Troubleshooting and routine maintenance | Brother MFC-9840CDW

CAUTION

We recommend that you place the toner cartridges on a clean, flat surface with a piece of disposable paper underneath it in case you accidentally spill or scatter toner.

DO NOT put a toner cartridge into a fire. It could explode, resulting in injuries.

Handle the toner cartridges carefully. If toner scatters on your hands or clothes, wipe or wash it off with cold water at once.

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

Troubleshooting and routine maintenance

e Push to release the latches of the white corona wire cover (1), and then open the cover.

1

C

2

1

Note

We recommended that you clean the corona wire for each of the colors. If you want to clean only the corona wire of the color that caused the print quality problem, see the illustration below to identify the position of each of the corona wires.

1 2 3 4

1Corona wire cover for Black (K)

2Corona wire cover for Yellow (Y)

3Corona wire cover for Magenta (M)

4Corona wire cover for Cyan (C)

159

Image 175

Brother MFC-9840CDW manual Troubleshooting and routine maintenance

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 Iii Ordering accessories and suppliesCanada Description Compilation and Publication Notice USA and Canada Who is covered What is coveredWhat is the length of the Warranty Periods What is not 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 Bold Using the documentationAccessing the User’s Guides General information Software Users Guide How to find scanning instructionsViewing documentation Viewing documentation Windows Presto! PageManager Users Guide Accessing Brother support For Windows Control panel overview Enlarge/Reduce Mode keys FaxResolution Copy keys Contrast/Quality Print keys Direct Job CancelSecure LED Status Status LED indications Again Machine Status Description Type and size of paper Loading paper and documentsAcceptable paper and other media Recommended paper Paper size Paper types No. of sheets Recommended paper specificationsPaper capacity of the paper trays Tray and optional unit Name Types of paper to avoid Handling and using special paperMm or greater Feeding direction Envelopes Types of envelopes to avoid Types of labels to avoid Unprintable areaUnprintable area for copies Labels 16 in .23 mm Loading paper and envelopesPortrait Landscape Loading plain paper in the paper tray Loading paper and documents Sided document Using the ADF automatic document feederLoading documents Single-sided document Using the scanner glass Paper type General setupMode timer Paper settings Paper size Tray use in copy mode Tray use in print mode Tray use in fax mode Speaker volume Volume settingsRing volume Beeper volume Sleep time Ecology featuresAutomatic daylight savings time Toner save Dial Prefix LCD contrast Changing your setting lock password Security featuresSetting lock Setting up the password Secure Function Lock Turning setting lock on/offTurning setting lock on Turning setting lock off Setting up the Public user Setting the password for the administrator Turning Secure Function Lock off Setting up restricted usersTurning Secure Function Lock on/off Turning Secure Function Lock on When Copy mode is disabled Switching UsersWhen Scan mode is disabled Fax Sending a single-sided fax from the ADF How to faxEntering fax mode Sending a fax Short edge Sending a fax from the scanner glassChanging a 2-sided fax layout Long 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 To change the default fax resolution Changing fax resolutionDual access Black & white only To change the fax resolution for the next fax Sending in real time for all faxes Overseas modeDelayed fax Black & white only Real time transmission Delayed batch transmission black & white only Checking and canceling waiting jobs Sending a fax at the end of a conversation Sending a fax manuallyOut of memory message Manual transmission Receiving a fax Choose the correct Receive ModeDo you expect to receive very few faxes? Manual Using receive modesFax Only Fax/Tel 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 Press Black Start or Color Start Press Stop/Exit Setting the fax receive stamp black & white onlyReceiving a fax at the end of a conversation Printing a fax from the memory Telephone line services Telephone services and external devicesVoice Mail What does Brother’s ‘distinctive ring’ do? Distinctive ringWhat does your telephone company’s ‘Distinctive Ring’ do? Do you have voice mail? 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 Operation from extension telephones For Fax/Tel mode onlyExternal and extension telephones Multi-line connections PBX Using a non-Brother cordless external handset Connecting an external or extension telephoneUsing remote codes One-touch dialing How to dialDialing and storing numbers Manual dialing Press Search/Speed Dial SearchLdap Search Fax redial 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 # # PagingFax storage 0 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 Check the receiving status Remote fax commandsChange the receive mode Retrieve a fax Polling receive PollingSequential polling Polled transmit black & white only Setup for polled transmit Fax journal Printing reportsFax reports Transmission verification report Reports How to print a reportPress Black Start or Color Start. d Press Stop/Exit Chapter Copy Making copies How to copy Press Contrast/Quality Copy options temporary settingsImproving copy quality Enlarging or reducing the image copied Press Black Start or Color Start to scan If you are using the scanner glass, go to gMaking N in 1 copies page layout Press Enlarge/Reduce „ 2 in 1 P „ 2 in 1 L „ 4 in 1 P Duplex 2-sided copyingDuplex Copy long edge „ 2 in 1 P „ 2 in 1 L „ 4 in 1 P „ 4 in 1 L Advanced Duplex Copy short edge Brightness Sorting copies using the ADF Color saturation Contrast Press Tray Select Out of memory messageTray selection Press Tray Select Chapter Walk-up printing Printing photos from a digital camera Before using PictBridgeUsing PictBridge Setting your 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 For Macintosh Software and network featuresHow to read Html User’s Guide For Windows 224 110114 204 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 LAN connection Laser safetyIndustry Canada Compliance Statement Canada only Disconnect device 106 Important safety instructionsFDA regulations Manufactured 107 108 Legal limitations for copying 109 Trademarks 110 OptionsOptions Lower tray unit Dimm memory Optional paper tray Installing the optional paper tray111 For Macintosh users Memory board112 113 Installing extra memory Printing or receiving faxes Troubleshooting and routine maintenanceTroubleshooting If you are having difficulty with your machine 115 Telephone line or connectionsSending faxes Handling incoming calls 116 Menu access difficultiesCopy quality difficulties Printing difficulties Software difficulties Scanning difficulties117 118 Paper handling difficultiesPrint quality difficulties Network difficulties 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 133 Error and maintenance messagesError Message Cause Action Press Black Start or Color Start and try it 134 Waste Toner Box 135 Document Jam 136 Fax sending or copy operation in progress„ Press Black Start or Color Start to send or Print operation in process Press Stop/Exit Press Black Start or Color Start and try again137 138 Toner Low 139 Checking if the machine has faxes in its memoryTransferring faxes to your PC Transferring faxes to another fax machine Document is jammed at the output tray Document jamsDocument is jammed in the top of the ADF unit Document is jammed under the document cover 141 Paper jamsDocument is jammed in the duplex slot Paper is jammed in the MP tray 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 151 152 Routine maintenanceCleaning the outside of the machine Clean the outside of the machine as follows 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 171 172 Replacing a toner cartridgeToner low message Toner life end message 173 Replacing the toner cartridges 174 175 Cyan Magenta Yellow Black 176 177 Replacing the drum unitChange Parts Drum message Replacing the drum unit 178 179 180 Cyan Magenta Yellow Black 181 182 183 Replacing the belt unitChange Parts Belt Unit message Replacing the belt unit 184 185 186 187 Replacing the waste toner box Replacing the waste toner boxChange Parts Waste Toner Box message Waste Toner Box Full message 189 190 191 192 193 194 Packing and shipping the machine Repacking the machine 196 197 198 199 200 201 202 Machine informationChecking the serial number Checking the page counters 203 Checking the remaining life of parts Memory storage Menu and featuresOn-screen Menu keys Programming Menu table 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 Repeating letters Entering textInserting spaces Making corrections 223 Special characters and symbols 224 SpecificationsWeight Without Drum/Toner Unit 73.2 lb 33.3 kg General 225 TemperatureNoise level Humidity 226 Print mediaPaper Input Paper Tray Duplex Fax 228 CopyCopy Speed Copy Speed for Duplex Copying Color/Monochrome Single-Sided Document Size Scan 230 LAN cable Wireless LANPrint Interfaces Interface Direct print feature231 Computer requirements Consumable items 234 Ethernet wired networkNetwork board model name Support for Protocols Network type Management utilities 235 Ethernet wireless network 236 Authentication and encryption for wireless users onlyAuthentication method Encryption methods Network key Wi-Fi Alliance certification237 Glossary Easy Receive ECM Error Correction ModeFine resolution Menu mode Ring Delay Overseas ModeRemote Access Code Remote Retrieval Access Tone Telephone Answer Code Fax/Tel mode onlyTemporary settings User Settings List 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