Functions Of Each Unit; Main Pcb Ass'y; Dc/Dc Pcb Ass'y; Flash Unit - Canon PowerShot A30 Service Manual

1. Functions of each unit

1.1 MAIN PCB ASS'Y

1) Driving the CCD Sensor.
2) Conversion of the image signal from the analog signal to the digital signal.
3) Controlling the power supply and the system by CPU. (Refer to Sections 2.1 and 2.2.)
4) Image processing, and reading and writing the image signal to and from the CF card using DSP.
(Refer to Section 2.2.2.)
5) LCD drive and amplification of the video and audio output. (A40 model only) (Refer to Section
2.2.3.)

1.2 DC/DC PCB ASS'Y

1) Power supply drive (DC/DC converter).
2) Backlight for LCD drive.

1.3 FLASH UNIT

1) Flash drive and charging circuit for the flash.
MAIN PCB ASS'Y
Fig. 1
2-1
CHAPTER 2. TECHNICAL DESCRIPTION
DC/DC PCB ASS'Y
FLASH UNIT