HP 28642A HP-PB SCSI HP 28655A HP-PB SCSI/ Parallel
HP HP 5960-3126 El091
@Hewlett-Packard Company, 1991. AI1 rights rcservcd, Hewlett-hckard CompanymakesM wsmmty of any kind with regard to this material,btcb~dittg.but not Ihttited lo. the implied warrantiesof merchantability and iitncsr for a panicular purpose. Hewlett-Packardshall My be liable for ertccs containedhe-reinor for incidental or consequentialdamagesiu connectionwith thefumishing, performan~. or useof thismamiai. This documentcowins proprietary infommticm,which is protectedby copyright.
Installation and S&vice HP28642A HP-PB SCSI HP 28655A HP-PB SCSI/Parallel
HP 28642A and HP 28655A at a Glance Extractor lever. B - Retaining (captive) screw. C - Self-Test Fail LED (yellow), normally off. D - SCSI port, SO-pinhigh-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 2S642A/HP2S655AHP-PB adapter is a computer interface card for use in HewIett-Packard computers that use the HP-PB (HP Precision Bus) backplane. The HP 2S642Aproduct is for MPE XL systems. The HP 2S655Aproduct is for HP-UX systems. The adapter card provides a SCSI port (Small Computer SystemInterface) for connecting up to sevenSCSI peripherals. In addition, the adapter card provides a standard HP parallel port for connecting an output-only device.
In This Book This manual contains installation and service information for the: n HP 28642A HP-PB SCSI adapter for MPE XL systems,and I HP 28655A HP-PI.3SCSI/Parallel adapter for HP-UX systems. Thii 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.
Table of Contents Chapter 1. Installing the HP 2s642Al28655AAdapter 1, Prepare to Install the Adapter Card ......................... Observe Antistatic Precautions .......................... Verify Product Contents ............................. Record Adapter Card Identification Information ............... Gather Tools and Accessories Needed ..................... Slot Divider ................................... SCSI Cables ................................... 2.
Chapter 2. Service Information Field Replaceable Units ................................. Exchange Assembly ................................ Board Components ................................ Other FRUs .................................... Troubleshooting Tools .................................. Self-Test Failure LED ............................... TERMPWR LED ................................. SCSIPBA and CENTPBA Diagnostics ..................... Troubleshooting Checklist ............................
1 Installing the HP 28642A/28655A Adapter
lnstalllng the HP 28642A/28655A Adapter This chapter contains installation instructions for the HP 28642A/28655AHP-PB SCSI/Parallel adapter card. Figure l-l illustrates a typical installation, The instructions are organized into the eight primary stepslisted 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. 2. 3. 4. 5. 6. 7. 8. Prepare to Install the Adapter Card.
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 accessoriesneeded. Observe Antlstatic Precautions Thii product contains electronic components that can be damagedby static electricity.
Record Adapter Card Identification Information Should your card require service, its part number and date code may be neededby 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. Figure 1-2. Identification Sticker Example n The number in the upper left (28655-6xx~cx) is the adapter card assemblypart number. l The 5-digit alphanumeric string (A-m) is the card version and date code.
Note You should have all of your systemand peripheral device manuals available for refirence. There may be special systemor 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 single-high slots using a slot divider. Slot divider installation is described later in this chapter. This product does not include a slot divider.
2. Shut Down the System and SwZtch Off the Computer 1. Before installing the card, ensure that the operating systemis shut down. Consult your computer systemmanuals 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 source.
3. Check the Card’s Hardware Configuration Hardware settings for the SCSI/parallel adapter apply to the SCSIport only. There are no hardware settings for the parallel port. Figure 1-3showsthe 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.
Set the Desired Parity-Checking CapabUity AU devices on a SCSI bus must have the sameparity-checking capability. If anydevice 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 SCSI device that cannot match the parity-checking capability of other devices on the bus, you must add a separateSCSI bus for that device.
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 addressdetermines the device’s priority on the bus. Sevenis 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.
Verify that Resistor Packs are Properly Installed A SCSI bus has two ends betweenwhich SCSLdevices are attached. Each end of a SCSI bus must be terminated with a resiitor 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 SCSIport is supported for use only on the end of a SCSI bus. The two resistor packs must be installed.
4. Install and Connect the Card The HP-PB cardcage accommodatestwo sixes 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 SCWparallel adapter into the host computer, read the steps described below: 1.
m Authorized or recommendedslots for the SCSI/parallel adapter. - The SCSI/parallel adapter is a standard HP-PB card. Typically, it can be installed in any stamiard HP-PB single-high (3U) slot. However, somesystems may contain special slots that do not support this card, or may contain particular slots that are reserved for thii card. - The SCSI/parallel adapter complies with HP-PB specifications for a standard-power card.
n Computer hardware limitations for l/O cards, if any. The HP-UX and MPE XL operating systemssupport 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 systemdamage,be sure to consult your systeminstallation and configuration manuals for authorized I/O card cageconfigurations.
Prepare the Slot For Use To prepare a slot, you must first remove the metal slot cover. Then, if a plastic frl!er 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 l-7 shows the applicable hardware. Removing Slot Covers Using a Torx T-10 or 3/164nch flat-blade screwdriver, unscrew the slot cover retaining screws and remove the slot cover for the selected slot.
Removing Filler Cards A plastic “filIer” card is normally installed when a slot is not in use. In somesystems,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 assemblythat converts a double-high (6U) slot into two single-high (3U) slots. It provides supporting card guides for single-high adapters and filler cards.
3. Pressthe slot divider until its retention clips clamp onto the locator bracket as illustrated in figure 1-9. Figure 1-9.
Insert the Card into the Slot To install the adapter into its slot, proceed as follows: 1. Inspect the %-pin connector at the back of the slot on the backplane. Ensure that there are no bent pins. 2. With both hands,grasp the card by its edgesor faceplate. Do not touch electronic components or electrical traces. 3. Insert the card into the slot. Be sure the card is properly aligned with the card guides on the slot divider and cardcage wall. 4.
Attach the Card Cables Figure l-10 showsa 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-232cables) to the parallel port. Connecting serial cables can damagethe SCSI/parallel adapter. Note SCSI cableswith high density squeeze-latch or thumbscrewconnectors can be attached to the SCSI port.
Connect Your Peripheral Device(s) You can connect SCSI devices (single-ended devicesonly) to the SCSI port, and a parallel communication device to the parallel port. (The parallel port is not supported for use on MPE XL systems.) The following stepsare describedbelow: 1. Connect your single-ended SCSI devices. 2. Terminate the SCSI bus. 3. Connect your parallel device (ii applicable). 4. Reassemble your computer.
Set switches or jumpers on your device(s) as appropriate. Be sure each SCSI device has a unique SCSI address. For optimum noise immunity, any device that supplies termination power should be enabled to do so. If at least two devices supply termination power, Locatethem at each end of the SCSI bus. Connect the device end of the SCSI port cable (50-pin, low-density SCSI connector) to the first SCSI device. If applicable, connect subsequentdevices. The connection method is often called “daisy-chaining”.
CAUTION Only the two ends of a SCSI bus should be terminated. Excessiveor 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 damagetransceivers on any attached device (including the adapter). Refer to device manuals for proper device operation on the SCSIbus. Terminator Resist0 Install External Termlnator Figure l-l 1.
A SCSI Cable Length Example Table l-3 and figure 1-12demonstrate how to calculate SCSIbus 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 SCSl Cable Length Calculation Cable to next device HP Device #4 HPDevice13 HP Device #2 Figure 1-12.
Connect Your Parallel Device, If Applicable Output-only parallel devices,such as common printers, can be connected to the parallel port. Figure l-13 and table l-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 useon MPE XL systems. Proceed directly to step 6, “Turn Power On to Peripherals, Then to the Computer.
Pin 1 Pin 14 Pin 13 Pin 25 Figure 1-13. Parallel Port Pins Table 1-4.
II Pin25 ::0. Pin 36 ;. % Fin 1 Pin 1 25Pin Connector, Host End B-Pin Connector, Peripheral End Figure 1-14.
Turn Power On to Peripherals, Then to the Computer Before turning power on, follow these steps: 1. Verify that a11cables 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).
7. Set Up the Operating System Before you can use your devices, the SCSI/parallel 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-LX Installing Pefipherals Guide, B2437-90005,and HP-UXSystemAdministration TasksGuide, B2437-90006.
8. Verify Operation To verify card operation, observe the light indicators: n The yellow self-test LED should be off. n The green termination power LED should be on. In addition, you can check for proper operation of eachport 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.
2 Service Information
Service Information This chapter provides the following service and reference information: m Field Replaceable Units 8 Troubleshooting Tools H Removal/Replacement Instructions n Reshipment Guidelines n Technical Specifications 2-2 Service Information
Field Replaceable Units Field replaceable units (F’FWs) are assembliesor componentsthat are authorized for field replacement. Field replacement of faulty units must be performed by authorized service personnel. See figure 2-l for FRUs associatedwith the adapter card. TERMPWRFuse Flgure 2-1. Location of Board Component FRUs Exchange Assembly The adapter card assemblymay be replaced under the HP board exchangeprogram.
Board Components The foIIowing board components are available for replacement (see figure 2-l 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 PRUs associatedwith this product include the following: SCSI card cable, 1 meter: External SCSI bus terminator: Loopback hood: Parallel cable,* 2 meters: 5062-3383 12523920 (active, single-ended) 5061-6565(single-ended) 51804010 (same
Troubleshooting Tools Troubleshooting tools are used to identify faulty FRUs. For this product, the following tools are described below B Self-Test failure LED (see figure 2-2) n TERMPWR LED (see figure 2-2) 8 scsipba and centpba diagnostics H Troubleshooting checklist CAUTION In some systems,the light emitting diodes (LEDs) on the card may not be visible without exposing the I/O cardcage.
Self-Test Failure LED The Self-Test Failure LED is yellow and will indicate card test failures whenusedby fhe 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 systemdependent. 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.
SCSIPBA and CENTPBA Diagnostics Standard diagnostics, scsipba andcentpba, are available for use by authorized service personnel. For more information on these diagnostics, refer to the systemtroubleshooting and diagnostic manuals for your particular system. Troubleshooting Checklist Table 2-l provides a troubleshooting checklist that can be used to help identify faults. Table 2-l.
Table 2-I. 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.
Removal/Replacement Instructions This section describes removal and replacement instructions for the following items: l The SCSI/parallel adapter n SCSI/parallel adapter components WARNING Unless 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.
Removal/Replacement of the Card For card removal, follow the procedures below: 1. Before removing the card, ensure that the operating systemis shut down and that power to the host computer is off. Consult your computer systemmanuals for proper shutdown procedures to avoid corruption or loss of data. 2. Access the f/O cardcageaccording to instructions in your systemmanuals. 3. Disconnect the cablesfrom the card. 4. Unscrew the two retaining screwsthat secure the card to the cardcage. 5.
Removal/Replacement of Card Components Replaceable card components are socketed to facilitate their removal and replacement. PROM and Termlnation SIPS CAUTION Observe antistatic precautions when handling these components. When removed from the board, these components should be placed in antistatic containers (such asconductive box 15404929 with antistatic foam insert 92112794). Minimize touching the connector pins.
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 samedirection as a similar notch or mark on the socket. 3. Ensure that the component’s contact pins are aligned with the socket’s receptacles.
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 sonrces of short circuits on the SCSI bus cables and connectors. Check for proper mating of contact pins on the SCSI bus cables.
Reshipment Guidelines If any item of the product is to be returned to Hewlett-Packard for any reason,contact your HP Safesand 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.
Technical Specifications Table 2-2 SCSI/Parallel Adapter Technical Specifications Supported Systems HP 9bOOSeries 600/800HP-PB computers (HP-UX); I HP 3000 Series 900 HP-PB computers (MPE XL).
Table 2-2. SCSI/Parallel Adapter Technical Specifications (continued) C IElectrical Voltage Current (Typical) +5 Vdc 0.75 A 3.75w + 12 Vdc OA ow -12 Vdc OA ow IPhysical Length 24 cm (9.4 in) Width 13cm (5.1 in) Thickness 3.1 cm (1.2 in) Weight 0.26kg (9 oz) Operating IEnvironmental NonOperating Eiectromagnetic 2-16 Service Information Power ~tcal) Temperature 0°C to 55°C Relative Humidity 1595% @ 40°C (noncondensating) Altitude 4.
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 usethe HP-PB backplane. Seealso, HP-PB.
device In this manual, refers to the peripheral units that are attached to the SCSI/parallel adapter card. device adapter Seeadapter. differential signal Also referred to as “balanced signal”. During electrical transmissionand reception, signals are detemined by the difference between two lines that are both at different voltages relative to ground. Differential SCSI signalscan be used over longer distances and at higher data rates. A differential SCSI bus is incompatible with a single-ended SCSI bus.
host adapter Seeadapter. 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-architectedbus through which the CPU, memory, and input/output adapter cards communicate. HP-PB card Seeadapter. Interface card Seeadapter. UO Input/Output. The computer subsystemthrough which data communications with external devices is performed. IODC I/O Dependent Code.
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 Xl-conductor connector consisting of two rows of ribbon contacts spaced 2.16 mm (O.OsSin) apart. See also, high-density connector. parallel port The Z-pin connector on the SCSI/parallel adapter card for S-bit parallel data communications with an output only device, such as a printer.
SCSI-2 Complies with the SCSI specilication X3.131 - 1990. SCSI-Z provides extensions and further standardization of SCSI-l. SCSI address The octal representation of the unique address (0 to 7) assignedto each device on an SCSI bus. For bus arbitration, higher addresseshave priority over lower addresses. SCSI addressesare typically assigned during installation. The host adapter is typically assigned“7”.
system administrator The person who managesor controls the configuration and operation of a computer system. terminator An assemblythat 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.
Index A accessories...l-4 adapter configuration...l-7 connecting...1-11 exchangeassembly..23 hardware address...&l3 HP-PB specifications...l-12 HP-UX drivers...l-27 inserting into the computer...l-ll, l-17 part number...13,2-3 removaVreplacement,..2-10 storing...13 version...14 antistatic precautions...l3,2-9 attaching the cable...l-18 B bus terminator...
C cable connecting to the card...l-18 paraliel...l-3, l-23,2.4 part number...l-3,1-S, l-21 SCSI...l-3,1-18,2-4 SCSI bus length...l-20,1-21 troubleshooting...2-7 card version...14 checklist, troubleshooting..27 components removing and replacing...2-11 replaceable...2-4 computer power during installation...l-6 during removaI/replacement...2-10 configuration c.ard...l-7 hardware...l-7 operating system...l-27 systemdependencies...l-13 troubleshooting...2-7 connecting peripheral devices...
electrical specifications..216 electromagnetic specifications..2-16 environmental specifications..516 exchange assembly part number...2-3 F field replaceable units se-eFRUS filler card...l-14 removing...l-15 FRUs...2-3 part numbers...2-4 fuse...24 removaUreplacement...2-12 TERMF’WR LED...2-6 H hardware address...l-13 configuration...l-7 HP Precision Bus SeeHP-PB HP-PB specitications,..l-12 HP-UX system...2-15 configuration...127 I identification information...l-4 installing adapter card...
L LEDs...2-6 troubleshooting...2-5 verifying card operation...l-28 light emitting diodes SeeLEDs loopback hood...2-4 MPE XL system...2-15 configuration...l-27 0 operating system...l-13 configuration.,.l-27 supported...2-15 P parallel cable...13,1-18,2-4 connecting devices...123 parity checking...l-7,1-8 part number adapter card components...24 exchange assembly...23 product contents...l-3 performance...‘t-l5 systemconsiderations...l-13 peripheral devices connecting...l-19 physical specifications...
power during instailation/removai...l.6,1-19, l-26,2-10 symbol for standard power sIot...l-12 product contents...13 PROMS removaVreplacement..2-11 R removalkeplacement 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...&10 S SCSI address..&7,1-9 bus length requirements..&20,1-21 cable..&3,1-S, l-18,24 hardware con@uration...l-7 peripheral devices...&19 single-ended devices...l-19 terminators...
slot divider..S-4,1-5 instaBiig...l-15 specifications...2-14 storing adapter cards...l-3 switch default settings&S hIcation...1.7 &ylrlbo~ standard power card..&12 systemperformance considetations...l-l3 systemshut down during installation/removal..J-6,1-19,2-10 T technical specifications...2-14 termination power SeeTERMPWR termination resistors...l-7,2.4 terminator...l-3, l-20,2-4 troubleshooting..2-8 TERMPWR fuse...2-6,2-12 LED...26 precautions...l-19 troubleshooting..2-8 tools and accessories,.
HEWLETT:,’ PACKARD Reorder No. or Manual Part No.
