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viii Contents
Section 5 Repair
Disassembly and Reassembly........................................................................................ 5-1
System Unit Cover Removal ................................................................................. 5-2
Side Panel Removal .............................................................................................. 5-4
Expansion Board Removal .................................................................................... 5-4
SIMM Removal .................................................................................................... 5-5
Front Panel Assembly Removal ............................................................................. 5-7
Blank Panel and Metal Cover Plate Removal.........................................................5-7
3 1/2-Inch Diskette Drive Removal .......................................................................5-8
3 1/2-Inch Hard Disk Drive Removal .................................................................... 5-10
5 1/4-Inch Device Removal................................................................................... 5-11
Power Supply Removal......................................................................................... 5-13
System Board Removal......................................................................................... 5-15
Processor Subsystem Removal .............................................................................. 5-16
Illustrated Parts Breakdown ......................................................................................... 5-17
Appendix A Connector Pin Assignments
I/O, Power Supply, and Chassis Intrusion Connectors ..................................................A-1
Parallel Interface Connector .................................................................................. A-2
Serial Interface Connectors ................................................................................... A-3
Keyboard and Mouse Connectors.......................................................................... A-4
USB Connectors ................................................................................................... A-5
Audio/MIDI Connectors .......................................................................................A-5
Power Supply Connector ...................................................................................... A-6
Chassis Intrusion Connector.................................................................................. A-7
Storage Device Connectors..........................................................................................A-7
Diskette Drive Connector...................................................................................... A-8
IDE Connectors .................................................................................................... A-9
LED Connectors .......................................................................................................... A-10
Hard Drive LED Connector .................................................................................. A-10
Power LED Connector.......................................................................................... A-11
Reset Button Connector........................................................................................ A-11
Infrared Connector................................................................................................ A-12
Sleep Connector.................................................................................................... A-12
Power On Connector ............................................................................................A-13
ISA, PCI, and SIMM Connectors.................................................................................A-13
Summary of Contents for MT-2550-24874C
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