Other ; Printed ; Pages - Page 210

TROUBLESHOOTING PROCEDURES

16-5

MFC 4550/6550MC/7550MC
OP-US-5.0

Other 

Problems

When the Receiving Party Says the Picture is Not Clear

Sometimes 

the 

resolution 

mode 

you 

chose 

when 

you 

sent 

your 

fax 

may 

not 

have 

been

appropriate. 

Send 

the 

fax 

again, 

but 

try 

using 

the 

FINE 

or 

SUPERFINE 

mode. 

Also,

your 

machine’s 

scanner 

may 

be 

dirty, 

so 

try 

cleaning 

it. 

(See 

page 

14-1)

When the Receiving Party Says Vertical Streaks Appear on the Faxes They
R e c e i v e :

Your 

machine’s 

scanner 

may 

be 

dirty 

or 

the 

receiving 

party’s 

printer 

head 

may 

be

dirty. 

Clean 

your 

scanner, 

(See 

page 

14-1) 

and 

make 

a 

copy 

to 

check 

if 

the 

problem

was 

caused 

by 

your 

machine.

Vertical Streaks Appear on the Faxes You Receive

Sometimes 

you 

may 

see 

vertical 

streaks 

on 

the 

faxes 

you 

receive. 

Either 

your

machine’s 

primary 

corona 

wire 

for 

printing 

may 

be 

dirty, 

or 

the 

sending 

party’s 

fax

scanner 

may 

be 

dirty. 

Clean 

your 

primary 

corona 

wire. 

(See 

page 

14-3) 

Make 

a 

copy

to 

see 

if 

the 

vertical 

streaks 

are 

still 

there.

Vertical Streaks Appear in Copies

Sometimes 

you 

may 

see 

vertical 

streaks 

on 

your 

copies.

Either 

the 

scanner 

or 

the 

primary 

corona 

wire 

for 

printing 

is 

dirty. 

Clean 

them 

both.

(See 

page 

14-1~3)

If 

the 

Printed 

Pages 

are 

Still 

Blurred 

at 

the 

Center 

or 

Either 

Edge 

as 

Below

First, 

make 

sure 

that 

the 

printer 

is 

placed 

on 

a 

flat, 

horizontal 

surface.

If 

the 

problem 

still 

occurs, 

remove 

the 

drum 

unit 

with 

the 

toner 

cartridge 

installed.

Hold 

the 

unit 

horizontally 

with 

both 

hands 

and 

tap 

it 

firmly 

against 

a 

flat 

surface 

3

or 

4 

times. 

Reinstall 

the 

drum/toner 

unit 

and 

try 

printing 

again. 

If 

the 

print 

quality

is 

acceptable, 

you 

may 

continue 

using 

this 

drum 

unit. 

If 

the 

print 

quality 

is 

not

acceptable 

replace 

the 

drum 

unit. 

If 

streaks 

still 

occur, 

please 

contact 

Brother

Customer 

Service 

or 

your 

local 

Authorized 

Service 

Center 

for 

further 

assistance.

Horizontal Streaks

You 

may 

get 

a 

fax 

with 

horizontal 

streaks 

or 

with 

missing 

lines. 

Usually 

this 

is 

caused

by 

a 

poor 

telephone 

connection. 

Ask 

the 

other 

party 

to 

send 

the 

fax 

again.

Poor 

Printing 

Quality

If 

the 

printing 

quality 

is 

not 

at 

an 

acceptable 

level, 

please 

replace 

your 

drum 

unit 

with

a 

new 

one.

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