4-24
Samsung Electronics
Maintenance & Troubleshooting
Plug in the
power cord?
The power
voltage supplying is
the same as
rating?
The fan
revolves when
powered on?
The On-Line
key is being pressed
or shortage on
the panel
board?
Repair/replace the
OPE board
Check the voltage first and plug
the power cord
Supply the power as the rating
Connections
on board are OK?
Re-connect firmly
and re-test
The connection
error between
controller board
and panel board
or malfunction
of boards.
-> Replace the
boards
Fuse of SMPS
if open?
Shortage
between 5V and
GND, or between
24V and
GND?
Replace the fuse
Toner cartridge
is in the set?
Detect failure due to the
board which detects top
cover open or switch error
-> Replace the board or switch
Put in the
cartridge
Remove the shortage
or replace the board
NO
NO
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
YES
YES
No Power (LCD NO display)
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 ...