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Casio EV-660 Block Diagram

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Page 2 ADJUSTMENT 1. Vcc2 adjustment, Vcc7, Vcc6, Vcc5, Vee1 voltage check 2. LLD coil adjustment 3. Free running frequency adjustment 4. VOM AC and VCOM DC coarse adjustment 5. Contrast, Bright adjustment 6. COLOR adjustment 7. BCC coil adjustment 8. VCOM DC adjustment Preparations 1.
Page 3 PRINTED CIRCUIT BOARDS TOP VIEWS Linear Back Light — 14 —...
Page 4 BOTTOM VIEWS Linear Back Light — 15 —...
Page 5 EXPLODED VIEW & " " "! " !" " !& & "! " " "# 5" " "" & — 16 —...
Page 6 SCHEMATIC DIAGRAMS LINEAR (EV-660C/I/N) Audio Amplifier Circuit Chroma Circuit Speaker Earphone Jack External IF Detection Circuit Antenna Jack Tunner Power Switch Power Supply Circuit 25.0 ~ 30.0 V 18.0 ~ 20.0 V 11.0 ~ 13.0 V AC Jack ± 0.02 V –12.0 ~ –10.0 V Display Controller Circuit —...
Page 7 LINEAR (EV-660D) Audio Amplifier Circuit Chroma Circuit Speaker Earphone Jack External IF Detection Circuit Antenna Jack Tunner Power Switch Power Supply Circuit 25.0 ~ 30.0 V 18.0 ~ 20.0 V AC Jack 11.0 ~ 13.0 V ± 0.02 V –12.0 ~ –10.0 V Display Controller Circuit —...
Page 8 BACK LIGHT — 21 —...