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TV-770B
(KX-503B)
(For NTSC)
JUN. 1996
TV-770B
INDEX
R

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Summary of Contents for Casio TV-770B

  • Page 1 (without price) TV-770B (KX-503B) (For NTSC) JUN. 1996 TV-770B INDEX...
  • Page 2: Table Of Contents

    CONTENTS SPECIFICATIONS ..................1 BLOCK DIAGRAM ..................2 PRINTED CIRCUIT BOARDS ............... 3 EXPLODED VIEW ..................5 PARTS LIST ....................6 IC AND TRANSISTOR LEAD IDENTIFICATION ........10 SCHEMATIC DIAGRAMS ................13 WAVEFORMS....................15...
  • Page 3: Specifications

    SPECIFICATIONS Item Specification 1. Reception channels VHF: 2 ~ 13 ch UHF: 14 ~ 69 ch 2. Power voltage DC 6.0 V 3. Power consumption Approx. 3.6 W 4. Current consumption Approx. 600 mA 5. Battery life (with alkaline batteries) Approx.
  • Page 4: Block Diagram

    BLOCK DIAGRAM Antenna IC200 TU200 Q200 IC600 Speaker Video VR600 Sound Det. Audio Tuner IF Amp. Amp. AFT Circuit Volume AGC Circuit Control IC500 IC300 Tuning Voltage Common Chroma Generator Driver Circuit IC700 Osc. Display Segment Control Driver A-D Converter Auto-Tuning Control Q800~Q803, Q805, Q806...
  • Page 5: Printed Circuit Boards

    PRINTED CIRCUIT BOARDS TOP VIEWS Linear C305 H300 L103 R335 R305 VR301 C351 R336 C330 R306 C210 F211 C208 F221 F210 T200 R255 R256 R253 T201 F220 R236 C281 R222 R254 C263 C262 R261 C259 R209 C245 R257 R212 CN710 D805 C800 R110...
  • Page 6 BOTTOM VIEWS Linear R645 VCC2-3 R116 R331 R330 C265 C642 C350 C348 R326 R610 C641 C347 R325 C250 R611 CP244 R641 C230 Q300 R225 R247 R210 C635 AUDIO CP590 C345 R706 C282 VIDEO HP210 R260 R258 R541 Q230 C246 R503 C530 R201 R208 D500...
  • Page 7: Exploded View

    EXPLODED VIEW LA900 — 5 —...
  • Page 8: Parts List

    PARTS LIST LINEAR PCB Item Code No. Parts Name Specification Diodes D100 2390 1176 Chip diode MA152WK-(TX) D110 2315 0166 Chip zener diode MA3047-L(TX) D150 2390 1176 Chip diode MA152WK-(TX) D152 2390 1176 Chip diode MA152WK-(TX) D155 2390 1302 Chip diode MA153A-(TX) D180 2390 1190 Chip diode...
  • Page 9 BL PCB Item Code No. Parts Name Specification Lamp LA900 3851 1918 Fluorescent lamp 3064BB-CA39 Transistors Q950 2253 0308 Chip transistor 2SD1119-R(TX) Q951 2253 0308 Chip transistor 2SD1119-R(TX) Switches SW700 3412 1029 Switch SKHHAL SW701 3412 1029 Switch SKHHAL Transformer T950 3012 1470 Inverter trans NT-07...
  • Page 10 MAIN COMPONENT Item Code No. Parts Name Specification 6611 0980 Display plate BXM-K503 K440797-1 6611 1010 Adhesive tape A-K503 K440801-1 6611 0870 Upper case BXM-K503 K140252-1 6020 7658 Battery spring B1 G513 P408A-1 6020 7666 Battery spring B2 G513 P409A-1 3831 0854 Speaker 28-8F-03 6611 0990 Cushion A-K503...
  • Page 11 The following electrical parts will be not supplied from CASIO. (For TV-770B) C100 10RE2-220 C756 GR40Y5V103Z50PT R307 ERJ-6GEYJ152V C105 6.3RC2-47MS-T36 C758 GR40Y5V104Z25PT R310 ERJ-6GEYJ474V C110 10RC2-33MS-T36 C760 GR40W5R222K50PT R322 ERJ-6GEYJ473V C112 6.3RC2-100MS-T36 C761 GR40Y5V104Z25PT R330 ERJ-6GEYJ302V C113 6.3RC2S-100-T36 C770 GR40Y5V224Z16PT...
  • Page 12: Ic And Transistor Lead Identification

    IC AND TRANSISTOR LEAD IDENTIFICATION IC/LSI IC200 IC300 M51348FP-T1 M52042FP IF AGC OUT IF AGC ADJ VIDEO IF AGC IN SyOUT SY IN VCXO OUT RF AGC SyIN ACCF AGCDL AFTC SY OUT VCXO IN VCCv HDIN COLOR IFIN Y CLAMP TINT IFIN VIDEO...
  • Page 13 IC700 MSM6625-02GSK-640F VSS2 TRANSISTORS 2SD1119 2SD601A 2SB709A 2SD1149-S 2SC4238 — 11 —...
  • Page 14: Schematic Diagrams

    SCHEMATIC DIAGRAMS LINEAR Antenna External Antenna Jack Tuner Display Generator Voltage Circuit Chroma Circuit IF Detection Circuit IF Pad DC In Power Switch Tuning Voltage Generator Circuit 34.2 ~ 41.8 V Earphone 3.95 V Jack -6.1 ~ -7.3 V Speaker Audio Amplifier Circuit Display Controller Circuit —...
  • Page 15 BACK LIGHT Notes: 1. All resistance values are indicated in "ohms" (k=10 ohms, M=10 ohms). µF). 2. All capacitance values are indicated in "µF" (p=10 3. All inductance values are indicated in "µH." — 14 —...
  • Page 16: Waveforms

    WAVEFORMS 63.5 µs 63.5 µs 63.5 µs 1 Q200 collector 2 IC200 pin 19 3 IC200 pin 18 0.24 µs 63.5 µs 63.5 µs 4 IC300 pin 23 5 IC300 pin 12 6 IC300 pin 5 63.5 µs 63.5 µs 130 ns 7 IC300 pin 4 8 IC300 pin 1...
  • Page 17 8-11-10, Nishi-Shinjuku Shinjuku-ku, Tokyo 160, Japan Telephone: 03-3347-4926...

This manual is also suitable for:

Kx-503b