Toshiba MMU-P0121H Service Manual page 131

3-7-3-6. IPDU P.C. board check positions (MCC-1342)
Power supply L1 phase
Power supply
L2 phase
Power supply
L3 phase
Compressor output
U phase
Compressor output
V phase
Compressor output
W phase
Power source
L1-N phase
IPDU compressor
high-pressure SW
system alarm
IPDU
MG-SW
Approx. DC 570V
UART communication
3-128
GND + 5V
Gate voltage check
DC25V
+ 12V