Canon Digital ELPH, Service Manual, Page: 43 / 166

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1. Functions of each unit
1.1 MAIN P.C.B. ASS’Y
1) CCD control.
2) CCD output signal processing.
3) Image processing (DIGIC III).
4) Recording to the memory card and playing back from it.
5) System control (DIGIC III).
6) LCD control.
7) Power supply driving.
8) Battery charge control.
9) Audio signal processing.
1.2 FLASH UNIT
1) Flash driving and charging.
2) Speaker.
1.3 OPERATION ASS’Y
1) Rear switches.
2) Signal transfer from the MAIN P.C.B. to the LCD UNIT.
3) Lens unit control.
4) Shutter, power switch, and battery cover opening/closing detection switch.
PowerShot SD750 / DIGITAL IXUS 75 PowerShot SD1000 / DIGITAL IXUS 70
1.1 MAIN PCB ASS’Y
1.3 OPERATION FPC ASS’Y
1.2 FLASH UNIT
1.1 MAIN PCB ASS’Y
1.3 OPERATION FPC ASS’Y
1.2 FLASH UNIT