DEC DECstation 425c Desktop Computer Manuals

Manuals and User Guides for DEC DECstation 425c Desktop Computer. We have 1 DEC DECstation 425c Desktop Computer manual available for free PDF download: Service Manual

DEC DECstation 425c Service Manual

DEC DECstation 425c Service Manual (94 pages)

Brand: DEC | Category: Desktop | Size: 0 MB

Table of Contents

Table of Contents
5
About this Manual

9
- Intended Audience
  9
- Ordering Parts
  10
- Related Documentation
  11
Figures

13
Overview

13
- Introduction
  13
- Decstation Personal Computer
  13
- Decstation Base System
  14
- Decstation Options
  15
- System Unit Layout
  15
- Decstation System Conﬁgurations
  16
- System Unit Layout
  16
Tables

17
- Base System Conﬁgurations
  17
- Decstation Main Logic Board
  19
- Decstation 316 + CPU Board
  19
- Decstation 325 CCPU Board
  19
- Decstation 333 CCPU Board
  20
- Decstation 320 + CPU Board
  20
- Decstation 425 CCPU Board
  20
- Power Supply
  20
- Monitors
  20
- Monitors
  21
- Video Graphics Array Adapter
  23
- Enhanced Keyboards
  23
- 101-Key Enhanced Keyboard
  23
- LK250 Keyboard
  24
- Math Coprocessor
  24
- Math Coprocessors
  24
Troubleshooting

25
- Special Tools
  25
- Diagnostics
  26
- Troubleshooting Tools
  26
- Normal Power up
  27
- Troubleshooting Procedures
  27
- Getting Started
  27
- System Does Not Boot
  28
- System Boots
  28
- Power up Beep Codes
  30
- Primary Beep Codes
  32
- Secondary Beep Codes
  33
- Test Messages
  35
- BIOS Error Messages
  35
- Troubleshooting by Symptom
  37
- System Unit Problems
  37
- System Unit Troubleshooting Procedures
  37
- Disk Related Problems
  40
- Hard Disk and Diskette Drive Troubleshooting Procedures
  40
- Monitor Problems
  41
- Monitor Troubleshooting Procedures
  41
- Troubleshooting Problems Occurring During System Operation
  44
- Using the System Utilities Diskette
  45
- Running the Setup Program
  45
FRU Replacement

47
- Introduction
  47
CCPU Board

47
Decstation 325 C / 333 CCPU Board

59
Power Consumption

85
- Decstation Base System Power Consumption
  85
- B–1 Parallel I/O Port Connector
  87
Peripheral Interface

88

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