1-57
Confidential
12.
OTHERS PROBLEMS
■
The machine is not turned on, or the LCD indication does not appear.
■
The fan does not work.
Step
Cause
Check
Result
Remedy
1
Harness
connection
failure of panel
PCB
Is the harness of the
panel PCB ASSY
connected correctly?
No
Reconnect the panel PCB
ASSY harness.
2
Panel PCB
failure
Is the problem solved
after replacing the panel
PCB ASSY?
Yes
Replace the panel PCB
ASSY.
3
LCD failure
Is the problem solved
after replacing the LCD?
Yes
Replace the LCD.
4
LVPS PCB failure Is the problem solved
after replacing the LVPS
PCB unit?
Yes
Replace the LVPS PCB
unit.
5
Main PCB failure
Is the problem solved
after replacing the main
PCB ASSY?
Yes
Replace the main PCB
ASSY.
Step
Cause
Check
Result
Remedy
1
Harness
connection
failure of the fan
motor 60 ASSY.
Is the harness of the fan
motor 60 ASSY
connected correctly?
No
Reconnect the harness of
the fan motor 60 ASSY
correctly.
2
Toner LED PCB
ASSY failure
Is the problem solved
after replacing the toner
LED PCB ASSY?
Yes
Replace the toner LED
PCB ASSY.
3
Main PCB failure
Is the problem solved
after replacing the main
PCB ASSY?
Yes
Replace the main PCB
ASSY.
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 ...