Hitachi RAM-71QH5 Service Manual page 55

6. Rotor magnetic pole position detection circuit
R601
18
C605
0V
19
C606
0V
20
C607
0V
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+5V
+12V
R604
R603
R602
3
C
7
1
6
D
5
2
4
E
11
13
10
9
14
8
12
IC4
0V
Fig. 6-1 Rotor magnetic pole position detection circuit
lnverter
W V
R502
R505 R504
R501
B
R605
R606
R607
R611 R610
R608
– 64 –
DC brushless motor
for compressor
U
R503
A
R609
0V