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Plexus P/90 Maintenance Manual

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Contents
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Table of Contents

Table of Contents
Introduction
System Overview
Figure 1-1. P/90 System, Front View
Figure 1-2. P/90 System, Rear View
Backplane Configuration
The Host Adapter Board
Table 1-1. P/90 Card Cage Slot Assignments
Space Requirements
System Cabinet Dimensions and Weight
Floor Area Requirements
Table 1-2. Dimensions and Weight
Table 1-3. Service Clearance
Power Requirements
Voltage Characteristics
Input Current Characteristics
Table 1-4. Minimum Area
Table 1-5. Plexus Power Options
Grounding
Lightning Arrestors
Noise Suppressjon
Power Cords and Connectors
Environmental Requirements
Table 1-6. Environmental Requirements
Temperature and Humidity Ranges
Electrostatic Discharges
Figure 1-4. Temperature Range
Figure 1-5. Humidity Range
Cooling Requirements
Table 1-7. Sample Fixed Values for Temperature Rises
Cabling
Cable Lengths
General Considerations
Cable Termination
Cable Wiring
Table 1-8. Terminal/Serial Printer Cable Pinouts
Table 1-9. Synchronous Modem Cable Pinouts
Table 1-10. Asynchronous Modem Cable Pinouts
Table 1-12. Asynchronous Modem Cable Pinouts (DB-25)
Table 1-14. Parallel
Vmebus Backplane
Figure 1-6. Bus Grant Block Diagram
Vmebus Electrical Specifications
Uninterruptable Power Supply (UPS)
Figure 1-7. Vmebus Signal Levels
Preventive Maintenance
Equipment
Table 2-1. Preventive Maintenance Time Schedule
Cleaning Your System's Fan Filters
Figure 2-1. P/90 Fan Filter Removal
Maintaining Your 1/4-Inch Tape Drive
Replacing Your System Battery
Figure 2-3. System Battery Replacement
Cleaning Your System's Exterior
Maintaining Your Hard Disk Drives
Assembly/Disassembly
Figure 3-1. P/90 Main Cabinet Front View with Access Door Open
Removing Your System's Exteriors
Figure 3-3. Removing Your System's Exteriors
Removing Your System's Front Panel
Figure 3-4. Removal of the System's Front Panel
Removing a L1NC I/O Card
Removing Your 1/4-Inch Tape Drive
Removing Your Hard Disk Drive
Figure 3-7. Removing Your Hard Disk Drive
Removing Your Power Supply
Figure 3-8. Removing Your Power Supply
Removing Your VCP Backplane Card
Removing Your Tape Controller
Removing Your Disk Drive Controller
Figure 3-11. Removing a Disk Drive Controller
Removing a Backplane Jumper Block
Figure 3-12. Removing a Backplane Jumper Block
Figure 3-13. Rotating the Card Cage
Adding Another Controller Board
Figure 3-14. Adding Another Controller Board
Expansion Cabinet Assembly/Disassembly
Figure 3-16. Expansion Cabinet Rear View
Removing Your System's Exteriors
Figure 3-17. Removing Your System's Exteriors
Removing Your System's Front Panel
Removing Your Expansion Cabinet's Media Tray
Figure 3-19. Removal of an Expansion Cabinet Tray
Removing Your Hard Disk Drive
Figure 3-20. Removing Your Hard Disk Drive
Disk Drive Controller Removal
Figure 3-21. Removing a Disk Drive Controller
Power Supply Removal
Figure 3-22. Removing the Power Supply
Reference Information
Indicators
Backplane
Table 4-2. J1.(A,B;C) Vmebus Interface
Table 4-3. J2.(A.B.C) Vmebus Interface
Table 4-4. J3.(A,B,C) Plexus Proprietary Interface
Test Points
Figure 4-2. P/90 Test Point Locations (Arbiter Board)
Hard Disk Controller Board
Cartridge Tape Controller Board
Table 4-5. Disk Controller Switch Setting (F2)
Table 4-6. Disk Controller Switch Setting (E9)
Table 4-7. Tape Controller Switch Settings (U53)
Table 4-8. Tape Controller Switch Settings (U20)
Figure 4-3. Hard Disk Controller
Figure 4-4. Tape Controller Board
135 Megabyte Fujitsu Disk Drive
Table 4-9. 135 Megabyte Disk Drive Jumper CNH5
Table 4-10. 135 Megabyte Disk Drive Jumper CNH7
Table 4-11. 135 Megabyte Disk Drive Jumper CNH6
Disk Drive Fault Lamps (Leds)
Table 4-12. Disk Drive Fault Codes
300 Megabyte Fujitsu Disk Drive
Table 4-13. 300 Megabyte Disk Drive Jumper CNH5
Table 4-14. 300 Megabyte Disk Drive Jumper CNH7
Table 4-15. 300 Megabyte Disk Drive Jumper CNH6
Disk Drive Fault Lamps (Leds)
Table 4-16. Disk Drive Fault Codes
300 Megabyte Maxtor Disk Drive
Table 4-17. 300 Megabyte Disk Drive Jumpers JP16 - JP31
Power Supply
Power Supply Strapping
Main Cabinet Power Supply Adjustments
Table 4-19. Power Supply Strapping
Figure 4-5. Main Cabinet Power Supply Adjustments
Table 4-20. DC Voltage Checks and Adjustments
Expansion Cabinet Power Supply Adjustments
Figure 4-6. Power Supply Component Location
BOARD Descriptions
Table 5-1. P/90 Card Cage Slot Assignments
Electrostatic Discharges
The Job Processor Board
Figure 5-1. Job Processor Component Locations
Job Processor Switch Settings
Job Processor Jumper Settings
Job Processor Leds
Table 5-4. Job Processor Jumper Settings
Table 5-5. Job Processor Leds
Job Processor Test Points
Figure 5-2. Job Processor Leds
The Memory Board
Figure 5-3. Memory Board Component Location
Memory Board Switch Settings
Figure 5-4. Base Address of the First Memory Board
Memory Board Error Decoding
Table 5-6. Memory Board Error Decoding
Table 5-7. Memory Board Bank Select Decode
Table 5-8. Memory Board Bank Empty Decode
Table 5-9. Syndrome Error Code
Table 5-10. Memory Board Least Significant Bit (Diagnostic Latch)
Table 5-11. Memory Board most Significant Bit (Diagnostic Latch)
Memory Board Jumper Settings
Memory Board Leds
Memory Board Test Points
Figure 5-5. Memory Board Jumpers
Figure 5-6. Memory Board's Leds
The Vmebus Arbiter Board
Figure 5-7. Vmebus Arbiter Component Location
Bus Arbiter Board Switches
Table 5-12. Arbiter Board Time Delay Switch Settings
Table 5-13. Arbiter Board Switch Settings for U3C (U3C)
Table 5-14. Arbiter Board Interrupt Switch Settings U3A (U4A)
Table 5-15. Arbiter Board Power Supply Default Switch Settings
Bus Arbiter Board Leds
Figure 5-8. Arbiter LED Configuration
Table 5-16. Arbiter LED Functions
Bus Arbiter Board Test Points
Figure 5-9. Arbiter Test Point Locations
Table 5-17. Arbiter Board Test Points and Functions
Bus Arbiter Board Jumpers
Table 5-18. Arbiter Board Test Points
Table 5-19. Arbiter Board Jumper Settings
The Vmebus Communication Processor (VCP)
Figure 5-10. VCP (Type 1) Component Location
VCP Switch Settings
Figure 5-12. VCP LED Configuration
Figure 5-13. VCP Jumper-Pak Examples
Table 5-22. VCP Jumper Settings
The VCP Backplane Card
The LINC I/O Cards
Figure 5-15. LINC V16 Card
Figure 5-16. LINC P4 Card
The Multibus Adapter Board
DDN Interface Communication Board
DDN Switch Settings
Table 5-24. DDN Default Switch Settings
DDN Jumper Settings
Table 5-25. DDN Default Jumper Settings
Table 5-26. DDN Serial Interface Settings
DDN I/O Connector Plate
SNA Interface Communication Board
Table 5-27. DDN Comm Ports I/O Connector Plate
SNA Jumper Settings
Table 5-28. SNA Jumper Settings
Comm Ports I/O Connector Plate
Table 5-29. SNA Comm Ports I/O Connector Plate
The Ethernet Board
Figure 5-17. Ethernet Board Components
Table 5-30. Ethernet Board Jumper Settings
Table 5-31. Ethernet Board J3 - J6 Jumper Settings
The SCSI Host Adapter Board
Figure 5-18. SCSI Host Adapter Board
Table 5-32. SCSI Host Adapter Jumper Settings
Table 5-33. SCSI Host Adapter Switch Settings

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