Epson PC AX Technical Manual page 38

PRINCIPLES OF OPERATION
2.2.2.3 +sV Supply Circuit
a) Basic Circuit
REV.B
The +sV circuit is shown in Figure 2-2-15.
The function of the +5 volts circuit is same as -SV circuit and -12V circuit.
L7
+
+
'--. . . . . . . . - --. . . . . . . . - ------------.----0
G ND
Tl
FIGURE 2-2-15. +5V SUPPLY CIRCUIT
b) Voltage Stability Circuit
\ - - - - - - " 4 . . . . - - - - - - - - - - 0
+
5
\ - - - - + - - - - - . - - - - - ( J
G
ND
5
GND
OUT
HAI6654
EI
R7
Re
e
Z4
If
RVl
2.2 K
R32
910
2-10
FIGURE 2-2-16. +5V VOLTAGE STABILITY CIRCUIT