DSC-F1 (serv.man2) - Sony Digital Camera Service Manual (repair manual). Page 3

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The circuit operations of DSC-F1 are controlled by the following three microprocessors.

1

First microprocessor to start when the power supply is connected.
Mainly controls the power supply circuit, key input detection.
Remains ON as long as the power supply is connected to backup the clock.
When key inputs are detected, it sends serial data to the main microprocessor.

2

Performs control of operations such as shooting and playback, and processing of communications with the personal

computer. Starts when the unit starts operating. (OFF when the unit is in the stop state since no power is supplied.)

Due to the large volume of the program of the main microprocessor, the operation program is stored in the external

ROM (IC605 or IC606). The service mode program is also stored in the ROM.)

3

Microprocessor which mainly controls the CCD, camera section, etc. Like the main microprocessor, starts when the unit

starts operating.

Controls the camera state by communicating with the main microprocessor by serial data every frame (1/30 seconds).

Block which shoots and corrects images.

4

CCD which reads images. Part integrated with the lens block.

5

Converts RGB data read from the CCD to digital data, and performs camera signal processing. Performs detection of AE

and AWB.

6

Controls the iris (diaphragm) of the lens using the commands of the camera microprocessor.

During shooting, processes the image signals input from the camera, and displays on the LCD.
During playback, processes recorded image data input from the data compression and extension section, and displays on the

LCD.

7

During shooting, writes image data read from the CCD in the 4 Mbit memory, and outputs to the video circuit directly.

Also converts to the NTSC/PAL signal.

During playback, writes the compressed image data stored in the image memory (32 Mbit) in the 4M bit memory, and

converts to the NTSC/PAL signal, and outputs.

8

Converts Y/C signals into RGB signals, and displays on the LCD. After performing analog processing of the LPF, etc.,

converts to the video composite signal, and outputs from the video terminal.

During shooting, compresses image data, and records in the image memory.
During playback, extends image data recorded in the image memory, and sends to the LCD output section.

9

During shooting, JPEG-compresses image data read into the memory controller. The compressed data is stored

temporarily in the RAM (4 Mbit), and sent to the image memory (0) next.

During playback, the compressed image data recorded in the image memory (0) is JPEG-extended.