Deflecting Base Replacement Procedure - Hitachi IJ UX Service Manual

5.12 Deflecting Base Replacement Procedure

When the LED protection glass is damaged or when the deflection base is extremely
dirty and cannot be rid of the abnormality even after cleaning, it is necessary to replace
the deflection base. Perform it by using the following procedure.
１ Depressurize the printer.
２ Remove the head cover and heater cover.
３ Unscrew the the deflecting electrode setscrew and the charged electrode feed screw
on the surface of the deflecting base.
Perform
４ 「 5.7 APH board replacement（
５ Unscrew the high-voltage electrical power lines setscrews, the charged electrode feed screw
and high-voltage GND screw on the rear side of the head base.
The setscrews of the high-voltage electrical power lines are coated with silicon rubber.
Unscrew the screws by breaking the coating by a driver or the like.
６ Remove the deflecting base by unloosening the deflecting base setscrew and replace it
with a new one.
７ Perform the assembly in inverse procedure.
「Caution」・When mounting the rear cover and the deflection base, pay attention to
pinching of the lead and gasket.
・There are two kinds of length of the M2 screw. It may cause a failure
if mistakenly mounted.
・ Push the deflecting base against the arrow direction.
）
」１～４.
EZJ112A
Air purge tube
Heater
Recovery tube
Video wire
5-19
Charged electrode feed screw
M2X3
Nozzle setscrew
ﾄﾗ
High voltage GND screw
APH signal wire
High-voltage electrical power
M2X5
Deflecting electrode(-)
setscrew