Toshiba RAS-10GAVP-E Service Manual page 23

For INDOOR UNIT
~
220–240 V 50Hz
~
220 V 60Hz
Indoor unit
send/receive
circuit
Discharge
temp. sensor
Outdoor air
temp. sensor
Suction temp.
sensor
Heat exchanger
temp.sensor
Noise
Filter
MICRO-COMPUTER BLOCK DIAGRAM
MCC5009 (P.C.B)
M.C.U
• PWM synthesis function
• Input current release control
• IGBT over-current detect control
• Outdoor fan control
• High power factor correction control
• Inverter output frequency control
• A/D converter function
• P.M.V. control
• Discharge temp. control
• 4-way valve control
• Signal communication to indoor unit
High Power Clock
factor Correction frequency
circuit 4MHz
Input current Converter
(AC → DC)
sensor
Driver circuit Relay
of P.M.V. circuit
4-way
P.M.V.
valve
Current
detect
Gate drive
circuit
Current
detect
Gate drive
circuit
Inverter
(DC → AC)
Inverter
(DC → AC)
P.M.V. : Pulse Motor Valve
M.C.U. : Micro Control Unit
OUTDOOR UNIT
Outdoor
Fan motor
Compressor