CASIO VM570B
Manual de Servicio

BLOCK DIAGRAM
1 A/V Jack Chroma Circuit Volume Control 4 IC400 Tuning Voltage Generator Common Driver IC300 2 VR600 Audio Amp. IC600 Speaker

LCD

3

IC700 OSC Display Control A/D Converter Auto-tuning Control

Segment Driver

VR800

5

Q800~Q801 Display Voltage Generator

Power Supply

VCC2 (4.0V) VCC6 (28 ~ 40V) VCC7 (48 ~ 72V) VEE1 (-8.4 ~ -5.6V)

Brightness Control

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� Chroma Circuit IC300 M51286FP Generates the tricolor of red, green and blue from the video signal. � Audio Amp. IC600 TA7368F Sound amplification � OSC, A/D Converter, Display / Auto-tuning Control : IC700 MSM6525B02 GSK-64D Converts the color signal into digital signal. Also generates the clock pulse for the display, and controls the display. � Tuning Voltage Generator IC400 MSC1169MS-K Generates the tuning voltage from the tuning pulse (TU) output of 6. � Display Voltage Generator Q800 ~ 801 2SD1149, 2SD601A-Rxz Generates the display voltages V0 ~ V4 from VEE1 and VCC7 outputs of the power supply.

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