NO
YES
YES
YES
NO
NO
YES
NO
YES
NO
+5V
(4)
(3)
(2)
(1)
Check for the points shown below.
Is the stop valve open?
Is the HPS connector properly connected to the main PC
board?
Does the high pressure switch have continuity?
Are the three
points above OK?
Rectify defective points, if any.
Mount a pressure gauge on the high-pressure service port.
Connect the Service Tool.
Reset the operation using the remote control,
put power off for ~ 10 seconds and then restart the operation.
Does the stop
due to malfunction (E3-01)
recur?
Is
the HPS
operating value normal (i.e.,
4.0MPa)?
Are the
characteristics of the
high pressure sensor
normal? (See
*1.)
Replace the HPS.
Replace the high pressure sensor.
Is the
pressure detected with
the PC board normal?
(See *2.)
Replace the main PC board.
· The high pressure sensor is normal, and the pressure detected with the PC board is also normal.
· The high pressure has really become high.
CHECK 1
*1: Make a comparison between the voltage of the pressure sensor (*4) and that read by the
pressure gauge.
(As to the voltage of the pressure sensor, make measurement of voltage at the connector,
and then convert it to pressure.)
*2: Make a comparison between the high pressure value checked with the Service Tool.
and the voltage of the pressure sensor (see *1).
*3: Make measurement of voltage of the pressure sensor.
Connector for high
pressure sensor (Red)
Make measurement of DC voltage between these wires. (*4)
Red
Black
White
Caution
Be sure to turn off power switch before connecting or disconnecting connector,
otherwise parts may be damaged.
Refer to “remove the causes by which the high pressure has become high”.
Micro controller
A/D input
High
pressure
sensor
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