Oki ML620 User Manual

ML620/ML621 User’s Guide 85
PROBLEM CAUSE SOLUTION
The content of a single line is
printed in two lines.
The left and/or right margins are not
correctly selected.
Reselect the left and right margins correctly
in the application.
When continuous forms are
used, several blank lines
appear in the print-out.
Tear-off perforation spacing is selected. Cancel tear-off perforation spacing.
Broken and uneven vertical
lines.
May happen in bidirectional printing. Adjust the Print Registration.
Too large or small line
spacing.
Line spacing is not set correctly. Reset line spacing correctly in the application.
Split print
Blanks or deformed characters
appear in double-height type
or other extended types.
A paper feed error due to line feeding when
printing a single character.
Use the printer’s built-in fonts when printing
important documents or bills.
Improper cut sheet feed
No paper feed. Sheets are located off the paper guide. Load sheets with their left edges against the
paper guide.
Sheets are not loaded to the end. Load sheets to the end.
Continuous forms instead of
cut sheets are fed.
The printer is in the continuous forms
mode.
Eject the continuous forms and select the
printer’s cut sheet mode.
Paper distortion. Sheets are not loaded to the end, or they
are not inserted straight.
Load sheets to the end.
Paper with wrinkles, folds, or other defects. Change paper.
Paper not specied for the printer. Use paper types specied for the printer.
Unable to eject. The LF/FF key was pressed. Press the LOAD/EJECT key.

Oki ML620 Specifications

General

Color	-
Maximum resolution	288 x 72 DPI
Mean time between failures (MTBF)	25000 h
Sound pressure level (printing)	55 dB
Sound pressure level (quiet mode)	52 dB
Standard interfaces	USB 2.0
Windows operating systems supported	Windows 2000, Windows 7 Home Premium, Windows 7 Home Premium x64, Windows 7 Professional, Windows 7 Professional x64, Windows 7 Starter, Windows 7 Ultimate x64, Windows Vista Business, Windows Vista Business x64, Windows Vista Home Basic, Windows Vista Home Basic x64, Windows Vista Home Premium, Windows Vista Home Premium x64, Windows Vista Ultimate, Windows Vista Ultimate x64, Windows XP Home, Windows XP Home x64, Windows XP Professional, Windows XP Professional x64
AC input voltage	120 V
Dimensions (WxDxH)	438 x 375 x 191 mm