Mitsubishi Electric CMB-WM108V-AA Service Handbook page 202

[ VIII Troubleshooting ]
Control Circuit
-3- Control Circuit
(1) Control power source function block
1) PURY-(E)M***YNW-A/PURY-(E)P***YNW-A
Noise filter board
TB1
AC Power source
(380 V-415 V)
Power-supply
terminal block
Surge protector
Control board
Solenoid valve
Four-way valve
drive circuit
72C
LEV
USB circuit
TB7
Terminal block for
transmission line
for centralized control
(24-30 VDC)
TB3
Indoor/outdoor
transmission block
(24-30 VDC)
TB1
AC Power source
AC 220 / 240 V
Terminal block for
power source
TB2
M-NET
transmission line
(Non-polar 2 wire)
TB2
AC Power source
AC 220 / 240 V
Terminal block for
power source
TB15
TB5
To next unit
(Indoor unit)
A, B
DC 17 ~ 30 V
A, B
DC 9 ~ 12 V
* MA remote controllers and ME remote controllers cannot be used together.
(Both the ME and MA remote controller can be connected to a system with a system controller.)
HWE1708A
Inverter board
Noise filter
Fuse
Fuse
Power-supply
detection circuit
Inverter-
Fuse
reset circuit
Relay/LEV
Microcomputer
3.3 V
Regulator
power supply
5 V DC-DC
power supply
converter
CN40
HBC controller
Terminal block
for transmission
line connection
DC 17 ~ 30 V
Terminal block
for MA remote
controller
Terminal block
for transmission
line connection
DC 17 ~ 30 V
ME remote
controller
MA remote
controller
Smoothing capacitor
Rectifier DCL 72C
5 V power supply
Power-supply board
18 V power supply
Rectifier
DC-DC
converter
17 V power supply
30 V power supply
DC-DC
converter
24 V power supply
DC-DC
converter
12 V power supply
9 V power supply
Transmission
Relay drive circuit
power-supply
detection circuit
Indoor unit
- 193 -
Power supply system (380-415 VAC)
Control system (5-30 VDC)
Compressor
Inverter
Inverter
drive circuit
Microcomputer
FAN board
Heat exchanger fan
Inverter
Fuse
Inverter
drive circuit
5 V power supply Microcomputer
GB