4-16
Samsung Electronics
Troubleshooting
4-4 DCU Control
4-4-1 DCU Setup
DCU is used to diagnose the printer malfunctions. To use DCU, open and remove the PrinterÕs exit cover in
front, and remove the bottom cover from left. Connect the DCU harness wire (10 pin-to-4 pin) to CN3 (4 pins)
on the control board.
4-4-2 Status Code
Connect the DCU to the printer and turn power on. The DCU display Status Code in the 7 segment LEDs.
There are two kinds of Status Codes; Normal and Error. And their codes mean the printer operating status.
NORMAL STATUS CODE
These codes mean paper location on the paper path when the printer is printing, or warming up.
61
Warm up
The printer warms up when the printer is turned on or the cover is closed, or
wake from sleep mode.
00~04
Ready(paper type) The printer is in printable state. The paper type is sensed after
one page printing.
20
Print Start
The code is displayed when engine controller is received ÔPRINTÕ command
from the video controller.
30
Feed Sensor On
It means that paper is passing the feed sensor.
40
Feed Sensor Off
It means that paper passed the feed sensor.
50
Paper out
It means that paper passed the exit sensor.
69
Sleep Mode
It means that the printer fuser is turned off, and the power consumption is
minimized.
ERROR STATUS CODE
If the printer stops printing by any malfunction, the DCU displays its error status code.
60,62,68
Fuser Error
These codes mean the fuser error status. Heat lamp, thermistor, thermostat
open or thermistor short. The ÔLow Temperature ErrorÕ is checked when the
printer is printing.
64
Cover Open
The printer cover open or no toner cartridge in the machine.
70
No Paper
The paper is not loaded in the printer paper tray.
71
Paper Jam 0
Displays when the paper leading edge stops between the pick-up unit and
the feed sensor.
72
Paper Jam 1
Displays when the paper leading edge stops between the feed sensor and the
exit sensor.
73
Paper Jam 2
Displays when the paper leading edge stops after the exit sensor.
95
LSU Not Ready
The LSU scanner motor is not ready or ÔHsyncÕ signal is not output.
Summary of Contents for ML-5000A
Page 40: ...5 2 Samsung Electronics Exploded Views and Parts List 5 1 Main Exploded View 75 76 79 78 77 ...
Page 44: ...5 6 Samsung Electronics Exploded Views and Parts List 5 5 Top Cover Exploded View 14 15 ...
Page 54: ...5 16 Samsung Electronics Exploded Views and Parts List 62 5 15 Motor Exploded View ...
Page 58: ...5 20 Samsung Electronics Exploded Views and Parts List Memo ...
Page 72: ...Electrical Parts List 6 14 Samsung Electronics Memo ...
Page 74: ...Controller ML 5000A 1 7 7 2 Samsung Electronics Schematic Diagrams ...
Page 75: ...Controller ML 5000A 2 7 7 3 Samsung Electronics Schematic Diagrams ...
Page 76: ...Controller ML 5000A 3 7 7 4 Samsung Electronics Schematic Diagrams ...
Page 77: ...Controller ML 5000A 4 7 7 5 Samsung Electronics Schematic Diagrams ...
Page 78: ...Controller ML 5000A 5 7 7 6 Samsung Electronics Schematic Diagrams ...
Page 79: ...Controller ML 5000A 6 7 7 7 Samsung Electronics Schematic Diagrams ...
Page 80: ...Controller ML 5000A 7 7 7 8 Samsung Electronics Schematic Diagrams ...
Page 83: ...OPE Panel ML 5000A G 7 11 Samsung Electronics Schematic Diagrams ...
Page 84: ...Engine ML 5000A G 1 3 7 12 Samsung Electronics Schematic Diagrams ...
Page 85: ...Engine ML 5000A G 2 3 7 13 Samsung Electronics Schematic Diagrams ...
Page 86: ...Engine ML 5000A G 3 3 7 14 Samsung Electronics Schematic Diagrams ...
Page 87: ...Joint Board ML 5000A G 7 15 Samsung Electronics Schematic Diagrams ...
Page 91: ...7 7 Sensor ML 5000A G 7 19 Samsung Electronics Schematic Diagrams ...
Page 92: ...7 8 Switch ML 5000A G 7 20 Samsung Electronics Schematic Diagrams ...
Page 93: ...7 9 PTL ML 5000A G 7 21 Samsung Electronics Schematic Diagrams ...
