Oki IP-6620 Maintenance Manual page 134

Press the OK button to confirm the execution.
>>ADJUSTMENT CHECK
EXECUTE OK?
You may press the CANCEL button to interrupt the printing.
>>ADJUSTMENT CHECK
EXECUTING...
(4) PH CHECK PATTERN
Select PH CHECK PATTERN with the Up and Down buttons, and then press the OK button.
>CHECK PATTERN
 PH CHECK PATTERN
Press the OK button to confirm the execution.
>>PH CHECK PATTERN
 PRINT HEAD : 1234567
You may press the CANCEL button to interrupt the printing.
>>PH CHECK PATTERN
 PRINT HEAD : 1 3
Move the cursor with the Right and Left buttons, and toggle a digit with the Up and Down
buttons.
A digit that has been toggled disappears.
Finish the selection and press the OK button.
Press the OK button to confirm the execution.
>>PH CHECK PATTERN
EXECUTE OK?
You may press the CANCEL button to interrupt the printing.
>>PH CHECK PATTERN
EXECUTING...
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OKI Data Infotech Corporation CONFIDENTIAL
Chapter 3 Maintenance Mode Functions and Operations
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