6-2
Alignment & Adjustments
Samsung Electronics
Service
Manual
6.1.2 Code
The DCU can be used in 2 modes – Status Monitoring and Self Diagnostic.
To use the DCU in Status monitoring mode connect the DCU and turn the printer power on. The 7 segment
LED display will show various codes that show the progress of the print operation.
1) Normal Code
When the printer is warming up or during a print job the display indicates the paper position.
2) Error Code
If a problem is detected during the print process printing is stopped and an error code is displayed.
Code State Description
78 System Initialisation The main processor is starting up
61 Warming up The printer is on, the cover is open or close.
00~05 Ready (exact code The printer is ready. The paper is detected when the first page is printed.
depends on paper size) 00: Legal, 01: Letter, 02: A4, 03: EXEC, 04: B5
20 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 is turned off to minimize the power consumption.
Code State Description
60, 62, 68 Fuser Error An error has occurred in the fuser. See section 4.3.5.9.
• 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 is 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 Exit sensor and Feed
sensor.
73 Paper Jam 2 The front part of paper is jammed just after passing through the Exit
sensor.
95 LSU Not Ready LSU Scanner Motor not ready or Hsync signal not output.
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