169. Replace Switch.

IS H/L 4V at VHF L channel?
IS H/L voltage GND level at VHF H channel?

Replace MSC1169.

NO NO Check the circuit between
MSC1169 andIC700. Replace IC700.
Do C-S, AFT and R-G-B pulse appear on IC700?
Check the circuit between IC300 and IC700.
Is the waveform at pin no. 17 of IC700 (OSC) like that shown in Fig. 8?

5V Figure 8

Check the poor soldering on OSC b lock. Replace IC700.

Trouble example

TV-7 Symptoms No picture Causes FL replaced Temperature fuse replaced Power switch replaced Fuse replaced Battery replaced Battery replaced Battery replaced Defective speaker

No sound No tuning

TV-100 Causes FL replaced LCD replaced DC jack replaced Fuse replaced Poor soldering No sound Battery replaced Speaker replaced Poor soldering on IC Bright volume doesn't work Defective R825 Picture all green Short circuit joint on lead of capacitor C105 Indicator does not stop Poor soldering joint on lead of capacitor C303 Poor soldering joint on terminal pin 17 of IC700 Broken resistor R703 Defective capacitor C205 & C808 Defective F200 No tuning when the RF signal is Defective IC200 under 55dB Tuning is OK, but erratic display Defective capacitor C205 & C808 Indicator does not stop Defective capacitor C205 & C808 when the RF signal is strong No picture Symptoms
TV-160 Symptoms No picture Fuse replaced Battery replaced LCD replaced Speaker replaced Battery replaced LCD replaced Speaker replaced LCD replaced Speaker replaced LCD replaced FL replaced Causes
No sound Indicator does not stop Specific channel does not receive
Poor reception or picture dark
SCHEMATIC DIAGRAM & WAVEFORMS NTSC

AV Jack

IC200 Video DET., Sound DET., FM DET., AGC, AFT and Mute
BU EXT Jack UHF input circuit UHF RF Amp. UHF tuning circuit UHF local oscillator UHF mixing circuit VHF input circuit VHF RF Amp. VHF tuning circuit VHF mixing circuit IF output BS(0/20V) VHF local oscillator Power switch BU(4V) BV(4V) OUT IC400 Tuning voltage generator AMP. S3 S2 S1 S6 S5 S4
U/V H/L SW ON L L S2, S5 L H S3, S6 H L S1, S4 H H S1, S4 TU SW ON L S7 H S8
3 AFT 5 SYNC. SEP 1 IF Amp. 1 SAW filter 2 F200 IF AGC DET. VIDEO DET. LLD 2
4.5MHz FM detection 4.5MHz

6 Speaker

FM DET. ATT VIDEO AMP.
Amp. Earphoen Jack BUFFER
2nd AMP. RF AGC (Forward) 1st AMP.

BT(0 21V)

LIMITER
BV VCC2 AGC 1.0 3.0V SIF filter 4.5MHz

IC700 OSC, A-D converter, Display control Auto-Tuning control
S8 AMP. S7 BT VSS2 TE1 TE2 TE4 TE6 TE3 TE5 M6 M5 M4 M3 M2 M1 AFT Key switch control KDB KCB AVB UHF 3V

Test control

Mode control

AFT control

CODE CONV. U/V Power supply circuit H/L

BS GEN. BS 12

Current Source Vref GEN. TU Vref
A/D Frequency divider Channel bar control Sweep control Mute control Synchronism judgment Frequency separator MTB
Tuning voltage Up/Down counter Pulse width modulation D/A

Fuse Power Jack

IC300 Croma circuit

FSC APC ACC TINT CIN

11 G R 10 B C-SY Mode control Phase comparator Data Output Vertical positioning control Horizontal positioning control Frequency divider C-S PD VDD1 Oscillator OSC1 OSC2 IC702 D1D2 D3 CDB SCB CNB SNB HDB STB CK1 CK2
CK1 CK2 STB SNB S1 C1 D1~D3 S359
ACC Color R-Y DET. Batteries APC TINT BURST GATE
MATRIX (CONTRAST) G-Y DET. B-Y DET.
GATE GEN. VCO VXOUT 7 KILLER YIN 8 PIX CLAMP Cont OUT 9 BGPW

D4 D5D6 VC 4V

CDB CFB CNB

X'tal VXOF Killer F KO

PIX Cont

CK1 CK2 STB SNB D4~D6

BU EXT Jack UHF input circuit UHF RF Amp. UHF tuning circuit UHF local oscillator UHF mixing circuit VHF input circuit VHF RF Amp. VHF tuning circuit VHF mixing circuit IF output BS(0/20V) VHF local oscillator Power switch BU(4V) BV(4V) BV VCC2 AGC 1.0 3.0V BT(0 21V)

VHF L 20V VHF H, UHF 0V

4.5, 5.5, 6.0 or 6.5MHz SIF trap 3 AFTC LLD LLD 2 AFT VIDEO

4.5, 5.5, 6.0 or 6.5MHz

Ceramic discriminator
SYIN AFT IF AGC SYOUT ADJ SYNC. SEP 1 IF Amp. 1 SAW filter 2 F200 IF AGC DET.

SIF OUT

FM detection FMD ATT FM DET. ATT
6 AUDIO Speaker Amp. Earphoen Jack
AFT VIDEO DET. VIDEO AMP. 2nd AMP.

BUFFER

RF AGC (Forward) IF AGC OUT IF AGC RF AGC IN IF IN

1st AMP. IF IN SIF IN

SIF filter 4.5, 5.5, 6.0 or 6.5MHz

AMP. S3 S2 S1 S6 S5 S4

U/V H/L SW ON L L S2, S5 L H S3, S6 H L S1, S4 H H S1, S4

S8 AMP. S7

TU SW ON L S7 H S8
TE2 TE4 TE6 TE1 TE3 TE5 M6 M5 M4 M3 M2 M1
AFT Key switch control KDB KCB AVB UHF

BS GEN. BS

VHF L 0V VHF H, UHF 20V 12
4.43MHz Chroma trap IC300 YIN 8 PIX IDF KIL.O KIL.F

KILLER IDENT

11 CIN COLOR
SYNC SEP. 10 G G-OUT R R-OUT CONT B OUT HD C-SY CONT F/F
Mode control Phase comparator Vertical positioning control Horizontal positioning control Frequency divider C-S PD VDD1 Oscillator OSC1 OSC2 IC702 D1D2 D3 CDB SCB CNB SNB STB HDB CK1 CK2