Sharp AE-X12PSR, Service Manual, Page: 7 / 73

SHARP(CHINA)INVESTMENT CO., LTD
2. OUTDOOR UNIT
CPU
Of
power
board
Filter
Unit-unit wiring
(AC power and
serial signals)and
serial signals)
DC +5V
Inrush current protection
Power
Bus capacitance
SPI Communication
Power supply
Power 15V
Function select(self
Fan driving circuit
Compressor selection
4-way valve
Function select (System
Power on relay driving circuit
4-way valve relay drive
Fan circuit
COMM
Indoor/outdoor control signal
PFC CPU
PFC Circuit
PFC IGBT Driving Circuit
Exhaus
t
Temp Detection
Compressor shell Temp
ODU Ambient Temp
ODU pipe Temp
EERPOM
Crystal oscillator of
EEPROM circuit
AC detection circuit
AC Voltage Detection
CPU
Of
Module
Board
Bus Voltage detection circuit
Reset circuit
Programmer port
IPM Module
PFC enable circuit
Compressor phase current detection circuit
Compressor over current detection circuit
LED
LED
Crystal oscillator of
Programmer port
LED AC Zero-crossing
Reset Circuit
DC +5V
Terminal of Compressor
20A FUSE
DC +5V2
Bus current detecting circuit
2-2