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CAUTION

To avoid print quality problems, DO NOT touch the shaded parts shown in the illustrations.

Troubleshooting and routine maintenance

o Turn the drum unit over by holding the green handles. Make sure that the drum unit gears (1) are on the left hand side.

p See the print sample to identify the color causing the problem. The color of the spots or toner stain is the color of the drum you should clean. For example, if the spots are cyan, you should clean the drum for cyan. Put the print sample in front of the drum, and the find the exact position of the poor print.

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Contents

USER’S Guide If you need to call Customer Service Brother numbers FAQs frequently asked questionsRegister your product Service Center Locator USA only For Customer ServiceService Center Locations Canada only Canada Ordering accessories and suppliesDescription Iii Compilation and Publication Notice USA and Canada What is the length of the Warranty Periods What is coveredWhat is not covered Who is covered What you must provide What Brother will doLimitations Vii Canada only Table of Contents Sending a fax Section II Fax Telephone services and external devices Section IV Walk-up printing Section III Copy Section VI Appendixes Section V SoftwareXii Xiii Troubleshooting and routine maintenance 114 Xiv Specifications 224 General Accessing the User’s Guides Using the documentationGeneral information Bold Viewing documentation How to find scanning instructionsViewing documentation Windows Software Users Guide Presto! PageManager Users Guide Accessing Brother support For Windows Control panel overview Resolution Mode keys FaxCopy keys Contrast/Quality Enlarge/Reduce Print keys Direct Job CancelSecure LED Status Status LED indications Again Machine Status Description Acceptable paper and other media Loading paper and documentsRecommended paper Type and size of paper Paper capacity of the paper trays Recommended paper specificationsTray and optional unit Name Paper size Paper types No. of sheets Types of paper to avoid Handling and using special paperMm or greater Feeding direction Envelopes Types of envelopes to avoid Unprintable area for copies Unprintable areaLabels Types of labels to avoid Portrait Loading paper and envelopesLandscape 16 in .23 mm Loading plain paper in the paper tray Loading paper and documents Loading documents Using the ADF automatic document feederSingle-sided document Sided document Using the scanner glass Mode timer General setupPaper settings Paper type Paper size Tray use in copy mode Tray use in print mode Tray use in fax mode Ring volume Volume settingsBeeper volume Speaker volume Automatic daylight savings time Ecology featuresToner save Sleep time Dial Prefix LCD contrast Setting lock Security featuresSetting up the password Changing your setting lock password Turning setting lock on Turning setting lock on/offTurning setting lock off Secure Function Lock Setting up the Public user Setting the password for the administrator Turning Secure Function Lock on/off Setting up restricted usersTurning Secure Function Lock on Turning Secure Function Lock off When Copy mode is disabled Switching UsersWhen Scan mode is disabled Fax Entering fax mode How to faxSending a fax Sending a single-sided fax from the ADF Changing a 2-sided fax layout Sending a fax from the scanner glassLong edge Short edge Broadcasting black & white only Canceling a fax in progressUse the Search/Speed Dial to help you choose numbers easily Canceling a broadcast in progress Sending faxes using multiple settingsAdditional sending operations Send a cover page for the next fax Composing your own comments Contrast Using a printed coverSend a cover page for all faxes Dual access Black & white only Changing fax resolutionTo change the fax resolution for the next fax To change the default fax resolution Delayed fax Black & white only Overseas modeReal time transmission Sending in real time for all faxes Delayed batch transmission black & white only Checking and canceling waiting jobs Out of memory message Sending a fax manuallyManual transmission Sending a fax at the end of a conversation Receiving a fax Choose the correct Receive ModeDo you expect to receive very few faxes? Fax Only Using receive modesFax/Tel Manual Ring delay Receive mode settingsRing time Easy receive Setting the print density Additional receiving operations Duplex 2-sided printing for Fax modePrinting a reduced incoming fax Receiving a fax at the end of a conversation Setting the fax receive stamp black & white onlyPrinting a fax from the memory Press Black Start or Color Start Press Stop/Exit Telephone line services Telephone services and external devicesVoice Mail What does your telephone company’s ‘Distinctive Ring’ do? Distinctive ringDo you have voice mail? What does Brother’s ‘distinctive ring’ do? Registering the distinctive ring pattern Very important Before you choose the ring pattern to registerRing Rings Pattern Turning off distinctive ring Connecting an external TAD telephone answering device Special line considerations ConnectionsRoll over telephone lines Converting telephone wall outlets Two-line telephone system External and extension telephones For Fax/Tel mode onlyMulti-line connections PBX Operation from extension telephones Using a non-Brother cordless external handset Connecting an external or extension telephoneUsing remote codes Dialing and storing numbers How to dialManual dialing One-touch dialing Ldap Search SearchFax redial Press Search/Speed Dial Storing a pause Storing numbersStoring one-touch dial numbers Fax/Tel. Press OK Storing speed-dial numbers Changing one-touch and speed-dial numbers Setting up groups for broadcasting Pause Dialing access codes and credit card numbersTone or pulse Canada only Fax forwarding Remote fax options black & white onlyRemote fax options are not available for color fax Fax storage Paging0 0 5 5 5 1 2 3 4 # # # # PC Fax Msg001 PC fax receive Turning off remote fax options Changing remote fax options Using your remote access code Setting a remote access codeRemote retrieval Changing the fax forwarding number Retrieving fax messages Change the receive mode Remote fax commandsRetrieve a fax Check the receiving status Polling receive PollingSequential polling Polled transmit black & white only Setup for polled transmit Fax reports Printing reportsTransmission verification report Fax journal Reports How to print a reportPress Black Start or Color Start. d Press Stop/Exit Chapter Copy Making copies How to copy Improving copy quality Copy options temporary settingsEnlarging or reducing the image copied Press Contrast/Quality Making N in 1 copies page layout If you are using the scanner glass, go to gPress Enlarge/Reduce Press Black Start or Color Start to scan Duplex Copy long edge Duplex 2-sided copying„ 2 in 1 P „ 2 in 1 L „ 4 in 1 P „ 4 in 1 L „ 2 in 1 P „ 2 in 1 L „ 4 in 1 P Advanced Duplex Copy short edge Brightness Sorting copies using the ADF Color saturation Contrast Tray selection Out of memory messagePress Tray Select Press Tray Select Chapter Walk-up printing Using PictBridge Before using PictBridgeSetting your digital camera Printing photos from a digital camera Printing images Machine settings Default settings Understanding the error messages Connecting a camera as a storage deviceDpof printing Supported file formats Printing data from a USB flash memory driveCreating a PRN or PostScript 3 file for direct printing Printing data directly from the USB flash memory drive Press Black Start or Color Start to print the data Press Black Start or Color Start if you have finished Chapter Software How to read Html User’s Guide Software and network featuresFor Windows For Macintosh 114 110204 224 Choosing a location Safety and legal To use the machine safely 100 101 Important Safety Instructions Standard telephone and FCC notices Important information102 103 104 Important-about the interface cable Industry Canada Compliance Statement Canada only Laser safetyDisconnect device LAN connection FDA regulations Important safety instructionsManufactured 106 107 108 Legal limitations for copying 109 Trademarks Options OptionsLower tray unit Dimm memory 110 Optional paper tray Installing the optional paper tray111 For Macintosh users Memory board112 113 Installing extra memory Troubleshooting Troubleshooting and routine maintenanceIf you are having difficulty with your machine Printing or receiving faxes Sending faxes Telephone line or connectionsHandling incoming calls 115 Copy quality difficulties Menu access difficultiesPrinting difficulties 116 Software difficulties Scanning difficulties117 Print quality difficulties Paper handling difficultiesNetwork difficulties 118 119 Network difficulties 120 Firewall and click Change settings Examples of poor print Recommendation Quality Improving the print quality121 122 Toner cartridge on 123 Examples of poor print quality 124 125 Enter the correction value on the chart. Press Menu, 4, 8 Improve pattern printing or Improve Thin Line boxes Device Options, Print Setting, and then check126 127 Choosing a location on 128 Curled or wave 129 Abcdefg 130 Steps 131 Examples of poor print Recommendation Quality Telephone line interference Setting dial tone detection132 Error Message Cause Action Error and maintenance messagesPress Black Start or Color Start and try it 133 134 Waste Toner Box 135 Document Jam „ Press Black Start or Color Start to send or Fax sending or copy operation in progressPrint operation in process 136 Press Stop/Exit Press Black Start or Color Start and try again137 138 Toner Low Transferring faxes to your PC Checking if the machine has faxes in its memoryTransferring faxes to another fax machine 139 Document is jammed in the top of the ADF unit Document jamsDocument is jammed under the document cover Document is jammed at the output tray Document is jammed in the duplex slot Paper jamsPaper is jammed in the MP tray 141 142 Paper is jammed in Paper Tray 1 or Tray 143 Paper is jammed inside the machine 144 145 146 147 148 Paper is jammed at the back of the machine 149 150 Paper is jammed underneath Paper Tray 1 or in the fuser unit 151 Cleaning the outside of the machine Routine maintenanceClean the outside of the machine as follows 152 153 Cleaning the scanner 154 Cleaning the laser scanner windows 155 156 157 158 Cleaning the corona wires Troubleshooting and routine maintenance 160 Cyan Magenta Yellow Black 161 Cleaning the drum unit 162 163 164 165 166 Cyan Magenta Yellow Black 167 168 Push the drum unit in until it stops 169 Replacing the consumable items Toner Low 170 PF Kit MP 171 Toner low message Replacing a toner cartridgeToner life end message 172 173 Replacing the toner cartridges 174 175 Cyan Magenta Yellow Black 176 Change Parts Drum message Replacing the drum unitReplacing the drum unit 177 178 179 180 Cyan Magenta Yellow Black 181 182 Change Parts Belt Unit message Replacing the belt unitReplacing the belt unit 183 184 185 186 187 Change Parts Waste Toner Box message Replacing the waste toner boxWaste Toner Box Full message Replacing the waste toner box 189 190 191 192 193 194 Packing and shipping the machine Repacking the machine 196 197 198 199 200 201 Checking the serial number Machine informationChecking the page counters 202 203 Checking the remaining life of parts On-screen Menu keys Programming Menu and featuresMenu table Memory storage 205 How to access the menu mode 206 Menu table 207 Nnonn+ 208 209 Ring Delay Print Sample 210 Every 50 Faxes 211 Printer Emulation Auto 212 Printer Duplex Off 213 1in1 214 215 Resolution Color 150 dpi Alphabetic 216 TCP/IP 217 LAN Wlan TCP/IP 218 Ifax 219 Mail 220 Info 221 Inserting spaces Entering textMaking corrections Repeating letters 223 Special characters and symbols Weight Without Drum/Toner Unit 73.2 lb 33.3 kg SpecificationsGeneral 224 Noise level TemperatureHumidity 225 Paper Input Paper Tray Print mediaDuplex 226 Fax Copy Speed Copy Speed for Duplex Copying CopyColor/Monochrome Single-Sided Document Size 228 Scan Print LAN cable Wireless LANInterfaces 230 Interface Direct print feature231 Computer requirements Consumable items Network board model name Ethernet wired networkSupport for Protocols Network type Management utilities 234 235 Ethernet wireless network Authentication method Authentication and encryption for wireless users onlyEncryption methods 236 Network key Wi-Fi Alliance certification237 Glossary Fine resolution ECM Error Correction ModeMenu mode Easy Receive Remote Access Code Overseas ModeRemote Retrieval Access Ring Delay Temporary settings Telephone Answer Code Fax/Tel mode onlyUser Settings List Tone 242 Index 243 Telephone answer code Fax forwarding 244 Fax/Tel mode Answering at extension 245 246 Reports Fax Journal 247 Equipment Attachment Limitations Visit us on the World Wide Web

Brother MFC-9840CDW manual 165

Models: MFC-9840CDW

Troubleshooting and routine maintenance

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