2-3
CHAPTER 2. TECHNICAL DESCRIPTION
2.2 Signal Processing
Fig. 3 Signal System Block Diagram
2.2.1 System Control
The CPU on the main PCB ass’y controls the EF lens (motor, shutter), operation switch receiver, USB
communication and flowing circuits.
• TG: Creation of the CCD drive pulse
• CDS, A/D: CCD signal processing and conversion of the digital data
• LCD Driver: Driving the LCD
• FLASH MEMORY: Firmware memory
• DSP: Picture processing
• RTC: Clock count for watch
• AF Support LED: AF auxiliary, self-timer and red-eye protection also serves as a lamp
• Electric Flash: Flash and charging circuit
CDS, A/D
LCD
Driver
CCD
Sensor
EF LENS
Motor
Driver
AF Support LED
FINDER LED
Electric FLASH
CF card
LCD
TG
RTC
FLASH MEMORY
DSP
CPU
SW
KEY
HD, VD
CLK
Drive Pulse
MAIN PCB ASS'Y
SDRAM
Buzzer
USB
Summary of Contents for PowerShot A100
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Page 94: ...3 42 CHAPTER 3 REPAIR INSTRUCTION 4 Make sure to appear err 0 on the bottom line ...
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Page 122: ...C CANON INC 2002 01 June 2002 3 3 OPR PCB ASS Y ...
Page 123: ...C CANON INC 2002 01 June 2002 3 4 RLS PCB ASS Y ...
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Page 126: ...PowerShot A100 A200 AF Chart ...
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Page 128: ...PowerShot A100 A200 AF Chart ...
Page 129: ...Dimensions 467 83mm 370 89mm 96 94mm 346 98mm 260 0mm 93 00mm ...