Panasonic FZ-10 Service Manual page 9

FZ-10
Error Correction
This is a block for error correction, and transferring data and commands. A command data which comes from Main unit
goes to 1-chip microprocessor via the interface for CD-ROM. The data stored on a disk go through a data servo proces-
sor serially. Once the data will be stored in the data buffer and it will be checked and corrected if it is identified as a false
data. Then it go out to the CD-ROM interface.
Data Buffer
32K SRAM memory is used to store data from CD-ROM temporarily.
1-chlp Microprocessor
1-chip microprocessor is for processing commands from the main system.
Digital Servo Processor
Digital Servo Processor have some functions as optical servo( focus, tracking and traverse servo} process, digital pro-
cess (EFM modulation, error correction) and digital servo process for S.Motor. The optical servo will not require adjust-
ment for its gain, offset, and balance manually because it does all automatically. The Digital processing block provides
digital signal based on RF signal, and send to the error correction IC.
Motor Driver
As the analog control signal from digital servo processor, Motor Driver supply a traverse motor, focus actuator of pick up
unit and tracking actuator with electrical power.
S.Motor Control
As the control signal from digital servo processor ,S.Motor control circuit generates a signal to control the speed of the
S.Motor.
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