Hitachi IJ PH Service Manual page 146

6.2.7 Noise Fault C/M/S
Noise Fault C/M/S
Is the IJ printer
connected to its
dedicated ground?
Are the nozzle head
and IJ printer main
body insulated from
the other equipment?
Restart the IJ printer.
Does the noise
fault recur?
System reset with Rescue CF card.
Does the noise
fault recur?
Replace the EZJ124 or
EZJ93 board.
Does the noise
fault recur?
Replace the multiple
power supply.
Notice
Following momentary power supply voltage drop may also become a factor of the Noise fault C other
than the above. Please refer below for the correspondence.
Factor
(1) Momentary interruption of power supply
(2) Noise from a power supply for other power
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
6-9
Properly establish the
ground connection.
Ensure that the print head
and printer main body are
not in contact with the
other equipment.
Resume the
operation.
Correspondence
Power-on and confirm whether it is normal printing.
Separate the power supply cable of IJP from the power
supply cable for other power.
Power-on and confirm whether it is normal printing.