Brother MFC 9840CDW User Manual

Troubleshooting and routine maintenance
139
C
Document is jammed in the duplex 
slot
C
aTake out any paper from the ADF that is 
not jammed.
bPull the jammed document out to the 
right.
 
cPress Stop/Exit.
Paper jamsC
To clear paper jams, please follow the steps 
in this section.
HOT SURFACE 
After you have just used the machine, some 
internal parts of the machine will be 
extremely hot. When you open the front or 
back cover of the machine, DO NOT touch 
the shaded parts shown in the illustration....

140
dFan the paper stack, and then put it back 
in the MP tray.
 
eWhen loading paper in the MP tray, 
make sure that the paper stays under 
the maximum paper height guides on 
both sides of the tray.
 
Paper is jammed in Paper Tray 1 or 
Tray 2
C
If the LCD shows Jam Tray 1 or 
Jam Tray 2, follow these steps.
 
Jam Tray 1
 
Jam Tray 2
aPull the paper tray completely out of the 
machine.
For Jam Tray 1:
 
For Jam Tray 2: 
 

Troubleshooting and routine maintenance
141
C
bUse both hands to slowly pull out the 
jammed paper.
 
cMake sure the paper is below the 
maximum paper mark. While pressing 
the green paper-guides release lever, 
slide the paper guides to fit the paper 
size. Make sure that the guides are 
firmly in the slots.
dPut the paper tray firmly back in the 
machine.
Paper is jammed inside the machineC
If the LCD shows Jam Inside, follow these 
steps:
 
Jam Inside
aPull the paper tray completely out of the...

142
dHold the green handle of the drum unit. 
Lift the drum unit up and then pull it out 
until it stops.
 
eRelease the grey lock lever (1) that is on 
the left side of the machine. Lift the front 
of the drum unit up and pull the drum 
unit completely out of the machine using 
the green handles on the drum unit.
 
1
 

Troubleshooting and routine maintenance
143
C
CAUTION 
Make sure that you use the drum unit 
handles when carrying it. DO NOT hold the 
sides of the drum unit.
 
 
 
We recommend that you put the drum unit 
on a flat surface protected by a piece of 
disposable paper or cloth in case of toner 
scatter or spillage.
  
To prevent damage to the machine from 
static electricity, DO NOT touch the 
electrodes shown in the illustration.
 
 
fThe jammed paper may be pulled out 
with the toner cartridge and drum...

144
gPut the drum unit back in the machine as 
follows.
1Make sure that the grey lock 
lever (1) is in the up position and 
put the drum unit in the machine. 
Push down the grey lock lever (1).
 
Note
When you put the drum unit in the 
machine, match the green guides (1) of 
the drum unit handle to the green 
arrows (2) on both sides of the machine.
 
 
1
1
2
1
2
1
 

Troubleshooting and routine maintenance
145
C
2Push the drum unit in until it stops. 
hClose the front cover of the machine. 
iPut the paper tray firmly back in the 
machine.
Paper is jammed at the back of the 
machine
C
If the LCD shows Jam Rear, follow these 
steps:
 
Jam Rear
aPress the cover release lever to open 
the front cover.
 
 

146
bHold the green handle of the drum unit. 
Lift the drum unit up and then pull it out 
until it stops.
 
cOpen the back cover.  
dPull down the two green levers, one on 
the left-hand-side and one on the 
right-hand-side, as shown in the 
illustration below, and then fold down 
the fuser cover (1). 
 
HOT SURFACE 
After you have just used the machine, some 
internal parts of the machine will be 
extremely hot. When you open the front or 
back cover of the machine, DO NOT touch 
the shaded parts shown...

Troubleshooting and routine maintenance
147
C
eUsing both hands, gently pull the 
jammed paper out of the fuser unit.
 
fClose the fuser cover (1) and lift the two 
green levers at the left and right hand 
sides.
 
gClose the back cover. 
hPut the drum unit and toner cartridge 
assembly back in the machine.
 
iClose the front cover of the machine. 
1
 

148
Paper is jammed underneath Paper 
Tray 1 or in the fuser unit
C
If the LCD shows Jam Duplex, follow these 
steps:
 
Jam Duplex
aPull the paper tray completely out of the 
machine and check inside the machine.
 
bIf paper is not caught inside the 
machine, check underneath the paper 
tray.
 
Note
DO NOT put the paper tray back in at this 
point.
 
cIf the paper is not caught in the paper 
tray, open the back cover.
 
dPush the grey lever on the left hand 
side (1) to the right.
 
HOT SURFACE 
After...