Toshiba MMK-AP0074MH-E Service Manual page 24

Indoor unit
#1
Main P.C. board (MCC-1510)
Sensor display P.C. board
(MCC-819)
Sensor part LED
Louver
motor
Power
Indoor
fan motor
circuit
DC280V
Wired (Simple)
master remote controller
(Up to 2 sets)
Display
Function setup
part
LCD
Key switch
CPU
Display
part
LED
Remote
DC5V
controller
Power
communication
circuit
circuit
A B
Remote EEPROM
controller
communication
DC20V
circuit
DC12V
TA sensor
DC5V
TC sensor
CPU
H8/3039
TCJ sensor
Driver Driver
Outside
output
Start AC
BUS Remote
Alarm synchronous
controller
communication
Ready signal input
circuit A/B setup
Thermostat ON circuit
COOL
HEAT
Fan motor
FAN
control circuit
L N U1 U2
U1 U2
Outdoor unit
Power supply
1Ø, 220 - 240V, 50Hz
1Ø, 220V, 60Hz
Central remote controller
Display LCD
LCD driver
Function setup
CN2
CPU
CN1
Key switch
DC5V
Power Secondary
circuit battery
2
*
A B A B
Max. 8 units are connectable.
*1 In group connection, mount the
*2 Connection of weekly timer to sub
Same Same
as left as left
HA
1 2 3 1 2 3
Outdoor Outdoor
unit unit
central control remote controller to
group header unit.
remote controller is unavailable.