S U M M A RY OF PRO D U C T
4.3 Main PBA(SPL Model)
The Engine Board and the Controller Board are in one united board, and it is consisted of CPU part and print part in functional aspect. The CPU is functioned as the bus control, I/O handling, drivers, and PC inter- face. The main board sends the Current Image dlml Video data to the LSU and manages the conduct of Electrophotography for printing. It is consisted of the circuits of the motor (paper feed, pass)
driving, clutch driving,
The signals from the paper feed jam sensor and paper empty sensor are directly inputted to the main board.
FLASH MEMORY
ASICSDRAM
VIDEO CLK 
14.7456MHz
BUFFER
Main CLK 10MHz
USB PORT | MOTOR Drive IC |
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CN2 
CN1 
U20 U31 CN5 U25 | CN8 CN7 |
Service Manual