Brother International HL-1070 Service Manual - Page 77

Faint print, White spots, Is the problem solved

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Print out test print out test print out test Print out test print o Print out test print o Print out test print out test print out test Print out test print o Print out test print o Print out test print out test print out test Print out test print o Print out test print o Print out test print out test print out test Print out test print o Print out test print o Print out test print out test print out test Print out test print o Print out test print o Print out test print out test print out test Print out test print o Print out test print o Print out test print out test print out test Print out test print o Print out test print o Print out test print out test print out test Print out test print o Print out test print o Print out test print out test print out test Print out test print o Print out test print o Print out test print out test print out test Print out test print o Print out test print o Print out test print out test print out test Print out test print o Print out test print o Print out test print out test print out test Print out test print o Print out test print o Print out test print out test print out test Print out test print o Print out test print o I-13 Faint print Print out test print out test print out test Print out test print o Print out test print o Print out test print out test print out test Print out test print o Print out test print o Print out test print out test print out test Print out test print o Print out test print o Print out test print out test print out test Print out test print o Print out test print o Print out test print out test print out test Print out test print o Print out test print o Print out test print out test print out test Print out test print o Print out test print o Print out test print out test print out test Print out test print o Print out test print o Print out test print out test print out test Print out test print o Print out test print o Print out test print out test print out test Print out test print o Print out test print o Print out test print out test print out test Print out test print o Print out test print o Print out test print out test print out test Print out test print o Print out test print o Print out test print out test print out test Print out test print o Print out test print o Print out test print out test print out test Print out test print o Print out test print o Possible cause Printer not level Drum unit Scanner window dirty Scanner unit failure Step Check 1 Is the printer placed horizontally? 2 Does the problem happened immediately after replacing the drum unit with a new one? 3 Is the window of the laser scanner dirty? 4 Is the problem solved by replacing the scanner unit? Result Remedy No Place the printer on a flat surface. Yes Remove and shake the drum unit horizontally with care. Yes Clean the scanner window with a dry tissue. Yes Replace the scanner unit. I-14 White spots Possible cause Toner cartridge Step Check 1 Is the toner in the toner cartridge almost empty? Print paper Environment 2 Is the problem solved after change to specified of fresh unpacked paper? 3 Check if the problem still appears after the printer has warmed up. Result Remedy Yes Shake the drum unit horizontally. Replace the toner cartridge with a new one. No Replace the drum unit. Yes Recommend the user to change the paper. (Damp (wet) paper might be used.) Yes Replace the drum unit. Advise the user of the specified print environment. IV-13

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IV-13
I-13
Faint print
Print out test
print out test
print out test
Print out test
print o
Print out test
print o
Print out test
print out test
print out test
Print out test
print o
Print out test
print o
Print out test
print out test
print out test
Print out test
print o
Print out test
print o
Print out test
print out test
print out test
Print out test
print o
Print out test
print o
Print out test
print out test
print out test
Print out test
print o
Print out test
print o
Print out test
print out test
print out test
Print out test
print o
Print out test
print o
Print out test
print out test
print out test
Print out test
print o
Print out test
print o
Print out test
print out test
print out test
Print out test
print o
Print out test
print o
Print out test
print out test
print out test
Print out test
print o
Print out test
print o
Print out test
print out test
print out test
Print out test
print o
Print out test
print o
Print out test
print out test
print out test
Print out test
print o
Print out test
print o
Print out test
print out test
print out test
Print out test
print o
Print out test
print o
Print out test
print out test
print out test
Print out test
print o
Print out test
print o
Print out test
print out test
print out test
Print out test
print o
Print out test
print o
Print out test
print out test
print out test
Print out test
print o
Print out test
print o
Print out test
print out test
print out test
Print out test
print o
Print out test
print o
Print out test
print out test
print out test
Print out test
print o
Print out test
print o
Print out test
print out test
print out test
Print out test
print o
Print out test
print o
Print out test
print out test
print out test
Print out test
print o
Print out test
print o
Print out test
print out test
print out test
Print out test
print o
Print out test
print o
Print out test
print out test
print out test
Print out test
print o
Print out test
print o
Print out test
print out test
print out test
Print out test
print o
Print out test
print o
Print out test
print out test
print out test
Print out test
print o
Print out test
print o
Print out test
print out test
print out test
Print out test
print o
Print out test
print o
Print out test
print out test
print out test
Print out test
print o
Print out test
print o
Print out test
print out test
print out test
Print out test
print o
Print out test
print o
Possible cause
Step
Check
Result
Remedy
Printer not level
1
Is the printer placed
horizontally?
No
Place the printer on a flat
surface.
Drum unit
2
Does the problem happened
immediately after replacing the
drum unit with a new one?
Yes
Remove and shake the drum
unit horizontally with care.
Scanner window
dirty
3
Is the window of the laser
scanner dirty?
Yes
Clean the scanner window with
a dry tissue.
Scanner unit
failure
4
Is the problem solved by
replacing the scanner unit?
Yes
Replace the scanner unit.
I-14
White spots
Possible cause
Step
Check
Result
Remedy
Toner cartridge
1
Is the toner in the toner
cartridge almost empty?
Yes
Shake the drum unit
horizontally. Replace the toner
cartridge with a new one.
No
Replace the drum unit.
Print paper
2
Is the problem solved after
change to specified of fresh
unpacked paper?
Yes
Recommend the user to
change the paper.
(Damp (wet) paper might be
used.)
Environment
3
Check if the problem still
appears after the printer has
warmed up.
Yes
Replace the drum unit.
Advise the user of the
specified print environment.