41316401TH Rev.4 100 /4.1.2 Engine maintenance modeThe engine maintenance mode includes three modes, levels 1 to 3. The level 1 aims to assist inchecking the media transport systems and the basic operations of printing systems etc. The level2, which sets the consumable counter and tests the color registration adjustment function, doesnot require relatively special knowledge. Working with the level 3, including process parametersetting, takes expertise and the level contains PU individual experimental elements. Basically donot use items other than those in the level 1.4.1.2.1 Operator panelOperational descriptions about the self-diagnosis are premised on the following operator panellayout.4.1.2.2 General self-diagnosis mode (level 1)Following is the menu of the general self-diagnosis mode.• Switch Scan Test• LED Head Test• Motor and Clutch Tests• Test Pattern Execution• NVM Initialization• Consumable Counter Display• Consumable Counter Display - Continuous4.1.2.2.1 Entering self-diagnosis mode (level 1)1. Detach the main controller board.2. While holding the 11111 and 44444 keys down at the same time, turn the power on to enter this mode.3. “ENGINE DIAG MODE XX.XX” appears in the upper display. XX.XX shows the version ofROM.4. Go to each self-diagnosis step by using the 11111 and 55555 keys (pressing 11111 and 55555 keys rotates themenu items).4.1.2.2.2 Exiting self-diagnosis mode1. While “ENGINE DIAG MODE XX.XX” is displayed, press the (0) key, or turn the power off and,after ten seconds, on again.ENGINE DIAG MODE XX.XX
