Samsung ML-1650, ML-1651N specifications How to use DCU, DCU Setup, Code

Troubleshooting

4-1 How to use DCU

4-1-1 DCU Setup

You can examine the malfunction of the printer. To perform DCU, open the front discharge cover and leave the connect the harness wire(10 pin/4 pin) to the CN10(4 pin) of the Main control board.

4-1-2 Code

Connect DCU to the printer and turn the power on. It show 7 LED on the panel and each code tells the function of the printer.

Normal Code

While printing or warming up, it indicate the position of the paper

61	Warm up	The printer is on, the cover is open or close.
00-05	Ready(kind of paper)	The printer is ready, the paper is detected when the first paper is printed.
		00: Legal ,01: Letter ,02: A4 ,03: EXEC ,04: B5 ,05: Folio, 06: A5/A6
20, 21, 22	Print Start	The engine controller received the print order from the video controller.
		20: 1st, 21: MP, 22: SCF
30	Feed Sensor On	The paper is passing out of the Feed Sensor.
40	Feed Sensor off	The paper has passed out of the Feed Sensor.
50	Paper Out	The paper has passed out of Exit Sensor.
69	Sleep Mode	The fuser power turned off to minimize the power consumption.

Error Code

When detecting the malfunction, the printing is stopped to indicate error code.

60, 62, 68	Fuser Error	The error in the fuser occurred. There is a short circuit in the thermistor and the
		thermostat while printing, Low Temperature Error occurs.
		• 60: Open Fuser Error
		• 62: Low Heat Error
		• 68: Over Heat Error
64	Cover Open	The Printer Cover is open.
65	CRU Error	The Toner Cartridge not installed,
70	No Paper	No paper in the paper cassette.
71	Paper Jam 0	The front part of paper is jammed between pickup unit and Feed sensor.
72	Paper Jam 1	The front part of paper is jammed between the Discharge sensor and Feed sensor.
73	Paper Jam 2	The front part of paper is jammed just after passing through the discharge sensor.
76	Out Bin Full	The Out bin is filled with paper.
95	LSU Not Ready	LSU Scanner Motor not ready or Hsync signal not output.

4-2 Samsung Electronics