Cleaning the corona wires, 158 | Brother MFC-9840CDW guide

Cleaning the corona wires

If you have print quality problems, clean the corona wires as follows:

a Turn off the machine’s power switch. Unplug the telephone line cord first, disconnect all cables, and then unplug the power cord from the AC power outlet.

b Press the front cover release button and then open the front cover.

c Hold the green handle of the drum unit. Lift the drum unit up and then pull it out until it stops.

d Hold the handle of the toner cartridge and pull it out of the drum unit. Repeat this for all the toner cartridges.

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Brother MFC-9840CDW manual Cleaning the corona wires, 158

Contents

USER’S Guide If you need to call Customer Service FAQs frequently asked questions Brother numbersRegister your product For Customer Service Service Center Locator USA onlyService Center Locations Canada only Description Ordering accessories and suppliesCanada Iii USA and Canada Compilation and Publication Notice What is not covered What is coveredWhat is the length of the Warranty Periods Who is covered What Brother will do What you must provideLimitations Canada only Vii Table of Contents Section II Fax Sending a fax Telephone services and external devices Section III Copy Section IV Walk-up printing Section V Software Section VI AppendixesXii Troubleshooting and routine maintenance 114 Xiii Specifications 224 Xiv General General information Using the documentationAccessing the User’s Guides Bold Viewing documentation Windows How to find scanning instructionsViewing documentation Software Users Guide Presto! PageManager Users Guide Accessing Brother support For Windows Control panel overview Copy keys Contrast/Quality Mode keys FaxResolution Enlarge/Reduce Job Cancel Print keys DirectSecure Status LED indications LED Status Machine Status Description Again Recommended paper Loading paper and documentsAcceptable paper and other media Type and size of paper Tray and optional unit Name Recommended paper specificationsPaper capacity of the paper trays Paper size Paper types No. of sheets Handling and using special paper Types of paper to avoidMm or greater Envelopes Feeding direction Types of envelopes to avoid Labels Unprintable areaUnprintable area for copies Types of labels to avoid Landscape Loading paper and envelopesPortrait 16 in .23 mm Loading plain paper in the paper tray Loading paper and documents Single-sided document Using the ADF automatic document feederLoading documents Sided document Using the scanner glass Paper settings General setupMode timer Paper type Tray use in copy mode Paper size Tray use in fax mode Tray use in print mode Beeper volume Volume settingsRing volume Speaker volume Toner save Ecology featuresAutomatic daylight savings time Sleep time LCD contrast Dial Prefix Setting up the password Security featuresSetting lock Changing your setting lock password Turning setting lock off Turning setting lock on/offTurning setting lock on Secure Function Lock Setting the password for the administrator Setting up the Public user Turning Secure Function Lock on Setting up restricted usersTurning Secure Function Lock on/off Turning Secure Function Lock off Switching Users When Copy mode is disabledWhen Scan mode is disabled Fax Sending a fax How to faxEntering fax mode Sending a single-sided fax from the ADF Long edge Sending a fax from the scanner glassChanging a 2-sided fax layout Short edge Canceling a fax in progress Broadcasting black & white onlyUse the Search/Speed Dial to help you choose numbers easily Sending faxes using multiple settings Canceling a broadcast in progressAdditional sending operations Composing your own comments Send a cover page for the next fax Using a printed cover ContrastSend a cover page for all faxes To change the fax resolution for the next fax Changing fax resolutionDual access Black & white only To change the default fax resolution Real time transmission Overseas modeDelayed fax Black & white only Sending in real time for all faxes Checking and canceling waiting jobs Delayed batch transmission black & white only Manual transmission Sending a fax manuallyOut of memory message Sending a fax at the end of a conversation Choose the correct Receive Mode Receiving a faxDo you expect to receive very few faxes? Fax/Tel Using receive modesFax Only Manual Receive mode settings Ring delayRing time Setting the print density Easy receive Duplex 2-sided printing for Fax mode Additional receiving operationsPrinting a reduced incoming fax Printing a fax from the memory Setting the fax receive stamp black & white onlyReceiving a fax at the end of a conversation Press Black Start or Color Start Press Stop/Exit Telephone services and external devices Telephone line servicesVoice Mail Do you have voice mail? Distinctive ringWhat does your telephone company’s ‘Distinctive Ring’ do? What does Brother’s ‘distinctive ring’ do? Before you choose the ring pattern to register Registering the distinctive ring pattern Very importantRing Rings Pattern Connecting an external TAD telephone answering device Turning off distinctive ring Connections Special line considerationsRoll over telephone lines Two-line telephone system Converting telephone wall outlets Multi-line connections PBX For Fax/Tel mode onlyExternal and extension telephones Operation from extension telephones Connecting an external or extension telephone Using a non-Brother cordless external handsetUsing remote codes Manual dialing How to dialDialing and storing numbers One-touch dialing Fax redial SearchLdap Search Press Search/Speed Dial Storing numbers Storing a pauseStoring one-touch dial numbers Storing speed-dial numbers Fax/Tel. Press OK Changing one-touch and speed-dial numbers Setting up groups for broadcasting Dialing access codes and credit card numbers PauseTone or pulse Canada only Remote fax options black & white only Fax forwardingRemote fax options are not available for color fax 0 0 5 5 5 1 2 3 4 # # PagingFax storage # # PC fax receive PC Fax Msg001 Changing remote fax options Turning off remote fax options Setting a remote access code Using your remote access codeRemote retrieval Retrieving fax messages Changing the fax forwarding number Retrieve a fax Remote fax commandsChange the receive mode Check the receiving status Polling Polling receiveSequential polling Setup for polled transmit Polled transmit black & white only Transmission verification report Printing reportsFax reports Fax journal How to print a report ReportsPress Black Start or Color Start. d Press Stop/Exit Chapter Copy How to copy Making copies Enlarging or reducing the image copied Copy options temporary settingsImproving copy quality Press Contrast/Quality Press Enlarge/Reduce If you are using the scanner glass, go to gMaking N in 1 copies page layout Press Black Start or Color Start to scan „ 2 in 1 P „ 2 in 1 L „ 4 in 1 P „ 4 in 1 L Duplex 2-sided copyingDuplex Copy long edge „ 2 in 1 P „ 2 in 1 L „ 4 in 1 P Advanced Duplex Copy short edge Sorting copies using the ADF Brightness Contrast Color saturation Press Tray Select Out of memory messageTray selection Press Tray Select Chapter Walk-up printing Setting your digital camera Before using PictBridgeUsing PictBridge Printing photos from a digital camera Machine settings Default settings Printing images Connecting a camera as a storage device Understanding the error messagesDpof printing Printing data from a USB flash memory drive Supported file formatsCreating a PRN or PostScript 3 file for direct printing Printing data directly from the USB flash memory drive Press Black Start or Color Start if you have finished Press Black Start or Color Start to print the data Chapter Software For Windows Software and network featuresHow to read Html User’s Guide For Macintosh 204 110114 224 Safety and legal Choosing a location To use the machine safely 100 Important Safety Instructions 101 Important information Standard telephone and FCC notices102 103 Important-about the interface cable 104 Disconnect device Laser safetyIndustry Canada Compliance Statement Canada only LAN connection Manufactured Important safety instructionsFDA regulations 106 107 Legal limitations for copying 108 Trademarks 109 Lower tray unit Dimm memory OptionsOptions 110 Installing the optional paper tray Optional paper tray111 Memory board For Macintosh users112 Installing extra memory 113 If you are having difficulty with your machine Troubleshooting and routine maintenanceTroubleshooting Printing or receiving faxes Handling incoming calls Telephone line or connectionsSending faxes 115 Printing difficulties Menu access difficultiesCopy quality difficulties 116 Scanning difficulties Software difficulties117 Network difficulties Paper handling difficultiesPrint quality difficulties 118 Network difficulties 119 Firewall and click Change settings 120 Improving the print quality Examples of poor print Recommendation Quality121 Toner cartridge on 122 Examples of poor print quality 123 124 Enter the correction value on the chart. Press Menu, 4, 8 125 Device Options, Print Setting, and then check Improve pattern printing or Improve Thin Line boxes126 Choosing a location on 127 Curled or wave 128 Abcdefg 129 Steps 130 Examples of poor print Recommendation Quality 131 Setting dial tone detection Telephone line interference132 Press Black Start or Color Start and try it Error and maintenance messagesError Message Cause Action 133 Waste Toner Box 134 Document Jam 135 Print operation in process Fax sending or copy operation in progress„ Press Black Start or Color Start to send or 136 Press Black Start or Color Start and try again Press Stop/Exit137 Toner Low 138 Transferring faxes to another fax machine Checking if the machine has faxes in its memoryTransferring faxes to your PC 139 Document is jammed under the document cover Document jamsDocument is jammed in the top of the ADF unit Document is jammed at the output tray Paper is jammed in the MP tray Paper jamsDocument is jammed in the duplex slot 141 Paper is jammed in Paper Tray 1 or Tray 142 Paper is jammed inside the machine 143 144 145 146 147 Paper is jammed at the back of the machine 148 149 Paper is jammed underneath Paper Tray 1 or in the fuser unit 150 151 Clean the outside of the machine as follows Routine maintenanceCleaning the outside of the machine 152 Cleaning the scanner 153 Cleaning the laser scanner windows 154 155 156 157 Cleaning the corona wires 158 Troubleshooting and routine maintenance Cyan Magenta Yellow Black 160 Cleaning the drum unit 161 162 163 164 165 166 Cyan Magenta Yellow Black 167 Push the drum unit in until it stops 168 Replacing the consumable items 169 170 Toner Low 171 PF Kit MP Toner life end message Replacing a toner cartridgeToner low message 172 Replacing the toner cartridges 173 174 175 Cyan Magenta Yellow Black 176 Replacing the drum unit Replacing the drum unitChange Parts Drum message 177 178 179 180 Cyan Magenta Yellow Black 181 182 Replacing the belt unit Replacing the belt unitChange Parts Belt Unit message 183 184 185 186 187 Waste Toner Box Full message Replacing the waste toner boxChange Parts Waste Toner Box message Replacing the waste toner box 189 190 191 192 193 Packing and shipping the machine 194 Repacking the machine 196 197 198 199 200 201 Checking the page counters Machine informationChecking the serial number 202 Checking the remaining life of parts 203 Menu table Menu and featuresOn-screen Menu keys Programming Memory storage How to access the menu mode 205 Menu table 206 207 208 Nnonn+ Ring Delay 209 210 Print Sample 211 Every 50 Faxes 212 Printer Emulation Auto 213 Printer Duplex Off 214 1in1 Resolution Color 150 dpi 215 216 Alphabetic 217 TCP/IP 218 LAN Wlan TCP/IP 219 Ifax 220 Mail 221 Info Making corrections Entering textInserting spaces Repeating letters Special characters and symbols 223 General SpecificationsWeight Without Drum/Toner Unit 73.2 lb 33.3 kg 224 Humidity TemperatureNoise level 225 Duplex Print mediaPaper Input Paper Tray 226 Fax Color/Monochrome Single-Sided Document Size CopyCopy Speed Copy Speed for Duplex Copying 228 Scan Interfaces LAN cable Wireless LANPrint 230 Direct print feature Interface231 Computer requirements Consumable items Support for Protocols Network type Management utilities Ethernet wired networkNetwork board model name 234 Ethernet wireless network 235 Encryption methods Authentication and encryption for wireless users onlyAuthentication method 236 Wi-Fi Alliance certification Network key237 Glossary Menu mode ECM Error Correction ModeFine resolution Easy Receive Remote Retrieval Access Overseas ModeRemote Access Code Ring Delay User Settings List Telephone Answer Code Fax/Tel mode onlyTemporary settings Tone Index 242 Telephone answer code Fax forwarding 243 Fax/Tel mode Answering at extension 244 245 Reports Fax Journal 246 247 Equipment Attachment Limitations Visit us on the World Wide Web