Control Circuit Configuration - Toshiba MMU-P0121H Service Manual

3-7. CONTROL CIRCUIT CONFIGURATION

3-7-1. Indoor Unit
3-7-1-1. Indoor control block diagram (MCC-1361 : Main P.C. board)
4-way air discharge cassette type
Power
transformer
Power supply
Ø1, 220–240V, 50Hz
200V, 60Hz
L
N
DC12V
Power
circuit
DC5V
DC15V
CPU
TMP88CM49F
(TMP88PS49F)
Fan motor
control
circuit
Power/motor P.C. B
(MCC-1382)
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-1382) Power supply circuit, fan motor drive part
Remote
controller
A B C
Serial circuit
MCU
Communication
line
TMP87CM40N
(TMP87PM40AN)
Relay
driver
3-107
Indoor controller
BUS
communication
circuit
Multiplexer
Function/
Model set up
address SW
PMV
driving circuit
Function/Model
set up SW
LED display alarm
Indoor/outdoor
communication
Main P.C. board (MCC-1361)
Refrigerating
P
cycle control
system
Q
communication
TA
TC1
TC2
Pressure
sensor
(High, Low)
PMV