Mitsubishi Electric Mr.Slim MUZ-A09NA Service Manual page 60

10-6. TEST POINT DIAGRAM AND VOLTAGE
1. Inverter P.C. board
MUZ-A09NA MUZ-A12NA MUZ-A15NA MUZ-A17NA
MUY-A15NA MUY-A17NA
Back side of unit
DB61
280V - 370V
DC
(-)
(+)
Output to
drive
compressor
(LDW,
LDV,
LDU)
Jumper wire for change
in defrost setting (JS)
Front side of unit
Fin temperature thermistor (RT64)
200
180
160
140
120
100
80
60
40
20
0
32 50 68 86 104 122 140 158 176
Temperature (°F)
208/230V AC Smoothing capacitor
DB61 (C63C)
Connecting wire with LEV
power P.C. board connector
(CN725) (CN724)
Defrost thermistor (RT61)
Ambient temperature thermistor (RT65)
100
90
80
70
60
50
40
30
20
10
0
-4 14 32 50
Temperature (°F)
Smoothing capacitor
(C63B)
Discharge temperature thermistor (RT62)
700
600
500
400
300
200
100
0
32 50 68 86 104 122 140 158 176 194 212 230 248
68 86 104
60
Smoothing capacitor
(C63A)
Output to drive
outdoor fan motor
(CN932)
Connector for indoor/
outdoor communication
(CN601)
Temperature (°F)
LED monitor
lamp
(+)
(+)
(+)
5V
GND