Samsung SCX-4100 specifications Main PBA

Summary of product

4.3 Main PBA

The Engine Board and Controller Board have been integrated into a single PBA. This consists of the CPU, printer scanner and line control functions. The CPU functions as the bus controller, I/O handler, motor driver and PC inter-face. The main board sends the Current Image Video data to the LSU and manages the Electrophotographic printing process. Circuits on the PBA drive include the main motor (paper feed, cartridge, fuser), clutch driver, pre-transfer lamp driver, heat-lamp driver, CIS driver, scan motor driver and fan driver.

The signals from the paper feed jam sensor and paper empty sensor are inputted to the main board from the power supply PBA.

FLASH	MEMORY (U69)
SDRAM	(U7)
REGULATOR	(3.3V) (U3)
GRAPHIC PROCESSOR	ASIC (U5)
REGULATOR	(1.8V) (U2)
TRANSCEIVER	(U9)

MOTOR DRIVER (U15)

ATTENUATOR	(U13)
EMI
CRYSTAL	(OSC2)
COMPARATOR	(U16)

SUPER 1284 (U11)

Service Manual

Samsung Electronics

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