Toshiba RAS-10YAV-E Service Manual page 22

For INDOOR UNIT
220–230–240 V
~ 50/60 Hz
Inddor unit
send/receive
circuit
Discharge
temp. sensor
Outdoor air
temp. sensor
Suction temp.
sensor
Heat exchanger
temp.sensor
Noise
Filter
MICRO-COMPUTER BLOCK DIAGRAM
MCC808 (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 16MHz
Input current Converter
sensor (AC DC)
Driver circuit Relay
of P.M.V. circuit
4-way
P.M.V.
valve
Rotor position
detect circuit
Rotor position
detect circuit
Gate drive
circuit
Gate drive
circuit
Over current
detect circuit
Over current
sensor
Over current Inverter
sensor (DC AC)
Over current Inverter
sensor (DC AC)
OUTDOOR UNIT
Outdoor
Fan motor
Compressor