Oki Printer ML 3390 User Manual

ML 3390/3391  
SEL  
SEL  
MENU  
LF  
Micro Feed  
Down  
SHIFT  
FF/LOAD  
EXIT  
POWER  
Micro Feed  
Up  
TEAR  
PRINT QUALITY  
GROUP  
ALARM  
P
ARK  
ITEM  
MENU  
QUIET  
TOF  
LQ  
SET  
COURIER  
ROMAN  
UTILITY  
PRINT  
GOTHIC  
PRESTIGE  
CHARACTER PITCH  
ORA  
SWISS TOR  
10  
17  
12  
20  
15  
PROP  
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Safety  
The printhead can get quite hot when it has been printing for  
a length of time. Do not touch the printhead until it has had a  
chance to cool off.  
Your printer has been carefully designed to give you years of safe,  
reliable performance. As with all electrical equipment, there are a  
few basic precautions you should take to avoid hurting yourself or  
damaging the printer:  
Do not use your printer near water, or spill liquid of any kind  
into it.  
Read the setup and operating instructions carefully. Be sure  
to save them for future reference.  
Be certain that your power source matches the rating listed  
on the back of the printer. If you are not sure, check with your  
dealer or with your local power company.  
Read and follow all warning and instruction labels on the  
printer itself.  
Your printer has a earthed, 3-pin plug as a safety feature, and  
it will only fit into a earthed outlet. If you can not plug it in,  
chances are that you have an older, non-earthed outlet; contact  
an electrician to have it replaced with a earthed outlet. Do not  
use an adapter to defeat the earthing.  
Unplug the printer before you clean it. Use only a damp cloth;  
do not use liquid or aerosol cleaners.  
Place your printer on a firm, solid surface. If you put in on  
something unsteady, it might fall and be damaged; if you place  
it on a soft surface, such as a rug, sofa, or bed, the vents may  
be blocked, causing it to overheat.  
The outlet into which you plug your printer must remain easily  
accessible at all times.  
To protect your printer from overheating, make sure no  
openings on the printer are blocked. Do not put the printer on  
or near a heat source, such as a radiator or heat register. If you  
put the printer in any kind of enclosure, make sure it is well  
ventilated.  
To avoid damaging the power cable, do not put anything on it  
or place it where it will be walked on. If the cable becomes  
damaged or frayed, replace it immediately.  
If you are using an extension cable or power strip with the  
printer, make sure that the total of the amperes required by all  
the equipment on the extension is less than the extension’s  
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rating. Generally, the total ratings of all equipment plugged  
into any one power line should not exceed 13 amperes. Do  
not exceed this unless you know that the power line your  
equipment is plugged into has a rating above 13 amperes.  
Do not poke anything into the ventilation slots on the sides of  
the printer; you could get a shock or cause a fire.  
Aside from the routine maintenance described in the manuals,  
don’t try to service the printer yourself; opening the cover  
may expose you to shocks or other hazards. Do not make any  
adjustments other than those outlined in the manual, you might  
cause damage requiring extensive repair work.  
If anything happens that indicates that your printer is not  
working properly or has been damaged, unplug it immediately  
and contact your Oki dealer for service. These are some of  
the things to look for:  
The power cable or plug is frayed or damaged.  
Liquid has been spilled into the housing, or the printer  
has been exposed to water.  
The printer has been dropped or its cabinet has been  
damaged.  
The printer doesn’t function normally when you are  
following the operating instructions.  
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Contents  
Print Mode: Control Panel Keys...................................... 12  
Selecting the Print Quality and Font ............................... 13  
Selecting the Character Pitch .......................................... 14  
Menu Mode: Control Panel ............................................. 14  
Entering and Exiting the Menu Mode ............................. 15  
Resetting the Menu .......................................................... 15  
Printing the Menu Settings .............................................. 15  
Summary of Menu Settings ............................................. 16  
Explanations of Menu Items............................................ 19  
Paper Park Feature ........................................................... 22  
Specifications................................................................... 23  
Index ................................................................................ 27  
Safety .................................................................................. i  
Maintenance....................................................................... 1  
Replacing the Ribbon Cartridge ........................................ 1  
Clearing Paper Jams .......................................................... 2  
Rear-Feed Jams ................................................................. 2  
Correcting Repetitive Rear-Feed Jams .............................. 4  
Single-Sheet Jams.............................................................. 6  
Cleaning the Housing ........................................................ 7  
Troubleshooting ................................................................. 8  
Using Your Printer ........................................................... 11  
Print Mode: Indicator Lights ........................................... 11  
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3. Remove and discard the used ribbon cartridge.  
Maintenance  
Replacing the Ribbon Cartridge  
Note: For the best results, use genuine Oki ribbons.  
1. Make sure the printer is turned OFF.  
2. Centre the printhead ().  
Caution! The printhead may be HOT!  
4. Unpack the new ribbon cartridge.  
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5. Install the new ribbon cartridge.  
Clearing Paper Jams  
Rear-Feed Jams  
1. Turn the printer OFF and use the platen knob to back the  
paper all the way out.  
A
6. Turn the knob () in the direction of the arrow to take up  
any ribbon slack.  
2. Open the access cover, and remove the pull-up roller  
assembly.  
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3. Remove any torn pieces of paper.  
6. Turn the printer on.  
4. Replace the pull-up roller assembly, and close the access  
cover.  
7. Press FF/LOAD.  
5. Reload paper.  
FF/LOAD  
Micro Feed  
Up  
ITEM  
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Correcting Repetitive Rear-Feed Jams  
If the paper keeps jamming, you probably have bits of paper  
stuck in the paper path.  
3. Fold some continuous-form paper over three times to  
make a page four sheets thick, load it on the tractors and  
close the covers.  
1. Perform steps 1 through 3 under “Rear-Feed Jams.”  
2. Grasp the paper separator (), lift it slightly, pull back  
on it, then swing it forward.  
4. Swing the paper separator over, and use the platen knob  
to draw the quadruple-thick page around the platen: this  
brings out any jammed bits of paper.  
TEAR  
PRINT QUALITY  
PARK  
QUIET  
HSD  
SET  
UTL  
TOF  
NLQ  
PRINT  
CHARACTER PITCH  
SSD  
10  
17  
12  
20  
15  
PROP  
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5. Remove the paper pieces, and use the platen knob to back 7. Replace the pull-up roller assembly, and close the access  
the paper out.  
cover.  
FF/LOAD  
Micro Feed  
Up  
TEAR  
PRINT QUALITY  
PARK  
TEM  
QUIET  
TOF  
HSD  
NLQ  
SET  
UTL  
MENU  
PRINT  
CHARACTER PITCH  
SSD  
10  
17  
12  
20  
15  
PROP  
8. Turn the printer on.  
6. Swing the paper separator over, reload regular paper, and  
lower the paper separator back into place.  
9. Press FF/LOAD.  
FF/LOAD  
Micro Feed  
Up  
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Single-Sheet Jams  
4. Remove any torn pieces from around the carriage.  
1. Turn the printer off.  
5. Reinstall the pull-up roller assembly, and close the access  
cover.  
2. Use the platen knob to back the jammed paper out.  
SEL  
SEL  
MENU  
LF  
Micro Feed  
Down  
SHIFT  
EXIT  
POWER  
FF/LOAD  
Micro Feed  
Up  
TEAR  
PRINT QUALITY  
ALARM  
GROUP  
PARK  
ITEM  
MENU  
QUIET  
TOF  
HSD  
NLQ  
SET  
UTL  
PRINT  
CHARACTER PITCH  
SSD  
10  
17  
12  
20  
15  
PROP  
3. Open the access cover and remove the pull-up roller  
assembly.  
6. Turn the printer on, and reload paper.  
SEL  
SEL  
MENU  
LF  
Micro Feed  
Down  
SHIFT  
EXIT  
POWER  
FF/LOAD  
Micro Feed  
Up  
TEAR  
GROUP  
PRINT QUALITY  
ALARM  
PARK  
ITEM  
MENU  
QUIET  
TOF  
LQ  
SET  
COURIER  
ROMAN  
UTILITY  
PRINT  
GOTHIC  
PRESTIGE  
CHARACTER PITCH  
ORA  
S
W
I
S
S
T
O
R
10  
17  
12  
20  
15  
PROP  
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Cleaning the Housing  
4. Reinstall the pull-up roller assembly, and close the access  
cover.  
You should clean the printer every six months (or after about  
300 hours of operation).  
Note: Never use solvents or strong detergents on the  
cabinet: they could damage the housing.  
1. Turn the printer off, and remove any paper from the path.  
2. Open the access cover, remove the pull-up roller assembly.  
3. Use a clean, dry cloth to dust around the carriage shaft  
and platen. Remove any loose pieces of paper.  
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Troubleshooting  
Problem: Nothing happens when I turn on the printer.  
Problem: I'm getting strange symbols, incorrect fonts,  
etc., when I try to print a document.  
Solution: Check the power cable connection the outlet and  
to your printer. If you are using a power strip,  
make sure it is turned on, and that the fuse has  
not blown nor the circuit breaker tripped.  
Solution: (1) Check to be sure that the printer driver you  
have selected in your software matches the  
printer emulation. (Press SHIFT and SEL  
keys, then press GROUP key: this will print  
a line showing the emulation you have  
selected.)  
Problem: The printer does not print when data is sent.  
Solutions: (1) Is the SEL light on? If not, press the SEL  
(2) If you have embedded any printer  
commands in your software, check to be  
sure that you entered them correctly.  
key.  
(2) Check that the interface cable is securely  
connected to both the computer and the  
printer.  
Problem: I've installed a new ribbon and the printing is  
smeared and streaked.  
(3) If you have the optional serial interface  
board installed, check to be sure that it is  
firmly seated in the printer.  
Solution: The ribbon shield is either loose or missing.  
Remove the ribbon cartridge and check the clear  
plastic ribbon shield: if it's loose, secure it in  
place, if it is missing, find it and reinstall it.  
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Problem: TheALARM light is on and the Character Pitch Problem: My word processor files don't print the way I  
15 light is flashing. have the menu and front panel set.  
Solution: This indicates a paper jam. Press the SEL key Solution: Before sending a file to the printer, many word  
and correct the paper jam situation ( see “Clearing  
Paper Jams” in this manual).  
processors send either an “initialization string”  
or an I-Prime signal to the printer.  
The initialization string contains codes that  
override the panel and menu settings. To change  
your printer to ignore the reset code, enter the  
Menu Mode, go down to the Set-Up group and  
change the setting for Reset Inhibit to Yes (see  
“Changing the Menu Settings” in this manual).  
Problem: TheALARM light is on and the Character Pitch  
10 light is flashing.  
Solution: This indicates that the paper lever is set at the  
wrong position for the paper you are trying to  
use: move it to the proper setting.  
The I-Prime signal will automatically override  
any front panel settings you have made. To  
eliminate this problem, enter the Menu Mode,  
go down to the Parallel Interface group and  
change the setting for I Prime to Invalid (see  
“Changing the Menu Settings” in this manual).  
Problem: The ALARM light is blinking.  
Solution: Try turning the printer off and then back on again.  
If the light still blinks, call for service.  
Problem: The printer needs paper, but the ALARM light  
is not on and I can't load the paper.  
Solution: Press and release the SEL key, then hold the  
SHIFT key and press the RESET (CHARACTER  
PITCH) key: this resets the printer.  
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Problem: The Print Quality and Character Pitch keys on  
the front panel won't work.  
Solution: The Operator Panel Function in the printer menu  
can be used to disable these buttons. If the printer  
is part of a customized system or if it is used by  
a number of people, the system manager may  
have used this option to make sure the printer is  
always set properly.  
Problem: Continuous-form paper is sticking to the paper  
separator.  
Solution: In cold dry weather, static charges can build up  
and make the paper cling to the paper separator.  
Try moving the paper guides together so that the  
paper rests on the guides rather than on the  
separator.  
Problem: Ink smears on paper.  
Solution: This may be caused by excessive printhead travel  
from the centring position when printing narrow  
columns. Set Centring Position to MODE 1. On  
ML3391 also try MODE 2. (See Menu Mode).  
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UsingYour Printer  
Print Mode: Indicator Lights  
PRINT QUALITY  
LQ  
COURIER GOTHIC  
ROMAN  
SEL  
SEL  
UTILITY  
ORATOR  
PRESTIGE  
FF/LOAD  
TEAR  
SET  
PARK  
QUIET  
TOF  
LF  
SWISS  
Micro Feed  
Down  
Micro Feed  
Up  
SHIFT  
MENU  
CHARACTER PITCH  
10  
12  
20  
15  
PRINT  
ITEM  
EXIT  
POWER  
GROUP  
17  
PROP  
ALARM  
MENU  
SEL .............. Glows = printer selected, ready to receive data  
Flashes = printer in Print Suppress Mode  
ALARM ... Glows = error condition exists:  
out of paper if no other lights are blinking  
Not lit = printer deselected (can't receive data)  
paper jam if 15 cpi light is also blinking  
paper lever is set to wrong position if 10 cpi  
QUIET ......... Glows = printer in Quiet state.  
light is also blinking.  
POWER ....... Glows = printer turned on.  
Blinks = error condition. Turn printer off, then  
on; if the light still flashes, contact your service  
dealer.  
PRINT QUALITY ..... Indicate print quality and font  
selected.  
10/12/15/17/20/PROP ..... Indicate character pitch selected.  
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Print Mode: Control Panel Keys  
PRINT QUALITY  
LQ  
COURIER GOTHIC  
ROMAN  
SEL  
SEL  
UTILITY  
ORATOR  
PRESTIGE  
FF/LOAD  
TEAR  
SET  
PARK  
QUIET  
TOF  
LF  
SWISS  
Micro Feed  
Down  
Micro Feed  
Up  
SHIFT  
MENU  
CHARACTER PITCH  
10  
12  
20  
15  
PRINT  
ITEM  
EXIT  
POWER  
GROUP  
17  
PROP  
ALARM  
MENU  
SEL ......... Selects/deselects printer. When held on power up,  
PRINT QUALITY ........... Selects the print quality and font.  
engages the Menu Mode.  
FF/LOAD ......................... Loads/ejects single sheet of paper;  
moves continuous-form paper to  
SHIFT ..... Press and hold while pressing another switch to  
engage the alternate function for that switch (e.g.  
“Micro Feed Down” for the LF key).  
print position.  
TEAR ................................ Moves continuous-form paper up  
LF............ Moves paper up one line: press and hold for  
repetitive line feeds. When held on power up,  
activates the Font Test.  
for tear-off or back down for  
printing.  
PARK ................................ Retracts continuous-form paper  
QUIET .... Turns Quiet Mode on and off. When held on  
from the path.  
power up, activates the Rolling ASCII Test.  
CHARACTER PITCH .... Selects the character pitch. Used  
with the SHIFT key to reset the  
printer.  
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Selecting the Print Quality and Font  
When Letter Quality is engaged, the lights indicate which  
font is selected:  
Important! Front panel settings for print quality and  
character pitch can be overridden by software  
commands. The lights will always reflect the  
printer's state.  
PRINT QUALITY  
COURIER GOTHIC  
ROMAN  
LQ  
UTILITY  
ORATOR  
PRESTIGE  
Press PRINT QUALITY to select:  
SWISS  
LQ: Letter Quality  
Highest quality, slowest speed  
Seven fonts  
Recommended for correspondence  
Courier: LQ and Courier lights on  
Gothic: LQ and Gothic lights on  
Orator: LQ and Orator lights on  
Prestige: LQ and Prestige lights on  
Roman: LQ, Courier and Gothic lights on  
Swiss: LQ, Orator and Prestige lights on  
Swiss Bold: LQ light on  
UTILITY:  
Medium quality, medium speed  
Gothic font only  
Recommended for internal documents and high-volume  
data.  
Note: To select High Speed Draft mode, set the Print Quality  
to UTILITY and the Character Pitch to 15.  
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Selecting the Character Pitch  
Menu Mode: Control Panel  
PressCHARACTER PITCH to select the width of characters  
in characters per inch:  
SEL  
FF/LOAD  
TEAR  
SET  
PARK  
QUIET  
TOF  
LF  
SEL  
10 cpi  
Micro Feed  
Down  
Micro Feed  
Up  
SHIFT  
MENU  
Recommended for standard text.  
PRINT  
ITEM  
EXIT  
GROUP  
POWER  
ALARM  
MENU  
12 cpi  
Yields more text per page.  
Recommended for standard text.  
15 cpi  
GROUP key..Prints the next Group in the Menu. With  
In HSD mode, yields fastest printing.  
Recommended for large volumes of data.  
the SHIFT key, prints the previous Group.  
ITEM key .....Prints the next Item in the Group. With the  
SHIFT key, prints the previous Item in the  
Group.  
17.1 cpi, 20 cpi  
Smallest print  
Recommended for spreadsheets.  
SET key ........Prints the next Setting for an Item. With  
the SHIFT key, prints the previous Setting  
for an Item.  
PROP  
Proportional spacing  
Recommended for documents where you want a more  
polished appearance.  
PRINT key ...Prints a copy of all the Menu settings.With  
the SHIFT key, prints the current settings  
for the Group selected.  
Not available for High Speed Draft.  
MENU light ..Glows when the printer is in the Menu  
Mode.  
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Entering and Exiting the Menu Mode  
Changing the Menu Settings  
To enter or exit the Menu Mode, hold SHIFT while pressing  
SEL.  
1. Press SHIFT + SEL to enter the Menu Mode.  
2. Use the GROUP, ITEM and SET keys to make your  
changes:  
Resetting the Menu  
Press GROUP successively until the Group you wish  
To reset the Menu to the standard settings:  
1. Turn the printer off.  
to change appears in the first column.  
PressITEM until the Item you wish to change appears  
in the second column.  
2. Press SEL + LF while turning the printer on.  
Press SET until the setting you want appears in the  
third column.  
Printing the Menu Settings  
1. Make sure paper is loaded in the printer.  
2. Enter the Menu Mode (SHIFT + SEL).  
3. Press PRINT (PARK).  
3. Press SHIFT + SEL to exit the Menu Mode and save  
your settings.  
Important! If you turn the printer off without first exiting  
the Menu Mode, the changes you have made  
will be lost.  
Note: To print out a listing of the settings for all menu items,  
regardless of the emulation selected or the accessories  
installed, enter the Menu Mode, then press SHIFT +  
PRINT QUALITY.  
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Summary of Menu Settings  
The table below shows the items which may appear in the menu. Settings which are engaged at the factory (defaults) are set in bold  
italic. Some groups or entries will only appear when a specific emulation is engaged, as noted.  
Group  
Item  
Setting  
Printer Control Emulation Mode  
EPSON LQ, IBM PPR, IBM AGM  
Font  
Print Mode  
LQ Courier, LQ Roman, LQ Swiss, LQ Swiss Bold, LQ Orator, LQ Gothic,  
LQ Prestige, Utility  
Pitch  
10 cpi, 12 cpi, 15 cpi, 17.1 cpi, 20 cpi  
No, Yes  
Proportional Spacing  
Style  
Size  
Normal, Italics  
Single, Double  
Symbol Sets  
Character Set  
Language Set  
Set I, Set II  
ASCII, French, German, British, Danish I, Swedish I, Italian, Spanish I, Japanese,  
Norwegian, Danish II, Spanish II, Latin American, French Canadian, Dutch, Swedish II,  
Swedish III, Swedish IV, Turkish, Swiss I, Swiss II, Publisher  
Zero Character  
Code Page  
Slashed, Unslashed  
USA, Serbo Croatic II, Canada French, ECMA-94, Multilingual, Windows East Europe,  
Portugal, Windows Greek, Norway, Latin 5 (Windows Turkey), Baltic 774, Windows  
Cyrillic, East Europe Latin II-852, Cyrillic I-855, Hungarian CWI, Turkey 857,  
Ukrainian, Cyrillic II-866, ISO Latin 6, Greek_869, Hebrew NC (862), Kamenicky  
(MJK), Hebrew OC, Greek_437, Windows Hebrew, Greek_437 CYPRUS, Windows  
Baltic, Turkey, Bulgarian, Polska Mazovia, Greek_928, ISO Latin 2, Serbo Croatic I  
Slashed Letter O  
No, Yes  
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Group  
Item  
Settings  
Rear Feed  
Line Spacing  
6 LPI, 8 LPI  
Form Tear-Off  
Off, 500 mS, 1 sec, 2 sec  
Skip Over Perforation  
Page Width (ML 3391 only)  
Page Length  
No, Yes  
13.6", 8"  
11", 11-2/3", 12", 14", 17", 3", 3.5", 4", 5.5", 6", 7", 8", 8.5"  
Bottom Feed  
Top Feed  
Line Spacing  
6 LPI, 8 LPI  
Form Tear-Off  
Off, 500 mS, 1 sec, 2 sec  
Skip Over Perforation  
Page Width (ML 3391 only)  
Page Length  
No, Yes  
13.6", 8"  
11", 11-2/3", 12", 14", 17", 3", 3.5", 4", 5.5", 6", 7", 8", 8.5"  
Line Spacing  
6 LPI, 8 LPI  
Bottom Margin  
Page Width (ML 3391 only)  
Page Length  
Valid, Invalid  
13.6", 8"  
11", 11-2/3", 12", 14", 16.57", 3", 3.5", 4", 5.5", 6", 7", 8", 8.5"  
500 mS,1 sec, 2 sec  
Wait Time  
Page Length Control  
by MENU Setting, by Actual Page Length  
Set-Up  
Graphics  
Bidirectional, Unidirectional  
23K, 1 Line, 8K  
No, Yes  
Receive Buffer Size  
Paper Out Override  
Print Registration  
0.25 mm Right, 0.20 mm Right, 0.15 mm Right, 0.10 mm Right, 0.05 mm Right, 0,  
0.05 mm Left, 0.10 mm Left, 0.15 mm Left, 0.20 mm Left, 0.25 mm Left  
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Group  
Item  
Settings  
Set-Up  
Operator Panel Function  
Reset Inhibit  
Full Operation, Limited Operation  
(continued)  
No, Yes  
Print Suppress Effective  
Auto LF  
Yes, No  
No, Yes  
Auto CR*  
No, Yes  
SI Select Pitch (10 cpi)*  
SI Select Pitch (12 cpi)*  
Time Out Print  
17.1 cpi, 15 cpi  
20 cpi, 12 cpi  
Valid, Invalid  
No, Yes  
Auto Select  
Graphics Speed  
Centring Position  
Low, High  
DEFAULT, MODE1, MODE2**  
Parallel I/F  
I-Prime  
Pin 18  
Buffer Print, Invalid, Buffer Clear  
+5V, Open  
Auto Feed XT***  
Invalid, Valid  
*
Appears only when the IBM emulation is selected.  
ML3391 only.  
**  
*** Applies only when the Epson emulation is selected.  
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Explanations of Menu Items  
Auto CR (IBM). If you want the printer to automatically add  
a carriage return when a Line Feed is received at the end of a  
line, change the setting to Yes.  
Emulation Mode. Choose the printer emulation.  
Form Tear-Off. Choose 500 mS, 1 sec, or 2 sec to turn the  
Form Tear-Off feature on and to set the time interval for the  
printer to wait before advancing the paper.  
Auto LF. If your printout is consistently double spaced, select  
No; if it overprints, select Yes.  
Graphics. Change to bidirectional graphics for faster printing:  
optimise the registration using the Print Registration menu  
item.  
Auto Feed XT (Epson). If your system uses pin 14 of the  
parallel interface to control automatic line feed, change the  
setting to Valid.  
I-Prime. Determines what the printer will do when it receives  
the I-Prime signal from the host: Buffer Print prints out the  
buffer contents before resetting; Buffer Clear dumps the buffer  
contents immediately. Invalid causes the printer to ignore the  
I-Prime signal.  
Auto Select. If you always use the sameTop of Form position,  
change the setting to Yes.  
Bottom Margin. Change to Invalid if you want the printer to  
ignore the bottom margin setting. Caution! This can cause  
loss of data and damage the printhead.  
Language Set.Replaces certain standard symbols with special  
characters used in foreign languages.  
Centring Position. Choose DEFAULT, Mode 1 or Mode 2.  
Line Spacing. Change to 8 lpi to get more lines on a page.  
Character Set. Choose IBM Set I or IBM Set II.  
Operator Panel Function. Change to Limited Operation to  
deactivate the PRINT QUALITY and CHARACTER PITCH  
buttons.Thisprevents these from being changed via the control  
panel when several people are using the printer.  
Code Page. Choose the Code Page character set you wish to  
use.  
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Page Length. Set this to match the length of the paper you Print Suppress Effective. If your system uses the DC1 and  
are using.  
DC3 codes for something other than the print suppress mode,  
change the setting to No.  
Page Length Control. Change the setting tobyActual Page  
Length” if you wish to print on single-sheet pages.When “by Proportional Spacing. Change the setting to Yes to engage  
Actual Page Length” is selected, the printer will print no closer proportional spacing of characters.  
than 1" from the edge of the paper. When “by Menu Setting”  
Receive Buffer Size. Sets the amount of memory for holding  
is selected, the printer will print to the length you have chosen.  
received data. Choosing 1 Line will tie up your computer  
Page Width (ML 3391 only). Change to 8" to print on while printing, but the printer stops much sooner if you abort  
letter-size paper.  
the job.  
Paper Out Override. Senses when less than 1" (25 mm) of Reset Inhibit. Select Yes to prevent your software from  
paper remains, and stops printing. Change toYes to override resetting your printer's settings.  
the sensor. Caution! This can cause loss of data and damage  
SI Select Pitch, 10 cpi (IBM). Sets the pitch to be engaged  
the printhead!  
when the printer control panel is set for 10 cpi and the SI  
Pin 18. Sets the signal on pin 18 to +5 volts or to open.  
command is received.  
Pitch. Choose the character width, in character per inch (cpi). SI Select Pitch, 12 cpi (IBM). Sets the pitch to be engaged  
when the printer control panel is set for 12 cpi and the SI  
command is received.  
Print Mode. Choose the quality and font for printing.  
Print Registration. Change the setting as required to obtain  
Size. Change to Double for double width and height printing.  
the best registration for bidirectional printing.  
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Skip Over Perforation. Change toYes if you want the printer  
to go to the next page when it comes within 1" (25 mm) of  
the bottom of the page. Keep it set to No if your software has  
its own page formatting controls.  
Using the Printer's Features  
Tear Feature  
Slashed Letter O. If set toYes, capital and lower case slashed  
O (Ø and ø) will appear at locations 9Bh and 9Dh respectively  
in USA code page. If set to No, the characters “¢” and “¥”  
will appear at these locations.  
SEL  
FF/LOAD  
TEAR  
SET  
PARK  
QUIET  
TOF  
LF  
SEL  
Micro Feed  
Down  
Micro Feed  
Up  
SHIFT  
MENU  
PRINT  
ITEM  
EXIT  
POWER  
GROUP  
ALARM  
MENU  
Style. Change to italics if you want the printed characters to  
be slanted.  
Use this feature to advance continuous-form paper up to the tear  
Time Out Print. If your software spends a long time  
processing between portions of data it feeds to the printer,  
change the setting to Invalid to keep your printer from  
inadvertently dumping the received data while it is waiting  
for more.  
position by simply pressing TEAR ().  
Note: The Tear Feature can not be used when the optional  
pull tractor is engaged.  
Forms Tear-Off Feature  
Wait Time. Sets the amount of time the printer will wait for  
Important! Never engage Forms Tear-Off when printing  
on labels!  
more data before moving to the form tear-off position.  
Zero Character. If you do not want the printer to use a slash  
to distinguish the number zero from the capital letter O, change  
the setting to Unslashed.  
The Forms Tear-Off feature automatically moves  
continuous-form paper up to the tear position after the interval  
you select, then moves it back down again for printing when  
the printer receives more data.  
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This feature is normally turned off. To activate it:  
Note: Some programs pause occasionally while sending  
data. If the pause is too long, the paper will advance  
to the tear-off position until more data is received.  
This extra paper movement can cause uneven print  
registration in graphics. If you have this problem,  
use the menu to turn off this feature.  
SEL  
FF/LOAD  
TEAR  
SET  
PARK  
QUIET  
TOF  
LF  
SEL  
Micro Feed  
Down  
Micro Feed  
Up  
SHIFT  
MENU  
PRINT  
ITEM  
EXIT  
GROUP  
Paper Park Feature  
POWER  
ALARM  
MENU  
1. Press SHIFT () + SEL ().  
SEL  
FF/LOAD  
TEAR  
SET  
PARK  
QUIET  
TOF  
LF  
SEL  
2. Press GROUP () until one of the following lines  
Micro Feed  
Down  
Micro Feed  
Up  
SHIFT  
MENU  
appears, depending on which paper feed you are using:  
PRINT  
ITEM  
EXIT  
POWER  
GROUP  
ALARM  
MENU  
REAR FEED  
Form Tear-Off  
Form Tear-OFF  
OFF  
OFF  
BOTTOM FEED  
To retract rear-feed paper form the paper path, pressPARK ().  
3. Press SET () consecutively until the time interval you  
wish to select appears in the third column.  
4. Press SHIFT () + SEL () to exit Menu Mode and  
save the setting.  
22  
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Specifications  
Print Method Impact dot matrix  
Characters per Line (CPL)  
Printhead  
24 pins, 0.20 mm diameter, thermal protection  
Setting  
10 cpi  
12 cpi  
15 cpi  
17.1 cpi  
20 cpi  
ML 3390  
ML 3391  
136 cpl  
163 cpl  
204 cpl  
233 cpl  
272 cpl  
Print Speed  
80 cpl  
96 cpl  
Pitch, Characters Speed, Characters  
120 cpl  
137 cpl  
160 cpl  
Mode  
per Inch  
per Second  
High Speed Draft  
Utility  
15 cpi  
390 cps  
10 cpi  
12 cpi  
17.1 cpi  
20 cpi  
260 cps  
312 cps  
223 cps  
260 cps  
Emulations  
Interface  
Graphics  
Epson LQ, IBM Proprinter, IBM AGM  
co-resident  
Letter Quality  
10 cpi  
12 cpi  
15 cpi  
17.1 cpi  
20 cpi  
87 cps  
104 cps  
130 cps  
149 cps  
174 cps  
Standard: Centronics parallel  
Optional: RS-232C serial  
Resolution  
360 x 360 dpi maximum  
Receive Buffer Size 23K  
DLL RAM 15K maximum (Epson emulation only)  
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Print Modes  
Resident Fonts  
Mode/Font  
LQ Courier  
LQ Roman  
LQ Swiss  
Size  
Mode  
Character Pitch  
10 cpi, 12 cpi, Superscript/subscript  
10 cpi, 12 cpi, Superscript/subscript  
10 cpi, 12 cpi, Superscript/subscript  
10, cpi, 12 cpi  
Letter Quality  
10, 12, 15, 17.1, or 20 cpi,  
or Proportional  
Utility  
10, 12, 17.1 or 20 cpi,  
or Proportional  
LQ Prestige  
LQ Orator  
High Speed Draft  
15 cpi  
10, cpi, 12 cpi  
LQ Letter Gothic 10 cpi, 12 cpi  
Bar Codes  
Code 39, UPC A, UPC E, EAN 8, EAN 13,  
Interleaved 2 of 5, Code 128, Postnet  
LQ Swiss Bold  
Utility Gothic  
HSD Gothic  
10, cpi, 12 cpi  
10, cpi, 12 cpi, Superscript/subscript  
15 cpi  
Scalable Fonts Courier, Roman and Swiss, sizes 8 to 64 points  
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Reliability  
Paper Specifications  
Parameter  
Reliability  
Paper Type Feed  
Weight  
Width Range*  
Mean Time Between Failures 10,000 hours at 25% duty  
Cut sheets Top Only 58 - 90 g/m²  
(14-24 lb.)  
ML3390: 182.9 - 215.9mm  
(7.2" - 8.5")  
(MTBF)  
cycle and 35% page density  
ML3391: 182.9 - 363.2mm  
(7.2 to 14.3")  
Mean Time to Repair  
(MTTR)  
15 minutes  
Single-part Rear,  
continuous Bottom (12-24 lb.)  
forms  
45 - 90 g/m²  
ML3390: 76.2 - 254mm  
(3-10")  
ML3391: 76.2 - 406.4mm  
(3-16")  
Printhead Life  
200 million characters  
average in 10 cpi draft mode  
at 25% duty and 35% page  
density  
Carbonless Rear,  
continuous Bottom (9-11 lb.)  
forms  
34 - 41 g/m²  
ML3390: 76.2 - 254mm  
(3-10")  
ML3391: 76.2 - 406.4mm  
(3-16")  
Ribbon Life (on average,  
10 cpi utility)  
2 million characters  
Interleaf  
continuous Bottom (10-12 lb.)  
forms  
Rear,  
38 - 45 g/m²  
ML3390: 76.2 - 254mm  
(3-10")  
Paper Width  
Minimum: 3"  
Maximum, ML 3390: 10"  
Maximum, ML 3391: 16"  
Carbon 34g/m² ML3391: 76.2 - 406.4mm  
(9 lb.)  
(3-16")  
Paper Weight  
45 to 90 g/m² (12 to 24 lb.)  
Labels  
Bottom  
Only  
ML3390: 76.2 - 254mm  
(3-10")  
ML3391: 76.2 - 406.4mm  
(3-16")  
Paper Thickness  
Rear Feed: 0.36mm (0.014") max.  
Bottom Feed: 0.44mm (0.017") max.  
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Paper Specifications (continued)  
Environmental Requirements  
Parameter  
Range  
Paper Type  
Feed  
Weight  
Width Range*  
Operating Temperature  
Storage Temperature  
Operating Humidity  
5 to 40°C  
-10 to +50°C)  
Envelopes,  
single feed  
Top Only 90 g/m² max. 165.1 - 241.3mm  
(24 lb.) (6.5" to 9.5")  
Envelopes,  
continuous feed,  
non-overlap  
Bottom 90 g/m² max. 165.1 - 241.3mm  
Only (24 lb.) (6.5" to 9.5")  
20 to 80% RH (max. wet  
bulb temp. 30°C)  
Card stock  
Bottom 178 g/m² max. N.A.  
Storage Humidity  
5 to 95% RH (max. wet  
bulb temp. 40°C)  
Only  
(48 lb.)  
Transparencies  
Top Only  
215.9 - 279.4mm  
(8.5" x 11")  
Electrical Requirements  
230/240 volts ac (+10%, -14%),  
50/60 Hz (±2%)  
Dimensions (W x D x H)  
ML 3390: 15.7 x 13.6 x 4.6 inches  
(398 x 345 x 116 mm)  
This product complies with the requirements of the Council  
Directive 89/336/EEC on the approximation of the laws of the  
member states relating to electromagnetic compatibility.  
ML 3391: 16.9 x 13.6 x 4.6 inches  
(430 x 345 x 116 mm)  
Specifications subject to change without notice.  
Weight  
ML 3390: TBD  
ML 3391: TBD  
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Index  
A
Continuous-form paper  
F
K
jams, clearing .............. 2-5  
specifications ................ 24  
Control panel ................ 11-14  
Cut sheet specifications .... 25  
Alarm light  
Factory settings, menu . 16-18 Keys  
troubleshooting ............... 9  
Auto  
CR menu setting ........... 19  
Fonts ............................ 13, 24  
Form tear-off feature ......... 21  
menu setting ................. 19  
Front panel ................... 11-14  
menu mode ................... 14  
print mode..................... 12  
feed XT menu setting ... 19  
LF menu setting............ 19  
select menu setting ....... 19  
L
D
Label specifications .......... 25  
Language set menu  
Defaults, menu ........... 116-18  
resetting ........................ 15  
Decollator menu  
setting ............................... 19  
Dimensions ........................ 25  
DLL RAM ......................... 23  
G
Graphics menu setting ...... 19  
Graphics resolution ........... 23  
setting ............................... 19  
Letter quality fonts...... 13, 24  
Lights, control  
B
Bar codes ........................... 24  
Bottom margin menu  
setting ............................... 19  
H
panel ..................... 11, 13, 14  
Line spacing menu  
setting ............................... 19  
High speed draft .......... 13, 24  
Housing, cleaning ............... 7  
Humidity requirements ..... 26  
E
C
Electrical requirements ..... 26  
Emulation mode menu  
setting ............................... 19  
Emulations......................... 23  
Envelope specifications..... 26  
Environmental  
M
Card stock specifications .. 26  
Centring position menu setting  
19  
Character pitch .................. 14  
Characters per line ............ 23  
Character set menu  
I
Maintenance ..................... 1-7  
Menu  
Indicator lights ...... 11, 13, 14  
Interface............................. 23  
I-Prime menu setting ......... 19  
items ........................ 19-21  
mode ........................ 14-14  
settings ..................... 16-18  
requirements..................... 26  
setting ............................... 19  
Code page menu setting .... 19  
J
Jams, paper ....................... 2-6  
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O
Print suppress effective  
Skip over perforation  
W
menu setting ..................... 20  
Printhead specifications .... 23  
Problem solving ............. 8-10 Specifications ............... 23-26  
menu setting ..................... 21  
Slashed letter ‘O’ .............. 21  
Operator panel function  
menu setting ..................... 20  
Wait time menu setting ..... 21  
Weight ............................... 26  
Proportional spacing  
menu setting ..................... 20  
Storage  
humidity........................ 26  
temperature ................... 26  
Style menu setting ............. 21  
P
Z
Page length menu setting .. 20  
Page length control menu  
setting ............................... 20  
Page width menu setting ... 20  
Panel, front ................... 11-14  
Paper  
Zero character menu  
setting ............................... 21  
R
Rear feed paper  
T
jams.............................. 2-5  
Receive buffer size ...... 20, 23 Tear feature........................ 21  
Reliability .......................... 25  
Repetitive paper jams....... 4-5  
Reset inhibit menu  
setting ............................... 20 Time out print menu  
Resident fonts .................... 24  
Ribbon replacement ......... 1-2  
Tear-off feature .................. 21  
Temperature  
requirements ..................... 26  
jams, clearing .............. 2-6  
specifications ................ 23  
Paper out override menu  
setting ............................... 20  
Paper park feature ............. 22  
Pin 18 menu setting........... 20  
Pitch menu setting ............. 20  
Print mode .................... 11-14  
menu setting ................. 20  
Print modes........................ 24  
Print quality ....................... 13  
Print registration menu  
setting ............................... 21  
Transparency  
specifications.................... 26  
Troubleshooting ............. 8-10  
S
Scalable fonts .................... 24  
SI select pitch menu  
settings ............................. 20 Utility mode ................ 13, 24  
Single sheet paper jams,  
U
setting ............................... 20  
Print speed ......................... 23  
clearing............................... 6  
Size menu setting .............. 20  
V
Voltage requirements......... 26  
28  
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Oki Systems Company  
Oki Systems (UK) Limited  
550 Dundee Road  
Slough Trading Estate  
Slough  
Berks. SL1 4LE  
Tel: 01753-819819  
Fax: 01753-819899  
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