Oki C9300dn User manual

C9300/C9500
USER’S GUIDE — WINDOWS 2000
l

PREFACE > 2
Every effort has been made to ensure that the information in this document is complete,
accurate, and up-to-date. The manufacturer assumes no responsibility for the results of
errors beyond its control. The manufacturer also cannot guarantee that changes in
software and equipment made by other manufacturers and referred to in thisGuide will
not affect the applicability of the information in it. Mention of software products
manufactured by other companies does not necessarily constitute endorsement by the
manufacturer.
While all reasonable efforts have been made to make this document as accurate and
helpful as possible, we make no warranty of any kind, expressed or implied, as to the
accuracy or completeness of the information contained herein.
The most up-to-date drivers and manuals are available from the Oki Europe website:
http://www.okieurope.com
Copyright © 2005. All rights reserved.
Oki and Microline are registered trademarks of Oki Electric Industry Company Ltd.
Energy Star is a trademark of the United States Environmental Protection Agency.
Hewlett-Packard, HP, and LaserJet are registered trademarks of Hewlett-Packard
Company.
Microsoft, MS-DOS and Windows are registered trademarks of Microsoft Corporation.
Apple, Macintosh and Mac OS are registered trademarks of Apple Computers Inc.
Other product names and brand names are registered trademarks or trademarks of
their proprietors.
As an Energy Star Program Participant, the manufacturer has
determined that this product meets the Energy Star guidelines for
energy efficiency.
This product complies with the requirements of the Council Directives
89/336/EEC (EMC) and 73/23/EEC (LVD) as amended where applicable
on the approximation of the laws of the member states relating to
electromagnetic compatibility and low voltage.
Warning: This product complies with EN55022 Class B. However, when fitted with
the optional Finisher and/or Scancopier, compliance to EN55022 is Class A. In a
domestic environment this configuration may cause radio interference, in which
case the user may be required to take adequate measures.

CONTENTS > 3
CONTENTS
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Using this manual. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Online usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Printing pages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Getting started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
CD-ROM disk contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
CD1 - Drivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
CD2 - Manuals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
CD3 - Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
CD4 - Print Control Software. . . . . . . . . . . . . . . . . . . . . . 15
Printer location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Printer components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Setting up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Packaging and protective sheet removal . . . . . . . . . . . . . . 19
Toner cartridge installation . . . . . . . . . . . . . . . . . . . . . . . . . 24
Loading paper. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Manual feed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Power connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Control panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Menu settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Changing the display language . . . . . . . . . . . . . . . . . . . 35
Confirmation printout . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Paper feed, size and media . . . . . . . . . . . . . . . . . . . . . . 36
Paper, envelope types, transparencies
and adhesive labels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Paper feed and exit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Paper Sizes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Paper weights and media settings. . . . . . . . . . . . . . . . . 42
Printer settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Confirming current settings . . . . . . . . . . . . . . . . . . . . . . 44
Changing the settings. . . . . . . . . . . . . . . . . . . . . . . . . . . 44
List of menu settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Switching off. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

CONTENTS > 4
Printer drivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .70
Which printer driver? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Installed options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Additional memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Internal hard disk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Duplex unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Additional paper trays . . . . . . . . . . . . . . . . . . . . . . . . . . 78
High capacity feeder. . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
Paper feed, size and media - defaults. . . . . . . . . . . . . . . . . 82
Printer driver network extension . . . . . . . . . . . . . . . . . . 88
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .89
Colour Printing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
Factors that affect the appearance of prints . . . . . . . . . 89
Choosing a Colour Matching Method . . . . . . . . . . . . . . . . . 92
RGB or CMYK? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Matching Photographic Images . . . . . . . . . . . . . . . . . . . 92
Matching Specific Colours . . . . . . . . . . . . . . . . . . . . . . . 93
Printing Vivid Colours . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
PCL Driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Colour Matching Options . . . . . . . . . . . . . . . . . . . . . . . . 94
Colour Swatch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
PostScript Driver. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
Colour Matching Options . . . . . . . . . . . . . . . . . . . . . . . . 96
Oki Colour Matching . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
PostScript Colour Matching . . . . . . . . . . . . . . . . . . . . . . 97
CMYK Ink Simulation . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Windows ICM Colour Matching . . . . . . . . . . . . . . . . . . . 98
Using ICC Profiles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
Multiple pages on one sheet . . . . . . . . . . . . . . . . . . . . . . .107
Custom page sizes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
Print resolution. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
Duplex printing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
Printing booklets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .118
Printing watermarks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
Collating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124
Font substitution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .125
Printing the font list . . . . . . . . . . . . . . . . . . . . . . . . . . .127

CONTENTS > 5
Proof and print . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128
Printing copies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
Deleting copies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130
Secure printing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
Confidential printing. . . . . . . . . . . . . . . . . . . . . . . . . . .132
Deleting confidential print jobs . . . . . . . . . . . . . . . . . . 133
Store to hard disk. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .134
Printing copies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
Deleting copies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136
Overlay printing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137
Creating documents to use as overlays. . . . . . . . . . . . 138
Downloading the print file to use as an overlay . . . . .140
Defining overlays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141
Printing posters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .150
Adding Paper. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
Changing the toner cartridge. . . . . . . . . . . . . . . . . . . . . . . 152
Changing the image drum . . . . . . . . . . . . . . . . . . . . . . . . . 157
Changing the transfer belt . . . . . . . . . . . . . . . . . . . . . . . . . 162
Changing the fuser unit . . . . . . . . . . . . . . . . . . . . . . . . . . .164
Cleaning the LED head . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166
Transporting the printer . . . . . . . . . . . . . . . . . . . . . . . . . . . 168
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .169
LCD messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .169
Paper jams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172
In the paper tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172
Behind the right side cover . . . . . . . . . . . . . . . . . . . . . 173
On the transfer belt. . . . . . . . . . . . . . . . . . . . . . . . . . . . 174
Behind the left side cover. . . . . . . . . . . . . . . . . . . . . . . 175
In the fuser unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176
In the duplex unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
In any additional paper trays . . . . . . . . . . . . . . . . . . . . 179
Parallel transmission mode . . . . . . . . . . . . . . . . . . . . . . . . 180
Problem solving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181
Paper feed problems. . . . . . . . . . . . . . . . . . . . . . . . . . .181
Paper jam has been cleared, but printer does
not print. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181

CONTENTS > 6
Printing from Windows. . . . . . . . . . . . . . . . . . . . . . . . . . . . 182
Cannot configure for parallel connection. . . . . . . . . . . 182
Cannot configure for USB connection.. . . . . . . . . . . . .182
Printout is garbled or incorrect
with parallel connection. . . . . . . . . . . . . . . . . . . . . . . 183
Cannot print. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183
Application error or general protection
fault is displayed. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184
Insufficient memory.. . . . . . . . . . . . . . . . . . . . . . . . . . . 184
Printing is slow.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184
Printer requests paper size change to
continue printing. . . . . . . . . . . . . . . . . . . . . . . . . . . . .184
Unclear printing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185
Miscellaneous. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .187
The power is on, but the printer does not
go online. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187
Print processing does not start.. . . . . . . . . . . . . . . . . . 187
Print processing cancels. . . . . . . . . . . . . . . . . . . . . . . . 187
Printer makes a strange noise. . . . . . . . . . . . . . . . . . . 187
It takes a long time to start printing. . . . . . . . . . . . . . . 188
Toner rubs off when you rub the printed
surface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .188
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .189
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .189
Additional memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
Internal hard disk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193
Duplex unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
Additional paper trays . . . . . . . . . . . . . . . . . . . . . . . . . . . . 199
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 199
High capacity feeder. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201
Copier unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203
Finisher . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .206
External dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 209
Consumables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .210

CONTENTS > 7
Factory default settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .211
Print menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 211
Media menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 212
Colour menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 212
System Config menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 212
PCL Emulation menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 213
PPR Emulation menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 213
FX Emulation menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 214
Parallel menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 214
USB menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 214
Network menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215
Memory menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .215
Disk Maintenance menu. . . . . . . . . . . . . . . . . . . . . . . . . . . 215
System Adjust menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 216
Maintenance menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 216
Index. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .217
Oki contact details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .219

PREFACE > 8
NOTES, CAUTIONS AND WARNINGS
NOTE
A note appears in this manual like this. A note provides additional
information to supplement the main text which may help you to use and
understand the product.
CAUTION!
A caution appears in this manual like this. A caution provides
additional information which, if ignored, may result in equipment
malfunction or damage.
WARNING!
A warning appears in this manual like this. A warning provides
additional information which, if ignored, may result in a risk of
personal injury.

INTRODUCTION > 9
INTRODUCTION
Congratulations on purchasing this colour printer!
In this chapter you will find a summary of the main features of your
printer followed by some advice on how to use this User’s Guide to get
the most from your printer.
FEATURES
>Five different models to choose from: C9300n, C9300dn,
C9300n, C9300dn,C9300n, C9300dn,
C9300n, C9300dn,
C9300hdn, C9500dn, C9500hdn.
C9300hdn, C9500dn, C9500hdn.C9300hdn, C9500dn, C9500hdn.
C9300hdn, C9500dn, C9500hdn.
>High speed printing:
A4: 30 pages per minute (PPM) LED colour, 37 pages per
minute LED monochrome.
A3: 16 pages per minute LED colour, 20 pages per minute LED
monochrome.
>Booklet printing.
>Single pass digital technology for high quality, speed and
reliability.
>True 1200 dpi resolution (C9500) or 600 x 1200 dpi resolution
(C9300) for very high quality output.
>Duplex printing for fast reliable two sided output (standard on
C9300dn, C9300hdn, C9500dn and C9500hdn, optional on all
other models).
>High speed, bi-directional parallel interface (IEEE-1284) and
USB interface .
>Industry standard network connectivity via internal network
interface card.
>Automatic interface switching between USB, parallel and
network interfaces.
>High capacity 10 Gb hard disk drive (standard on hdn models,
optional on others).
>PCL5c emulation and genuine Adobe PostScript 3 with
automatic switching.
>Versatile paper handling with standard 550 sheet (approx.)
paper tray and 100 sheet (approx.) multi purpose tray.

INTRODUCTION > 10
>Optional 2nd and 3rd paper trays each with a capacity of 550
sheets (approx.) and an optional high capacity feeder (instead
of 3rd tray) that can provide a feed of 1650 sheets (approx.)
giving a maximum capacity of 2850 sheets (approx.).
>Paper weight capacity of 64 g/m² to 203 g/m².
>Standard multi purpose tray for card stock, envelopes etc.
>500 sheet output tray (face down) and 100 sheet face up tray
for continuous smooth running output.
>Environmentally friendly: the advanced power save mode
minimises power consumption and the separate toner and
drum design cuts down on waste.
>Automatic colour balance adjustment: in order to ensure
consistent output at all times, the machine automatically
performs a colour check when the machine is switched on,
when the top cover is opened and then closed, and adjusts the
colour balance automatically. It can even be set to adjust the
colour balance during long print runs.
>Auto media detect: detects the weight of the media being fed
through the printer then automatically adjusts the fusing
temperature, speed (if necessary) and transfer voltage to
ensure correct fusing and print quality.
>Your printer is one of the C9300/C9500 family of colour
printers, configured as in the following table:
Model Network
card
Duplex Unit Memory Hard
disK
Additional
Trays
C9300n Standard Option (may require
additional memory).
128Mb Option Option
C9300dn Standard Standard. 192Mb Option Option
C9300hdn Standard Standard 192Mb Standard Option
C9500dn Standard Standard 320Mb Option Option
C9500hdn Standard Standard 320Mb Standard option

INTRODUCTION > 11
USING THIS MANUAL
This manual will lead you logically through the unpacking, setting up
and operation of your printer to help you to make the best use of its
many advanced features. Also included are guidelines for
troubleshooting and maintenance to ensure that it continues to
perform at its best. Instructions are provided for adding optional
accessories as your needs evolve.
>The User’s Guide has been written using one printer as a
model, and the illustrations/screenshots reflect this. What
you see will be appropriate to the model you are installing.
>The User’s Guide has been designed to provide you with a
clear presentation on the installation and maintenance of your
new printer. This information is compiled in the logical
sequence required to result in a successful installation.
ONLINE USAGE
This manual is intended to be read on screen using Adobe Acrobat
Reader. Use the navigation and viewing tools provided in Acrobat.
You can access specific information in two ways:
>In the list of bookmarks down the left hand side of your
screen, click on the topic of interest to jump to the required
topic. (If the bookmarks are not available, use the Table of
Contents.)
>In the list of bookmarks click on Index to jump to the Index. (If
the bookmarks are not available, use the Table of Contents.)
Find the term of interest in the alphabetically arranged index
and click on the associated page number to jump to the page
containing the subject.
NOTE
The information in this manual is supplemented by the extensive online
help facility associated with the printer driver software.

INTRODUCTION > 12
PRINTING PAGES
The whole manual, individual pages, or sections may be printed. The
procedure is:
1. From the toolbar, select [File], then [Print] (or press the
Ctrl + P keys).
2. Choose which pages you wish to print:
(a) [All pages], for the entire manual
(b) [Current page]
for the page at which you are looking
(c) [Pages from] and [to] for the range of pages you specify
by entering their page numbers.
3. Click on [OK].
..
.

GETTING STARTED > 13
GETTING STARTED
UNPACKING
After unpacking the printer and choosing a suitable place to put it,
check that all the necessary parts are available to continue:
1. The printer.
2. 4 toner cartridges (cyan, magenta, yellow and black).
3. CD-ROM disks containing printer drivers,network software and
documentation (see following page for contents).
4. LED lens cleaner (not illustrated).
5. Light proof plastic bags (not illustrated).
6. 2 Power cables (UK and European).
7. Setup Guide (not illustrated).
Retain all packing materials to faciliate transport.
WARNING!
This printer has a weight of 72 kg. 3 people are required to lift the
printer safely.

GETTING STARTED > 14
CD-ROM DISK CONTENTS
The CD-ROM disks supplied with your printer contain the following
software:
CD1 - DRIVERS
>Oki LPR
>CD Install
>Oki Template
>Storage Device Manager
>PDF Direct Printing
>Printer Drivers (all languages)
The software utilities are described briefly in the Help facility on the
CD and can be installed as required. They each have extensive on-line
Help facilities.
CD2 - MANUALS
>Printer User’s Guide
>Networking User’s Guide
CD3 - NETWORK
>PrintSuperVision
>NDPS
>Net Installer
>Oki LPR
>CD Install
>Web Jet Admin
>Oki Template Manager
>Storage Device Manager
>PDF Direct Printing
>Networking User’s Guide

GETTING STARTED > 15
CD4 - PRINT CONTROL SOFTWARE
>Print Control software
PRINTER LOCATION
Place the printer on a flat surface large enough and strong enough to
accept the size and weight of the printer. There must be sufficient
space around the printer to allow for access and printer maintenance.
100cm
60cm 20cm
60cm
70cm
72kg
72
Kg.

GETTING STARTED > 16
PRINTER COMPONENTS
1. Top cover
2. Control panel
3. Top cover release catch
4. Multi purpose tray (manual feed)
5. Paper support extension
6. Paper guides
7. Right side cover
8. Paper tray
9. Paper level indicator
10. Power switch

GETTING STARTED > 17
11. LED heads (4)
12. Discharge roller
13. Fuser unit
14. Image drum (cyan)
15. Image drum (magenta)
16. Image drum (yellow)
17. Image drum (black)

GETTING STARTED > 18
18. Power connector
19. Side exit paper tray
20. Interfaces and card slot
21. USB interface connector
22. Parallel interface connector
23. Network interface card

SETTING UP > 19
SETTING UP
Before connecting this printer to a computer and power supply, the
toner cartridges must be installed and paper inserted in the paper
tray.
PACKAGING AND PROTECTIVE SHEET REMOVAL
1. Remove any adhesive tape and packaging from the printer.
2. Using the release handle, open the top cover.

SETTING UP > 20
3. Remove the LED head restrainer from behind the LED heads in
the top cover.