41316401TH Rev.4 106 /4.1.2.5 Test printingThis self-diagnostic routine is used when the internal test patterns of the PU are printed. Other testpatterns are stored in the controller.1. Go to the self-diagnosis (level 1) mode, and hold the 11111 and 55555 keys down until “TEST PRINT”comes into view in the upper display (the 11111 key is for test item increment and the 55555 key for testitem decrement).2. On the lower display, setting items applicable only to the test printing appear. Hold the 22222 and 66666keys down until a target item is displayed (the 22222 key is for item increment and the 66666 key for itemdecrement). When the setting for the item is not required (left at its default), go to step 5.3. With the press of the 33333, 77777, the setting item and its setting are displayed on the upper and lowerparts, respectively.Pressing the 33333 key increments a setting. Pressing the 77777 key decrements a setting. (The lastdisplayed setting is applied.) Repeat step 3 as necessary.• A value in the shaded section is initial. The set values are applicable only to this test mode(No writing into EEPROM is performed.)• When the 33333 key is pressed, with “PRINT EXECUTE” on the lower display after step 2, thetest printing is executed using the values designated in steps 2 and 3. Pressing the 77777 keysuspends the test printing.SWITCH SCAN 001=H 2=L 3=H 4=LDisplayPRINT EXECUTETEST PATTERN(TBD)CASSETCOLORFUSERDUPLEXFunctionStarts printing at the press of + key/ Ends printing at the press of - key.Selects one of printing patterns:1: LED Head Drive Pattern2: Color Registration Adjust Pattern3: ReservedSelects a paper-loading end.Note: When the loading end is set to NONE, only the heater and drivablemotors operate without the IDs and belt being driven.Selects between color-monochrome printings.Selects between heater-on and -off.Selects between duplex-on and -off.Prints on both sides of one sheet of paper and then on the second sheetwhen ON is selected.Setting–123TRAY1TRAY2TRAY3FFNONEONOFFONOFFONOFF
