Brother HL-2060 - Troubleshooting Image Defects

VI-4
3.2 Troubleshooting Image Defects
I-1 Light
Possible cause Step Check Result Remedy
Toner shortage 1 Does printed image improve when the
EP-ED HC cartridge is replaced?
Yes Replace EP-ED HC
cartridge.
ECONOMY
mode
2 Is the ECONOMY mode active? Yes Cancel the ECONOMY
mode.
Printing
density setting
3 Does printed image improve when printed
density setting is changed on the control
panel?
Yes Adjust the proper setting
on the control panel.

4 During a printing, open the toner cartridge lid
in the printer and pull out the EP-ED HC
cartridge.
Open the drum shutter of the EP-ED HC
cartridge and check the toner image on the
drum.
Is the toner image before transfer is light?
Yes Go to the Step 9.
Paper failure 5 Does the print quality improve when fresh
paper is used?
Yes Use recommended paper.
Transfer roller
failure
6 Does the print quality improve when print is
made with transfer roller changed?
Yes Clean the transfer roller
[Use dry lint-free paper
(producing little paper
dust) to clean the
transfer roller. Never use
solvents] and, if dirt
subsists, replace the
transfer roller assy.
Transfer input
signal error
7 Do the pins 7 and 8 of the connector P6 on the
main PCB have the following value
respectively when a sheet of paper is fed from
the MP tray?
P6-7 pin (HVT2) --- Change in voltage from
15V approx. to 0V about 1 second after paper
feeding.
P6-8 pin (HVT3) --- Change in voltage from 9V
approx. to 0V just when the voltage at the 7
pin changes from 0V to 15V.
No Replace the main PCB
assy or the harness.
Dirt on power
supply terminal
8 Clean the transfer roller right end bearing, the
check continuity between the transfer roller
power supply spring and the terminal
No Clean the contact to
assure the continuity.
Failure in the
transfer high-
voltage circuit
of the high-voltage transfer unit.
Is there continuity?
Yes Replace the high-voltage
power supply assy.
Insufficient LD
light
9 Does print quality improve when the laser unit
is improved?
Yes Replace the laser unit or
the harness.
Continued to the following page