Power Supply Circuit Board Description - Epson Stylus Pro 10000 Service Manual

EPSON Stylus Pro 10000/10000CF/10600

2.5 Power supply circuit board description

100V AC from the plug socket is supplied to the inlet and power supply board of this
printer through the power cable of this printer belonging.
The power switch is composing the sub power switch systems. The sub power switch
systems, as long as the power cable is jointed, also in the condition where the power
switch cut the power supply board is actuated with feeble power.
NOTE: Do not do the printer operation by on/off of power supply tap SW,
because the power supply is the structure that turns off after ink system
end sequence, without halting right away, even after this power supply
board turned off power supply SW.
The fuse is attached to the power supply board for overcurrent protection. This fuse
rating is shown to the list shown below.
Table 2-7. Fuse rating
Input voltage range
96 - 264 VAC
Operating Principles
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Fuse rating
125 V AC / 6.3A TBD
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Power supply circuit board description
There are 3 control signals among the C362MAIN board and power supply board. The
details are shown in the following table.
Table 2-8. Action explanation
Signal name
actuation
+28V /+42VREM_ON
(MAIN -> power supply)
halt
actuation
AC_OFF
(MAIN <- power supply)
halt
actuation
POWER_SW
(Panel / MAIN -> power
supply)
halt
Revision D
Function
It is controlled on/off by the C362MAIN board.
• When this terminal is short-circuited drive system
power supply 28VDC, 42VDC become active.
• When this terminal is released (=L),it is done drive
system power supply 28VDC, 42VDC become
0VDC.
• The 5VDC power supply is not controlled by this
terminal.
Power supply SW turns ON and the power supply
board unit starts and each output becomes active.
After that the "H" signal is sent to the C362MAIN
board.
Power supply SW turns OFF and when became
unactive that each power supply board unit output or
the input voltage fell below the rated voltage value
the "L" signal is sent to the C362MAIN board.
It is jointed to power supply SW of the panel unit.
• SW is ON condition and this terminal is short-
circuited. the power supply board becomes an
operating state.
• SW is OFF condition and this terminal is released.
the power supply unit becomes off, after the
operating state is maintained several seconds to
several minutes.
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