Indoor Controller Block Diagram (Mcc-1720); In Case Of Connection Of Wired Remote Controller - Toshiba MMU-UP0091HP-E Service Manual

8-2. Indoor controller block diagram (MCC-1720)

8-2-1. In case of connection of wired remote controller

Indoor unit
#1 (Heder)
Indoor control P.C. board (MCC-1720)
DC20V
DC5V
DC12V
Drain
pump
Indoor
fan motor
Power circuit
DC280V
Wired header remote controller (Up to 2 units)
Display LCD
Display LED CPU
Remote controller
communication circuit
A B
Remote controller
communication circuit
Driver
MCU
Fan motor
control circuit
Schedule timer (weekly timer mode.)
Function setup Display LCD
Key switch
CN2
CN1
DC5V
Power circuit
∗1
EEPROM2
EEPROM1
TA sensor
TC1 sensor
TC2 sensor
MCU
TCJ sensor
Float input
HA
Bus communication
circuit
AC
synchronous
signal input circuit
L N
Uv(U1) Uv(U2)
Outdoor Unit
Power supply
220-240V~, 50Hz
208-230V~, 60Hz
- 83 -
LCD driver
Function setup
CPU
Key switch
DC5V
Power Secondary
circuit battery
#2 #3
(Follower) (Follower)
A B A
Same as left Same as left
Power Power
Supply Supply
Outdoor unit Outdoor unit
Max. 8 or 16 units are connectable
(depending on connection system).
*1 The schedule timer com be
connected. to only RBC-AMT***
B