Konica Minolta bizhub 20 User Manual

132
Paper is jammed in the MP trayC
If the LCD shows Jam MP Tray, follow 
these steps:
aRemove the paper from the MP tray.
bRemove any jammed paper from in and 
around the MP tray.
 
cClose the MP tray. Then open the front 
cover and close it to reset the machine.
Open the MP tray again.
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...

Troubleshooting and routine maintenance
133
C
cMake sure the paper is below the 
maximum paper mark (b) of the paper 
tray. While pressing the blue paper-
guide 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.
IMPORTANT
DO NOT take out the standard paper tray 
while paper is feeding from a lower paper 
tray as this will cause a paper jam.
 
Paper is jammed inside the machineC
aPull the paper...

134
ePut the drum unit and toner cartridge 
assembly back in the machine.
 
fClose the front cover.
gPut the paper tray firmly back in the 
machine.
Paper is jammed inside the drum unit 
and toner cartridge assembly
C
aPress the front cover release button and 
open the front cover. 
 
bSlowly take out the drum unit and toner 
cartridge assembly.
 
IMPORTANT
We recommend that you place the drum 
unit and toner cartridge assembly on a 
clean, flat surface with a sheet of 
disposable paper or cloth...

Troubleshooting and routine maintenance
135
C
ePut the toner cartridge back into the 
drum unit until you hear it lock into place. 
If you put it in correctly, the blue lock 
lever will lift automatically. 
 
fPut the drum unit and toner cartridge 
assembly back in the machine.
 
gClose the front cover.
Paper is jammed at the back of the 
machine
C
aPress the front cover release button and 
open the front cover. 
 
bSlowly take out the drum unit and toner 
cartridge assembly.
 
IMPORTANT
We recommend...

136
dPull the tabs at the left and right hand 
sides toward you to open the fuser 
cover (1).
 
ePull the jammed paper out of the fuser 
unit.
 
fClose the fuser cover and back cover 
(back output tray).
gPut the drum unit and toner cartridge 
assembly back in the machine.
 
hClose the front cover.
Paper is jammed in the duplex trayC
aPull the duplex tray completely out of the 
machine.
 
bPull the jammed paper out of the 
machine or the duplex tray.
 
cPut the duplex tray back in the machine. 
1...

Troubleshooting and routine maintenance
137
C
Routine maintenanceC
WARNING 
Use neutral detergents.
  
DO NOT use any flammable substances, 
spray or organic solvent/liquids containing 
alcohol/ammonia to clean the inside or 
outside of the machine. Doing this may 
cause a fire or electrical shock. (For more 
information see Important safety 
instructions on page 97.)
 
IMPORTANT
The drum unit contains toner, so handle it 
carefully. If toner scatters on your hands 
or clothes, wipe or wash it off with...

138
Cleaning the scannerC
aTurn off the machine. Unplug the 
telephone line cord first, disconnect all 
cables and then unplug the power cord 
from the electrical socket.
bLift the document cover (1).
Clean the white plastic surface (2) and 
scanner glass (3) underneath it with a 
soft lint-free cloth moistened with water.
 
cIn the ADF unit, clean the white bar (1) 
and the scanner glass strip (2) 
underneath it with a soft lint-free cloth 
moistened with water.
 
dPlug the machine’s power cord back...

Troubleshooting and routine maintenance
139
C
bOpen the front cover and slowly take out 
the drum unit and toner cartridge 
assembly.
 
CAUTION 
HOT SURFACE
After you have just used the machine, some 
internal parts of the machine will be 
extremely hot. To prevent injury, when you 
open the front or back cover (back output 
tray) of the machine DO NOT touch the 
shaded parts shown in the illustration. If you 
do this you may get burned.
 
 
IMPORTANT
• To prevent damage to the machine 
caused by static...

140
Cleaning the corona wireC
If you have print quality problems, clean the 
corona wire as follows:
aTurn off the machine. Unplug the 
telephone line cord first, disconnect all 
cables, and then unplug the power cord 
from the electrical socket.
bOpen the front cover and slowly take out 
the drum unit and toner cartridge 
assembly.
 
IMPORTANT
• We recommend that you place the drum 
unit and toner cartridge assembly on a 
clean, flat surface with a sheet of 
disposable paper or cloth underneath it in...

Troubleshooting and routine maintenance
141
C
fPlug the machine’s power cord back into 
the electrical socket first, and then 
reconnect all cables and telephone line 
cord. Turn on the machine.
IMPORTANT
To avoid print quality problems, DO NOT 
touch the shaded parts shown in the 
illustrations below.
 
 
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