Mitsubishi Electric MUZ-DW25VF-E1 Service Manual page 47

12-6. TEST POINT DIAGRAM AND VOLTAGE
1. Inverter P.C. board
MUZ-DW25VF MUZ-DW35VF
Back side of unit
DB61
250 V - 370 V DC
(-)
(+)
Fuse (F62)
15 A 250 V
Output to
drive
compressor
(LDW,
LDV,
LDU)
Output to drive outdoor
fan motor (CN932)
Front side of unit
Defrost thermistor (RT61)
Ambient temperature thermistor (RT65)
Outdoor heat exchanger
temperature thermistor (RT68)
100
90
80
70
60
50
40
30
20
10
0
-20 -10 0 10 20
Temperature (°C)
OBH906A
Fuse (F901)
T3.15AL250V
230 V AC
Fin temperature
thermistor/RT64
(CN642)
Ambient tem-
peraturer/ RT65
(CN643)
Discharge temperature thermistor (RT62)
800
700
600
500
400
300
200
100
0
0 10 20 30 40 50 60 70 80 90 100110120
30 40
Smoothing
capacitor (C62)
Outdoor heat
exchanger/
RT68 (CN644)
Temperature (°C)
47
Fuse (F801)
T3.15AL250V
Jumper wire for changing
LEV
defrost setting (JS)
(CN724)
Jumper wire for pre-heat
control setting (JK)
Discharge temperature
thermistor/RT62
(CN641)
Defrost thermistor/
RT61 (CN641)
Fin temperature thermistor (RT64)
200
180
160
140
120
100
80
60
40
20
0
0 10 20 30 40 50 60 70 80
Temperature (°C)
R.V. coil/21S4
(CN721)
Fuse (F701)
T3.15AL250V
Fuse (F61)
15 A 250 V
230 V AC
LED