Sony XR-1780 E Model Service Manual page 21

• IC Block Diagram
– MAIN Board –
IC450 LC75372E
33 32
ROUT 34
RVREF
RFIN 35
+
RFOUT
36
–
+
RROUT
37
–
RVREF
38
VREF 39
LVREF
40
LROUT 41
LFOUT 42
LFIN 43
LVREF
+
LOUT 44
–
1 2
31 30 29 28
RVREF
RVREF
+ +
– –
LATCH
RVREF
+
–
LVREF
+
–
LVREF
LVREF
3 4 5 6
27 26 25 24 23
RVREF
+
–
RVREF RVREF
SHIFT
DECODER CONTROL
REGISTER
RVREF
LVREF
LVREF LVREF
LVREF
7 8 9 10 11
– 25 –
22 R2
21 R1
20 TEST
19 VSS
18 NC
CL
17
16 DI
15 CE
VDD
14
L1
13
12 L2