HP Model 715/100XC - Workstation User manual

Service Handbook
HP 9000 Series 700
Model 715 Workstations
HP Part Number. A2600–90039
Click to go to the Table of Contents
3404East Harmony Road, Fort Collins, CO. 80525

ii

The information contained in this document is subject to change without notice.
HEWLETT–PACKARD MAKES NO WARRANTY OF ANY KIND WITH REGARD TO THIS MANUAL, IN-
CLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
FOR A PARTICULAR PURPOSE. Hewlett–Packard shall not be liable for errors contained herein or direct,
indirect, special, incidental, or consequential damages in connection with the furnishing, performance, or
use of this material.
A copy of the specific warranty terms applicable to your Hewlett–Packard product and replacement parts
can be obtained from your local Sales and Service Office.

CopyrightHewlett–Packard Company 1995
This document contains information which is protected by copyright. All rights are reserved. Reproduction, adapta-
tion, or translation without prior written permission is prohibited, except as allowed under the copyright laws.
Restricted Right Legend
Use, duplication or disclosure by the U.S. Government Department of Defense is subject to restrictions as set forth in
paragraph (b)(3)(ii) of the Rights in Technical Data and Software clause in FAR 52.227–7013.
CopyrightAT & T, Inc. 1980, 1984
CopyrightThe Regents of the University of California 1979, 1980, 1983
This software and documentation is based in part on the Fourth Berkeley Software Distribution under licence from
the Regents of the University of California.

iii
Printing History
New Editions of this manual incorporate all material updated since the previous edi-
tion. Update packages may be issued between editions and contain replacement and
additional pages to be merged into the manual by the user.
The manual printing date and part number indicate its current edition. The printing
date changes when a new edition is printed. (Minor corrections and updates which
are incorporated at reprint do not cause the date to change.) The manual part number
changes when extensive technical changes are incorporated.
October 1992 Edition 1 (P/N A2084–90602)
Update to A2084–90602 (P/N A2673–90099)
July 1993 Edition 2 (P/N A2084–90617)
May 1994 Edition 3 (P/N A2084–90630)
August 1995 Edition 4 (P/N A2600–90039)

iv
Emissions Regulations
Federal Communications Commission (FCC)
The Federal Communications Commission of the U.S. government regulates the ra-
dio frequency energy emanated by computing devices through published regulations.
These regulations specify the limits of radio frequency emission to protect radio and
television reception. All HP nodes and peripherals have been tested and comply with
these limits. The FCC regulations also require that computing devices used in the
U.S. display the agency’s label and that the related documentation include the follow-
ing statement:
NOTICE: This equipment has been tested and found to comply
with the limits for a Class A digital device, pursuant
to part 15 of the FCC rules. These limits are designed
to provide reasonable protection against harmful in-
terference when the equipment is operated in a com-
mercial environment. This equipment generates, uses,
and can radiate radio frequency energy and, if not
installed and used in accordance with the instruction
manual, may cause harmful interference to radio
communications. Operation of this equipment in a
residential area is likely to cause harmful interference
in which case the user will be required to correct the
interference at his own expense.
Compliance to these regulations requires the use of shielded cables.
Canadian Department of Communications (CDC)
This digital apparatus does not exceed the Class A limits for radio noise emissions
from digital apparatus as set out in the Radio Interference Requirements of the Cana-
dian Department of Communications.
Compliance to these regulations requires the use of shielded cables.

v
VCCI Class 1 ITE
Emissions Regulations Compliance
Any third–party I/O device installed in HP system(s) must be in accordance with the
requirements set forth in the preceding Emissions Regulations statements. In the
event that a third–party noncompliant I/O device is installed, the customer assumes
all responsibility and liability arising therefrom.
Compliance to these regulations requires the use of shielded cables.
Electrostatic Discharge (ESD) Precautions
Electrostatic charges can damage the integrated circuits on printed circuit boards. To
prevent such damage from occurring, observe the following precautions when un-
packing and installing the board.
SStand on a static–free mat.
SWear a static strap to ensure that any accumulated electrostatic charge dis-
charges from your body to ground.
SConnect all equipment together, including the static–free mat, static straps,
routing nodes, and peripheral units.
SKeep uninstalled printed circuit boards in their protective antistatic bags.
SOnce you have removed the printed circuit boards from their protective antis-
tatic bags, handle them by their edges.

vi
Laser Safety Statement (For U.S.A. Only)
(For workstations that have a CD ROM drive installed.)
The CD ROM mass–storage system is certified as a Class–1 laser product under the
U.S. Department of Health and Human services (DHHS) Radiation Performance
Standard according to the Radiation Control for Health and Safety Act of 1968.
This means that the mass–storage system does not produce hazardous laser radiation.
Because laser light emitted inside the mass–storage system is completely confined
within protective housings and external covers, the laser beam cannot escape from
the machine during any phase of user operation.

vii
Warnings and Cautions
WARNING:
Removing device cover may expose sharp edges in equipment chassis. To avoid injury,
use care when installing customer add–on devices.
WARNUNG:
Das Entfernen der Geräteabdeckung legt die scharfen Kanten im Inneren des Gerätes
frei. Um Verietzungen zu vermeiden, seien Sie vorsichtig beim Einbau von zusätzlichen
Bauteilen, die vom Kunden selber eingebaut werden können.
AVERTISSEMENT:
Des bords tranchants du châssis de l’équipement peuvent être exposés quand le cache de
l’unité n’est pas en place. Pour éviter des blessures, faire très attention lors de
l’installation de modules supplémentaires par le client.
WARNING:
Disconnect power plug from wall outlet or source power before moving or removing the
device, or installing add–on components.
WARNUNG:
Entfernen Sie die Stromzuführung von der Steckdose oder der Stromquelle bevor Sie das
Gerät bewegen, abbauen, oder zusätzliche Bauteile installieren.
AVERTISSEMENT:
Débrancher la fiche de la prise de courant ou de la source d’alimentation électrique avant
de déplacer ou de retirer l’unité, ou avant d’installer des modules supplémentaires.
CAUTION:
System power cord must be plugged into an accessible dedicated ac mains receptacle.
VORSICHT:
Das System–Netzanschlußkabel muß an eine zugängliche spezielle Wechselstrom–
Hauptzuführungssteckdose angeschlossen werden.
ATTENTION:
Le fil d’alimentation électrique du système doit être branché dans une prise de courant
c.a. spécialisée accessible.

ix
Table of Contents
Product Information 1–1
Product Description 1–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
System Unit Controls and Front Panel Connectors 1–4. . . . . . . . . . .
Understanding the LEDs 1–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
System Unit Rear Panel Connectors 1–7. . . . . . . . . . . . . . . . . . . . . . .
SCSI Connector 1–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
HP Parallel I/O Connector 1–9. . . . . . . . . . . . . . . . . . . . . . . . . . .
HP–HIL Connector 1–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10–Pin Modular Jack 1–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RS–232 Serial Input/Output Connectors 1–9. . . . . . . . . . . . . . . .
802.3 Network Connector 1–10. . . . . . . . . . . . . . . . . . . . . . . . . .
Built–In Graphics Connector 1–10. . . . . . . . . . . . . . . . . . . . . . . .
Optional Connector for EISA, CRX, or HCRX Graphics 1–11. .
                                      
                        
Power Cord Connector 1–12. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Audio Line In and Audio Line Out Connectors 1–12. . . . . . . . .
Monitor Controls, Connectors, and Indicators 1–13. . . . . . . . . . . . . .
Keyboards 1–14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Keyboard Differences 1–14. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Environmental/Installation/PM 2–1
Environmental Specifications 2–1. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Regulatory Requirements 2–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 2–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Preventive Maintenance 2–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

x
Configuration 3–1
Workstation and System Unit Configurations 3–1. . . . . . . . . . . . . . .
FRU Configurations 3–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mass Storage Configurations 3–1. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installing Additional Memory 3–15. . . . . . . . . . . . . . . . . . . . . . . . . .
Changing the Built–In Graphics Configuration Switches
(Models 715/C, 715/33, 715/50, 715/75) 3–17. . . . . . . . . . . . . . .
Configuring the CRX Graphics Options 3–18. . . . . . . . . . . . . . . . . . .
Setting Up a Single Monitor System 3–18. . . . . . . . . . . . . . . . . .
Setting Up a Dual Monitor System 3–21. . . . . . . . . . . . . . . . . . .
Troubleshooting 4–1
LED Error Codes 4–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dealing with a Boot Failure 4–13. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Boot Administration Environment 4–14. . . . . . . . . . . . . . . . . . .
Stable Storage 4–15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Boot Command Notations 4–16. . . . . . . . . . . . . . . . . . . . . . . . . .
Supported Boot Paths 4–16. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ISL Environment 4–17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Invoking the ISL Environment from a SCSI Device 4–17. . . . . .
ISL User Commands 4–19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Running the ISL-Based Diagnostics 4–19. . . . . . . . . . . . . . . . . .
Verifying the System Operation with SupportWave 4–21. . . . . . . . . .
Dealing With HPMC (Uncorrectable Error) 4–23. . . . . . . . . . . . . . . .
HPMC Caused by a Multi-Bit Memory Parity Error 4–25. . . . .
HPMC Caused by a Data Cache Parity Error 4–29. . . . . . . . . . .
Troubleshooting CRX and HCRX Graphics 4–30. . . . . . . . . . . . . . . .
Field Replaceable Units 5–1
External Graphics Processor 5–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Floor Stand 5–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Opening the System Unit 5–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Disk Drives 5–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Supply 5–17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Front Audio Board Assembly 5–18. . . . . . . . . . . . . . . . . . . . . . . . . . .
Front Bezel Cover Plate Assembly 5–19. . . . . . . . . . . . . . . . . . . . . . .
EISA Assembly Components 5–20. . . . . . . . . . . . . . . . . . . . . . . . . . .
Removing the EISA Assembly Components (End Cap) 5–21. . .
Removing EISA Assembly Components (Retaining Clips) 5–24
Installing the EISA Assembly Components (End Cap) 5–27. . . .
Installing EISA Assembly Components (Retaining Clips) 5–32.

xi
CRX and HCRX Graphics 5–35. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear Audio Board 5–39. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Memory 5–40
PCX-T Module (Model 715/75) 5–42. . . . . . . . . . . . . . . . . . . . . . . . .
Processor Board 5–45. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
System EEPROM 5–50. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Calendar Battery 5–51. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Diagrams 6–1
Reference 7–1
Service Notes 8–1
Index

xii
Figures Click on the page number to view afigure
1–1 System Unit Controls 1–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1–2 Front Panel LEDs 1–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1–3 System Unit Rear Panel Connectors 1–8. . . . . . . . . . . . . . . . . . .
1–4 CRX and HCRX Graphics Connector 1–11. . . . . . . . . . . . . . . .
1–5 CRX–48Z Graphics Connections 1–12. . . . . . . . . . . . . . . . . . . .
3–1 Default SCSI IDs 3–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–2 Quantum 525–MB and 1–GB Disk Drive Jumpers 3–3. . . . . . .
3–3 Quantum 1–GB/2–GB Low Profile Disk Drive Jumpers 3–4. . .
3–4 Hewlett–Packard 1–GB Winchester Drive Jumpers 3–5. . . . . . .
3–5 Seagate 525–MB/1–GB/ 2–GB Winchester Drive Jumpers 3–6.
3–6 Micropolis 1–GB Winchester Drive Jumpers 3–7. . . . . . . . . . . .
3–7 Quantum 210–MB/425–MB Winchester Drive Jumpers 3–8. . .
3–8 DEC 1–GB and 2–GB Disk Drive Jumpers 3–9. . . . . . . . . . . . .
3–9 Hewlett–Packard 420–MB Drive Jumpers 3–10. . . . . . . . . . . .
3–10 Hewlett–Packard 1–GB/2–GB Drive Jumpers 3–11. . . . . . . .
3–11 SCSI Floppy Drive Address Jumper Settings 3–12. . . . . . . . . .
3–12 CD–ROM SCSI Address Jumper Settings 3–13. . . . . . . . . . . .
3–13 DDS SCSI Address Jumper Settings 3–14. . . . . . . . . . . . . . . .
3–14 Memory SIMM Locations 3–15. . . . . . . . . . . . . . . . . . . . . . . .
3–15 Memory Connector Configuration 3–16. . . . . . . . . . . . . . . . . .
3–16 Changing the Graphics Configuration Switches 3–17. . . . . . . .
4–1 Front Panel LEDs 4–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4–2 LED Display for CRX or HCRX Graphics Check 4–30. . . . . . .
5–1 Illustrated Parts Breakdown 5–2. . . . . . . . . . . . . . . . . . . . . . . . .
5–2 Removing the External Graphics Processor 5–6. . . . . . . . . . . . .
5–3 Unlocking the Floor Stand 5–7. . . . . . . . . . . . . . . . . . . . . . . . . .
5–4 Removing the Floor Stand 5–7. . . . . . . . . . . . . . . . . . . . . . . . . .
5–5 Opening the System Unit 5–8. . . . . . . . . . . . . . . . . . . . . . . . . . .
5–6 Removing the First Hard Disk Drive 5–9. . . . . . . . . . . . . . . . . .
5–7 Removing the Second Hard Disk Drive 5–10. . . . . . . . . . . . . . .
5–8 Removing the Floppy, CD–ROM, or DDS Drive 5–11. . . . . . . .
5–9 Removing the Drive Brackets 5–12. . . . . . . . . . . . . . . . . . . . . . .
5–10 SCSI and PC Floppy Cable Connections 5–13. . . . . . . . . . . . .
5–11 SCSI Cable Connections 5–14. . . . . . . . . . . . . . . . . . . . . . . . . .
5–12 Connecting SCSI Cable to Processor Board 5–15. . . . . . . . . . .
5–13 CD–ROM Audio Cable 5–15. . . . . . . . . . . . . . . . . . . . . . . . . . .
5–14 Connecting the PC–Style Floppy Drive 5–16. . . . . . . . . . . . . .

xiii
Figures Click on the page number to view a figure
5–15 Removing the Power Supply 5–17. . . . . . . . . . . . . . . . . . . . . .
5–16 Removing the Front Audio Board Assembly 5–18. . . . . . . . . .
5–17 Removing the Blank Cover Plate 5–19. . . . . . . . . . . . . . . . . . .
5–18 EISA Option Mounting 5–20. . . . . . . . . . . . . . . . . . . . . . . . . . .
5–19 Removing the EISA Adapter Assembly (End Cap) 5–21. . . . .
5–20 Disconnecting the EISA Board from the Adapter Board 5–22.
5–21 Removing the Connector Bucket 5–22. . . . . . . . . . . . . . . . . . .
5–22 Removing the End Cap 5–23. . . . . . . . . . . . . . . . . . . . . . . . . . .
5–23 Unsecuring the EISA Board 5–24. . . . . . . . . . . . . . . . . . . . . . .
5–24 Removing the EISA Assembly (Retainer Clips) 5–25. . . . . . .
5–25 Disconnecting the EISA Board 5–26. . . . . . . . . . . . . . . . . . . . .
5–26 Removing the Connector Bucket 5–26. . . . . . . . . . . . . . . . . . .
5–27 Installing the End Cap 5–27. . . . . . . . . . . . . . . . . . . . . . . . . . . .
5–28 Installing the Connector Bucket 5–28. . . . . . . . . . . . . . . . . . . .
5–29 Connecting the EISA Board 5–29. . . . . . . . . . . . . . . . . . . . . . .
5–30 Inserting the EISA Assembly 5–30. . . . . . . . . . . . . . . . . . . . . .
5–31 Securing the EISA Board with the End Cap 5–31. . . . . . . . . . .
5–32 Installing the Connector Bucket 5–32. . . . . . . . . . . . . . . . . . . .
5–33 Connecting the EISA Board 5–32. . . . . . . . . . . . . . . . . . . . . .
5–34 Inserting the EISA Assembly (Retaining Clips) 5–33. . . . . . . .
5–35 Securing the EISA Board(Retaining Clips) 5–34. . . . . . . . . . .
5–36 Removing the CRX or HCRX Graphics 5–36. . . . . . . . . . . . . .
5–37 Removing the Bucket and Flex Cable 5–37. . . . . . . . . . . . . . .
5–38 Removing the Mounting Bracket 5–38. . . . . . . . . . . . . . . . . . .
5–39 Removing the Rear Audio Board 5–39. . . . . . . . . . . . . . . . . . .
5–40 Removing Memory Boards 5–40. . . . . . . . . . . . . . . . . . . . . . . .
5–41 Installing Memory Boards 5–41. . . . . . . . . . . . . . . . . . . . . . . .
5–42 Disconnecting the PCX-T Grounding Wire 5–42. . . . . . . . . . .
5–43 Disconnecting the PCX-T Module 5–43. . . . . . . . . . . . . . . . . .
5–44 Removing the PCX-T Module 5–44. . . . . . . . . . . . . . . . . . . . .
5–45 Removing the Processor Board 5–46. . . . . . . . . . . . . . . . . . . . .
5–46 Component and Internal Connector Locations
Model 715/C, 715/33, and 715/50 5–47. . . . . . . . . . .
5–47 Component and Internal Connector Locations
Model 715/64, 715/80, 715/100, 715/100XC 5–48. .
5–48 Component and Internal Connector Locations 715/75 5–49. . .
5–49 Removing the EEPROM (UV17) 5–50. . . . . . . . . . . . . . . . . . .
5–50 Removing the Calendar Battery 5–51. . . . . . . . . . . . . . . . . . . .

xiv
Figures
6–1 Power Distribution Diagram 6–1. . . . . . . . . . . . . . . . . . . . . . . . .
6–2 System Unit Functional Block Diagram
Model 715/C, 715/33, 715/50, and 715/75 6–3. . . . . .
6–3 System Unit Functional Block Diagram
Model 715/64, 715/80, 715/100, and 715/100XC 6–4.
Tables Click on the page number to view a table
1–1 LED Display During Normal System Activity 1–6. . . . . . . . . . .
1–2 Serial I/O Pins 1–10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1–3 PC/AT Keyboard to ITF Keyboard Equivalent Keys 1–15. . . . .
2–1 Environmental Specifications for Models 715 2–1. . . . . . . . . .
4–1 Model 715/C, 715/33, 715/50, 715/75 LED Error Codes 4–3. . .
4–2 Model 715/C, 715/33, 715/50, 715/75 PDC LED Codes 4–6. . .
4–3 Model 715/C, 715/33, 715/50, 715/75 ISL LED Codes 4–8. . .
4–4 Model 715/C, 715/33, 715/50, 715/75 Kernel LED Codes4–10
4–5 Model 715/64, 715/80, , 715/100, 715/100XC LED Codes4–11
4–6 PIM_INFO Action 4–24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4–7 Multi-Bit Memory Parity Error 4–25. . . . . . . . . . . . . . . . . . . . . .
4–8 Memory Address Ranges 4–26. . . . . . . . . . . . . . . . . . . . . . . . . .
4–9 Processor Module Error (Data Cache Parity) 4–29. . . . . . . . . . .
5–1 FRU List 5–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5–2 EISA Interface Options 5–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6–1 Power Supply Connector P6 Pinouts 6–2. . . . . . . . . . . . . . . . . .
6–2 Power Supply Pinouts for Storage Device Connectors 6–2. . . .

Product Information 1–1
Product Information 1
This chapter introduces the Model 715 workstation, controls, and indicators. In-
cluded in this chapter are the following topics:
Product description
System unit controls
Understanding the LEDs
System unit rear panel connectors
Monitor controls, connectors, and indicators
Product Description
The HP 9000 Series 700 Model 715 workstation uses one of the following versions
of the HP–UX operating system:
Model 715/33, 715/50, and 715/C workstations use version 9.01 or later
Model 715/75 workstations use version 9.03 or later
Model 715/64, 715/80, 715/100, and 715/100XC workstations use version 9.05
or later
The Model 715 workstations can house up to two hard disk drives and a removable–
media drive, which are connected to the internal SCSI interface. The workstation is
available in diskless as well as disked configurations. Disked configurations have one
or two hard disk drives of the following densities: 525 MB, 1 GB, or 2 GB. These
hard disk drives are preformatted. The workstation’s removable–media drive can be
either a 3.5–inch floppy drive, a CD–ROM drive, or a DDS–format tape drive.
NOTICE: Model 715s/t workstations that have been upgraded
from a Model 425e, 705, or 710 system may have
210–MB and 420–MB hard disk drives.
Model 715/C has two 420–MB hard disk drives.
The workstation contains the following key features:
Operating Systems
– Native HP/UX
– DOS emulation
Source and binary code compatible with Series 700 product family

1–2 Product Information
Built–In Graphics
8–plane graphics with choice of one of the following:
– 19/20–inch 1280 x 1024 color monitor
– 19–inch 1280 x 1024 grayscale monitor (available only on the
Model 715/33, 715/50, and 715/75)
– 17–inch 1280 x 1024 color monitor (Model 715/64, 715/80, 715/100,
and 715/100XC)
– 17–inch 1024 x 768 color monitor (Model 715/33 and 715/50)
– 15–inch 1024 x 768 color monitor (Model 715/33)
Graphics Options
19/20–inch color monitor with choice of one of the following:
– 8–plane HCRX color graphics (available
only on the Model 715/64, 715/80, 715/100, and 715/100XC)
– 24–plane CRX color graphics
– 24–plane HCRX color graphics (available only on the Model 715/64,
715/80, 715/100, 715/100XC)
– 8–plane HCRX Z–buffered color graphics (available only on the
Model 715/64, 715/80, 715/100, and 715/100XC)
– 24–plane HCRX Z–buffered color graphics (available only on the
Model 715/64, 715/80, 715/100, and 715/100XC)
– 24–plane CRX Z–buffered color graphics
– 48–plane CRX Z–buffered color graphics (available only on the
Model 715/50, 715/75, 715/100, and 715/100XC)
Main Memory
– Model 715/33 8–192 MB
– Model 715/50 16–256 MB
– Model 715/64 32–256 MB
– Model 715/75 32–256 MB
– Model 715/80 32–256 MB
– Model 715/100 32–256 MB
– Model 715/C 32–256 MB
– Model 715/100XC 32–256 MB
Mass Storage
– 1–GB SCSI hard disk drive (full height, 3.5–inch, Micropolis, DMD, DEC,
and Seagate 1–GB drives are supported)
– 2–GB SCSI hard disk drive (full height, 3.5–inch, DEC or
Segate 2–GB drives are supported)
– 525–MB SCSI hard disk drive (low profile, 3.5–inch, Seagate and Quantum
525–MB drives are supported)
– 420–MB SCSI hard drive (full height, 3.5–inch, Quantum Pro 420s drive is
available on Model 715/C workstations, and on workstations that have
been upgraded from a Model 425e, 705, or 710)
– 210–MB SCSI hard drive (full height, 3.5–inch drive is supported only on
workstations that have been upgraded from a Model 425e, 705, or 710.)
– Floppy disk drive (3.5–inch)
– CD–ROM disk drive (5.25–inch)
– DDS–format tape drive (3.5–inch)
Network
– IEEE 802.3 AUI connection
– Supports connections to 10BASE2 (ThinNet), 10BASE5 (ThickNet),
and 10BASE–T (EtherTwist) networks with the use of an external
transceiver

Product Information 1–3
I/O
– Two 9–pin RS–232 Ports
– One 25–pin HP parallel port
– 8–bit, single–ended SCSI–2 interface
– HP–HIL port (715/C, 715/33, 715/50, and 715/75 systems only) for HP–UX
keyboards and other HP–HIL devices
– Dual mini–DIN ports on the Keyboard Adapter Module (715/64, 715/80, and
715/100 Systems only) for AT–style keyboard and other mini–DIN
(PS/2–style) devices
– CD–quality audio and speaker output
– CD–quality microphone or audio input
Expansion slot for one EISA card (optional on Model 715/33)

1–4 Product Information
System Unit Controls and Front Panel Connectors
Figure 1–1 shows the Power and TOC (Transfer Of Control) switches.
Use the Power switch to power the system unit on and off.
Use the TOC switch to reset the operating system. Do not push the TOC switch un-
less you have first shutdown the operating system by using the shutdown command.
NOTICE: Model 715/64, 715/80, 715/100, and 715/100XC
workstations are equipped with a soft shutdown fea-
ture. These systems shut down the file system auto-
matically when you power the system off.
Power Switch
TOC Switch
Front
Audio/Headphones OUT
Connector (Stereo)
Audio/Microphone IN
Connector (Stereo)
Figure 1–1. System Unit Controls
Figure 1–1 also shows the Audio connectors on the front panel. The workstation has
audio input and output capability through external input and output connectors and
an internal speaker. The line–in and line–out connectors are located on the rear panel
and are described later in this chapter. The front panel contains the Audio/Headphone
OUT and Audio/Microphone IN connectors.
The Audio/Headphone OUT connector is a stereo headphone output. The Audio/Mi-
crophone IN connector is a mono microphone input. The ring connector of the micro-
phone jack supplies +1.5 volts dc for microphones that require it. A microphone for

Product Information 1–5
audio input is not supplied with the workstation. The audio connectors are standard
stereo audio mini–jacks.
Understanding the LEDs
There are 9 Light Emitting Diodes (LEDs) located on the front of the system unit, as
shown in Figure 1–2. The green one on the far right is the Power LED. It lights when
the system unit power is on. The other eight are labeled 8 through 1 (left to right).
The rightmost four amber LEDs (labeled 4, 3, 2, and 1) show that the system is run-
ning the operating system and communicating over the network. Along with the left-
most four amber LEDs (8, 7, 6, and 5), they also help you to troubleshoot the work-
station by coming on in certain patterns during system failures (see Chapter 4).
Front
     Power
LED
Figure 1–2. Front Panel LEDs
Table 1–1 lists how the LEDs report during normal HP–UX system activity. The
green Power LED remains lit while the system is powered on.

1–6 Product Information
Table 1–1. LED Display During Normal System Activity
1234
7658
LED Display
(1 Through 4 Flashing) Meaning
Operating System Running
Disk Access In Progress
Network Receive In Progress
Network Transmit In Progress
= LED On or Flashing

Product Information 1–7
System Unit Rear Panel Connectors
This section describes the following connectors on the system unit’s rear panel:
SCSI connector
HP parallel I/O connector
HP–HIL connector (Model 715/C, 715/33, 715/50, and 715/75 workstations)
10–pin modular jack (Model 715/64, 715/80, 715/100, and 715/100XC
workstations)
RS–232 serial input/output connectors
802.3 network connector
Built–in graphics connector
Optional connector for EISA, CRX, or HCRX graphics
Power cord connector
Audio connectors
NOTICE: To maintain FCC/EMI compliance, verify that all
cables are fully seated and properly fastened.
Figure 1–3 shows the locations of the connectors on the system unit’s rear panel. The
symbols shown are depicted on the rear panel.