Xerox 3150 - Phaser B/W Laser Printer, Service Manual

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Alignment and Adjustments
6-2
6.1.2 Status Monitoring 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 printer power ON. The 7 segment LED
display will show various codes that show the progress of the printer operation.
Normal Code Table
When the printer is warming up, or during a print job, the display indicates the papers postion in the printer.
Error Codes
If a problem is detected during the print process, printing is stopped and an error code is displayed.
Code State Description
78 System initialization The main processor is starting up.
61 Warming up The printer is ON, the cover is open or closed.
00 - 05 Ready (code dependent on
paper size) The printer is Ready. The paper is detected when the first
page is printed.
00 : Legal, 01 : Letter, 02 : A4, 03 : EXEC, 04 : B5, 05 : Other
20 Print start The engine controller received the print order from the video
controller.
20 : Tray 2, 21 : Tray 1/MPT, 22 : Optional Tray 3
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 the exit sensor.
69 Sleep Mode The fuser power is turned OFF to minimize power
consuption.
Code State Description
60, 62, 68 Fuser Error An error has occured in the fuser, see section "4.3.5.10
Fusing" on page 4-11.
60 : Open fuser error, 62 : Low heat error, 68 : Overheat error
64 Cover open The printer cover is open.
65 CRU Error The toner cartridge is not installed.
70 No paper There is no paper loaded in the tray.
71 Paper Jam0 Paper is jammed between the pick rollers and the feed
sensor.
72 Paper Jam1 Paper is jammed between the exit sensor and feed sensor.
73 Paper Jam2 Paper is jammed just after passing through the exit sensor.
95 Laser Unit no ready The LSU motor is not ready or the Hsync signal was not
output.