viii ContentsTable 1-3 Interrupt Level Assignments......................................................................... 1-5Table 1-4 DMA Assignments ....................................................................................... 1-6Table 2-1 Setup Key Functions .................................................................................... 2-4Table 3-1 Optional Memory Configurations ................................................................. 3-9Table 4-1 Problems and Solutions ................................................................................ 4-4Table 4-2 Beep Code Descriptions ............................................................................... 4-10Table 5-1 Disassembly Sequence.................................................................................. 5-1Table 5-2 Direction T-Series Desktop Field-Replaceable Parts List .............................. 5-12Table 5-3 Direction T-Series Minitower Field-Replaceable Parts List ........................... 5-15Table 5-4 Direction T-Series Memory Options............................................................. 5-18Table 5-5 Direction T-Series Documentation ............................................................... 5-18Table B-1 System Board Connectors............................................................................ B-1Table B-2 System Board Internal Connectors............................................................... B-3Table B-3 System Board Connector Numbers and Types ............................................. B-3Table-B-4 RS-232C Serial Port Connector Pin Assignments ........................................ B-4Table B-5 Parallel Port Connector Pin Assignments ..................................................... B-5Table B-6 Primary Power Supply Connector Pin Assignments...................................... B-6Table B-7 Keyboard and Mouse Connector Pin Assignments ....................................... B-6Table B-8 Front Panel Connector Pin Assignments....................................................... B-7Table B-9 Diskette Drive Connector Pin Assignments .................................................. B-8Table B-10 IDE/PCI Connector Pin Assignments......................................................... B-9Table B-11 DIMM Socket Pin Assignments ................................................................. B-10Table B-12 ISA Expansion Slot Pin Assignments ......................................................... B-11Table B-13 PCI Expansion Pin Assignments................................................................. B-13Table B-14 USB Connectors........................................................................................ B-14