Applied Control And Function; Indoor Print Circuit Board - Toshiba MMD-AP0481HF2UL Service Manual

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