Samsung Electronics
4-17
Maintenance & Troubleshooting
NO
Black band?
The black
band has regular
interval?
Black band
is far about 10mm from
white band?
Problem of internal
contacts in OPC
-> Replace developer
The OPC is damaged under the
direct sunlight for around 5
minutes -> If the same problem
persists in 10 hours, replace
the developer
This occurs when no
Hsync/ at LSU
-> Replace LSU
94mm interval?
Heat roller is ruined
-> Replace the roller
The OPC is damaged due to
the irregular transfer voltage
of HVPS
-> Repair/replace Engine B’d
-> If the same problem persists,
replace the developer
Does it appear
at every 56.1mm at
specific place?
Problems of terminal contact,
transfer voltage supplying,
and transfer roller’s due to the
charge roller is ruined (38mm)
-> Repair/replace Engine B’d,
developer
NO
NO
NO
NO
YES
YES
YES
YES
Horizontal 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 ...