Toshiba MMU-P0121H Service Manual page 111

3-7-1-2. Indoor control block diagram (MCC-1361 : Main P.C. board)
2-way air discharge cassette, Concealed duct type
transformer
Power supply
Ø1,
220–240V, 50Hz
200V, 60Hz
6.3A
L
N
MF-C
Fan
motor
Power/motor P.C. B
(MCC-1355)
Float SW
Louver
Drain pump
NOTE :
The P.C. board of the indoor unit is divided into two boards for each function.
1. Main P.C. board (MCC-1361) Controller for entire units (PMV, louver, drain pump, etc.)
2. Power/Motor P.C. board (MCC-1355) Power supply circuit, fan motor drive part
Power
Power
circuit
12V 5V
Remote
controller
A B C
Indoor controller
Serial circuit
MCU
TMP87CM40N
(TMP87PM40AN)
Relay
driver
Main P.C. board (MCC-1361)
3-108
Refrigerating
cycle control
system
communication
BUS
communication
circuit
Multiplexer
Function/
Model set up
address SW
PMV
driving circuit
Function/Model
set up SW
LED display alarm
Indoor/outdoor
communication
P
Q
TA
TC1
TC2
Pressure
sensor
(High, Low)
PMV