Hitachi PB - Phase Margin Test

2-8
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2.3.3 Phase margin test
●Perform the phase margin test of a nozzle.
●This test is performed for checking that
① whether or not the nozzle is in a printable state (whether or not clogging
is present) and
② whether or not ink is deteriorated.
●After the setting of a “standby” state, perform the work of this test as follows.
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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Select Phase margin test.
３Select the print timing from Button input or Sensor and the print data
from For test or Data to be displayed on the screen, respectively.
・When the “key input” is selected, the following figure is displayed and the printing
phase is sequentially printed from 0 phase to 15(f) phase every time Start printing
is pressed. (16 printings in total form one cycle)
With respect to the
Password protection,
refer to " 2.1 setting of
service personnel
maintenance mode".

Solenoidvalve/
pumptest
Adjustment/
operationalcheckout
LanguagechangeUnitinformation
Systemreset
System
environmentsetup
Download
Next
menu
Back
Maintenancemenu
Manual
Shut
down
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Status：ＸＸＸＸＸ

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
Back
Phasemargintest
 
Start
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 Printtiming[１](1:Buttoninput2:Sensor)
Decre-
ment
Incre-
ment
 Printdata[１](1:Fortest2:Datatobedisplayed)
Status：ＸＸＸＸＸ