REV.-A
2.3.2.9
Vx Voltage Supply Circuit
-.
{
When the
+24V
power supply line reaches 18.6 V (18 V + 0.6 V), transistors
Q30
and
Q23
turn on
and Vx
(+5
V) is output. On the other hand, if the +
24V
power
supply
line drops to 18.6 V or less,
Q30
and
Q23
turn off and the Vx voltage is shut off.
● Reset Circuit Power Supply
When the power is switched on or off, the circuit is reset so that it will not drive the printer until
the power supply becomes stable.
+24V
ZD 10
I
RDZOJSB2
R38
6.
2K
+ 5V
A
Q23
A1015
(
)
R71
10K
I
)
I-5
030
C1815Y
R69
3. 9K
+
d7
Figure 2-26. Vx Voltage Circuit
2-26
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