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Casio EV-680, Manual

The Casio EV-680 is a versatile electronic keyboard that offers a wide range of features for musicians of all levels. Easily access the user manual for free download at manualshive.com to maximize the potential of this instrument and unleash your creativity. Explore the possibilities with the Casio EV-680 today!

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SCHEMATIC DIAGRAMS

DISPLAY PCB (K671B-DP)

Chroma Circuit

Display Controller Circuit

To LCD

A/V Jack

To K671BR-TU PCB

Speaker

Earphone
Jack

Audio Amplifier Circuit

DC In

Display Generator Voltage Circuit

Summary of Contents for EV-680

Page 1: ...NC BU VIDEO1 AUDIO1 ANT TUNER TNS010US PRE AMP SAW FILTER VIF SIF M51348FP TFT CHROMA IR3Y29B TUNING BT AMP BA10358F AV JACK TFT LCD 383 234 EDTCA22QE0 INVERTER TRANS CPU93 SOURCE DRIVER SOURCE DRIVER...

Page 2: ...ent 7 VCOM DC coarse adjustment 8 TINT adjustment 9 VCOM DC adjustment Preparations 1 For the above 1 8 adjustments connect JACK P300 to the ground 0V 2 Set SW100 on UHF mode Adjustment And Test Point...

Page 3: ...9 PRINTED CIRCUIT BOARDS K671B DP PCB TOP VIEW K671B TU PCB...

Page 4: ...10 BOTTOM VIEW K671B DP PCB K671B TU PCB...

Page 5: ...11 DISASSEMBLY 2 Remove the stand and the battery cover 1 Remove the screw and the antenna Screw 3 Remove four screws and separate the side panel and the knob Screws Side panel...

Page 6: ...PCB Assy grey orange Screw 6 Remove the tune button and separate the tuner cover Remove four screws and separate the upper cover while paying attention to the hook Remove the speaker Screws Hook Scre...

Page 7: ...13 8 Remove the hook and disassemble the LCD Assy Hooks Hooks 7 Remove the hook unsolder the fluorescent lamp 1 and the LCD case 2 and then separate the LCD Assy Hooks 1 2 1 2...

Page 8: ...14 EXPLODED VIEW 21 20 27 31 22 23 24 25 13 12 10 7 6 5 4 2 1 9 8 29 28 26 18 2 14 30 3 11 3 3 3 8 15 16 17 17 18 18 19 S1 S2 S3 S4 S3 S3...

Page 9: ...6 SCHEMATIC DIAGRAMS DISPLAY PCB K671B DP Chroma Circuit Display Controller Circuit To LCD A V Jack To K671BR TU PCB Speaker Earphone Jack Audio Amplifier Circuit DC In Display Generator Voltage Circu...

Page 10: ...17 TUNNER PCB K671B TU To K671BR DP PCB Back Light IF Detection Circuit Power Supply Circuit Antenna IF Pad Power switch 27 0 32 0 V 11 0 13 0 V 7 0 8 0 V 16 0 14 0 V 5 00 0 02 V...

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