Toshiba MMD-AP0481HF2UL Service Manual page 30

Indoor unit
#1
Indoor control P.C. board (MCC-1403)
Power supply circuit
PMV
Indoor
fan
motor
Transformer
Main (Simple) wired remote control (up to 2 units)
Display
LCD
Display
CPU
LED
EEPROM
Remote control
communication circuit
A B
Remote
control
communication
circuit
DC20V
DC12V
DC5V
CPU
H8/3039
External
output
AC
BUS
In operation
synchronization
communication
Alarm
signal input circuit circuit
Getting ready
Thermostat ON
COOL
Fan motor HEAT
control circuit FAN
U1
L1 L2
U1
Outdoor
unit
Power source
208/230-1-60
Function setting
Key switch
DC5V
Power
supply
circuit
Wireless remote control kit
EEPROM
Remote control
communication
circuit
Sensor circuit Display section
TA sensor
TC1 sensor
TC2 sensor
TCJ sensor
HA
U2
Indoor/outdoor communication
U2
#2 #3
A B A B
Sameas left Sameas left
U1 U2 U1 U2
L1 L2 L1 L2
Power Power
source source
Outdoor Outdoor
unit unit