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Casio JY-70B Service Manual & Parts List

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INDEX
JY-70B
JY-70C
JY-70I
JY-70N
(KX-516)
JUL. 1998
(without price)
(NTSC M / M)
(PAL B / G,H)
(PAL B / G)
(PAL B / G,H)
R

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  Summary of Contents for Casio JY-70B

  • Page 1 (without price) JY-70B (NTSC M / M) JY-70C (PAL B / G,H) JY-70I (PAL B / G) JY-70N (PAL B / G,H) (KX-516) JUL. 1998 INDEX...
  • Page 2: Table Of Contents

    CONTENTS Page SPECIFICATIONS ..................1 BLOCK DIAGRAM ..................2 PRINTED CIRCUIT BOARDS ..............3 PARTS LIST ....................7 EXPLODED VIEW ................... 11 SCHEMATIC DIAGRAMS ............... 12 WAVEFORMS ..................16...
  • Page 3: Specifications

    SPECIFICATIONS Item Specification 1. Power voltage DC 6.0 V JY-70B Approx. 3.6 W 2. Power consumption JY-70C/N/I Approx. 3.3 W JY-70B Approx. 600 mA 3. Current consumption JY-70C/N/I Approx. 550 mA JY-70B Approx. 3.5 hours 4. Battery life (with alkaline batteries) JY-70C/N/I Approx.
  • Page 4: Block Diagram

    VEE1 (– 6.03 ~ – 7.37 V) Brightness Control 1 — Color Tuner: TU200 TEAA1(JY-70B) / TEPE5-01(JY-70C/N/I) Selects a desired radio wave and changes it to the video IF signal. 2 — Video IF Amp.: Q200 2SC3082 Amplifies the video IF signal output from the tuner TU by 10 times (20 dB).
  • Page 5: Printed Circuit Boards

    PRINTED CIRCUIT BOARDS AD-PCB(JY-70B/C/N/I) Top View Bottom View — 3 —...
  • Page 6 L-PCB(JY-70B) Top View Bottom View — 4 —...
  • Page 7 L-PCB(JY-70C/N/I) Top View Bottom View — 5 —...
  • Page 8 BL-PCB(JY-70B/C/N/I) Top View Bottom View — 6 —...
  • Page 9: Parts List

    PARTS LIST JY-70B: NTSC (USA,Others) JY-70C: PAL (Others) JY-70I: PAL (Itary) AD PCB ASS'Y JY-70N: PAL (Europe,Germany) Item Code No. Parts Name Specification Applicable Connector 3502 2214 CONNECTOR 52435-2291 JY-70 common 3502 2425 CONNECTOR 52271-1490 JY-70 common 3502 2426 CONNECTOR...
  • Page 10 LINEAR PCB Item Code No. Parts Name Specification Applicable Diodes 2390 1183 DIODE / CHIP MA143A-(TX) JY-70B common 2390 1190 DIODE ERA15-01Y JY-70 common 2390 1470 DIODE / CHIP MA142WK-(TX) JY-70 common 7101 1194 DIODE / CHIP MA111(TX) JY-70B common...
  • Page 11 Item Code No. Parts Name Specification Applicable 6613 1891 PCB ASSY / LINEAR / A/D K341072*2 JY-70B common 6613 2866 PCB ASSY / LINEAR / A/D K341072*3 JY-70C/N/I common 6613 1895 CASE / UPPER /GREEN K240876*2 JY-70B/C/N common 6613 1896 CASE / UPPER / ORANGE...
  • Page 12 K340976-5 JY-70B 6612 9750 HOLDER / STAND K340977-1 JY-70 common 6609 9680 COVER / JACK K340237-1 JY-70B/I/N common 6608 0922 LABEL K411564B-2 JY-70B common 6613 1920 PLATE / RATING / GREEN K441267-2 JY-70B common 6613 1930 PLATE / RATING / ORANGE...
  • Page 13: Exploded View

    EXPLODED VIEW 18-4 18-1 18-2 18-3 — 11 —...
  • Page 14: Schematic Diagrams

    SCHEMATIC DIAGRAMS AD CIRCUIT AD-CIR-K0516 (JY-70B/C/N/I) Chroma Circuit Display Voltage Generator Circuit A/V Jack Tuning Voltage Generator Circuit Earphone Jack Speaker Display Controller Audio Amplitier Circuit Circuit — 12 —...
  • Page 15 LINEAR CIRCUIT L-CIR-K0516 (JY-70B) External Antenna Jack Tuner IF Detection Circuit IF Pad DC in Batteries Power Supply Circuit — 13 —...
  • Page 16 LINEAR CIRCUIT L-CIR-K0516 (JY-70C/N/I) External Antenna Jack Tuner IF Detection Circuit IF Pad DC in Batteries Power Supply Circuit — 14 —...
  • Page 17 BACK LIGHT CIRCUIT BL-CIR-K0516 (JY-70B/C/N/I) — 15 —...
  • Page 18: Waveforms

    WAVEFORMS 63.5 µs 63.5 µs 63.5 µs 1 Q200 Collector 2 IC200 Pins 19, 20 3 IC200 Pin 18 63.5 µs 63.5 µs 0.24 µs 4 IC300 Pin 23 5 IC300 Pins 10, 11, 12 6 IC300 Pin 5 8.5 µs 63.5 µs 63.5 µs 7 IC300 Pin 4...
  • Page 19 CASIO TECHNO CO.,LTD. Overseas Service Division 8-11-10, Nishi-Shinjuku Shinjuku-ku, Tokyo 160-0023, Japan...

This manual is also suitable for:

Jy-70cJy-70iJy-70n