UAIS DEBEG 3400, Electronics UnitED3047G142 / 08 (2004-06)Technical Manual6 Repair/Maintenance6.1 Trouble Shootingt_ue_e07.fm / 21.06.04516 Repair/MaintenanceGENERAL:The jumper settings and switch settings on a replacement pcb must bethe same as on the defective pcb. The wire connections must be madein exactly the same way. Exceptions are explained in this manual.6.1 Trouble Shooting6.1.1 HintsIn the case of problems during setting-to-work, the cabling should be checked again. All componentsmust be supplied with power.- To get more information about the problem, read the system fault messages on the screen and referto Section 8 on page 75.WatchdogIn various error conditions the internal watchdog of the system causes a reset. During the reset themessage "AIS offline" may be displayed at a connected display unit.