Functions Of Each Unit; Main Pcb Ass'y; Dc/Dc Converter Pcb Ass'y; Lcd Pcb Ass'y - Canon PowerShot G2 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) Video output. (Refer to Section 2.2.2.)
6) Microphone input and sound output. (Refer to Section 2.2.3.)

1.2 DC/DC CONVERTER PCB ASS'Y

1) Power supply drive (DC/DC converter).
2) Battery charging control circuit.

1.3 LCD PCB ASS'Y

1) Image display.
2) Backlight for LCD drive.

1.4 TOP MODULE UNIT

1) Operation switch, operation display and finder LED.

1.5 BUTTON PCB ASS'Y

1) Flash control.

1.6 FLASH UNIT

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