Microprocessor Block Diagram - Fujitsu AB12 Service Manual

4-2 MICROPROCESSOR BLOCK DIAGRAM

INDOOR UNIT
Power supply
ROOM THERMISTER(CN19)
PIPE INLET/IMEDIATE
/OUTLET THERMISTER(CN20)
OUTLET THERMISTER(CN21)
FAN FEEDBACK
(CN16)
DIP SW(SW1-4)
ROTARY SW(SW5,7,9)
FLOAT SW(CN15)
TEST(CN18)
(CN24)
COMMUNICATION
PWB.(CN26)
(CN24)
Wired remote
controller(CN17)
(CN25)
FILTER CIRCUIT
MICROPROCESSOR
POWER DETECTION
CIRCUIT
TEMPERATURE
DETECTION CIRCUIT
FAN ROTATION
READ CIRCUIT
SWITCH
READ CIRCUIT
FLOAT SWITCH
INPUT CIRCUIT
TEST INPUT
CIRCUIT
EXTERNAL INPUT
CIRCUIT
COMMUNICATION
CIRCUIT
EEPROM
FLASH WRITE
CIRCUIT
RESET CIRCUIT
OSCILLATOR
CIRCUIT
WIRED REMOTE
CONTROLLER
READ CIRCUIT
FLASH WRITE
CIRCUIT
RESET CIRCUIT
OSCILLATOR
CIRCUIT
MICROPROCESSOR
– 26 –
RECTIFICATION
DC-DC CONVERTER
SMOOTHING
5V,12V,14V
CIRCUIT
ACTUATOR
DRIVE CIRCUIT
SP MOTOR
DRIVE CIRCUIT
INDICATOR
DISPLAY OUTPUT
EXTERNAL OUTPUT
AUXILIARY
HEATER OUTPUT
COMMUNICATION
BUZZER OUTPUT
FAN MOTER(CN4)
DRAIN PUMP(CN5)
SV(CN6)
LOUVER(CN10,CN11)
EEV(CN14)
INDICATOR
DISPLAY(CN13)
(CN22)
AUXILIARY
HEATER(CN12)