1-41
Confidential
■
Downward fogging of solid color
■
Horizontal lines
User Check
• Toner may be empty. Replace the toner cartridge with a new one.
Step
Cause
Check
Result
Remedy
1
HVPS PCB
failure
Is the problem solved
after replacing the
HVPS PCB ASSY?
Yes
Replace the HVPS PCB
ASSY.
2
Main PCB failure
Is the problem solved
after replacing the main
PCB ASSY?
Yes
Replace the main PCB
ASSY.
User Check
• The paper tray ground terminal located in the machine
body may be dirty. Clean the contact with a dry cloth.
Step
Cause
Check
Result
Remedy
1
Dirt on charge
electrode
Are the electrodes on
the drum unit and
machine body dirty?
Yes
Clean both electrodes.
(Refer to
)
2
Paper tray
ground terminal
located in
machine body
Is the paper tray ground
terminal bent, which is
located in the machine
body?
Yes
Correct the bending of
paper tray ground terminal.
3
Laser unit failure
Is the problem solved
after replacing the laser
unit?
Yes
Replace the laser unit.
Summary of Contents for DCP-7030
Page 201: ...5 5 Confidential Print sample Fig 5 1 ...
Page 226: ...5 30 Confidential Location of fans Fig 5 13 Fan motor 60 unit Right side ...
Page 234: ...6 2 Confidential LVPS PCB Circuit Diagram 100V ...
Page 235: ...6 3 Confidential LVPS PCB Circuit Diagram 200V ...
Page 239: ...6 7 Confidential Wiring Diagram ...