HP 28655A Datasheet

HP 28642A HP-PB SCSI HP 28655A HP-PB SCSI/ Parallel

1 Installing the HP 28642A/28655A Adapter

lnstalllng the HP 28642A/28655A Adapter This chapter contains installation instructions for the HP 28642A/28655A HP-PB SCSI/Parallel adapter card.

1. Prepare to Install the Adapter Card Before installing the SCSI/parallel adapter card, perform the following: 1. Observe antistatic precautio

Record Adapter Card Identification Information Should your card require service, its part number and date code may be needed by HP service perso

Note You should have all of your system and peripheral device manuals available for refirence. There may be special system or device dependent requir

2. Shut Down the System and SwZtch Off the Computer 1. Before installing the card, ensure that the operating system is shut down. Consult you

3. Check the Card’s Hardware Configuration Hardware settings for the SCSI/parallel adapter apply to the SCSI port only. There are no hardware se

Set the Desired Parity-Checking CapabUity AU devices on a SCSI bus must have the same parity-checking capability. If any device on the SCSI bus

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

Verify that Resistor Packs are Properly Installed A SCSI bus has two ends between which SCSL devices are attached. Each end of a SCSI bus mus

HP HP 5960-3126 El091

4. Install and Connect the Card The HP-PB cardcage accommodates two sixes of cards: single-high (Eurocard standard 3U) or double-high (6U). T

m Authorized or recommended slots for the SCSI/parallel adapter. - The SCSI/parallel adapter is a standard HP-PB card. Typically, it can be inst

n Computer hardware limitations for l/O cards, if any. The HP-UX and MPE XL operating systems support the use of this card. However, the particula

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,

Removing Filler Cards A plastic “filIer” card is normally installed when a slot is not in use. In some systems, the filler card helps to channel ai

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 Mat

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 o

Attach the Card Cables Figure l-10 shows a typical installation with both the SCSI port and parallel port cables attached (the use of the parall

Connect Your Peripheral Device(s) You can connect SCSI devices (single-ended devices only) to the SCSI port, and a parallel communication device to

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

@Hewlett-Packard Company, 1991. AI1 rights rcservcd, Hewlett-hckard Company makes M wsmmty of any kind with regard to this material, btcb~dittg. but

CAUTION Only the two ends of a SCSI bus should be terminated. Excessive or improper termination may overload the termination power circuitry on the

A SCSI Cable Length Example Table l-3 and figure 1-12 demonstrate how to calculate SCSI bus cable lengths for a typical installation. The SCSI 0.5

Connect Your Parallel Device, If Applicable Output-only parallel devices, such as common printers, can be connected to the parallel port. Figur

Pin 1 Pin 13 Pin 14 Pin 25 Figure 1-13. Parallel Port Pins Table 1-4. Signal Pin Assignments Pin Number Signal Name In/Out Pin Number Signal

Pin25 ;. II :: :: :: :: 0 . % Pin 36 Fin 1 Pin 1 25Pin Connector, Host End B-Pin Connector, Peripheral End Figure 1-14. Parallel Cable Wirin

Turn Power On to Peripherals, Then to the Computer Before turning power on, follow these steps: 1. Verify that a11 cables are connected and

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

8. Verify Operation To verify card operation, observe the light indicators: n The yellow self-test LED should be off. n The green termination p

2 Service Information

Service Information This chapter provides the following service and reference information: m Field Replaceable Units 8 Troubleshooting Tools H R

Installation and S&vice HP28642A HP-PB SCSI HP 28655A HP-PB SCSI/Parallel

Field Replaceable Units Field replaceable units (F’FWs) are assemblies or components that are authorized for field replacement. Field replacement of

Board Components The foIIowing board components are available for replacement (see figure 2-l for location): PROM (location U52): 28655-81001 Fuse

Troubleshooting Tools Troubleshooting tools are used to identify faulty FRUs. For this product, the following tools are described below B Self-Te

Self-Test Failure LED The Self-Test Failure LED is yellow and will indicate card test failures when used by fhe host system. Card self-test code c

SCSIPBA and CENTPBA Diagnostics Standard diagnostics, scsipba and centpba, are available for use by authorized service personnel. For more informa

Table 2-I. Troubleshooting Checklist (continued) Are the SCSI bus terminators correctly installed? Both ends of the SCSI bus require termination

Removal/Replacement Instructions This section describes removal and replacement instructions for the following items: l The SCSI/parallel adapter n

Removal/Replacement of the Card For card removal, follow the procedures below: 1. Before removing the card, ensure that the operating system is sh

Removal/Replacement of Card Components Replaceable card components are socketed to facilitate their removal and replacement. PROM and Termlnation

To install replacement components, proceed as follows: 1. Identify the proper socket location for the replacement component. 2. Note the half-circ

HP 28642A and HP 28655A at a Glance A- Extractor lever. B - Retaining (captive) screw. C - Self-Test Fail LED (yellow), normally off. D -

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

Reshipment Guidelines If any item of the product is to be returned to Hewlett-Packard for any reason, contact your HP Safes and Support Office to

Technical Specifications Table 2-2 SCSI/Parallel Adapter Technical Specifications General Supported I HP 9bOO Series 600/800 HP-PB computers (HP

Table 2-2. SCSI/Parallel Adapter Technical Specifications (continued) Voltage Current (Typical) Power ~tcal) Electrical +5 Vdc 0.75 A 3.75 w +

Glossary adapter, adapter card An add-on computer interface card and circuitry that provides the physical connection and data translation between

device In this manual, refers to the peripheral units that are attached to the SCSI/parallel adapter card. device adapter See adapter. differential

host adapter See adapter. HP-PB Hewlett-Packard Precision Bus. The data, control, and addressing signal lines for input/output operation on Hewlett-

loopback hood A special connector with signal lines configured to allow loopback testing of the adapter card. low-density connector In reference to t

SCSI-2 Complies with the SCSI specilication X3.131 - 1990. SCSI-Z provides extensions and further standardization of SCSI-l. SCSI address The octal

system administrator The person who manages or controls the configuration and operation of a computer system. terminator An assembly that contains a r

Product Description The HP 2S642A/HP 2S655A HP-PB adapter is a computer interface card for use in HewIett-Packard computers that use the HP-PB (HP Pr

Index A accessories...l-4 adapter configuration...l-7 connecting...1-11 exchange assembly..23 hardware address...&l3 HP-PB specifications...l-12 H

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 troublesh

electrical specifications..216 electromagnetic specifications..2-16 environmental specifications..516 exchange assembly part number...2-3 F field repl

L LEDs...2-6 troubleshooting...2-5 verifying card operation...l-28 light emitting diodes See LEDs loopback hood...2-4 MPE XL system...2-15 configur

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

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~ sta

Reorder No. or Manual Part No. 5960-3126 El091 Printed on Recycled Paper HEWLETT:,’ PACKARD I llllllll I lllll III lllll llll llllll Ill 11111 I

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

Table of Contents Chapter 1. Installing the HP 2s642Al28655A Adapter 1, Prepare to Install the Adapter Card ... 1-3 Observe

Chapter 2. Service Information Field Replaceable Units ......... 2-3 Exchange Assembly ......... 2-3