Mitsubishi Electric Mr.Slim PUZ-SM100VKA Service Manual page 70

Outdoor power circuit board
PUZ-SM100YKA.TH
PUZ-SM125YKA.TH
PUZ-SM140YKA.TH
TB-P3
Connect to DCL
Diode module
OCH708
Brief Check of POWER MODULE
Note: The marks L1 , L2 , L3 , N1 , N2 , P1 , P2 , U , V and W
TB-U, TB-V, TB-W
Connect to the compressor (MC)
Voltage among phases:
10 V- 400 V AC
TAB connector
TB-P1
on X52CA
Connect
Connect to the RS resistor
to DCL
If they are short-circuited, it means that they are broken.
Measure the resistance in the following points (connectors, etc.).
1. Check of DIODE MODULE
L1 - P1 , L2 - P1 , L3 - P1 , L1 - N1 , L2 - N1 , L3 - N1
2. Check of DIP-IPM
P2 - U , P2 - V , P2 - W , N2 - U , N2 - V , N2 - W
shown in the diagram are not actually printed on the board.
DIP-IPM
TB-L1,TB-L2,TB-L3
Connect to the outdoor
noise filter board (L1-OU,
L2-OU, L3-OU)
400 V AC
70
L3OUT-L3IN
Lead connect
CN6
Thermistor <Heat sink> (TH8)
CN5
Detection of primary current (Connect
to the outdoor noise filter circuit board
(CNCT))
CN2 Connect to the outdoor
controller circuit board (CN2)
1-5: Power circuit board
→
Transmitting signal to the
controller board (0-5 V DC)
2-5: Zero cross signal (0-5 V DC)
3-4: Not used
6-5: 16 V DC
7-5: 16 V DC
[ 5 : – 1, 2, 6, 7 : + ]
CN4
Connect to the
outdoor controller
circuit board (CN4)