Hitachi PB - Charging Voltage Confirmation

2-7
2.3.2 Charging voltage confirmation
●This confirmation is performed in a state the IJ printer “stop” state.
●Attach the nozzle head cover for check.
●Before this confirmation, set “the speed follow-up” on the “user environment
setup” screen to “0: none”.
●Be sure to perform this confirmation when performing the board exchange
(EZJ93 and EZJ94/EZJ106).
１Press Adjustment/operational checkout at the second page of the
service maintenance screen.
When the Next menu are not displayed in the maintenance work menu, set to
the service personnel maintenance mode by the password protection.
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２Press Charge voltage confirmation.
 Since the voltage for the confirmation is output for 3 minutes, measure the TP12
on the EZJ 94 board / EZJ106 board using an oscilloscope and confirm that the
TP12 is in the range of DC 250 ± 15V.
With respect to positions of
the board and the test pin,
refer to "3.3.2 EZJ94 board /
EZJ106 board".
A
fter the completion of
the adjustment, the work
can be stopped before the
passing of 3 minutes by
pressing the Abort key.

With respect to the
Password protection,
refer to 2.1 setting of
service personnel
maintenance mode.
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Chargevoltage
【Waveformofchargevoltageconfirmation】

Back
Adjust./oper.checkout
Chargevoltage
confirmation
Heatingunit
confirmation
Levelsensor
confirmation
Excitation
adjustment
Manual
Shut
down

Phasemargintest


Auto-phasegain
adjustment

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Status：ＸＸＸＸＸ

Chargevoltageconfirmation
 
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Abort
 
 Executiontakes3minutes.
 Proc.status:Inprogress
Status：ＸＸＸＸＸ
If the charge voltage cannot be checked using this function because the IJ printer
is operating, use the following values for reference:
Charge voltage for Auto-phase : Approx. 11 V
Charge voltage for printing (least significant dot):
Approx. 70 V (character height: 99; particle use ratio: 03)
Charge voltage for printing (most significant dot):
Approx. 280 V (character height: 99; particle use ratio: 03)
However, the charge voltage for printing will vary depending on the particle use
ratio and printing conditions (character height setting and character width).
GNDLevel