HP Single-ended SCSI-2/Centronics host adapter board
Contents
1. closed 1 open Installing the Adapter 1 9 Verify that Resistor Packs are Properly Installed A SCSI bus has two ends between which SCSI devices are attached Each end of a SCSI bus must be terminated with a resistor network or terminator The adapter card contains two resistor packs mounted in sockets on the card These resistor packs act as a terminator for one end of the SCSI bus Note The SCSI port is supported for use only on the end of a SCSI bus The two resistor packs must be installed Visually verify that the two resistor packs are installed with the proper orientation The resistor packs are marked with a dot on one end and should be oriented as shown in figure 1 5 Termination Resistors Marked Ends Figure 1 5 Proper Resistor Pack Orientation 1 10 Installing the Adapter 4 Install and Connect the Card The HP PB cardcage accommodates two sizes of cards single high Eurocard standard 3U or double high 6U The SCSI parallel adapter is a single high 3U card and requires a single high slot HP computers are normally shipped with single high slots However this section contains information on converting a double high slot to two single high slots To install and connect the SCSI parallel adapter into the host computer read the steps described below 1 Select an appropriate slot 2 Record the slot number 3 Prepare the slot for use 4 Insert the card into the slot 52. HP PB card See adapter interface card See adapter vo Input Output The computer subsystem through which data communications with external devices is performed IODC VO Dependent Code In PA RISC computers IODC is ROM based firmware on an adapter card that is used for supplying card dependent information to the host computer This code may contain test routines that check operation of the card LED Light Emitting Diode a semiconductor component that emits light when electrically activated to serve as an indicator of operation or state loopback Generally the process of transmitting known data and comparing received data with expected results normally used during troubleshooting test or verification procedures Glossary 3 loopback hood A special connector with signal lines configured to allow loopback testing of the adapter card low density connector In reference to the SCSI bus a 50 conductor connector consisting of two rows of ribbon contacts spaced 2 16 mm 0 085 in apart See also high density connector parallel port The 25 pin connector on the SCSI parallel adapter card for 8 bit parallel data communications with an output only device such as a printer PA RISC Hewlett Packard s Precision Architecture Reduced Instruction Set Computing computer systems parity A method to check that data was accurately transmitted and received Usually the tranmission logic sums the transmitted d
3. During electrical transmission and reception signals are detemined by the difference between two lines that are both at different voltages relative to ground Differential SCSI signals can be used over longer distances and at higher data rates A differential SCSI bus is incompatible with a single ended SCSI bus Therefore differential SCSI devices may not be used with the SCSI parallel adapter card See also single ended signal filler card In some HP PB computers a removable plastic plate that is installed in HP PB YO slots when the slot is not in use FRU Field Replaceable Unit The lowest level of hardware supported for field replacement such as to effect repair hardware path The collection of hardware addresses that uniquely identify hardware elements such as adapter cards and peripheral devices to the computer system high density connector In reference to the adapter card s SCSI port a 50 conductor connector consisting of two rows of 25 contacts with adjacent contacts 1 27 mm 0 05 in apart See also low density connector host In this manual the computer in which the adapter card is installed 2 Glossary host adapter See adapter HP PB Hewlett Packard Precision Bus The data control and addressing signal lines for input output operation on Hewlett Packard PA RISC computer systems HP PB is the 32 bit system architected bus through which the CPU memory and input output adapter cards communicate
4. If you have problems with your card refer to this chapter for test procedures or general service information This manual is limited to installation of the adapter card only We assume that you have your computer system and peripheral manuals to complete the installation Table of Contents Chapter 1 Installing the HP 28642A 28655A Adapter 1 Prepare to Install the Adapter Card ie ake wie Se eae 1 3 Observe Antistatic Precautions eee ee ee eee ee 1 3 Verify Product Contents 2 2 ce ccc ce eee cera eene 1 3 Record Adapter Card Identification Information 220 e005 1 4 Gather Tools and Accessories Needed es ee eee ee 1 4 Slot Divider sss eene ea dame eed ead SO eee A Ae 1 5 SCSI Cables rs neen ete far a B EED EN EE rt 1 5 2 Shut Down the System and Switch Off the Computer 1 6 3 Check the Card s Hardware Configuration s eee 1 7 Set the Desired Parity Checking Capability 1 8 Set the SCSI Bus Address oasis va maren van Oh eee SEs Sees Bs 1 9 Verify that Resistor Packs are Properly Installed 1 10 4 Install and Connect the Card ce ee ee eee 1 11 Select an Appropriate Slot een eee ee ee ee 1 11 Record the Slot Number eene ee ee eee ee ee 1 13 Prepare the Slot For Use eee ee eee ee een 1 14 Removing Slot Covers ees eee eee ae 1 14 Rem
5. Attach the card cables Select an Appropriate Slot Before you install the SCSI parallel adapter into the host computer you should understand the following information for your particular computer model How to gain access to your computer s I O card slots You may need to remove various covers or panels to expose the slots If your computer s I O slots are not readily accessible refer to your computer installation or hardware reference manuals to gain access m Proper orientation of an I O card into the cardcage The HP PB connectors are designed to prevent improper connections installing the Adapter 1 11 a Authorized or recommended slots for the SCSI paralle adapter The SCSI parallel adapter is a standard HP PB card Typically it can be installed in any standard HP PB single high 3U slot However some systems may contain special slots that do not support this card or may contain particular slots that are reserved for this card The SCSI parallel adapter complies with HP PB specifications for a standard power card This is indicated on the card by an open circle symbol labeled on the card s faceplate as illustrated in figure 1 6 Check your computer installation or hardware configuration manuals for special SCSI parallel adapter slot requirements HP PB Standard Power Symbol Figure 1 6 Standard Power Symbol Location 1 12 Installing the Adapter Computer hardware limitations for I O cards i
6. cable requirements met which includes cable lengths inside each peripheral the SCSI parallel adapter s internal SCSI bus length is 0 1 meter However do not use device to device cables that are shorter than 0 5 meters Are you using HP cables HP cables are wired to minimize noise Do all devices on the SCSI If any device on the SCSI bus does not generate parity no bus have the same device on that bus may check for it A mismatch causes parity checking capability non recoverable hardware errors because parity is both expected and missing Note Only some very early SCSI devices do not generate parity Service Information 2 7 Table 2 1 Troubleshooting Checklist continued Are the SCSI bus terminators correctly installed Both ends of the SCSI bus require termination The terminator on the host adapter is installed at the factory An external terminator is supplied for terminating the last device on the bus Does any device require a special SCSI terminator Some external devices may have peculiar termination requirements The device manual should explain any special termination requirements and how to avoid problems Does any peripheral device have an internal SCSI terminator Excessive termination may cause damage to the transceivers of all the devices on the bus including the adapter card or may cause unreliable operation Check the device manuals to d
7. device that supplies termination power should be enabled to do so If at least two devices supply termination power locate them at each end of the SCSI bus u Connect the device end of the SCSI port cable 50 pin low density SCSI connector to the first SCSI device If applicable connect subsequent devices The connection method is often called daisy chaining Refer to your device manuals for proper connection to a SCSI bus s Use active SCSI terminators a Use HP supplied SCSI cables u Minimize the SCSI bus length However do not use device to device cables that are less than 0 5 meter a Do not exceed the maximum single ended SCSI bus length of 6 meters which includes the SCSI port cable and any internal device cabling The SCSI parallel adapter has an internal SCSI cable length of 0 1 meter a Do not exceed the maximum number of devices supported for your particular system Terminate the SCSI Bus Unless the SCSI bus is properly terminated the bus will not operate reliably Terminators provide matching impedance and bias the bus signal lines This product includes an external SCSI bus terminator assembly part number 1252 3920 to terminate the peripheral end of the SCSI bus The terminator assembly contains a 50 pin low density male connector Adapting connectors can be used to accommodate other types of SCSI connectors Consult HP for availability As illustrated in figure 1 11 install the terminator on the end o
8. newer versions Note The PROM firmware version is displayed during system boot and can also be determined from the scsipba diagnostic To remove these components proceed as follows 1 Remove the card from the host computer as described earlier in this chapter 2 Use a chip extractor or similar tool to gently pry and remove each component from its socket CAUTION Excessive prying and pressure can damage the component or its socket Use care during removal Service Information 2 11 To install replacement components proceed as follows 1 Identify the proper socket location for the replacement component 2 Note the half circle notch or identification mark located on one end of the component When installed the component must be oriented so that its notch or mark is in the same direction as a similar notch or mark on the socket 3 Ensure that the component s contact pins are aligned with the socket s receptacles You may need to adjust the pins bow them inward or outward for proper alignment 4 Gently press the component into place to properly seat the pins CAUTION If pressure is not uniformly applied the pins on one side or the other may buckle and collapse without making proper electrical contact Jf this happens remove the component straighten the pins and try again If damage was extensive you may need a new component Termination Power Fuse WARNING _ For continued protection replace only
9. port and a parallel communication device to the parallel port The parallel port is not supported for use on MPE XL systems The following steps are described below 1 Connect your single ended SCSI devices 2 Terminate the SCSI bus 3 Connect your parallel device if applicable 4 Reassemble your computer Connect Your Single Ended SCSI Device s When connecting SCSI devices follow these guidelines m Verify that the host system is shut down There should be no data transfer activity on the SCSI bus a Verify that power is off to the peripheral device before connecting it to the SCSI bus u Verify that your peripheral devices use single ended SCSI bus signals only s Check whether your device contains internal SCSI bus terminators or requires special terminators If so refer to your device manuals for instructions on how to prevent excessive or improper SCSI bus termination CAUTION Only the two ends of a SCSI bus should be terminated Excessive or improper termination may overload the SCSI port s termination power TERMPWR circuitry This may result in blowing the TERMPWR fuse on the adapter or damaging transceivers on any attached device including the adapter Refer to device manuals to ensure they operate properly on the SCSI bus installing the Adapter 1 19 a Set switches or jumpers on your device s as appropriate Be sure each SCSI device has a unique SCSI address s For optimum noise immunity any
10. the faceplate until you feel the card slide fully into place CAUTION The use of excessive pressure may damage the card and the backplane If you feel resistance check for obstructions and reverify that the connector pins are straight Ensure that the card is correctly engaged in the card guides If the problem persists get help 7 Once the card is fully seated in its slot use a screwdriver to engage and tighten the two retaining screws on the faceplate These screws secure the card to the cardcage Installing the Adapter 1 17 Attach the Card Cables Figure 1 10 shows a typical installation with both the SCSI port and parallel port cables attached the use of the parallel port is not supported for MPE XL systems CAUTION Do not connect serial cables for example RS 232 cables to the parallel port Connecting serial cables can damage the SCSI parallel adapter Note SCSI cables with high density squeeze latch or thumbscrew connectors can be attached to the SCSI port However cables with thumbscrew connectors are recommended for improved reliability The SCSI cable supplied with this product provides a thumbscrew connector Thumbscrews SCS Port Cable Parallel Port Cable not supported on MPE XL systems Figure 1 10 Cable Connections to SCSI and Parallel Ports 1 18 Installing the Adapter Connect Your Peripheral Device s You can connect SCSI devices single ended devices only to the SCSI
11. thereafter to equalize any static charge Service Information 2 9 Removal Replacement of the Card For card removal follow the procedures below 1 Before removing the card ensure that the operating system is shut down and that power to the host computer is off Consult your computer system manuals for proper shutdown procedures to avoid corruption or loss of data 2 Access the I O cardcage according to instructions in your system manuals 3 Disconnect the cables from the card 4 Unscrew the two retaining screws that secure the card to the cardcage 5 Simultaneously lift both extractor levers on the card This will disconnect the card from the HP PB backplane connectors 6 Slide the card out of its slot To install a replacement card follow the procedures described in chapter 1 2 10 Service Information Removal Replacement of Card Components Replaceable card components are socketed to facilitate their removal and replacement PROM and Termination SIPs CAUTION Observe antistatic precautions when handling these components When removed from the board these components should be placed in antistatic containers such as conductive box 1540 0929 with antistatic foam insert 9211 2794 Minimize touching the connector pins It may be necessary to remove Programmable Read Only Memory PROM devices and termination resistors for the following reasons The components may be faulty a PROMs must be replaced when upgrading to
12. with a fuse of the same type and rating If the termination power TERMPWR fuse blows the SCSI port will no longer supply termination power to the SCSI bus and the green TERMPWR LED will turn off 2 12 Service information Note An open fuse condition can be also be determined from the scsipba diagnostic If another device on the SCSI bus provides termination power the bus can continue to operate normally Before replacing the TERMPWR fuse identify the reason for the failure Check for sources of short circuits on the SCSI bus cables and connectors Check for proper mating of contact pins on the SCSI bus cables Be sure that power is off on the host computer and peripheral devices when connecting SCSI bus cables to prevent inadvertent shorting To remove and replace the fuse proceed as follows 1 Remove the card from the host computer as described previously in this chapter 2 As shown in figure 2 3 pull the fuse out of its socket It is usually a good idea to verify that the fuse is open by using a continuity tester 3 To install the replacement fuse carefully align the two contact pins with the socket holes Then simply press the fuse in The fuse has no polarity so the pins can go into either socket hole Wiggle tuse slightly while pulling It out Fuse Socket Figure 2 3 Replacing the TERMPWR Fuse Service Information 2 13 Reshipment Guidelines If any item of the product is to be returned to Hewlett Pac
13. 7 part number 1 3 2 3 removal replacement 2 10 Storing 1 3 version 1 4 antistatic precautions 1 3 2 9 attaching the cable 1 18 bus terminator 1 20 See also terminator index t c cable connecting to the card 1 18 parallel 1 3 1 23 2 4 part number 1 3 1 5 1 21 SCSI 1 3 1 18 2 4 SCSI bus length 1 20 1 21 troubleshooting 2 7 card version 1 4 checklist troubleshooting 2 7 components removing and replacing 2 11 replaceable 2 4 computer power during installation 1 6 during removal replacement 2 10 configuration card 1 7 hardware 1 7 operating system 1 27 system dependencies 1 13 troubleshooting 2 7 connecting peripheral devices 1 19 connecting the card 1 11 connectors 2 15 daisy chaining 1 20 date code 1 4 device adapter manager See drivers diagnostics 2 5 2 7 double high slot 1 5 1 11 1 15 drivers adapter card 1 27 2 Index electrical specifications 2 16 electromagnetic specifications 2 16 environmental specifications 2 16 exchange assembly part number 2 3 F field replaceable units See FRUs filler card 1 14 removing 1 15 FRUs 2 3 part numbers 2 4 fuse 2 4 removal replacement 2 12 TERMPWR LED 2 6 hardware address 1 13 configuration 1 7 HP Precision Bus See HP PB HP PB specifications 1 12 HP UX system 2 15 configuration 1 27 1 identification information 1 4 installing adapte
14. CSI device that cannot match the parity checking capability of other devices on the bus you must add a separate SCSI bus for that device An additional SCSI adapter card may be needed for this purpose As shown in figure 1 4 the factory setting is parity checking enabled that is with switch 4 in the open position The closed position will deactivate parity checking Parity Checking Default Enabled Switch 4 is Open SCS Bus Address Default 7 Switches 3 2 1 is Open Figure 1 4 Default Switch Settings 1 8 Installing the Adapter Set the SCSI Bus Address There may be up to eight devices which includes the SCSI adapter connected to a SCSI bus Each device must have a unique address from 0 to 7 The bus address determines the device s priority on the bus Seven is the highest priority and zero is the lowest priority Switches 3 2 and 1 are used to set the adapter s address on the SCSI bus In binary switch 3 represents the most significant digit When shipped from the factory the address is set to 7 switches 3 2 and 1 are each set to 1 that is in the open position as shown in figure 14 For most applications 7 is the best choice for the adapter s SCSI bus address Table 1 2 shows switch positions for other possible addresses Be sure all devices on the bus have a different address Table 1 2 SCSI Address Switch Positions SCSI Bus Address 7 Default 0
15. O packann HP 28642A HP PB SCSI HP 28655A HP PB SCSI Parallel O eackann HP 28642A HP PB SCSI HP 28655A HP PB SCS Parallel 5960 3126 E1091 Hewlett Packard Company 1991 All rights reserved Hewlett Packard Company makes no warranty of any kind with regard to this material including 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 for incidental or consequential damages in connection with the furnishing performance or use of This document contains proprietary information which is protected by copyright No part of this document may be photocopied reproduced or translated into another language without the prior written consent of Hewlett Packard The information contained in this document is subject to change without notice Print History Edition 1 October 1991 Safety Considerations The product and related documentation must be reviewed for familiarization with safety markings and instructions before installation and operation Safety Symbols A Instruction manual symbol 1f the product is marked with this symbol refer to the product manuals to protect the product against damage WARNING A WARNING denotes a hazard that can cause personal injury CAUTION A CAUTION denotes a hazard that can damage equipment Do not proceed beyond a WARNING or CAUTION notice until you have understood the hazardous c
16. Removal Replacement Instructions ee eere eee eene 2 9 Removal Replacement of the Card se enen 2 10 Removal Replacement of Card Components 2 2 6 eee eee 2 11 PROM and Termination SIPs 2 2 2 ce eee ee ete eee 2 11 Termination Power Fuse eee eee ee eee 2 12 Reshipment Guidelines 2 0 60 ee cee ee eee eee 2 14 Technical Specifications 1 ee ee eee eee eee 2 15 Glossary Index Installing the HP 28642A 28655A Adapter Installing the HP 28642A 28655A Adapter This chapter contains installation instructions for the HP 28642A 28655A HP PB SCSI Parallel adapter card Figure 1 1 illustrates a typical installation The instructions are organized into the eight primary steps listed below Each step is described in detail in this chapter If the adapter card has already been installed and configured at the factory you may proceed directly to step 5 1 Prepare to Install the Adapter Card 2 Shut Down the System and Switch Off the Computer 3 Check the Card s Hardware Configuration 4 Install and Connect the Card 5 Connect Your Peripheral Device s 6 Turn Power On to Peripherals Then to the Computer 7 Set Up the Operating System 8 Verify Operation SCSI Devices such as disk drives Terminator HP PA RISC Computer with HP PB Backplane SCSI Port Cable SCS1 Parallel Printer Parallel Port Cable port Adapter is not supported with MPE XL Figure 1 1 Typical Use of th
17. Verify that all cables are connected and securely fastened 2 Turn power on to your peripheral devices before your computer Refer to your peripheral and computer installation manuals for information on turning power on In general plug your power cords first into the load your peripheral or computer then into the power source such as the electrical wall outlet Then turn on your computer power switches as appropriate When the computer s power is switched on power is supplied to the SCSI parallel adapter through the HP PB backplane For operation of the light emitting diodes LEDs on the card refer to chapter 3 Service Information CAUTION After power is switched on termination power TERMPWR is supplied to the SCSI bus Do not switch power on or off any device connected to an active SCSI bus Similarly devices should not be added to or removed from an active SCSI bus Failure to comply may result in data corruption or loss or damage to hardware 1 26 Installing the Adapter 7 Set Up the Operating System Before you can use your devices the SCSI paralle adapter card and peripheral devices must be configured into the operating system Depending on your system this may or may not be performed automatically during the boot process Refer to your system administration manuals for current procedures HP UX Systems On HP UX systems refer to your HP UX Installing Peripherals Guide B2437 90005 and HP UX Syst
18. ata unit and based on the summation appends a parity bit The receiver logic sums the received data unit and based on its summation compares the parity bit The adapter card s SCSI port can have its parity checking ability enabled or disabled Precision Bus See HP PB SCSI Small Computer System Interface often pronounced skuzzy Refers to both SCSI 1 and SCSI 2 SCSI 1 Complies with the SCSI specification X3 131 1986 4 Glossary SCSI 2 Complies with the SCSI specification X3 131 1990 SCSI 2 provides extensions and further standardization of SCSI 1 SCSI address The octal representation of the unique address 0 to 7 assigned to each device on an SCSI bus For bus arbitration higher addresses have priority over lower addresses SCSI addresses are typically assigned during installation The host adapter is typically assigned 7 SCSI bus The collection of unbroken SCSI signal lines that interconnect SCSI devices SCSI ID SCSI identification The bit significant representation of the SCSI address referring to one of the bus signal lines DB 7 through 0 See also SCSI address self test A diagnostic test to check hardware components and circuitry slot divider An assembly used to convert a double high 6U HP PB I O slot into two single high 3U slots Also referred to as a two board adapter single ended signal Also referred to as unbalanced signal During electrical transmissi
19. d from the factory If a slot divider is already installed skip the steps below If a slot divider is not installed you must install one as follows 1 Insert the slot divider carefully into the empty double high 6U slot 2 Align the slot divider s alignment pin with the hole in the locator bracket on the backplane See figure 1 8 Locator Bracket Alignment Pin Retention Clip Alignment Hole Figure 1 8 Aligning Slot Divider For Installation Installing the Adapter 1 15 3 Press the slot divider until its retention clips clamp onto the locator bracket as illustrated in figure 1 9 Figure 1 9 Slot Divider Mated With Backplane Bracket 1 16 Installing the Adapter Insert the Card into the Slot To install the adapter into its slot proceed as follows 1 Inspect the 96 pin connector at the back of the slot on the backplane Ensure that there are no bent pins With both hands grasp the card by its edges or faceplate Do not touch electronic components or electrical traces Insert the card into the slot Be sure the card is properly aligned with the card guides on the slot divider and cardcage wall Ensure that the extractor levers are flush against the faceplate in other words not protruding out Slide the card all the way into the cardcage until it reaches the backplane connector Be sure that card components are not obstructed in any way Press firmly on the extractor levers or on
20. e SCSI Parallel Adapter 1 2 Installing the Adapter 1 Prepare to Install the Adapter Card Before installing the SCSI parallel adapter card perform the following 1 2 3 4 Observe antistatic precautions Verify product contents Record adapter card identification information Gather tools and accessories needed Observe Antistatic Precautions This product contains electronic components that can be damaged by static electricity To avoid damage follow these guidelines Store printed circuit assemblies in their conductive plastic bags until you are ready to install them If possible work in a static free area Handle printed circuit assemblies only by the edges Do not touch electronic components or electrical traces We strongly recommend that you use a grounding wrist strap that is connected to the metallic chassis of the host computer If you do not have a wrist strap touch the chassis before handling assemblies and frequently thereafter to equalize any static charge Verify Product Contents Unpack and identify all items supplied with the product SCSI parallel adapter card 28655 60001 External SCSI terminator 1252 3920 SCSI port cable 1 meter 5062 3383 Parallel port cable 2 meter 5180 0010 Installation and Service manual 5960 3126 Parallel port cable is not supplied with HP 28642A The parallel port is not supported on MPE XL systems installing the Adapter 1 3 Record Adapter Card Identification I
21. eld replacement of faulty units must be performed by authorized service personnel See figure 2 1 for FRUs associated with the adapter card Onboard SCSI termination SIPs Figure 2 1 Location of Board Component FRUs Exchange Assembly The adapter card assembly may be replaced under the HP board exchange program Assembly part numbers are listed below New adapter card assembly 28655 60001 Exchange adapter card assembly 28655 69001 Service Information 2 3 Board Components The following board components are available for replacement see figure 2 1 for location PROM location U52 28655 81001 Fuse termination power 2110 0517 Onboard SCSI terminator single in line packages SIPs 1810 0676 two installed Other FRUs Other FRUs associated with this product include the following SCSI card cable 1 meter 5062 3383 External SCSI bus terminator 1252 3920 active single ended Loopback hood 5061 6565 single ended Parallel cable 2 meters 5180 0010 same as HP 92284A Not applicable for the HP 28642A product on MPE XL systems MPE XL systems do not support the use of the parallel port 2 4 Service Information Troubleshooting Tools Troubleshooting tools are used to identify faulty FRUs For this product the following tools are described below w Self Test failure LED sce figure 2 2 ws TERMPWR LED see figure 2 2 a scsipba and centpba diagnostics w Troubleshooting checklist CAUTION In some
22. em Administration Tasks Guide B2437 90006 If you manually generate a new kernel you may need the names of the software drivers for the SCSI parallel adapter card The driver names are e SCSI module scsi m Parallel module cent0 MPE XL Systems On MPE XL systems refer to your System Startup Configuration and Shutdown Reference Manual 32650 90042 On MPE XL systems you should not need the name of the SCSI module driver Installing the Adapter 1 27 8 Verify Operation To verify card operation observe the light indicators a The yellow self test LED should be off m The green termination power LED should be on In addition you can check for proper operation of each port by running one of your application programs that writes to or reads from your peripheral device s If proper operation cannot be verified refer to chapter 2 Service Information and to your system troubleshooting manuals If operation continues to fail call your Hewlett Packard Sales and Support Office 1 28 Installing the Adapter Service Information Service Information This chapter provides the following service and reference information u Field Replaceable Units Troubleshooting Tools a Removal Replacement Instructions u Reshipment Guidelines u Technical Specifications 2 2 Service Information Field Replaceable Units Field replaceable units FRUs are assemblies or components that are authorized for field replacement Fi
23. etermine whether they have internal terminators and how to avoid overloading the bus Are all devices that can supply termination power configured to do so For optimum noise immunity we recommend that devices be configured to supply TERMPWR when possible If at least two devices supply TERMPWR locate them at each end of the SCSI bus Additional devices that supply TERMPWR can be evenly distributed along the bus 2 8 Service Information Removal Replacement Instructions This section describes removal and replacement instructions for the following items a The SCSI parallel adapter a SCSl parallel adapter components WARNING Untess otherwise noted in your system manuals removal of the Interface card should only be done with power removed from the host computer Failure to comply may result in an electrical shock hazard or in damage to the hardware CAUTION The card contains electronic components that can be damaged by static electricity To avoid damage follow these guidelines Store printed circuit assemblies in their conductive plastic bags If possible work in a static free area Handle printed circuit assemblies only by the edges Do not touch electronic components or electrical traces We strongly recommend that you use a grounding wrist strap that is connected to the metallic chassis of the host computer If you do not have a wrist strap touch the chassis before handling assemblies and frequently
24. f any The HP UX and MPE XL operating systems support the use of this card However the particular computer model into which this card is installed may require special configuration rules due to power supply or slot limitations This may affect the number or combination of interface cards authorized for use To prevent card or system damage be sure to consult your system installation and configuration manuals for authorized I O card cage configurations w System performance Implications if any All HP PB I O cards are guaranteed to be able to acquire the HP PB backplane for communication with the central processing unit CPU or memory However the I O card in the highest numbered slot may acquire the bus more frequently That is if all cards arbitrate for the bus continuously the card in the highest slot will acquire it about 50 of the time The SCSI parallel adapter is a high performance card In general if your applications require high performance through this card and you are not concerned about the performance of other I O cards in your system then select the highest numbered slot Otherwise any other allowed slot would be suitable You should check your system installation or configuration manuals for any recommended configurations Record the Slot Number The HP PB slot number is used to calculate the card s hardware address during system configuration The slot number is labled on the computer and may be an even or odd di
25. f the SCSI bus opposite the SCSI parallel adapter 1 20 Installing the Adapter CAUTION Only the two ends of a SCSI bus should be terminated Excessive or improper termination may overload the termination power circuitry on the SCSI port This may result in blowing the TERMPWR fuse on the SCSI parallel adapter or may damage transceivers on any attached device including the adapter Refer to device manuals for proper device operation on the SCSI bus Host Terminator Resistor Computer Packs on Adapter Adapter SCSI Bus Cables Install External Terminator Figure 1 11 Install External Terminator on Last Device Installing the Adapter 1 21 A SCSI Cable Length Example Table 1 3 and figure 1 12 demonstrate how to calculate SCSI bus cable lengths for a typical installation The SCSI 0 5 m cable HP 92222A used in the example is available through your HP Sales and Support Office Other lengths are also available Table 1 3 Example of SCSI Cable Length Calculation Cable Cable Length scsrhou adapter oases 10m orm ua Hracie mrozma osm ozm tam HP devie 2 Poza osm oem 27m IP device 4 None osm som Terminator HP Device 4 HP Device 3 HP Device 2 SCSI Port HP Device 1 Cable Figure 1 12 SCSI Bus Example 1 22 Installing the Adapter Connect Your Parallel Device if Applicable Output only parallel devices such as common printers can be connected
26. git Hexadecimal notation may be used If the slot number will be difficult to obtain once the computer is reassembled record the number now installing the Adapter 1 13 Prepare the Slot For Use To prepare a slot you must first remove the metal slot cover Then if a plastic filler card is installed in the slot remove it Retain slot covers and filler cards they should be installed when slots are not in use If a slot divider is not installed you must install one Figure 1 7 shows the applicable hardware Removing Slot Covers Using a Torx T 10 or 3 16 inch flat blade screwdriver unscrew the slot cover retaining screws and remove the slot cover for the selected slot Siot Divider HP PB Backplane Filler Card Slot Cover Figure 1 7 Slot Cover Filler Card and Slot Divider 1 14 Installing the Adapter Removing Filler Cards A plastic filler card is normally installed when a slot is not in use In some systems the filler card helps to channel airflow through the cardcage In these systems you must remove the filler card before you can install the SCSI parallel adapter Installing a Slot Divider A slot divider is an assembly that converts a double high 6U slot into two single high 3U slots It provides supporting card guides for single high adapters and filler cards It also provides retaining screw holes for securing slot covers and adapters Slot dividers are normally pre installed when shippe
27. is green and indicates that the card is supplying termination power to the SCSI bus During proper operation this LED should be on l If this LED is off there may be a problem with the TERMPWR circuitry Possible faults include a blown TERMPWR fuse a faulty card or a faulty cable connection Instructions on how to replace the TERMPWR fuse is described later in this chapter 2 6 Service information SCSIPBA and CENTPBA Diagnostics Standard diagnostics scsipba and centpba are available for use by authorized service personnel For more information on these diagnostics refer to the system troubleshooting and diagnostic manuals for your particular system Troubleshooting Checklist Table 2 1 provides a troubleshooting checklist that can be used to help identify faults Table 2 1 Troubleshooting Checklist Check list item Explanation Are all connectors SCSI Marginal connections can cause improper operation and parallel properly and Ensure that the adapter and retaining screws are securely fastened completely engaged Check all cable connections Are all the external devices Run their self tests and verify their settings operating correctly Does each device on the Usually there will be a set of switches on the device SCSI bus have a unique Conflicting addresses may cause intermittent or complete address 0 through 7 failures in transmission Are SCSI bus length and Minimize the SCSI bus length Do not exceed 6 meters
28. kard for any reason contact your HP Sales and Support Office to coordinate the return When returning any item attach a tag that identifies the owner and indicates the reason for shipment Include the part number of the item and date code if applicable Pack the item in the original factory packaging material if available or a suitable substitute Provide antistatic protection to applicable components or assemblies 2 14 Service Information Technical Specifications Table 2 2 SCSi Parallel Adapter Technical Specifications HP 9000 Series 600 800 HP PB computers HP UX Systems HP 3000 Series 900 HP PB computers MPE XL supported SCSI Asynchronous 3 0 Mbytes second maximum Parallel Asynchronous 330 Kbytes second Self test failure Under host computer system Status LEDs yellow control Termination power Turns off if TERMPWR fuse General green opens an any internal lengths in all devices Service Information 2 15 Table 2 2 SCSI Parailel Adapter Technical Specifications continued Current Typical Power Typical evi oa vA 24 om 94 in Width 13 cm 5 1 in Physical 0 26 kg 9 02 PC to 55 C Operati perat Relative 15 95 40 C Humidity noncondensating en 40 C to 70 C Non Relative 90 65 C Operating Humidity ee 4 6 km 15 000 ft When operating under authorized conditions complies with FTZ 1046 VDE Level B VCCI Class 1 CISPR 22 C
29. lass A and FCC Class A for radiated and conducted emissions Environmental Electro magnetic 2 16 Service Information Glossary adapter adapter card An add on computer interface card and circuitry that provides the physical connection and data translation between the host computer s I O bus and external devices or networks ANSI American National Standards Institute backplane For an I O bus the computer s circuitry and connectors to which adapter cards connect The SCSI parallel adapter card is supported on HP Precision Architecture RISC computers that use the HP PB backplane See also HP PB balanced signal See differential signal bus The electrical hardware and circuitry for transferring data address and control signals between hardware modules or devices configuration The arrangement of a computer system or subsystem and its elements to allow proper operation or to implement specific functionality The term configuration may refer to both hardware and software console The ASCII terminal or personal computer emulating an ASCII terminal that is connected to the host computer for system administration such as for configuration monitoring and troubleshooting Glossary 1 device In this manual refers to the peripheral units that are attached to the SCSI parallel adapter card device adapter See adapter differential signal Also referred to as balanced signal
30. le high slots using a slot divider Slot divider installation is described later in this chapter This product does not include a slot divider Slot dividers are normally preinstalled in the computer and it is unlikely that you will need one However if one is necessary you can order it through the nearest HP Sales and Support Office SCSI Cables SCSI cables may be purchased separately Table 1 1 lists a variety of Hewlett Packard cables that can be used with this product depending on the devices supported with your system For the most recent information refer to your system configuration guides or consult the nearest HP Sales and Support Office Table 1 1 SCSI Cables SCSI Cable Cable Description Purpose Product Numbers Adapter card K2296 Kk 50 pin high density male connector with K2297 thumbscrews to host adapter and 50 pin low density male connector with bail lock Peripheral to 92222A 50 pin low density male connectors with Peripheral 92222B 4 bail lock on both ends 92222C Extension 92222D 50 pin low density female to male bail lock A connectors installing the Adapter 1 5 2 Shut Down the System and Switch Off the Computer 1 Before installing the card ensure that the operating system is shut down Consult your computer system manuals for proper shutdown procedures to avoid corruption or loss of data 2 Ensure that power to the host computer is off Unplug the power cord from the power so
31. nformation Should your card require service its part number and date code may be needed by HP service personnel This information is provided on a labeled sticker on the card An example of a labeled sticker is illustrated in figure 1 2 28655 6xxxx USA YYYY A XXXX Figure 1 2 identification Sticker Example a The number in the upper left 28655 6 0xx is the adapter card assembly part number a The 5 digit alphanumeric string A xxxx is the card version and date code a Other numbers such as YYYY are for factory use only Record the card s part number and date code for future reference Once the card is installed this information will be more difficult to obtain Gather Tools and Accessories Needed Check the hardware installation manuals for your particular computer model for any special tools or accessories needed to access the I O card cage The following items may be needed for card installation Screwdriver Torx T 10 or 3 16 inch flat blade a Slot divider 5062 3336 described below m SCSI cables described below 1 4 Installing the Adapter Note You should have all of your system and peripheral device manuals available for reference There may be special system or device dependent requirements that are not noted here Slot Divider Since this adapter card is a single high card it requires a single high slot Eurocard standard slot size 3U A double high 6U slot can be converted into two sing
32. on and reception signals are detemined by the voltage of a single line relative to a common ground Because of electrical noise caused by ground loops at even short distances common mode noise single ended SCSI signals are limited to 6 meters maximum and lower data rates A single ended SCSI bus is incompatible with a differential SCSI bus Therefore use only single ended SCSI devices with the SCSI parallel adapter card See also differential signal Glossary 5 system administrator The person who manages or controls the configuration and operation of a computer system terminator An assembly that contains a resistive network to terminate the peripheral end of a SCSI bus The peripheral end of the SCSI bus may not need a terminator if the last peripheral device on the bus already contains SCSI termination resistors termination To complete the bus circuitry at each end of a SCSI bus the electrical lines at each end only must be terminated with a resistive network The HP PB SCSI parallel adapter contains termination resistor packs on the card and must be located at one end of the SCSI bus See also terminator two board adapter See slot divider unbalanced signal See single ended signal 6 Glossary Index A accessories 1 4 adapter configuration 1 7 connecting 1 11 exchange assembly 2 3 hardware address 1 13 HP PB specifications 1 12 HP UX drivers 1 27 inserting into the computer 1 11 1 1
33. onditions and have taken appropriate steps Grounding The computer in which this product is installed is a safety class I product and has a protective earthing terminal There must be an uninterruptible safety earth ground from the main power source to the product s input wiring terminals power cord or supplied power cord set Whenever it is likely that the protection has been impaired disconnect the power cord until the ground has been restored Servicing Any servicing adjustment maintenance or repair must be performed only by authorized service trained personnel Hewlett Packard Company Roseville Networks Division Roseville CA 95678 Installation and Service HP 28642A HP PB SCSI HP 28655A HP PB SCSI Parallel HP 28642A and HP 28655A at a Glance A Extractor lever B Retaining captive screw C Self Test Fail LED yellow normally off D SCSI port 50 pin high density connector single ended signals E SCSI bus termination resistors single in line packages SIPs F PROM socket location U52 G HP PB backplane connector H Switch pack of four switches SW1 I Termination power fuse J Term Power LED green normally on K Parallel port not supported on MPE XL systems Product Description The HP 28642A HP 28655A HP PB adapter is a computer interface card for use in Hewlett Packard computers that use the HP PB HP Precision Bus backplane The HP 28642A product is f
34. or MPE XL systems The HP 28655A product is for HP UX systems The adapter card provides a SCSI port Small Computer System Interface for connecting up to seven SCSI peripherals In addition the adapter card provides a standard HP parallel port for connecting an output only device The parallel port is not supported for use on MPE XL systems Hardware Supplied HP 28642A SCSI parallel adapter card 28655 60001 SCSI bus external terminator 1252 3920 SCSI port cable 1 meter 5062 3383 This Installation and Service Manual 5960 3126 Note The parallel port is not supported for use on MPE XL systems HP 28655A SCSI parallel adapter card 28655 60001 SCSI bus external terminator 1252 3920 SCSI port cable 1 meter 5062 3383 Parallel port cable 2 meter 5180 0010 This Installation and Service Manual 5960 3126 Tools and Accessories Not Supplied m Screwdriver Torx T 10 or 3 16 inch flat blade a HP PB slot divider 5062 3336 a Loopback hood single ended SCSI signals 5061 6565 In This Book This manual contains installation and service information for the a HP 28642A HP PB SCSI adapter for MPE XL systems and a HP 28655A HP PB SCSI Parallel adapter for HP UX systems This manual is organized as follows Chapter 1 provides installation instructions It describes in detail the steps that you should follow to install this product Chapter 2 contains service information as well as technical specifications
35. oving Filler Cards lt a arn vn heee Wee hate ER 1 15 Installing a Slot Divider 2 2 20 eee ee eee ee 1 15 Insert the Card into the Slot 2 2 ccc eene eee eee 1 17 Attach the Card Cables o 3 arten acs os PEGS a ated ee a 1 18 5 Connect Your Peripheral Device s eee te eeen ee 1 19 Connect Your Single Ended SCSI Device s 1 19 Terminate the SCSI Bus esc sro sco ee ers ae en wR ele ee we 4 1 20 A SCSI Cable Length Example 1 2 0 0 2 ce eee eee eee 1 21 Connect Your Parallel Device if Applicable 1 23 Reassemble Your Computer 00 cece eee ee twee 1 23 6 Turn Power On to Peripherals Then to the Computer 1 26 7 Set Up the Operating System 2 2 ee ee 1 27 HP UX Systems oo ee ee oee eene eere es dee dend 1 27 MPE XL Systems sc on aon ea e Ge de ee ese 1 27 8 Verify Operation ae sacar ew bee en reas Cre re eee ee 1 28 Chapter 2 Service Information Field Replaceable Units Sard Ea ES ween 23 Exchange Assembly 0 2 2 cee tee eee eee 2 3 Board Components 2 eeen eee ene eee 2 4 Other FRUs e see eee eee ee eee ee 24 Troubleshooting Tools neer dla enh ete ee sene sad ao 2 5 Self Test Failure LED e ee eee eee 26 TERMPWR LED ns oen neer nn en eR RE 2 6 SCSIPBA and CENTPBA Diagnostics ese eee ee 2 7 Troubleshooting Checklist EEE KE Re 2 7
36. r card 1 11 resistor packs 1 10 Index 3 L LEDs 2 6 troubleshooting 2 5 verifying card operation 1 28 light emitting diodes See LEDs loopback hood 2 4 MPE XL system 2 15 configuration 1 27 o operating system 1 13 configuration 1 27 supported 2 15 p parallel cable 1 3 1 18 2 4 connecting devices 1 23 parity checking 1 7 1 8 part number adapter card components 2 4 exchange assembly 2 3 product contents 1 3 performance 2 15 system considerations 1 13 peripheral devices connecting 1 19 physical specifications 2 16 4 Index power during installation removal 1 6 1 19 1 26 2 10 symbol for standard power slot 1 12 product contents 1 3 PROMs removal replacement 2 11 removal replacement instructions 2 9 adapter card 2 10 board components 2 11 TERMPWR fuse 2 12 replaceable board components 2 4 reshipment 2 14 resistor pack 1 10 S SCSI address 1 7 1 9 bus length requirements 1 20 1 21 cable 1 3 1 5 1 18 2 4 hardware configuration 1 7 peripheral devices 1 19 single ended devices 1 19 terminators 1 20 troubleshooting 2 7 self test failure LED 2 6 shut down See system shut down single ended SCSI signals 1 19 single high slot 1 5 1 11 1 15 slot choosing a slot 1 11 cover 1 14 number 1 13 Index 5 slot divider 1 4 1 5 installing 1 15 specifications 2 14 storing adapter cards 1 3 s
37. systems the light emitting diodes LEDs on the card may not be visible without exposing the I O cardcage Unless otherwise permitted operating the computer system with the I O cardcage exposed should be performed by authorized service personnel only Self Test Failure LED Yellow TERMPWR LED Green Figure 2 2 Location of LEDs Service Information 2 5 Self Test Failure LED The Self Test Failure LED is yellow and will indicate card test failures when used by the host system Card self test code contained in PROM on the card is uploaded to the host and run under host control Note The use of the card s self test code is system dependent In some systems for example the self test must be invoked by the operator In other systems it may be run automatically by the system but only if a boot failure occurs In addition the use of the Self Test Failure LED is system dependent In some cases the LED will operate as described here In other cases system messages will be displayed on the system console in place of LED operation Refer to your system reference manuals When card self test is executed the LED will light and subsequently turn off if self test passes When used by the system the card self test has failed if a the LED never turns on or u the LED turns on and remains on If card self test fails check the TERMPWR fuse Otherwise replace the card TERMPWR LED The termination power TERMPWR LED
38. to the parallel port Figure 1 13 and table 1 4 show the signals definitions of the parallel port connector Note For MPE XL systems do not use the parallel port The parallel port is not supported for use on MPE XL systems Proceed directly to step 6 Turn Power On to Peripherals Then to the Computer The parallel port cable contains a 25 pin connector for connecting to the parallel port and a 36 pin connector for the peripheral device Figure 1 14 shows the parallel port cable and wiring diagram CAUTION For reliable operation do not use a parallel port cable that is longer than two meters Reassemble your computer Unless there are other adapter cards to install reassemble your computer Be sure to reinstall protective panels or covers Installing the Adapter 1 23 Pin 1 Pin 14 oooooooo0ooooo 0 Pin 13 Pin 25 Figure 1 13 Parallel Port Pins Table 1 4 Signal Pin Assignments nStrobe nAutoFd Datal nFault Data2 nReset Data3 nSelectIn Data4 Ground Data5 Ground Data6 Ground Data7 Ground Data8 Ground nAck no connect Busy Ground PError Ground Select 1 2 3 4 5 6 7 8 9 10 11 12 13 1 24 Installing the Adapter 36 Pin Connector Peripheral End EET T ae LL WAZ HEER 25 Pin Connector Host End Figure 1 14 Parallel Cable Wiring Diagram installing the Adapter 1 25 Turn Power On to Peripherals Then to the Computer Before turning power on follow these steps 1
39. urce WARNING Unless otherwise noted in your computer system manuals failure to properly shut down the system and remove power may create a personnel hazard or may result in hardware damage or data corruption 1 6 Installing the Adapter 3 Check the Card s Hardware Configuration Hardware settings for the SCSI parallel adapter apply to the SCSI port only There are no hardware settings for the parallel port Figure 1 3 shows the applicable hardware To check the card s hardware perform the following 1 Set the desired parity checking capability 2 Set the SCSI bus address 3 Verify that resistor packs are properly installed The SCSI parallel adapter contains switches for setting the parity checking capability and the SCSI bus address of the card The default switch settings are all switches open resulting in B parity checking is enabled and SCSI bus address is 7 In addition the card contains resistor packs for terminating one end of the SCSI bus Termination Resistor Packs Figure 1 3 Switches and Termination Resistors installing the Adapter 1 7 Set the Desired Parity Checking Capability All devices on a SCSI bus must have the same parity checking capability If any device on the SCSI bus does not generate parity then all devices on the bus including the adapter must not check parity Although parity checking is selectable the adapter always generates parity Note If there is a S
40. witch default settings 1 8 location 1 7 symbol standard power card 1 12 system performance considerations 1 13 system shut down during installation removal 1 6 1 19 2 10 T technical specifications 2 14 termination power See TERMPWR termination resistors 1 7 2 4 terminator 1 3 1 20 2 4 troubleshooting 2 8 TERMPWR fuse 2 6 2 12 LED 2 6 precautions 1 19 troubleshooting 2 8 tools and accessories 1 4 troubleshooting 2 5 troubleshooting 2 5 checklist 2 7 two board adapter See filler card Vv verifying operation 1 28 6 Index Kl packarn Reorder No or an eem Recycled Paper 5960 3126
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