Read Sony XM-554ZR Service Manual online
14
14
XM-554ZR
XM-554ZR
• IC Block Diagram
IC903 µPC494GS (AMP BOARD (2/2))
OSC
REF 5V
ERROR
ERROR
0.1V
Q1
Q2
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
NON
INV
VREF
VCC
C2
E1
E2
OUT
+IN
-IN
COMPEN
CT
RT
C1
GND
TIME
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