4-12
Samsung Electronics
Maintenance & Troubleshooting
White line
missing definitely?
Dirt of dust stuck onto the
window of internal lens of LSU
-> Clean it or replace LSU
Preventive obstacles through
the path between OPC of
developer and LSU prevent the
path -> Remove the obstacles
Check if the
printout is still has the
same problem even right after
passed through the
transfer roller
Toner material might be stuck to
blade in the developer inside and it
prevents toner supply -> Replace
the developer
Check both if the toner cartridge’s
counter is over its guaranty and
amount of the toner material
-> Replace the toner cartridge
The ribs in fuser or toner on the
roller may invoke the image
problem -> Replace the fuser
cover or the defective part
The image is originally black or the
black part is far close to the top
-> Use the pattern which has the
image below bigger than 10mm
from the top
NO
NO
YES
YES
Vertical White Line (Band)
Summary of Contents for Msys 6750
Page 10: ...2 6 Samsung Electronics Specification Memo ...
Page 58: ...4 28 Samsung Electronics Maintenance Troubleshooting MEMO ...
Page 81: ...5 22 Samsung Electronics Exploded Views and Parts Lists MEMO ...
Page 95: ...MEMO Samsung Electronics 8 2 ...
Page 96: ...PCB Diagrams Samsung Electronics 9 1 9 1 Main PCB Diagram Top 9 PCB Diagrams ...
Page 97: ...PCB Diagrams Samsung Electronics 9 2 9 2 Main PCB Diagram Bottom ...
Page 98: ...PCB Diagrams Samsung Electronics 9 3 9 3 LIU PCB Diagram Top 9 4 LIU PCB Diagram Bottom ...
Page 99: ...PCB Diagrams Samsung Electronics 9 4 9 5 Engine PCB Diagram Top ...
Page 100: ...PCB Diagrams Samsung Electronics 9 5 Engine PCB Diagram Top ...
Page 101: ...PCB Diagrams Samsung Electronics 9 6 9 6 Engine PCB Diagram Bottom ...
Page 102: ...PCB Diagrams Samsung Electronics 9 7 Engine PCB Diagram Bottom ...
Page 103: ...PCB Diagrams Samsung Electronics 9 8 9 7 OPE PCB Diagram ...
Page 104: ...PCB Diagrams Samsung Electronics 9 9 OPE PCB Diagram ...
Page 105: ...PCB Diagrams Samsung Electronics 9 10 MEMO ...
Page 106: ...Connection diagram Samsung Electronics 8 1 8 Connection diagram ...
Page 107: ...MEMO Samsung Electronics 8 2 ...
Page 110: ...Main Circuit Diagram 3 5 Samsung Electronics 10 3 Schematic Diagrams ...
Page 111: ...Schematic Diagrams 10 4 Samsung Electronics Main Circuit Diagram 4 5 ...
Page 113: ...Schematic Diagrams 10 6 Samsung Electronics 10 2 Engine Circuit Diagram 1 4 ...
Page 114: ...Engine Circuit Diagram 2 4 Samsung Electronics 10 7 Schematic Diagrams ...
Page 115: ...Schematic Diagrams 10 8 Samsung Electronics Engine Circuit Diagram 3 4 ...
Page 116: ...Engine Circuit Diagram 4 4 Samsung Electronics 10 9 Schematic Diagrams ...
Page 117: ...Schematic Diagrams 10 10 Samsung Electronics 10 3 LIU Circuit Diagram ...