Oki ML690, ML691 User's Guide
User's Guide
45690601EE Rev1 my.okidata.com
RT322
ML690/ML691
ML690/ML691 User’s Guide
Trademark Information
P/N 45690601EE Rev1
September, 2013
Every effort has been made to ensure that the information in this document
is complete, accurate, and up-to-date. Oki Data assumes no responsibility
for the results of errors beyond its control. Oki Data also cannot guarantee
that changes in software and equipment made by other manufacturers and
referred to in this guide will not affect the applicability of the information in
it. Mention of software products manufactured by other companies does not
necessarily constitute endorsement by Oki Data.
Copyright 2010 by Oki Data. All rights reserved.
ENERGY STAR
®
As an ENERGY STAR Partner, Oki Data has determined that this product
meets the ENERGY STAR guidelines for energy efficiency.
Note: Not comply (when employing Network Interface Card).
OKI and MICROLINE are registered trademarks of Oki Electric Industry
Co., Ltd.
Epson is a registered trademark of Epson America, In.
IBM is a registered trademark of International Business Machines
Corp.
Microsoft and Windows are either registered trademarks or trademarks
of Microsoft Corporation in the United States and other countries.
ML690/ML691 User’s Guide 2
Chapter 1: Introduction .................................................................5
Printer Features .....................................................................................5
Oki Data on the Internet ...........................................................5
Parts Identication: Front View ...........................................................6
Parts Identication: Rear View .............................................................7
Parts Identication: Inside View .........................................................7
The Control Panel ..................................................................................8
Print Mode Key Functions .........................................................12
Chapter 2: Paper Handling .........................................................14
Loading Continuous Forms Paper ....................................................15
Rear Feed .................................................................................16
Front Feed ................................................................................19
Bottom Feed (optional pull tractor) ...........................................21
Tearing Off Continuous Forms Paper .......................................22
Aligning the Tear-Off Perforations ............................................22
Removing Continuous Forms Paper .........................................23
Loading Cut Sheet Paper ...................................................................23
Cut Sheet Paper, Top and Front Feed .....................................23
Ejecting Cut Sheet Paper .........................................................25
Notes on Different Types of Paper ...........................................26
Top of Form (TOF) ...............................................................................27
Top of Form (TOF) and Forms Tear-Off ...................................27
Determining if Forms Tear-Off is Off or On ...............................28
To print the Menu: ..................................................................28
To use the TEAR key: ............................................................28
Setting Top of Form (TOF): ......................................................29
Temporarily Changing the Top of Form Position ......................30
Resetting Top of Form to the Factory Default ...........................30
Forms Tear-Off Feature ......................................................................31
Potential Problems with Software Packages ............................31
Changing the Forms Tear-Off Setting .......................................32
Manual Forms Tear Off .............................................................32
Paper Park ............................................................................................33
Setting the Paper Thickness Lever ....................................................33
Paper Type Table ..................................................................34
Chapter 3: Print Settings ............................................................35
Print Quality .........................................................................................36
Draft: the default ....................................................................36
HSD: High Speed Draft ..........................................................36
LQ: Letter Quality ...................................................................36
Character Pitch ....................................................................................37
Print Speed ..........................................................................................38
Printer Reset ........................................................................................ 38
Emulations ...........................................................................................39
Changing Emulations ................................................................39
Chapter 4: Menu Mode ................................................................ 40
Menu Mode Keys ......................................................................40
Menu Mode Keys and Functions ..............................................41
Entering and Exiting Menu Mode ..............................................42
Resetting the Menu to the Factory Defaults .............................42
Printing the Menu Settings ........................................................43
Printing the Current Menu Settings ........................................43
Printing All Menu Settings ......................................................43
Changing the Menu Settings ....................................................43
Menu Settings Table .................................................................44
ML690/ML691 User’s Guide 3
Chapter 5: Maintenance .............................................................. 70
Replacing the Ribbon Cartridge ........................................................70
Ribbon Cartridge Handling ....................................................70
If ribbon should contact the eyes: ..........................................73
If ribbon should contact the skin ............................................73
For more information .............................................................73
Clearing Paper Jams ...........................................................................74
Continuous Feed Paper Jams ..................................................74
Cut Sheet Paper Jams ..............................................................75
Cleaning the Printer ............................................................................77
Printer Exterior ..........................................................................77
Printer Interior ...........................................................................77
Testing the Printer ...............................................................................78
Font Sample Test .....................................................................78
Rolling ASCII Test ....................................................................79
Hexadecimal Dump Mode ........................................................80
Chapter 6: Troubleshooting .......................................................81
General Information ............................................................................81
Responding to Alarm Conditions ......................................................82
Problems / Solutions............................................................................83
Appendix A: Parts & Accessories ..............................................89
Purchasing Parts & Accessories .......................................................89
Consumables .......................................................................................90
Accessories .........................................................................................90
Appendix C: Specications ........................................................ 96
Print Method .............................................................................96
Printhead ..................................................................................96
Interfaces ..................................................................................96
Receive Buffer Size ..................................................................96
Printhead Life .........................................................................96
Reliability ..................................................................................96
Ribbon Life .............................................................................96
Emulations (co-resident) ...........................................................96
Physical Specications .............................................................96
ML690 ....................................................................................96
ML691 ....................................................................................96
Print Speed ...............................................................................97
Characters per Line (cpl) ..........................................................97
Graphics Resolution .................................................................97
Resident Fonts ..........................................................................97
Bar Codes .................................................................................98
Paper Thickness: Tractor Feed ................................................98
Environmental Requirements ...................................................98
Temperature ..........................................................................98
Humidity .................................................................................98
Electrical Requirements ............................................................98
Paper Specications .................................................................99
Appendix B: Printer Control Codes ........................................... 91
IBM Proprinter Commands .................................................................91
Epson FX Commands .........................................................................94
ML690/ML691 User’s Guide 4
Chapter 1: Introduction
Printer Features
Super reliable, durable operation: 25,000 hours
Mean Time Between Failures (MTBF) at 25% duty
cycle and 35% page density
Advanced paper handling, with built-in rear push
tractor and zero-tear forms capability.
Blazing print speeds, in characters per second:
High Speed Draft (HSD) Mode: 480/576 cps
Draft Mode: 360/540 cps
Letter Quality (LQ) Mode: 120 cps
This rugged 24 pin printer can meet the needs of
harsh and demanding environments.
Five methods of loading paper and printing:
Continuous Forms Rear Feed (Push), Continuous
Forms Front Feed (Push), Continuous Forms
Bottom Feed (Pull), Cut Sheet (Top), Cut Sheet
(Front)
Oki Data on the Internet
The Oki Data Web Sites provide the most current
information available on your printer.
On-line documents are available for viewing and
downloading via Oki Data’s Web Sites.
You may reach Oki Data via the Internet at:
www.okiprintingsolutions.com
my.okidata.com
ML690/ML691 User’s Guide 5
Parts Identication: Front View
Sheet Guide, Rear
1.
Paper Type Lever
2.
Platen Knob
3.
Sheet Guide, Front (open to t the front feed
4.
paper tray or the tractor)
5.
Control Panel
6.
On-Off Switch
7.
Access Cover
7
1
2
3
6
5
4
ML690/ML691 User’s Guide 6
Parts Identication: Rear View
USB connector
1.
Parallel connector
2.
Optional Serial/Network connector
3.
Ventilation
4.
Power Connector
5.
Optional Cut Sheet Feeder/Roll Paper Stand
6.
connector
Note: The serial number of your printer is on a label on
the back, beside “S/N.”
Parts Identication: Inside View
Paper Thickness Lever
1.
Ribbon Cartridge
2.
Print Head
3.
Pull-up Guide Assembly
4.
1
4
2
3
5
4
3
2
1
6
ML690/ML691 User’s Guide 7
The Control Panel
The ALARM light
indicates an
alarm condition
The SEL light
indicates if
the printer is
online
The 7 keys function
differently, depending
on which printer
mode is active
The lights above these key labels show which option in the list is
active. For example, if both of the
CPI is the current character pitch; if both lights are ashing, then
PROP (proportional) is the current pitch.
CHR PITCH lights are lit, then 15
The MICROFEED keys advance
() or retract () the paper in
small increments
Hold down the CHR PITCH key and press the PRINT SPEED key to
enter Menu mode; repeat the sequence to exit Menu mode. In Menu
mode use the purple text labels underneath the keys to identify the
Keys work differently according to which “mode” is active.
function of each key.
The lines above
the square
indicate a
ashing light
ML690/ML691 User’s Guide 8
Control Panel Indicator Light Functions
Indicator Light Color Status Explanation
ALARM
Red ON The paper is at its end; i.e., no paper present.
OFF Paper is present.
Flashing When ashing with
SEL: unrecoverable status alarm. Turn the
power OFF, verify that the carriage moves properly, then turn
power ON again. May indicate: a paper jam, media alarm,
thermal alarm (head/space/feed)
When ashing together with the
temperature alarm status.
SEL (Select)
Green ON Printer is online; ready to receive data and print.
OFF Printer is ofine; not ready to receive data and print.
Flashing When ashing with
ALARM: unrecoverable status alarm. Turn
the power OFF, verify that the carriage moves properly, then
turn power ON again.
When ashing together with the
Cover is open.
TEAR
Green ON Printer is in Menu mode.
OFF Printer is in Tear down position.
Flashing Printer is in Tear up position.
TEAR light, indicates high
TEAR light, indicates the Top
ML690/ML691 User’s Guide 9
Control Panel Indicator Light Functions
Indicator Light Color Status Explanation
PRINT QUALITY
Green ON
> LED 1
> LED 2
> LED 1 and 2
With ALARM light ashing:
> Indicates paper park/eject jam.
> Indicates paper loading jam.
> Indicates incorrect media setting.
ON
> LED 3
> LED 2
> LED 2 and 3
> LED 1
> LED 1 and 3
> LED 1 and 2
> LED 1, 2 and 3
> Indicates HSD is selected.
> Indicates DRAFT is selected.
> Indicates COURIER is selected.
> Indicates ROMAN is selected.
> Indicates SWISS is selected.
> Indicates SWISS-B is selected.
> Indicates ORATOR is selected.
Flashing
> LED 3
> LED 2
> LED 2 and 3
> LED 1
Flashing
> LED 2
> Indicates GOTHIC is selected.
> Indicates PRESTIGE is selected.
> Indicates OCR-A is selected.
> Indicates OCR-B is selected.
ALARM light ashing:
With
> Indicates an incorrect Paper Lever setting.
ML690/ML691 User’s Guide 10
Control Panel Indicator Light Functions
Indicator Light Color Status Explanation
CHR PITCH
PRINT SPEED
Green ON
ON
Flashing
Green ON
> LED 2
> LED 2
> LED 1
> LED 1 and 2
> LED 2
> LED 1
> LED 1 and 2
> LED 2
> LED 1
> LED 1 and 2
With TEAR light ON:
> Printer is in
Without
Menu Mode.
ALARM light ashing:
> 10 CPI is selected.
> 12 CPI is selected.
> 15 CPI is selected.
Without
ALARM light ashing:
> 17 CPI is selected.
> 20 CPI is selected.
> PROP (Proportional) is selected.
With TEAR light OFF:
> NORM (Normal Speed) is selected.
> HIGH SPEED is selected.
> QUIET print is selected.
Flashing
> LED 2 > HIGH COPY is selected.
SLEEP
Green Flashing Low power consumption mode.
ML690/ML691 User’s Guide 11
Print Mode Key Functions
Function of Keys in PRINT MODE
Key Status Function when pressed
SEL
LF/FF
(Line Feed/
Form Feed)
LOAD/EJECT
TEAR
PRINT QUALITY
CHR PITCH
PRINT SPEED
SEL + LF/FF
On-line Takes the printer off-line.
Off-line Takes the printer on-line.
On-line For continuous forms: when paper is loaded, performs a form feed.
For cut sheets: to eject the cut sheet hold the button down.
Off-line For a line feed: press once
For a form feed: press and hold (for more than 400 ms)
On-line / Off-line When no paper loaded: performs a paper load.
When paper is loaded:
- Continuous forms: Retracts the form to the Pin Tractor (i.e., reverses
and moves paper out of the printer).
- Cut sheet paper: Ejects the cut sheet.
- Pull feed: no effect.
On-line / Off-line Continuous forms only: moves the paper to its cut position.
Pull feed: no effect.
On-line / Off-line Press the key to toggle through the font options.
On-line / Off-line Press the key to toggle through the character pitch options.
On-line / Off-line Press the key to toggle through the print speed options.
On-line / Off-line No effect.
ML690/ML691 User’s Guide 12
Function of Keys in PRINT MODE
Key Status Function when pressed
SEL + LOAD/
EJECT
On-line No effect.
Off-line Pressing these keys at the same time
factory defaults.
SEL + CHR
PITCH
LOAD/EJECT +
SEL
LOAD/EJECT +
LF/FF
TEAR + SEL
On-line No effect.
Off-line Selects a Menu conguration.
On-line / Off-line Performs a forward line feed of 1/180” when paper is loaded.
On-line / Off-line Performs a reverse line feed of 1/180” when paper is loaded.
On-line / Off-line Performs a forward line feed of 1/180” when paper is in the tear
position.
TEAR + LF/FF
CHR PITCH +
PRINT SPEED
On-line / Off-line Performs a reverse line feed of 1/180” when paper is in the tear position.
Online / Ofine Enters/Exits Menu Mode.
RESETS the printer to the original
ML690/ML691 User’s Guide 13
Chapter 2:
Paper Handling
This chapter describes how to use continuous forms
and cut sheet paper in the printer, including:
Loading Continuous Forms Paper
Rear Feed
Front Feed
Bottom Feed (optional pull tractor)
Managing Continuous Forms Paper
Tearing Off Continuous Forms Paper
Aligning the Tear-Off Perforations
Removing Continuous Forms Paper
Loading Cut Sheet Paper
Cut Sheet Paper, Top and Front Feed
Ejecting Cut Sheet Paper
Notes on Different Types of Paper
ML690/ML691 User’s Guide 14
Loading Continuous Forms Paper
rear
front
bottom
To avoid paper feeding problems:
Make sure the printer is on a surface
approximately 30” (76 cm) above the oor.
Position the continuous forms supply directly
below the printer, no more than 1.2” (3 cm) left
or right of the printer paper path.
Make sure the rear of the printer is close to and
parallel with the edge of the surface and at least
24” (61 cm) from any wall.
There are three ways to load continuous forms paper.
See the following pages for instructions.
Rear feed
Front feed
Bottom feed (optional pull tractor)
ML690/ML691 User’s Guide 15
Rear Feed
Note: If you have any paper in the paper path, remove
it before installing rear feed paper.
1 Lock Lever
2 Upper Tractor Cover
3 Pins
Note: These instructions assume you have ready access
to the back of the printer. If you do not, skip
down to “Front Feed.”
Make sure the printer is turned ON.
1.
Make sure the Paper Type lever is in the REAR
2.
feed position:
2
1
3.
Open the access cover (1) and set the Paper
Thickness lever to suit the paper. Close the cover.
1
3
ML690/ML691 User’s Guide 16
Grasp the sheet guide (1). Lift it slightly, then
4. From the back of the printer, locate the tractors
slide it off the printer.
1
5.
(1).
NOTE: If the tractor assembly is in the front of
the printer, open the front access door, grab the
nger guides (2) on each side and pinch them
together to release the guide. Remove it from the
front and insert it into the back feed and when it
is seated, push down to snap the guides in place.
Close the front access door.
2
1
ML690/ML691 User’s Guide 17
Open the lock levers (1) and move the right
reartractor-cover-close-B
6.
tractor (as viewed from the back of the
printer) to the reference mark (2) matching the
width of the paper you are loading. Then close
the lock lever on the right tractor.
2
1
7.
Move the rear paper guide to midway between
the left and right tractor pins.
8.
Open the tractor covers.
9.
Place continuous forms paper on the rst two
pins of either tractor.
Important!
Be sure that both sides of the paper have the same
number of paper holes engaged on the sprocket pins.
If you don’t, the paper will skew and jam.
Close the right tractor cover.
10.
Adjust the left tractor until the holes in the paper
11.
are centered on the pins then lock the lever and
close the left tractor cover.
Note: If the paper is too loose or too tight it can cause
jams.
12.
Lower the top paper tray and slide it towards the
front of the printer until the marks align.
ML690/ML691 User’s Guide 18
Press and hold the LOAD/EJECT key to advance
13. Make sure the printer is turned ON.
the paper.
Note: The factory default setting for the Top of Form
(where the printing should begin) is 11/12” down
from the top of the page. To change the setting,
see “Top of Form (TOF)”.
Front Feed
1.
Make sure the Paper Type lever is in the FRONT
2.
feed position.
3.
Open the access cover (1) and set the Paper
Thickness lever to suit the paper. Close the cover.
4.
1 Lock Lever
Pull down the door to open the front sheet guide
(2).
2 Upper Tractor Cover
3 Pins
2
1
1
3
2
ML690/ML691 User’s Guide 19
Make sure the tractor assembly is in the front of
fronttractor-cover-close-20-70
5.
the printer. If the tractor is in the back, remove
the sheet guide, grab the nger guides (1) on
each side and pinch them together to release the
guide. Remove it from the back and insert it into
the front feed and when it is seated, push down
to snap the guides in place. Replace the back
sheet guide.
1
1
then close the left tractor cover.
Important!
Be sure that both sides of the paper have the same
number of paper holes engaged on the sprocket pins.
If you don’t the paper will skew and jam.
Adjust the position of the right tractor to center
10.
the holes in the paper on the pins. Then, close
the tractor cover and push back the lock lever. Do
not stretch the paper.
Note: If the paper is too loose or too tight it can cause
jams.
Pull up on the lock levers to release them and
6.
allow the tractor sprockets to slide back and
forth.
You will nd reference marks on the printer for
7.
the most common paper sizes.
Move the left tractor to the position to match
8.
your paper size and push back on the lever to
lock it in place, then move the right tractor to t
the width of the paper.
Open the tractor covers and place continuous
9.
forms paper on the rst two pins of either tractor,
ML690/ML691 User’s Guide 20
Press and hold the LOAD/EJECT key to advance
11.
the paper.
Note: The factory default setting for the Top of Form
(where the printing should begin) is 11/12”
(23.28 mm) down from the top of the page. To
change the setting, see “Top of Form (TOF)”.
Bottom Feed (optional pull tractor)
Make sure the printer is turned OFF.
1.
Open the access cover.
2.
Adjust the Paper Thickness Lever to suit the
3.
paper.
Make sure the Paper Type Lever is in the PULL
4.
position.
5.
Place the printer on a slotted printer stand,
carefully aligning the slot in the stand with the
slot in the base of the printer.
Place the paper through the slot in the base of
6.
the printer.
7.
Bring the paper through the slot in the base of
the printer.
Lift the locking lever of the left Pin Tractor and
8.
slide the Pin Tractor as required to adjust the
paper position. Then press the locking lever back
down to lock the Pin Tractor.
Lift the locking lever of the right pin tractor and
9.
slide the Pin Tractor to the required position to
accommodate the width of the continuous forms
to be used. Move the paper guide to midway
between the left and right Pin Tractors.
10.
Open the left and right Pin Tractor covers and
feed the continuous forms in the direction of the
arrow, loading the sprocket holes in the forms
onto the sprocket pins.
NOTE: Make sure that paper is fed straight into the
printer to avoid the possibility of skew printing,
irregular line feeding and paper jams.
11.
Make sure that the forms are properly aligned
on the sprocket pins, then close the Pin
Tractor covers. Adjust the right Pin Tractor to
accommodate the width of the continuous forms,
taking care that the forms are held neither too
loosely nor too tightly between the Pin Tractors.
Press the locking lever down to lock the right Pin
Tractor in the desired position.
NOTE: Make sure that the continuous form is pulled
ML690/ML691 User’s Guide 21
down to take up slack. Slack will cause the line
pulltractor-cover-close-A
spacing to be inconsistent. Turn the platen to
help remove the slack.
Close the access cover.
12.
13.
Turn the printer ON.
14.
Press the LF/FF key to feed paper to the tractor.
NOTE: If the TOF position shifts because of taking
up slack, press the LF/FF key to set the TOF
position. Do not use the platen knob for this
option as this will cause irregular line spacing.
Tearing Off Continuous Forms Paper
With the SEL indicator illuminated, press the TEAR
1.
key to feed the continuous forms to the tear-off
position.
Carefully tear off the forms along the tear-off
2.
perforations in the direction shown.
When data is received by the printer or when
3.
the SEL key is pressed to select the printer, the
continuous forms is repositioned to the rst line
print position.
Aligning the Tear-Off Perforations
If the tear-off perforations are not aligned with the
paper cutter on the access cover, align them as
follows:
1.
With the SEL indicator illuminated, press the TEAR
button to move the tear-off perforations to the
paper cutter on the access cover.
Check the position of the tear-off perforations
2.
relative to the paper cutter. Adjust to the desired
tear-off position using the 1/180” line feeds (LF).
- To move the form forward, press and hold the
TEAR and SEL keys at the same time, then
release the keys.
- To move the form backward, press and hold the
ML690/ML691 User’s Guide 22
TEAR and LF/FF keys at the same time, then
release the keys.
Continue until the tear-off perforations have been
3.
aligned with the paper cutter.
When data is received by the printer or when the SEL
key is pressed to select the printer, the paper will
retract to the new position.
Loading Cut Sheet Paper
There are two methods of loading single sheets of
cut sheet paper, top feed and front feed. See the
following pages for instruction.
Cut Sheet Paper, Top and Front Feed
Make sure the printer is turned ON.
1.
Removing Continuous Forms Paper
1.
Tear off the continuous forms.
2.
Press the LOAD/EJECT key to move the front edge
of the continuous forms backwards to the Pin
Tractors.
NOTE:
The printer switches to ofine mode. The
ALARM indicator illuminates to indicate that
there is no paper present. If sprocket holes
of the last page of the forms disengage from
the sprocket pins, do not attempt to eject the
paper to avoid the possibility of a paper jam.
3.
Lift the pin tractor covers and remove the forms.
4.
Close the pin tractor covers.
Note: If there is any continuous forms paper in the
printer, eject it as described in “Removing
Continuous Forms Paper”.
Make sure that the Pin Tractor covers are closed to
2.
avoid the possibility of paper jams.
3.
Place the Paper Type lever in the cut sheet position:
To load the cut sheet in the Top Feed Paper tray,
4.
raise the top tray.
To load the cut sheet in the Front Feed Paper tray,
open the front cover and install the front paper tray.
ML690/ML691 User’s Guide 23
Set the left margin of the paper by adjusting the
5.
appropriate Paper Guides (1) along the scale (2)
relative to the start of the printed line marker
arrow.
Open the access cover and adjust the Paper
6.
Thickness lever (1) to suit the paper. Close the
cover.
1
2
1
NOTE: If the Paper Thickness lever setting does not
match the paper, paper feeding and printing
may not work properly.
With the printing side downwards for top feed
7.
and upwards for front feed and the left edge
aligned with the Paper Guide (1), carefully insert
the paper on the Paper Tray (2) and into the
printer until it is gripped.
1
1
2
2
ML690/ML691 User’s Guide 24
1
2
To advance the paper in small steps, press LF/FF.
8.
NOTES:
> Make sure that the paper is accurately aligned
along the Paper Guide to avoid the possibility of
skewed printing or paper jams.
> When printing an envelope, do not open up the
ap.
> If you are feeding thick paper, push it in
sufciently until it touches the feed roller to avoid
the possibility of skewed printing or paper jams.
Ejecting Cut Sheet Paper
When the printer reaches the end of the cut sheet
page it automatically ejects the page. If required,
add another sheet for the printer to continue printing
from where it left off.
To eject a cut sheet left in the printer, follow these
steps:
Press the SEL button to take the printer off-line.
1.
Press LOAD/EJECT to eject the paper to the paper
2.
tray.
ML690/ML691 User’s Guide 25
Notes on Different Types of Paper
Narrow paper: When printing on very narrow
paper (e.g., three inches), change the Centering
position (see the Menu Settings Table in Chapter
3) to “Mode1”. Failure to change the Centering
position can result in paper jams.
Envelopes: When printing envelopes be sure to
adjust the Paper Thickness Lever to include the
thickness of the overlapped and glue parts of the
envelope — that is, the maximum thickness. If
the Paper Thickness Lever is set for the thinnest
part of the envelope the print density may
uctuate.
Glossy paper: Test paper with a glossy nish
thoroughly before using. A glossy surface can
absorb marks from the paper feed roller or from
rubbing. Also, glossy paper may slip causing
erratic line spacing.
Seal-type cards: Test seal-type cards thoroughly
before using. This type of card can cause ink to
transfer.
Labels:
Always feed labels from the FRONT — never
from the top — labels fed from the top will
peel off, causing paper jams.
The adhesive strength of labels can vary — if
the adhesive is not strong enough labels can
peel off and cause jams.
Do not use labels on individual sheets.
ML690/ML691 User’s Guide 26
Top of Form (TOF)
Important!
If you turn the platen knob when the printer is on,
the Top of Form misaligns. Always shut the printer off
before turning the platen knob.
Top of Form (TOF) and Forms Tear-Off
Note: Your software may print the rst line of print
above or below where TOF is set. You may
need to adjust the TOF to meet your software’s
requirements.
Note: The factory default setting for the Top of Form
(where the printing should begin) is 11/12”
(23.28 mm) down from the top of the page.
Top of Form sets the print start position for the
printer. It is adjustable in increments of 1/180 of an
inch.
The rst line prints at the default top of form.
The Top of Form and Forms Tear-Off settings of
your printer interact. How you set the Top of Form
depends on whether Forms Tear-Off is ON (set to
500 ms, 1 sec, or 2 sec) or OFF (the factory default
setting).
ML690/ML691 User’s Guide 27
Determining if Forms Tear-Off is Off or
On
When the TEAR light is blinking, it indicates that the
printer is in TEAR position (i.e., the paper is ready to
be torn off).
There are two ways to determine the status of the
Forms Tear-Off menu setting:
Print the Menu
Use the TEAR key
Look for the Form Tear-Off setting in the paper
5.
feed group you are using.
To use the TEAR key:
Make sure paper is loaded.
1.
Press TEAR (5).
2.
If the paper moves up, Forms Tear-off is off.
If the paper moves down, Forms Tear-off is on.
To print the Menu:
Make sure paper is loaded.
1.
Press the SEL key (1).
2.
Hold down the CHR PITCH (2) key and press the
3.
PRINT SPEED key (3).
Press the PRINT QUALITY (4) key to print the
4.
menu.
ML690/ML691 User’s Guide 28
Setting Top of Form (TOF):
Notes:
Adjusting the TOF can be done in cut sheet or
continuous forms mode.
If necessary, print the menu settings to
determine where the current TOF is set.
The default TOF is set at 11/12” (23.28 mm).
With paper loaded and the printer on and selected:
Align the paper with the rst print line position as
1.
follows:
To set the TOF lower (the rst line of print on
the page moves down), press and hold down
the LOAD/EJECT and SEL keys at the same
time.
To set the TOF higher (the rst line of print on
the page moves up), press and hold down the
LOAD/EJECT and LF/FF keys at the same time.
The paper moves in increments of 1/180”.
2.
When you have the TOF set where you want it,
press and hold SEL, then press LF/FF to save the
new setting.
Note: To reset the Top of Form to the factory default,
see “Resetting Top of Form to the Factory
Default” later in this chapter.
ML690/ML691 User’s Guide 29
Temporarily Changing the Top of Form
Position
Important
Do not use the platen knob to change the Top of Form.
If you turn the platen knob when the printer is turned
ON, the Top of Form misaligns. Always turn the printer
OFF before turning the platen knob!
To move the Top of Form position lower for one page
only:
1.
Press SEL to deselect the printer.
2.
Press LF to lower the position of the Top of Form.
Resetting Top of Form to the Factory
Default
The factory default setting for the Top of Form
(where the printing should begin) is 11/12”
(23.28 mm) down from the top of the page.
To reset the Top of Form to the factory default:
Remove paper from the paper path.
1.
Turn the printer off.
2.
Press and hold LF/FF + TEAR while turning on the
3.
printer.
4.
Reload paper.
ML690/ML691 User’s Guide 30
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