C

Troubleshooting and routine maintenance

114

 

Troubleshooting

114

 

If you are having difficulty with your machine

114

 

Improving the print quality

121

 

Setting dial tone detection

132

 

Telephone line interference

132

 

Error and maintenance messages

133

 

Checking if the machine has faxes in its memory

139

 

Transferring faxes to another fax machine

139

 

Transferring faxes to your PC

139

 

Document jams

140

 

Paper jams

141

 

Routine maintenance

152

 

Cleaning the outside of the machine

152

 

Cleaning the scanner

153

 

Cleaning the laser scanner windows

154

 

Cleaning the corona wires

158

 

Cleaning the drum unit

161

 

Replacing the consumable items

169

 

Replacing a toner cartridge

172

 

Replacing the drum unit

177

 

Replacing the belt unit

183

 

Replacing the waste toner box

188

 

Packing and shipping the machine

194

 

Repacking the machine

195

 

Machine information

202

 

Checking the serial number

202

 

Checking the page counters

202

 

Checking the remaining life of parts

203

D

Menu and features

204

 

On-screen programming

204

 

Menu table

204

 

Memory storage

204

 

Menu keys

204

 

How to access the menu mode

205

 

Menu table

206

 

Entering text

222

xiii

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Brother MFC-9840CDW manual Troubleshooting and routine maintenance 114, Xiii