Samsung ML-1640 Service Manual page 24

U6(Jupiter 4E)
- It is a main CPU and an Asic of Jupiter4E which has a CPU core CLK with over 150MHz and a System bus 75MHz.
- It use 3.3V for operation voltage and I/O, It uses 75MHz for system bus CLK, Built in Flash Memory.
SDRAM
- Main memory. SDCLK is 75Mhz.
Regulator
- It Supplies the core voltage to CPU by converting 3.3V to 1.8V.
EEPROM(U8 : 93C66)
- It is an EEPROM with 12C method.
SMPS connector(CN7)
- It connects SMPS, supplies the power, and delivers the high voltage contol signal, etc. If a harness is not normally
connected to this connector, power cannot be supplied.
LSU connector(CN14)
- It connects a LSU.
BLDC Motor connector(CN9)
- It connects an main motor and drive a BLDC Motor.
HVPS connector(CN13)
- It connects a HVPS.
DCU connector(CN8)
- It interface a DCU-JIG
USB connector(CN10)
- It interface a the printer.
Service Manual
Product spec and feature
2-15
Samsung Electronics