NEC MT-2550-24874C Manuals

Manuals and User Guides for NEC MT-2550-24874C. We have 1 NEC MT-2550-24874C manual available for free PDF download: Service Manual

NEC MT-2550-24874C Service Manual

NEC MT-2550-24874C Service Manual (214 pages)

Brand: NEC | Category: Desktop | Size: 1.84 MB

Table of Contents

Table of Contents
2
Preface
14
Abbreviations
15
List of Tables

17
Section 1 Technical Information

17
- Powermate Professional Series System Configurations
  17
- List of Figures
  
  19
- System Chassis
  19
- System Controls and Storage Device Slots
  19
- Rear Panel Features
  20
- System Board
  20
- System Board Feature Components
  22
  - Processor and Secondary Cache
    23
  - System BIOS
    23
- System Memory Map
  24
  - I/O Addressing
    25
- I/O Address Map
  25
  - System Memory
    26
  - Interrupt Controller
    27
- Interrupt Level Assignments
  27
  - Plug and Play
    28
  - ISA Bus
    28
  - PCI Local Bus
    28
  - PCI/IDE Ports
    29
  - Parallel Interface
    29
- Parallel Port Addressing and Interrupts
  29
  - Serial Interface
    30
- Serial Port Addressing and Interrupts
  30
  - Infrared Interface
    31
- Video Board
  31
  - Video Support
    32
- Matrox Mystique Video Board Support
  32
- Number Nine Imagine Video Board Support
  32
  - Video Playback
    33
- Audio
  33
- Audio Subsystem Resources
  34
- SCSI Board
  34
- Diskette Drive
  35
- Hard Disk Drive
  35
  - IDE Hard Drives
    35
  - SCSI Hard Disk
    36
- IDE Hard Disk Drive Jumper Settings
  36
  - CD-ROM Reader Settings
    37
- Sixteen-Speed CD-ROM
  36
  - CD-ROM Reader Operation
    36
- CD-ROM Reader Controls and Indicators
  37
- CD-ROM Jumper Settings
  38
- Keyboard
  38
- Mouse
  38
- Power Supply
  38
- Speakers
  38
- Specifications
  39
- Power Button
  40
Section 2 Setup and Operation

43
- Unpacking and Repacking
  43
- System Setup
  43
  - Keyboard, Mouse, and Power Cable Connection
    43
- Voltage Selector Switch
  44
- Keyboard/Mouse Connections
  44
  - Monitor Connection
    45
  - Speaker and Microphone Connections
    45
- Monitor Signal Cable Connection
  45
- Right Speaker
  46
- Speaker Cables
  46
- Connecting the Two Speakers
  47
- Attaching the Microphone and Y-Cable
  48
- Connecting the AC Adapter
  48
- Starting up
  49
- The Setup Utility
  49
  - When to Use Setup
    50
  - How to Start Setup
    51
  - How to Use Setup
    52
  - Main Menu
    52
- Navigation Keys
  52
  - System Date/Time
    53
  - Diskette Drive
    53
  - IDE Devices
    53
  - Language
    55
  - Boot Options
    56
  - Power-On COM1 Ring
    58
  - Video Mode
    59
  - Mouse
    59
  - Base Memory
    59
  - Extended Memory
    59
  - BIOS Version
    59
  - Advanced Menu
    59
    
    Peripheral Configuration
    59
    
    Advanced Chipset Configuration
    59
    
    Power Management Configuration
    59
    
    Plug and Play Configuration
    59
- Hot Key Parameters
  66
  - Security Menu
    69
- Security Passwords
  70
  - Enter Password and Set Administrative Password
    71
  - Unattended Start
    71
  - Security Hot Key (CTRL-ALT-)
    72
  - Exit Menu
    72
    
    Exit Saving Changes
    72
    
    Exit Discarding Changes
    73
    
    Load Setup Defaults
    73
    
    Discard Changes
    73
- Flash Utility
  73
  - NECCSD Bulletin Board Service
    74
  - Flash Utility
    75
- Scsiselect Utility
  76
- Landesk Client Manager
  76
  - Landesk Client Manager Setup
    77
  - Features
    77
  - PC Health Indicator
    77
    
    Managing Workstations
    77
    
    PC Health Meter
    77
    
    PC Health Meter
    78
    
    PC Health Description
    78
  - Inventory
    79
  - Using DMI
    79
  - NEC Magiceye Technology
    80
- Video Drivers
  80
  - Changing Display Properties
    81
    
    Windows 95
    81
    
    Windows NT 4.0
    82
- CD Restore
  83
  - Selecting CD Restore Options
    83
    
    Restore Individual Files
    83
    
    System Recovery
    83
  - Restoring Individual Files
    84
    
    Selecting Files
    85
    
    Checking Selected Files
    85
    
    Restoring the Files
    86
  - Recovering the System
    86
- Windows NT 4.0 Application CD Installation Instructions
  87
  - Mcafee Virusscan Installation
    87
  - Landesk Client Manager Installation
    88
    
    Local Mode
    88
    
    Administrator Mode
    89
- Driver CD Installation Instructions
  90
Section 3 Option Installation

99
- General Rules for Installing Options
  99
  - Precautions
    99
  - Optional Hardware
    100
- Removing the System Unit Cover
  101
  - Removing the Cover
    101
  - Replacing the System Unit Cover
    103
- Adding Internal Options
  104
- System Unit Cover Replacement
  104
  - Expansion Boards
    105
- System Board Upgrade Sockets and Connectors
  105
  - Slot Locations
    106
  - Expansion Board Installation
    106
- Expansion Slot Locations
  106
  - Expansion Board Removal
    108
  - SIMM Upgrade
    109
    
    Checking the Memory in the System
    109
- Recommended Memory Upgrade Path
  110
  - SIMM Removal
    111
  - SIMM Installation
    111
  - Video Upgrade
    112
  - Data Storage Devices
    114
    
    Device Support
    114
    
    Device Slots
    114
    
    Device Preparation
    114
    
    Device Cables
    114
- Storage Device Slots
  115
  - Diskette Drive Signal Cable
    116
- System Board Cable Connectors
  117
- Diskette Drive Signal Cable
  117
  - IDE Signal Cables
    118
  - SCSI Cable
    118
- IDE Cable Connectors
  118
  - System Power Cables
    119
  - Cabling an IDE or SCSI Device
    119
- Power Cable Connectors
  119
  - Cabling a Diskette Drive
    120
  - Storage Device Installation
    121
    
    1/2-Inch Drive Installation
    121
    
    Removing the Side Panel
    124
    
    Removing the Front Panel
    125
    
    Installing the 5 1/4-Inch Device
    127
    
    Replacing the Front and Side Panels
    129
- Adding External Options
  129
  - Parallel Printer
    130
  - Serial Devices
    130
  - SCSI Devices
    131
Section 4 Maintenance and Troubleshooting

133
- NECCSD Service and Information Telephone Numbers
  133
- Online Services
  134
  - Nec's Fastfacts Service
    134
  - NECCSD Bulletin Board Service
    135
  - E-Mail/Fax Technical Support Service
    137
  - Internet
    137
  - NECCSD Technical Support Services
    138
- Maintenance
  138
  - System Cleaning
    138
  - Keyboard Cleaning
    139
  - Mouse Cleaning
    139
- Troubleshooting
  140
  - Error Messages
    140
- System Error Messages
  141
- PCI Error Messages
  142
  - Diagnosing and Solving Problems
    143
- Problems and Solutions
  144
  - Beep Codes
    149
  - CMOS Battery Replacement
    149
- Diagnostic Beep Codes
  149
Section 5 Repair

151
- Disassembly and Reassembly
  151
- Powermate Professional Series System Unit Disassembly Sequence
  151
  - System Unit Cover Removal
    152
  - Side Panel Removal
    154
  - Expansion Board Removal
    154
  - SIMM Removal
    155
- Expansion Board Removal
  155
- System Board SIMM Sockets
  156
- Diskette Drive Removal
  158
  - 1/2-Inch Hard Disk Drive Removal
    160
  - 1/4-Inch Device Removal
    161
  - Power Supply Removal
    163
- Power Supply Ducting (266-Mhz Models)
  164
  - System Board Removal
    165
  - Processor Subsystem Removal
    166
- Illustrated Parts Breakdown
  167
- Powermate Professional Series Field-Replaceable Parts List
  167
- Powermate Professional Series Options
  171
- Powermate Professional Series Documentation and Packaging
  171
Appendix A Connector Pin Assignments

172
- I/O, Power Supply, and Chassis Intrusion Connectors
  172
  - Connector Pin Assignments
    172
  - Parallel Interface Connector
    173
- System Board Chassis Intrusion, Power, and I/O Connector Locations
  173
  - Serial Interface Connectors
    174
  - Keyboard and Mouse Connectors
    175
  - USB Connectors
    176
  - Audio/MIDI Connectors
    176
  - Power Supply Connector
    177
  - Chassis Intrusion Connector
    178
- Storage Device Connectors
  178
- Storage Device Connector Locations
  178
  - Diskette Drive Connector
    179
  - IDE Connectors
    180
- LED Connectors
  181
  - Hard Drive LED Connector
    181
  - Power LED Connector
    182
  - Reset Button Connector
    182
  - Infrared Connector
    183
  - Sleep Connector
    183
  - Power on Connector
    184
- ISA, PCI, and SIMM Connectors
  184
  - ISA Pin Assignments
    184
- PCI, ISA, and SIMM Connector Locations
  184
  - PCI Pin Assignments
    186
  - SIMM Sockets
    187
Appendix B System Board Settings

189
- Changing Jumper Settings
  190
  - System Board Jumper Locations
    191
- Locating System Configuration Jumpers
  191
  - Changing System Board Jumper Settings
    192
    
    Processor/Bus Speed Jumpers
    192
    
    BIOS Recovery
    194
    
    Clearing CMOS
    195
    
    Denying Access to CMOS Setup
    196
    
    Clearing the Password
    198
Appendix C Hard Disk Drive Specifications

200
- Specifications
  200
- Hard Disk Drive Specifications
  201
Appendix D CD-ROM Reader Specifications and Jumper Settings

204
- CD-ROM Reader Specifications
  204
- CD-ROM Reader Connectors and Jumper Settings
  205

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