7/98Xerox DocuPrint P8e Service Manual 5-21 General Procedures and InformationTable 5.4.2 Status Mode IndicationsThe Test Print FunctionThe Test Print Function is available in Status Mode when any of the three Ready codes (00, 01, 02) aredisplayed. Pressing the Self-Test button (upper right) initiates the printing of a single page and checks allfunctions required to produce a printed image. The Test Print is a page covered with vertical lines abouta quarter inch apart.While the test print is being produced, the display changes as the Status monitor displays the codes foreach function involved in making the test print. If no problems occur during the Test Print operation theDCU will again display one of the three Ready codes.5.4.2.2 Diagnostic ModeDiagnostic Mode enables the individual testing of thirteen different printer functions.Diagnostic Mode is entered by simultaneously pressing three keys--DOWN, SHIFT, and STOP--at thetime the printer is switched on. If the printer is already connected and in the Status Mode, it is necessaryto switch off the printer, hold down the three keys, and switch on the printer.When the DCU enters Diagnostic Mode, the readout window displays “00” and all LEDs on the printer'sControl Panel start to blink. The Control Panel LEDs continue to blink as long as the DCU is inDiagnostic Mode.Code Indication Code Indication00 Ready (legal) 47 Second feed sensor off01 Ready (letter) 50 Paper Exit02 Ready (A4) 60 Open fuser error20 Print start 61 Warm up21 Print start (manual) 62 Low heat error23 Print start (second paper)? 64 Cover open sensor30 Feed sensor 1st on 68 Overheating error31 Feed sensor 1st off 70 No paper33 Feed sensor 1st on (second paper) 71 Paper jam (between feeder and feedsensor)34 Feed sensor 1st off (second paper) 72 Jam1 (between feed sensor and exitsensor40 Second feed sensor on 73 Jam2 (at exit sensor)43 Second feed sensor on (second paper) 90 Manual mode95 LSU not ready