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June 1988

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Document:	RA90 Disk Drive User Guide
Order Number:	EK-0RA90-UG
Revision:	1
Pages:	60
Original Filename:

OCR Text

EK-ORA90-UG-O01

RAQO Disk Drive
User Guide

Prepared

Educational

Services

Digital Equipment Corporation

First Printing, June 1988

Digital Equipment Corporation makes no representation that use of its products with those of other manufacturers will
not infringe existing or future patent rights. The descriptions contained herein do not imply the granting of a license to
make, use, or sell equipment or software as described in this manual.

Digital Equipment Corporation assumes no responsibility or liability for the proper performance of other manufacturers’

products used with its products.

Digital Equipment Corporation believes that information in this publication is accurate as of its publication date. Such
information is subject to change without notice. Digital Equipment Corporation is not responsible for any inadvertent

errors.

Class A Computing Devices:

NOTICE: This equipment generates, uses, and may emit radio frequency energy. It has been tested and found to

comply with the limits for a Class A computing device pursuant to Subpart J of Part 15 of FCC rules for operation in
a commercial environment. This equipment, when operated in a residential area, may cause interference to radio/TV
communications. In such event the user (owner), at his own expense, may be required to take corrective measures.
Copyright © 1988 by Digital Equipment Corporation

The following are trademarks of Digital Equipment Corporation:

DECnet
HSC
KDAS50
KDB50
MASSBUSS
MicroVAX
RA60
RA70
SABB

RA81
RAS82
RA90
SA482
SA600

TA78-81
TU78-81
RAS80

UDAS0
UNIBUS
VAX
VAXsimPLUS
VMS

VT
Work Processor

)

dligliltlall

Contents

About This Manual

INTRODUCTION
1.1.L1

Drive Description . . . . .. .. ... ..

ittt

1.1.2

Hardware Maintainability . . . . ... ... ... ... ...

1.1.3

Dual-Port Capability

1.14

1.2

vii

ittt

1-1

. . . .. ...

1-2

. ... ........ .. . ... .. i

1-3

Drive-Resident Diagnostics . . . . . . . . . 0 i i i it i it ittt ettt

RA90 USER PRECAUTIONS/RECOMMENDATIONS

.. .............

1.2.1

Recommended Operating Temperature . . . . . S

T NI IO

1-5

1.2.2

Electrostatic Discharge

... ... . ... ... ... .

1-5

1.2.3

Electrostatic Protection . . . . . ... ... ... ...ttt

1-5

1.3

DESCRIPTION OF MAINTENANCE STRATEGY . . . .. .. ...

1-6

RA90 DISK DRIVE SPECIFICATIONS

1-7

. .. ..

. . ... ... .. .. .. ...

INSTALLATION
21

INTRODUCTION

2.2

SITE PREPARATION AND PLANNING . . . . . . .. .. 0ttt i ittt et e

2.2.1

222

223

................ R

2-1

PowerRequirements
. . ... .. ... ...t
tuutnienson

Thermal Stabilization . . . . ... . .

Environment . . . . .. ...

- 2-1
2-1

... ... ... ..

2-1

e e e

e e

2-1

e e

e e e e

224

FloorLoading

. . ... .. ... ... ...

2-1

2.2.5

Operating Temperature and Humidity . . . .. ... .................

2-2

INSTALLING RA90 ADD-ON DRIVES IN 60-INCH CABINETS . ... ... ..

2-2

2.3
2.3.1

Unpacking the RA9O Disk Drive

. ... ... ... . . 0.,

2~2

232

Preparingthe Cabinet . . . ... ... ... ... ... ...

iunenn.

2.3.3

Removing the Front and Rear Access Panels

e e e e

2-5

234

Drive Add-On Order

. .. ... ... ... .ttt

2-7

235

Installing the Chassis . . . ... ... ... ... ... ...

2-8

SDI AND POWER CABLE INSTALLATION . . ... ... .............

2-8

e e e e e

24.1

Internal SDI Cable Installation . . . . . e

e e

2-11

24.2

Internal Power Cord Installation . . . ... ... ... ................

e e e e e e e

e e e

2-13

Contents

Installing External SDICables . . . . ... ... ..o
243
2.5 POWER AND SAFETY PRECAUTIONS .. ... ... .oy
ACPower Wiring . . . . . . o vt i it o vttt
251
Cord . . ... ... ...t
ng
Power
ggi
2,52 Pluinthe
26 VOLTAGE SELECTION . . . .. .. & ittt eesenoeeon
27 RA90 OCP CONTROLS AND INDICATORS . . . ... v vv e oo
Functions of the OCP . . . . . . . . i i it ittt i e e
271
e e
2.8 POWER-UP RESIDENT DIAGNOSTICS .......... e
Problemsat Power-Up . . ... ... e
281
oe e
.t
vo
29 ACCEPTANCE TESTING . ... ..
e
vvevvve
covv
Operator Control Panel Lamp Testing . . . . ...
29.1
e
292 Drive Testing Spun Down . . . . . ... oo i
29.3 Drive Testing SpunUp . . .. ... ... .. P
2710 PLACING THEDRIVEONLINE. . . . . .. .ottt v it ian oo
2.10.1 Programming the Drive Unit Address . . . . . ... ... o vvv oo e

2-13
2-13
2-13
2-16
2-16
2-19
2-19
2-20
2-21
2-21
2-21
2-22
2-22
2-23
2-23

OPERATING INSTRUCTIONS

31 INTRODUCTION . . . ittt ettt st e e e o e en s v s aee o
e e
3.2 FUNCTIONS OFTHEOCP ...... e e e e e e e e e e e
33 OPERATING MODES . . . . . . o ittt i ittt et te e st e e
331 Normmal Mode Setup . . . . o v v oo v i vt it
33.2 Fault Display Mode Setup . . . ... ..o vviviiii i
333 TestMode Setup . . . . . v oo v it
334 Programming the Drive Unit Address. . . . . ... ...
335 TestSelection fromthe OCP . . . . . .. .. it

3-1
3-1
3-2
3-3
3-3
3-5
3-5
3-6

DIAGNOSTICS AND UTILITIES
41 GENERAL INFORMATION . . o v v oottt

e e e

POWER-UP RESIDENT DIAGNOSTICS . « « s e v oeeeeeeeeeeunns
TEST SELECTION FROM THE OCP . « ot oot etee et eeeeenens

41
4-3

e et

47 DRIVE-RESIDENT DIAGNOSTICS . .+« v o eveeeeeeaeen L
43
44

IndeXx

3‘

Contents

Figures
1-1

1-2

RA90 Disk Drive

e e e e e e

1-2

Typical RA90 Subsystem Configurafion

1-3

RA90 Dual-Port Configuration . . . . . . . . ..t v

ESD Wrist Strap

2-1

. .............
ackaging
RA90 Disk Drive Packagi

2-2

Stabilizer Foot

e e

1-3

a e,

1-4

.....................................

1-6

vt o it i
e e e

e e e

e e e e

. cccccccccccccccccccccccccccccccccccccc

2-3

e e et e .

2-5
2-6

2-5

Rear Access Panel Removal ........ e e e e e e e e e e e e e e e e e e e e
e e e e e e e e e
Drive Add-On Order . . . . . . . i i i i e e e e e e

2-6

Chassis Installation . . . . . . ¢ v v v v v v i e et e e e

2-3

Front Panel Removal . . . . . o i i i s e

e e et e e e e

e e e e e e e e .

2-7

2-9
2-10

2-7

I/O Bulkhead . .

2-8

Power Controller

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

2-11

2-9

Cable Routing . .

iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii

2-12

2-14

e e e e e

2-15

aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa

2-17

2-10 Power Cord Routing . . . . . . .. .o i

2-11

Electrical Plug Configurations

2-12 Voltage Selector
2-13

Drive Circuit Breaker LOCation

2-14 RA90 OCP

it e

ittt

. ............ e

. . . . . ¢ v v i v i v v v e v e o e ot ot s

s e

2-18
2-20

. ..

OCP Displays During Normal Testmg C et e s e s e e e
...
2-16 Unit Address Selection Flowchart . . ... ... .. ... ...........

2-22

. .. iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii

3-2

s ..

3-3

it e i

2-15

3-1

RA90 OCP

. ................ C e

e s e

2-25

3-2

Fault Display Example

3-3

Fault Mode Flowchart . . . . . .. ... . . ...

3-4

RA90 Test Display . . . . . . ... 0

3-5

Running Test OCP Display . . . . ... ...... ..o,

3-5

ittt

...

3-7

Test Select Flowchart

ittt ittt e

3-8

4-1

Power Supply Indicator . . . .. ... ... ... .. i
e .
e
Test Selection Flowchart . .................. C

4-3

3-6

4-2

Unit Address Selection Flowchart . . . .. ... ........... .
. . . .. .. . . .

4-5

Tables
1-1

RA90 Specification Table . . . .. ... ... ... i

2-1

OCP Error Codes

;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

1-7

2-21

About This Manual
This manual contains a product description and operating information for the end user of the RA90

disk drive. Drive specifications and environmental considerations are included in the introductory
chapter of this manual.

The operating instructions in this manual include start-up procedures for the RA90 disk drive as well
as normal on-line drive operations. A section for user troubleshooting provides some simple checks to
perform before calling field service.
Installation instructions in this manual are intended for use by DIGITAL field service engineers
performing original installation of the RA90 disk drive. Qualified field service engineers must have
training in the following:
*

RA90 disk drive

DSA concepts

ESD procedures

vii

1
INTRODUCTION
GENERAL INFORMATION

1.1

This manual contains the RA90 disk drive specifications. It describes how to install and operate the
RA90 disk drive and how to perform reliability tests.

The RA90 is a member of the Digital Standard Architecture/Standard Device Interconnect (DSA/SDI)
family and, therefore, is plug compatible with all DSA/SDI controllers.

1.1.1

Drive Description

The RA90 is a standalone disk drive that uses nonremovable, thin film media and thin film heads
encased in a unit called the head disk assembly (HDA). The RA90 is a moving head, random access
disk drive with a formatted data storage capacity of 1.216 gigabytes and an unformatted data storage

capacity of 1.616 gigabytes in a 16-bit word format. The RA90 is a self-contained, independently
powered and cooled disk drive. Figure 1-1 shows an RA90 standalone disk drive.
In addition, the RA90 has the following characteristics:
e

22 MHz peak data transfer rate

Thin film heads and media

Dedicated and embedded servo for coarse and fine track positioning

Three internal microprocessors

Reduced drive electronic module set

Internal error log capabilities

No scheduled preventive maintenance

Extensive resident microcode diagnostics

Multifunction operator control panel (OCP)

1-1

1-2

INTRODUCTION

RA90
DISK

CXO0-2196A

Figure 1-1

RA90 Disk Drive

Figure 1-2 is a representation of a typical RA90 subsystem configuration including an SDI controller.

1.1.2 Hardware Maintainability
The RA90 disk drive uses modular field replaceable units (FRUs) for easy access and servicing.
Preventive maintenance is limited to periodic cleaning of the air filter.
Additionally, an extensive set of drive-resident microcode diagnostics and a dnve-remdent error log

contribute to the ease of problem isolation.

INTRODUCTION

DRIVE CABINET

RA90
DRIVE

1-3

DRIVE CABINET

CONTROLLER A

—e

RA90
DRIVES

—e

——1
o

EIEN
|

|
\ A
I/0 BULKHEAD

o-1—

SDI CONTROLLER A

\\//
I/O BULKHEADS

SDI CABLES

CXO0-2197A

Figure 1-2

Typical RA90 Subsystem Configuration

1.1.3 Dual-Port Capability
With both port switches selected, the RA90 disk drive operates in a static dual-port mode. Static dual
porting means the RA90 can be shared between two controllers; however, the driveis on line to only
one controller at a time for data transfers. The second controller must wait until the driveis available
before placing the drive on line to itself.
|
Ports are selected by the port select switches (A or B) on the front of the operator control panel

(OCP). An additional SDI cableis required for dual porting. Figure 1-3 shows an RA90 dual-ported
configuration.

1-4

INTRODUCTION

RA90
DRIVE

DRIVE CABINET
y

|
l
CONTROLLER A

PORT | — |

CONTROLLER B

—A
—8

SDI CONTROLLER A

:
-

—

I/O BULKHEAD

SDI CONTROLLER B

_.+ _______

|
|
|
|

e s, ol

SDI CABLES

s e s ss s

I/O BULKHEADS
CXO-2198A

Figure 1-3

RA90 Dual-Port Configuration

1.1.4 Drive-Resident Diagnostics

Drive-resident diagnostics run during power-up and spin-up cycles and test basic drive functions.
Additionally, resident diagnostics are invoked by the drive any time the drive enters an idle-loop state

and neither port is selected.
Resident diagnostics can also be run from the OCP while the drive is off line. See Chapter 4 for a
listing of these diagnostics.

1.2

RA90 USER PRECAUTIONS/RECOMMENDATIONS

Data is not recoverable on an inoperable HDA. It is, therefore, up to the user to protect data by using

proper backup procedures. The following methods of backup are recommended for the RA90:
»

File duplication - This normally involves copying the data on removable media such as magnetic
tape.

Journaling - This method is recommended for files in a transaction processing application. It allows
reconstruction of files up to the last checkpoint or backup.

CAUTION
Data is not recoverable on an inoperable HDA. Data must be backed up.

INTRODUCTION

1.2.1

1-5

Recommended Operating Temperature

The RA90 can be operated within a temperature range of 10°C to 40°C (50°F to 104°F).

It is, however, highly recommended the RA90 be operatedin a temperature range below 25°C ('77 °F)
to realize increased reliability and life of product.

1.2.2 Electrostatic Discharge
Electrostatic discharge (ESD) is caused by the buildup and release of static electricity. An electrical
charge from a person or object can damage hardware components and result in premature device or
option failure.

1.2.3 Electrostatic Protection
The basic concept of complete staticprotection for electronic components is the prevention of static
buildup, where possible, and the quick reliable discharge of static buildup.
If the charged object is a conductor, complete discharge can be achieved by grounding.
CAUTION

To avoid product damage, always use grounding straps when handlmg static-sensitive modules
and components.

Use the following guidelines when handling static-sensitive components and modules:
1.

Be properly grounded when handling modules, components, or static-sensitive devices.

Use static-protective containers to transfer modules and components (including bags and tote
boxes).

Figure 1-4 shows the electrostatic wrist strap in use. Note that the grounding cord connects the wrist
strap and the conductive work surface to ground.
When using an ESD wrist strap:

Ensure the wrist strap fits snugly for proper conductivity.

Do not overextend the grounding cord.

Attach the alligator clip securely to a clean, unpainted, grounded, metal surface such as the drive
or cabinet chassis.

1-6

INTRODUCTION

ARMARAML

CIRRRRRRERRN

RAARAARARRA

ARARRARRARA
AAAAAANL R

—SWARIIR \

ALLIGATOR
CLIP

DRIVES

e‘“n‘uu(n)““‘

‘
o8

__— WRIST STRAP

GROUNDING ESD

GROUNDING
CX0-2168A

Figure 1-4

1.3

ESD Wrist Strap

DESCRIPTION OF MAINTENANCE STRATEGY

The repair strategy for the RA90 is replacement of the failing field replaceable unit (FRU). Internal
error logs and resident/host-level diagnostics are used to isolate the failing FRU,
It is recommended that only trained field engineers attempt to service the RA90 disk drive.

INTRODUCTION

1.4

RA90 DISK DRIVE SPECIFICATIONS

Table 1-1 lists important operating and nonoperating RA90 disk drive specifications.
Table 1-1

RA90 Specification Table

Characteristic

Specification

Head Disk Assembly
(HDA)
Storage capacity

1.216 gigabytes (formatted)

Storage capacity

1.616 gigabytes (unformatted)

HDA word format

16-bit only

Bits/square inch

40 me;bits

Tracks/inch

1750

Disk recording method

Rate 2/3 modulation code

Number of disks

Disk surfaces

14 (13 data and 1 servo)

Number of heads

Heads per surface

Number of tracks

37,254

Logical cylinders

2656

User lagical cylinders

2649

Number of sectors

69 + 1 spare

Number of logical blocks

2,376,153

Maximum Seek Times
Full cylinder seek

30.5 milliseconds

One cylinder

4.0 milliseconds

Average seek

17.5 milliseconds (19.0 milliseconds with subsystem overhead)

1-7

1-8

INTRODUCTION

Table 1-1 (Cont.)

RA90 Specification Table

Characteristic

Specification

Latency |
Speed

3600 r/min

Maximum latency

16.67 milliseconds

Average iatency

8.33 milliseconds

Single Start/Stop Time
Start (maximum)

40 seconds

Inhibit between stop and

40 seconds

restart

Data Rates
Bit rate

22.1 megabits

Byte rate (8-bit)

2.1 megabytes

Environmental Limits
(Maximum)
Temperature (Required)

Operating

10 to 40°C (50 to 104°F) with a temperature gradient of 20°C/hour (36°F/hour)

Nonoperating

-40 to +60°C (-40 to +140°F)

Relative humidity

Operating
Nonoperating

10% to 90% (noncondensing) with a minimum wet bulb temperature of 28°C
(82°F) and a minimum dew point of 2°C (36° F)

10% to 90% with no condensation

The following are recommended environmental ranges to optimize equipment performance and reliability:

INTRODUCTION

Table 1-1 (Cont.)

1-9

RA90 Specification Table

Characteristic

Specification

Environmental Limits
Recommended Range
Temperature

18 to 24°C (64.4 to 75.2°F) with an average rate of change of 3°C/hour maximum
and a step change of 3°C or less

Relative humidity

40% to 60% (noncondensing) with a step change of 10% or less (noncondensing)

Air quality (maximum
particle count)

Not to exceed 500,000 particles per cubic foot of air at a size of 0.5 micron or

Air volume (at inlet)

50 cubic feet per minute (.026 cubic meters per second)

larger

Altitude

Operating

Nonoperating

Sea level to 2400 meters (8000 feet). Maximum allowable operating temperatures
are reduced by a factor of 1.8°C/1000 meters (1°F/1000 feet) for operation above
sea level.
300 meters (1000 feet) below sea level to 7500 meters (16,000 feet) above sea

level (actual or effective by means of cabin pressurization)

Physical Characteristics
Height

26.56 cm (10.42 inches)

Width

22.19 cm (8.74 inches)

Depth

68.47 cm (26.96 inches)

Weight

31.8 kg (70 pounds)

Inrush Current
120 Vac, 60 Hz

60 amperes peak @ 132 Vac

220-240 Vac, 50 Hz

70 amperes peak @ 264 Vac

Running current for:
120 Vac, 60 Hz

4.6 amps

220-240 Vac, 50 Hz

2.4 amps

Power factor:
120 Vac, 60 Hz

0.7

220-240 Vac, 50 Hz

0.58

1-10

INTRODUCTION

Table 1—-1 (Cont.)

RA90 Specification Table

Characteristic

Specification

Line cord length (from the

2.74 meters (9 feet)

cabinet)

Nominal

Input

Power

Dissipation

BTUs/Hr

101

3.5 amps RMS

217 watts

925

120

3.1 amps RMS

282 watts

962

220

2.0 amps RMS

280 watts

956

240

1.9 amps RMS

283 watts

966

Voltage

Current

2
INSTALLATION
2.1

INTRODUCTION

This chapter describes the installation procedures for the RA90 disk drive. Safety precautions, site
preparation, planning, cabling, and acceptance testing are also covered.

2.2

SITE PREPARATION AND PLANNING

Site preparation and planning are necessary before installing an RA90 disk subsystem. Consider the

following items before installation.

2.2.1

Power Requirements

The RA90 disk drive uses a single-phase power supply; however, operating voltages are supplied to the
drive through an 881 power controller. The 881 power controller is a three-phase controller requiring
the presence of three-phase power.

2.2.2 Thermal Stabilization
Equipment must be placed in its operating environment at least 24 hours prior to operation. Thermally
stabilizing the equipment prevents temperature differences from causing problems to drive components.
CAUTION

This equipment must be thermally stabilized in its site environment before being operated.
Twenty-four hours is the required stabilization time period. Failure to stabilize may cause
premature equipment failure.

2.2.3 Environment
The RA90 disk drive must be operated in an environment where the ambient air particle count does not
exceed 500,000 particles (larger than 0.5 micron) per cubic foot of air.

2.2.4 Floor Loading
Consider the placement of this equipment. A fully loaded 60-inch cabinet weighs 402 kilograms (885
pounds). Each RA90 disk drive weighs approximately 31.8 kilograms (70 pounds).

2-1

2—2

INSTALLATION

2.2.5 Operating Temperature and Humidity

The required relative humidity range is between 10% and 90% with a minimum wet bulb temperature
of 28°C (82°F) and a minimum dew point of 2°C (36°F) (noncondensing) with a step change of 10%
or less.

The RA90 can be operated in temperatures ranging from 10°C to 40°C (50°F to 104°F).
It is, however, highly recommended that the RA90 be operated in a temperature below 25°C (77°F) to
increase reliability and extend the life of the RA90.

2.3 INSTALLING RA90 ADD-ON DRIVES IN 60-INCH CABINETS

This section describes RA90 disk drive installation in 60-inch cabinets. Under most conditions, drive
hardware has been installed in the original SA configuration. However, details of drive installation are
provided as a reference.

Cabinet stability and drive accessibility are prime considerations when adding a disk drive to an
existing cabinet configuration. Section 2.3.4 offers the recommended order for add-on RA90 disk
drives.

2.3.1 Unpacking the RA90 Disk Drive

Check packaging for external damage. Read and save any packing information. Keep all packing

material and receipts in case of damage or problems with the equipment. Refer to Figure 2-1.
1.

Remove the shipping straps.

Open the container.

Remove the packing material from around the drive.

Remove the drive.

WARNING

’"

Drives weigh 31.8 kilograms (70 pounds) and must be handled with care.

INSTALLATION

2-3

CONTAINER

DESICCANT

CX-2067A

i A= = et ~ 1
]

4
o <®o Q 2 x o =@ o@ O X S ) £ o

2-4

INSTALLATION

2.3.2 Preparing the Cabinet

.A &Bt e 3

NR &oot = R a.f3o

Pull stabilizer foot (located at center bottom of cabinet) forward.
5 ) ] S2 = N] k-s g= - = c3]v E O &8

B = |© = 8x

Ensure stability of cabinet before beginning the next procedure.

STABILIZER FOOT
CX0-2140A

Figure 2-2

Stabilizer Foot

INSTALLATION

2-5

2.3.3 Removing the Front and Rear Access Panels
Use the following procedure to remove front and rear cabinet access panels. Refer to Figure 2-3 and
Figure 2—4 while performing this operation.

Refer to Figure 2-3 and remove the front access panel as follows:

T~ QUARTER-TURN
FASTENER

HEX
WRENCH

FRONT

PANEL

ff“ff

SUPPORT

BRACKETS
CX0-2130A

Figure 2-3

Front Panel Removal

Unlock the two quarter-turn fasteners at the top of the panel. Use a hex wrench to turn the
fasteners counterclockwise.

2—-6

INSTALLATION

Grasp the panel by its edges, tilt it toward you, and lift it up about 2 inches. Remove and store the
panel in a safe place.

To reinstall the front panel, lift it into place and lower it straight down until the pins on the lower

edge of the panel engage the holes in the cabinet. Hold the panel flush with the cabinet and lock the
fasteners.
Refer to Figure 2—4 and remove the rear access panel as follows:

Tumn the two quarter-turn fasteners located at the top of the panel counterclockwise.

Tilt the panel toward you and lift it up to disengage the pins at the bottom.

Lift the panel clear of the enclosure.

When replacing the rear panel, lift it into place and fit the pins into the holes at the top of the I/O

bulkhead. Push the top of the panel into place and turn the quarter-turn fasteners clockwise to lock.

FASTENER

QUARTER-TURN

CABINET

REAR
BUSTLE

HEX
WRENCH

\ REAR

ACCESS
PANEL

CXO0-2131A

Figure 2-4

Rear Access Panel Removal

INSTALLATION

2.3.4 Drive Add-On Order

L';r’

ns————

L_LJ

Refer to Figure 2-5 for the suggested order of add-on drives. Each cabinet location has a number
associated with it. These numbers represent the recommended add-on sequence for the RA90 disk
drive.

CX0-2141A

Figure 2-5

Drive Add-On Order

2-7

2—-8

INSTALLATION

2.3.5 Installing the Chassis
Refer to Figure 2-6 while performing installation of the drive chassis.
1.

Select the appropriate drive position (Figure 2-5).

Slide the drive onto the pre-mounted hardware.

Bolt the chassis to the center support bracket.

2.4

SDI AND POWER CABLE INSTALLATION

This section documents external and internal SDI cable and power cord installation. A fully configured
cabinet has internal SDI cables and power cords in place. This section is intended as a reference.
Both external and internal SDI cable connections are made to the I/O bulkhead located at the base of
the drive cabinet. See Figure 2-7.
Drive power cord connections are made to the 881 power controller located behind the I/O bulkhead at

the bottom of the cabinet. Refer to Figure 2-8 when connecting power cords.

INSTALLATION

CABINET

FRONT

\N,;\
~N. O~
N

2-9

\ o

WASHER

RAIL

MOUNTING

SCREWS

RA0

DRIVE

CHASSIS

\‘ L
e

ZZ<_

’t

'E<: " o
¥-

MOUNTING

SCREWS

RIGHT SIDE
MOUNTING

RAIL
CXO-2142A

Figure 2-6

Chassis Installation

= 0<

Figure 2-7

/0 Bulkhead

0 o0QO o0C °oQ
| 3 ® ]e
aggaon

e1000/o) =) D ks T
- QOo Qo NJQo
Oo000

oooQO0eooQ¢.0ooQ410]oooQ<( 0o. mF eOOeo .
010m<m <— _

300QoOoOooQ<00o3oo0(Qo10O]7.°o0¢c.Q[Q&- w,anvs4 mQwau% =
2-10
@)

CXO0-2132A

2-11

w ]

|I—

p—

————o.

INSTALLATION

POWER

CONTROLLER

BUS/OFF/ON SWITCH

(CLOCKWISE FROM TOP)

POWER CORD

T ABEL

POWER CONTROL

STRAIN RELIEF

BUS CONNECTORS

BREAKER

GROMMETED
CORD

OPENING

|
UNDELAYED

FUSE

gggg R

DELAYED

(0.5 SEC)

SERIAL/LOGO
LABEL

CX0-2136A

Figure 2-8

2.4.1

Power Controlier

Internal SDI Cable Installation

Figure 2-9 shows the routing of internal SDI cables in a fully configured RA90 cabinet. Use this
example when installing or moving SDI cables.

2—12

INSTALLATION

DRIVE
PORTS

=
|

[

SDI

CABLES

I/0 BULKHEAD

SDI
CABLES
CX0-2183A

Figure 2-9

Cable Routing

INSTALLATION

2-13

2.4.2 Internal Power Cord Installation
Figure 2—-10 shows the internal cabinet power cord routing in a 60-inch cabinet with eight RA90 disk
drives. Use this example when installing or moving power cables.

2.4.3 Installing External SDI Cables
Refer to Figure 2-7 for cable-to-port connections when installing external SDI cables.

2.5

POWER AND SAFETY PRECAUTIONS

The RA90 does not present any unusual fire or safety hazards. It is, however, recommended you check
ac power wiring for the computer system to determine adequate capacity for expansion.
To protect personnel and equipment, ensure power sources meet the specifications required for this

equipment.
WARNING

Hazardous voltages are present in this equipment. Installation and service must be performed
by trained service personnel. Bodily injury or equipment damage may result from incorrect
servicing.

2.5.1

AC Power Wiring

Three-phase power must be present in order to support the installation of an 881 power controller.
The wiring used by Digital Equipment Corporation conforms to UL, CSA, and ISE standards.

Figure 2-11 shows the ac plug configurations for the RA90 disk drive and the 881 power controller.

2-14

INSTALLATION

DRIVE
POWER
CORDS

[Jvs [los [Joe NE
[
[ D.Ja [Joe l DJZ

DRIVE
POWER
CORDsS

POWER
CONTROLLER
AC POWER
CORD

CX0-2133A

Figure 2-10

Power Cord Routing

INSTALLATION

POWER CORDS GOING TO POWER CONTROLLER (FROM REAR OF ENCLOSURE
)

120V 60HZ
POWER CORD

DEC NO. A-PS-1700083-23

240V 50HZ

POWER CORD
DEC NO. A-PS-1700083-24

120/240V 47-63HZ
10A/6A

POWER CORD

DEC NO. A-PS-1700442-18 OR
A-PS-1700442-19

USED WITH 881 POWER CONTROLLER

PLUGS GOING TO WALL OUTLET (FROM CONTROLLER)

" [ 120V 60HZ
30A

1-PHASE

NEMA NO. L5-30P

DEC NO. 12-11193

40-INCH

CABINET

240V 50HZ

20A

("1

1-PHASE

NEMA NO. L6-20P

USED WITH H874B POWER CONTROLLER

DEC NO. 12-11192

120/208V AC 60HZ
30A

3-PHASE
WYE

USED WITH 881-A AND 881-C

5-WIRE
NEMA NO. L21-30P

POWER CONTROLLERS

60-INCH

CABINET

220-240/380-415V AC 50HZ
20A OR 16A
3-PHASE
WYE

USED WITH 881-B

5-WIRE, 4-POLE,
IEC 309

POWER CONTROLLERS

CX-1872B

Figure 2-11

Electrical Plug Configurations

2-15

2-16

INSTALLATION

2.5.2 Plugging in the Power Cord
A configured cabinet already has the drive power cords plugged into the controller. Only the ac power
cord from the controller needs to be plugged into an external power source.

CAUTION
Do not apply power to the power controller until you are ready to perform the drive checkout
procedures,

2.6

VOLTAGE SELECTION

It is important to ensure the RA90 disk drive has the proper voltage selected for your area. The voltage

selector is a slide switch capable of selecting 110 V/60 Hz or 220 V/50 Hz. Perform the following

steps:

WARNING
Ensure that both the controller and drive are operating at the same voltages and frequencies (120

Remove the cabinet rear access panel (Figure 2-4).

Refer to Figure 2-12 for voltage selector location.

Select the desired voltage by sliding the switch into the proper position using a non-conductive
pointed object.

v oA

V/60 Hz or 240 V/50 Hz). Use the following procedure to select the proper voltage.

Verify the ac circuit breaker on the power control unit is off.
Verify the circuit breaker on each disk drive is off.

Ensure the drive power cord is plugged into the power controller.

Plug the ac power cord from the power controller into an external receptacle.

Verify the voltage selector (Figure 2-12) is in the correct position for your area.

Switch on the ac circuit breaker on the power controller.

10. Switch the RA90 drive circuit breaker on (I) (Figure 2-13).

INSTALLATION

2-17

DRIVE
REAR

000

’

]

%993

120V

000%000%
oggg%o‘?
0,00 || 20,%,°0
f

)
\

Yop

OR
240V

102,
%009000
106,20 || 00,%;
0,0

9
"y

POWER
SUPPLY
CXO0-2135A

Figure 2-12

Voltage Selector

INSTALLATION

CIRCUIT
BREAKER

DRIVE
REAR

0093

%
U

~ On

GHEEN

;

LD R oK)

[

(

00
]

~ ~\ \TC

2-18

)

POWER

SUPPLY

)
105

(

/Q@/\O §
CXO-2134A

Figure 2-13

Drive Circuit Breaker Location

CAUTION
Never switch a drive circuit breaker off or unplug the drive before the Run light
on the

control panel goes off. HDA damage could occur.

operator

INSTALLATION

2.7

RA90 OCP CONTROLS AND INDICATORS

The following section describes the RA90 operator control panel (OCP) switches

to Figure 2-14 for locations of switches, LEDs, and the alphanumeric display.

2.7.1

2-19

and indicators. Refer

Functions of the OCP

The operator control panel is the interface to the RA90 disk drive. The OCP performs
the following
functions:
*

Selects and displays the unit address number.

Selects Run, Write Protect, Port A, and Port B.

Displays faults and error codes.

Selects tests in the test mode.

Controls the microcode update process.

Communicates with the RA90 master processor.

NOTE
The microcode update process is a service function and is not covered
in this

manual.

The OCP functions are executed by using the following features on the OCP. Refer to Figure
*

Six input switches (Run, Fault, Write Protect, Port A, Port B, and

Seven LED indicators (Ready, Run, Fault, Write Protect, Port A, Port B, and Test).

A four-character alphanumeric display.

A microcode update port.

2-14,

Test).

There are no physical in/out states for the RA90 front panel switches. Instead,
the logical state of the
switch changes each time you select an OCP switch. In addition, under normal operating
conditions,
the switch state is represented in the alphanumeric display by the use of a
single alphabetic character.
For example, selecting the Run switch causes an "R" to appear in the OCP display.
Chapter 3 has a more extensive explanation of the OCP and its functions.

2—20

INSTALLATION

FOUR-CHARACTER
ALPHANUMERIC
DISPLAY

g
y

UNIT NUMBER

"TEST
SWITCH

PORT A
|

PORT B

SWITCH

flw

SWITCH

FAULT
SWITCH

WRITE PROTECT
SWITCH

RUN

SWITCH

STATE LED

INDICATORS

CX0-2143A

Figure 2-14

2.8

RA90 OCP

POWER-UP RESIDENT DIAGNOSTICS

Do not select any front panel switches.

A sequence of drive-resident diagnostics run when power is applied to
the drive. The sequence consists
of hardcore tests with basic processor tests.
Successful completion of the hardcore tests is indicated

by a a series of OCP displays, as follows:

Blank (1 second).

[WAIT] (16 seconds).

[0000] (The drive unit number, if previously programmed,
is displayed. Otherwise, zeros are
displayed.)

INSTALLATION

2.8.1

2-21

Problems at Power-Up

If the drive experiences problems, as indicated by a front panel Fault light
(or if no front panel activity
occurs), enter the fault display mode in order to determine the drive problem.
To enter the fault mode, select the Fault switch. The OCP then displays a three-chara
cter fault code in
the format [E 00] (where 00 is a 2-digit fault code). (00) is a two-digit fault code.

If you have an error code (or if no front panel activity occurs), refer to Table
2—1 for possible solutions.
Error codes not found in Table 2-1 indicate problems beyond the scope of this
manual. Call DIGITAL
field service.
-

Table 2-1

OCP Error Codes

Error

Description

Drive write protected

Drive over-temperature

condition

Action
_
~

Disable write protection by the OCP Write Protect switch or turn off
software write protection.
Spin down and remove power from the drive. Ensure front filter

is clean and that room temperature is within recommended limits.
Call field service if filter or temperature has not caused an overtemperature condition.

Power supply overtemperature condition

Spin down and remove power from the drive. Ensure front filter

is clean and that room temperature is within recommended limits.

Call field service if filter or temperature has not caused an overtemperature condition.

Write protect error

Disable write protection by way of the OCP Write Protect switch, or

turn off software write protection.

2.9

ACCEPTANCE TESTING

Do not select any OCP switches.
After the hardcore diagnostics have run successfully, the drive automatically

enters an idle-loop
diagnostic test sequence. This test sequence is indicated by the front panel Test LED lighting.

Allow the drive to remain spun down and in idle-loop testing for 5 minutes. If
you do select the Run
switch at this time, the drive will not respond until it has finished its current idle-loop
routine.

If an error occurs during power-up or during idle-loop testing, the drive attempts to display
an error
code and a Fault light. Refer to Section 2.8.1 for possible solutions.

2.9.1

Operator Control Panel Lamp Testing

Next, perform an OCP lamp test. To perform an OCP lamp test, press the Test switch
and then select
the Fault switch. Deselect the Test switch.

2-22

INSTALLATION

2.9.2 Drive Testing Spun Down
The next step in the acceptance test process requires drive-re

sident diagnostics to run with the drive in

the spun-down state.

To invoke resident diagnostics while the drive is spun down:

Select the Test switch (Test LED lights).

Select the Write Protect switch.
*

The OCP displays [T 00].

Select the Write Protect switch again to start testing.

The drive is now running a sequence of resident diagnostics.

A number of displays are seen during the
execution of the diagnostics. Refer to Figure 2—15 for an
example of a normal test sequence.

pispLaY= [T

oispLay= [s]

o | (sTART)

DISPLAY = ic |

[of+ | (COMPLETE)

bispLaY= Is|

Jof2]

* INDICATES FLASHING DISPLAY
CX0-2195A

Figure 2-15

OCP Displays During Normal Testing

Allow drive diagnostics to run to completion before continu

ing acceptance testing. This will take about

2 minutes and terminate with [T 00].

If an error occurs, the drive displays an error code and a
Fault light. Refer to Section 2.8.1 for possible
solutions and operator actions.
Error codes not found in Table 2-1 indicate problems
beyond the scope of this manual. Contact
DIGITAL field service.

2.9.3 Drive Testing Spun Up
To spin up the drive:

De-select the Test switch (from the previous procedure).
The Test LED extmguishéé and the unit
address is displayed.

Select the Run switch.

An "R" appears in the OCP display, and the Run indicato
state as indicated by the front panel Ready indicator.

Then:

Select the Test switch (Test indicator lights).

r lights. Allow the drive to come to the ready

INSTALLATION

Select the Write Protect switch.
*

2-23

The OCP displays [T 00].

Select the Write Protect switch.

The previous steps invoke a sequence of 18 resident-diagnostic tests. The
tests check drive functions
in the following areas:
*

Processor

Servo bus

Positioner

Head select

Read/Write circuitry

Fault detection circuitry

Allow the tests to run to completion (about 4 minutes).
To halt testing:

Select the Port A/B switch.

Select the Test switch.

The drive exits the test mode and the OCP displays an "R" with

illuminated.

the Ready and Run indicators

The drive can now be placed on line assuming no problems have been

encountered.

NOTE

If an error occurs, reference Section 2.8.1 for possible solutions and operator

not found in Table 2-1 indicate problems beyond the scope of this manual.

field service. Report the displayed error code when requesting service.

2.10

actions. Error codes

Contact DIGITAL

PLACING THE DRIVE ON LINE

The following procedure assumes drive acceptance testing and cabling procedure

If not, refer to the appropriate sections for details.

2.10.1

s have been completed.

Programming the Drive Unit Address

You must set the drive unit address before the RA90 disk drive can be placed
on line. The unit address
can be set once power has been applied to the drive. The RA90 unit address
is programmable from 0
to 4094.

Use the following procedure to set the drive unit address. Figure 2-16 is
a flowchart of this procedure.
1.

Select the Test switch. Test LED lights and a unit address is displayed.

Select the Port A switch for the ones position. Position zero (hex) blinks.

Select the Port B switch. Position zero increments one through nine for
every time Port B is
selected.
|

Select the Port A switch for the tens position. Position one blinks.
5.

Select the Port B switch. Position one increments one through nine for
every time Port B is
selected.

Select the Port A switch for the hundreds position. Position two blinks.

2—24

INSTALLATION

Select the Port B switch. Position two increments one through nine for every
time Port B is

selected.

Select the Port A switch for the thousands position. Position three blinks.

Select the Port B switch. Position three increments one through four for every time
Port B is
selected.
|

10. Select the Test switch to exit.

At this point, the OCP prompts you to ensure that you want to change the

messages are scrolled through the OCP display:

unit address. The following

CHG UNT # [?7<N>] (Change unit number [?7<N>] )

If you elect not to change the unit address, select the Test switch a second time. The
to normal mode.

drive returns

If you elect to change the unit address:
1.

Toggle the Port B switch.

Result: [?7<Y>] is now displayed.

Select the Test switch. The old unit address is overwritten with the new address and
displayed
in the OCP, and the drive returns to normal mode.

INSTALLATION

@ORMAL MO@
DISPLAY—-—.I R l

DESELECT
PORT A AND
B TO SET UNIT
ADDRESS

DlSPLAYsIRI

INCREMENT
NUMBERS 0-9
BY SELECTING
PORT B
SWITCH

|21}

THE FOLLOWING
IS A SCROLLING
DISPLAY. TO
STOP DISPLAY,
SELECT RUN
SWITCH

SELECT
PORT A
SWITCH

,,,_,DlSPLAYsl 0 | o*l 0 ’ 0 I

SELECT TEST |
SWITCH (TEST
LED LIGHTS)

INCREMENT

NUMBERS 0-9
BY SELECTING
PORT B
SWITCH

mspLAY.l. lc lH l el

DisPLAY
= [ U | N | T 2]

DISPLAYzl AR

SELECT PORT
B SWITCH
TO TOGGLE

SELECT
PORT
A
SWITCH

(Y) OR (N)

SELECT

PORT
A

DISPLAY='0 'o |e l o*l

INCREMENT
NUMBERS 0-9
BY SELECTING
PORT B
SWITCH

{

TO SAVE OLD
ADDRESS, SELECT
[N] AND EXIT BY

msPLAY=| o*l 0 l 0 l al

SELECT

SELECTING TEST

SWITCH

INCREMENT
NUMBERS 0-4
BY SELECTING
PORT B
SWITCH

oisPLAY
= | 7 | [ | N]

o'f o]

;

DisPLAY
= | 2 | [ | v'|
* INDICATES FLASHING READOUT

Figure 2-16

TO SAVE NEW
ADDRESS,
SELECT [Y]
AND EXIT BY
BY SELECTING
TEST SWITCH

PORT A

SWITCH

DISPLAY=| 0 | 0

2-25

Unit Address Selection Flowchart

NOTE
The unit address is written to EEPROM and is not lost if the drive loses power.

CXO-2138A

3
OPERATING INSTRUCTIONS
3.1

INTRODUCTION

Functions and uses of the operator control panel (OCP) are covered in this chapter. Also included are
functional flowcharts intended to aid the user when operating the RA90 disk drive.

3.2

FUNCTIONS OF THE OCP

The operator control panel is the interface to the RA90 disk drive. Figure 3—1 shows the RA90 OCP.
The OCP performs the following functions:

Selects and displays the unit address number.

Selects Run, Write Protect, Port A, and Port B.

Displays faults and error codes.

Selects tests in the test mode.

Controls the microcode update process.

Communicates with the RA90 master processor.

NOTE
The microcode update process is a service function and is not covered in this manual.

The listed functions are executed by using the following features on the OCP. Refer to Figure 3-1.
e

Six input switches (Run, Fault, Write Protect, Port A, Port B, and Test)

Seven LED indicators (Ready, Run, Fault, Write Protect, Port A, Port B, and Test)

A four-character alphanumeric display

A microcode update port

There are no physical in/out states of the OCP switches. Instead, the logical state of the switch is
changed each time a switch is selected, similar to the way a calculator works.

3-1

3-2

OPERATING INSTRUCTIONS

FOUR-CHARACTER
ALPHANUMERIC

DISPLAY

J'/

TM~

"""

:;X«

UNIT NUMBER

e
e

TEST
SWITCH

PORT B

SWITCH

FAULT
SWITCH

WRITE PROTECT
SWITCH

RUN
SWITCH

STATE LED
INDICATORS

CX0-2143A

Figure 3-1

3.3

RA90 OCP

OPERATING MODES

The RA90 operates in three set-up modes: normal, fault display, and
test. The following sections
describe the functions of each of these modes.

OPERATING INSTRUCTIONS

3.3.1

3-3

Normal Mode Setup

The normal mode setup is the usual operating mode of the RA90. No Fault or Test LEDs are lit. The
switch states are shown in the OCP display, and the LED indicators show the state of the drive relative
to the controller.
|

Switch selection during normal operation usually consists of the Run switch, the Write Protect switch
(for normal write protecting), and the Port A or B switch.

During normal operations:

Selecting the Run switch causes an "R" to appear in the OCP display and the drive to spin up.
Additionally, the Run indicator lights. The Ready indicator lights once the drive is up to speed.

Selecting the Port A switch or the Port B switch displays an "A" or "B" in the OCP display and
logically makes the drive available to the controller.

Selecting the Write Protect switch logically write protects the drive and lights the Write Protect

indicator.
*

Selecting the Fault switch (without a fault indication) causes a 2-second OCP lamp test.

Selecting the Fault switch (with a fault indication) displays an error code. See Section 3.3.2.

Selecting the Fault switch a second time (with a fault indication) clears the fault.

Selecting the Test switch (with Port A or B selected) causes a 2-second display of the unit address.

Selecting the Test switch (i;vithout Port A or B selected) causes the drive to enter the test mode.

3.3.2 Fault Display Mode Setup
The fault mode can only be entered if the Fault indicator is lit. Otherwise, selecting the Fault switch
causes a 2-second OCP lamp test.
To enter the fault display mode, select the Fault switch. An error code is displayed in the format shown
in Figure 3-2.

DISPLAY =

Figure 3-2

CX0-2190A

Fault Display Example

To exit the fault display mode and clear the fault, select the Fault switch a second time.
NOTE
Hard faults will not clear.

Figure 3-3 is a fault display mode flowchart.

3—4

OPERATING INSTRUCTIONS

@ORMAL MODB
DlSPLAYaI alwlA |B|

FAULT
INDICATION
ON DRIVE
?

SELECT
FAULT
SWITCH

OCP LAMP

SELECT

FAULT
SWITCH

’DISPLAYal E l

{fg;c)

lo | F l

SELECT

FAULT
SWITCH

FAULT

CLEARS
DRIVE
RETURNS TO

@ORMAL MOC@'(
*NOTE: ANY COMBINATION OF LEGAL ALPHANUMERIC ERROR CODES (HEX).

CX0-2191A

Figure 3-3

Fault Mode Flowchart

OPERATING INSTRUCTIONS

3-5

3.3.3 Test Mode Setup
You must enter the test mode to set the RA90 unit address or to run resident diagnostic tests. In this
mode, Port A and B switches have the function of selecting both the unit address numbers and test
numbers. In addition, the port switches are used to abort running diagnostics. The Write Protect switch

starts the tests and the Port A or B switches stop the selected tests.

The test mode is characterized by three displays. Figure 3—4 shows an OCP after test selection is
made. Figure 3-5 shows a display while the test is running,
In addition, two flowcharts have been included as aidsin settmg the unit address (Figure 3—6) and

selecting and running tests (Figure 3-7).

DISPLAY = l T l

l 0 l 1*!

* INDICATES FLASHING DISPLAY
CXO0O-2192A

Figure 3-4

RA90 Test Display

pispLAY= [T

pispay=

[o]1]sTART)

[s|

]

pisLay= [c]

Jo[1]compLere)

pispLAY= |T|

o | 1‘|

* INDICATES FLASHING DISPLAY
CXO0-2137A

Figure 3-5

Running Test OCP Display

3.3.4 Programming the Drive Unit Address
The unit address can be set for the RA90 once power has been applied to the drive. The unit address
is programmable from 0 to 4094.

Use the following procedure to set the drive unit address. Figure 3-6 is a flowchart of this procedure.
1.

Select the Test switch. Test LED is lit and a unit address is displayed.

Select the Port A switch for the ones position. Position zero (hex) blinks.

Select the Port B switch. Position zero increments one through nine for every time Port B is
selected.

Select the Port A switch for the tens position. Position one blinks.

3-6

OPERATING INSTRUCTIONS

Select Port B switch. Position one increments one through nine for every time Port B is selected.
Select the Port A switch for the hundreds position. Position two blinks.

Select the Port B switch. Position two increments one through nine for every time Port B is
selected.

Select the Port A switch for the thousands position. Position three blinks.

Select the Port B switch. Position three increments one through four for every time Port B is
selected.

10. Select the Test switch to exit.
The OCP prompts you to ensure that you want the unit address changed. The following messages are
scrolled through the OCP display:

CHG UNT # [7<N>] (change unit number [7<N>] )
»

If you do not want to change the unit address, select the Test switch a second time. The drive
returns to normal mode.

If you want to change the unit address:
1.

Toggle Port B.

Result: [7<Y>] is now displayed.

Select the Test switch. The old unit address is overwritten with the new address and displayed
in the OCP, and the drive returns to normal mode.

NOTE
The unit address is written to EEPROM and is not lost if the drive loses power.

3.3.5 Test Selection from the OCP
Select and run resident diagnostics from the OCP to complete acceptance testing. Use the following
procedure to select and run diagnostics from the OCP. Refer to Figure 3—-7 while performing this
procedure.
1.

Power up the drive (if not done previously).

Select the Test switch. (Test defaults to zero; no other operator action is required.)

Select the Write Protect switch.

Select the diagnostic to run by using Port A and B switches. See the test mode flowchart

(Figure 3-7).
Start the test by selecting the Write Protect switch.
Stop the test by selecting either the Port A or Port B switch.
7.

Select the Test switch to exit the test mode.

OPERATING INSTRUCTIONS

(Gomwa wooe)

DISPLAY.-._l R l

NUMBERS 0-9
BY SELECTING
PORT B
SWITCH

DESELECT
PORT A AND
B TO SET UNIT
ADDRESS

PORT
A

SWITCH |

DISPLAYglRl

INCREMENT

1218

D;SPLAYal 0 l o‘l 0 I ol

SELECT TEST
SWITCH (TEST

INCREMENT

LED LIGHTS)

NUMBERS 0-9
BY SELECTING
PORT B
SWITCH

SELECT
PORT A

SWITCH

SELECT
PORT A
SWITCH

mspLAv,lo o | o I a*l

3-7

THE FOLLOWING
IS A SCROLLING
DISPLAY. TO
STOP DISPLAY,
SELECT RUN
SWITCH

pispLAY
= [« | ¢ | w ] e |

DISPLAY=IU ' Nl‘rl ?|
oispLaY
= 7 | [ | N

SELECT PORT
B SWITCH
TO TOGGLE
(Y) OR (N)

TO SAVE OLD

ADDRESS, SELECT

INCREMENT
NUMBERS 0-9
BY SELECTING
PORT B
SWITCH

DISPLAYal oo

SELECT

o] o |

INCREMENT
NUMBERS 0-4
BY SELECTING
PORT B
SWITCH

'SELECT
TEST

DISPLAY=| o | o

o'f of

DISPLAYsl ? l { l N*I

SWITCH

SELECT [Y]

AND EXIT BY
BY SELECTING
TEST SWITCH

pisPLAY
= | 7 | [ | v']

* INDICATES FLASHING READOUT
Figure 3-6

Unit Address Selection Flowchart

TO SAVE NEW
ADDRESS,

PORT
A

SWITCH

[N] AND EXIT BY
SELECTING TEST
SWITCH

CX0-2138A

3-8

OPERATING INSTRUCTIONS

GORMAL MOD@
pisrLay= R |

| A| 8|

SELECT PORT
SWITCHES TO
DESELECT
PORTS(S)

DlSPLAYaIal

SELECT PORT A
SWITCH (MSB

BEGINS FLASHING)

DlSPLAY=| - l

INCREMENT
NUMBERS 0-9
BY SELECTING

PORT B
SWITCH

SELECT TEST
SWITCH (TEST
LED LIGHTS)

SELECT WRITE
PROTECT SWITCH
(TEST STARTS)

Y
SELECT WRITE
PROTECT SWITCH

DlSPLAYalT'

|c]e|

SELECT PORT
A SWITCH
(LSD BEGINS
FLASHING)

pispLay= [ T |

l e*l 1 |

DISPLAY = l s |

I 0 l 1 l (START)

o] | (COMPLETE)

mspmnl c|
DISPLAY = l T I

| o | o’l

l 0 l 1"|

DIAG CAN BE
RESTARTED BY
SELECTING W/P
OR EXITED BY
SELECTING
TEST SWITCH

INCREMENT
NUMBERS 0-9
BY SELECTING
PORT B
SWITCH

* INDICATES FLASHING READOUT

Figure 3—7

Test Select Flowchart

CXO-2139A

4
DIAGNOSTICS AND UTILITIES
4.1

GENERAL INFORMATION

General information concerning drive-resident diagnostics and acceptance testing procedures are
covered in this chapter.

4.2

DRIVE-RESIDENT DIAGNOSTICS

Three hardware areas are covered during drive-resident diagnostic testing. They are:
*

Hardcore (CPU, ROM, RAM, SCI, and TIMER)

Logic (processor board, servo board, and PCM board)

Functional (guardband detect, seek/timing, and read/write)

Drive-resident diagnostics are invoked under four conditions:
*

Power-up or master processor reset

External init (SDI command)

Operator control panel (OCP) test mode selection

Functional firmware sequences (idle loop)

4.3

POWER-UP RESIDENT DIAGNOSTICS

At power-up or reset of the master processor, drive-resident diagnostics run. Upon successful

completion of the tests, the drive displays:

BLANK (1 second).

[WAIT] (16 seconds).

[0000] (The drive unit address, if set, is displayed. Otherwise, zeros are displayed.)

These tests run without manual intervention in the following order:
Master CPU test
*

Master ROM test

Master RAM test

4-2

DIAGNOSTICS AND UTILITIES

Master timer test

L 4

Servo data bus loopback test

Head select test

This sequence is a power-up function and tests the basic processor functions. If a problem occurs
during power-up, the drive attempts to display an error code.

However, should any of the basic processor funcnons fail without an error code being displayed,
perform the following steps:
Ensure the OCPis seated properly.

Check ac power at the outlet.

Check to ensure the green LED at the rear of the power supply is lit (Figure 4-1).
Ensure the power supply is properly seated.

Check the circuit breaker (CB1) on the back of the power supply.
Ensure that drive FRUs are seated properly.

If the previous actions do not solve the problem, contact DIGITAL field service.

DIAGNOSTICS AND UTILITIES

CIRCUIT
BREAKER

GREEN
LED
(POWER OK)

DRIVE
REAR

4-3

POWER

SUPPLY

CXO-2134A

Figure 4-1

4.4

Power Supply Indicator

TEST SELECTION FROM THE OCP

This section documents drive confidence testing.
Run the following resident diagnostics from the OCP in the following order:
1.

Test T 00: Drive spun down.

Test T 00: Drive spun up.

4-4

DIAGNOSTICS AND UTILITIES

W
oA

Select the diagnostic to run by using Port A and B switches (Figure 4-2).

Reinitiate the tests by selecting the Write Protect switch again. Select the Test switch to exit the

Power up the drive.

To run resident diagnostics from the OCP, use the following procedure. (See Figure 4-2.)

Select the Test switch.

Select the Write Protect switch to initiate diagnostic mode.

Start the test by selecting the Write Protect switch.

Stop the test by selecting the Port A switch.
test mode.

DIAGNOSTICS AND UTILITIES

GORMAL MOD@

SELECT PORT A
SWITCH (MSB

oiseay
[ =| | af 8]

SELECT PORT
SWITCHES TO
DESELECT
PORTS(S)

oiseav=|r|

BEGINS FLASHING)

DISPLAY:IT |

Y
|

INCREMENT
| NUMBERS 0-9
BY SELECTING
PORT B

SWITCH

SELECT TEST
SWITCH (TEST
LED LIGHTS)

SELECT WRITE

PROTECT SWITCH
(TEST STARTS)

Y
SELECT WRITE
PROTECT SWITCH

D!SPLAY*lTl

Ielol

SELECT PORT
A SWITCH
(LSD BEGINS

| e"‘l 1 l

DISPLAY = l S l

| 0 l 1 l(START)
(COMPLETE)

DISPLAY =

DISPLAY = I T l

l 0 I 1’|

FLASHING)

pispay= [ T |

|o | o]

)

DIAG CAN BE
RESTARTED BY
SELECTING W/P
OR EXITED BY

SELECTING

TEST SWITCH

INCREMENT
NUMBERS 0-9
BY SELECTING
PORT B
SWITCH

* INDICATES FLASHING READOUT

Figure 4-2

Test Selection Flowchart

CXO-2139A

4-5

Index
A

Acceptance testing, 2-21
Add-on
chassis installation, 2-8
drive order, 2-7
Add-on installation, 2-2
cabinet preparation, 2—4
unpacking add-on drive, 2-2
Address selection from the OCP, 2-23

Idle loop, 1-4

B
Backup procedures, 1-4

D
Data backup, 1-4

Digital Standard Architecture, 1-1

Drive description, 1-1
Drive-resident diagnostics, 41
Drive testing
spun down, 2-22
un up, 2-22

DSA compatibility, 1-1
Dual-port configuration, 1-3

E
Electrostatic discharge, 1-5
Electrostatic protection, 1-5
guidelines, 1-5
ESD, 1-5

F
File duplication backup, 1-4
Front access panel removal, 2-5

G
Grounding, static protection, 1-5

H
Hardware maintainability, 1-2
HDA, 1-1

J
Journaling backup, 1-4

Maintenance strategy, 1-6

O
OCP, 1-3
controls and indicators, 2-19
functions, 2-19
lamp testing, 2-21
OCP functions, 3-1

Operating modes, 3-2
fault display mode setup, 3-3

normal mode setup, 3-3
test mode setup, 3-5
Operating temperature, 1-5
Operator control panel

See OCP

P
Placing drive on line, 2-23
Power-up
diagnostics, 1-4
problems, 2-21
resident diagnostics, 2-20
Power-up resident diagnostics, 4-1
Preventive maintenance, 1-2
Programming drive unit address, 3-5

R
RA90 specifications, 1-7
Rear access panel removal, 2-5
Recommended operating temperature, 1-5
Resident diagnostics, 1-2, 1-4
Resident error log, 1-2

index

SDI and power cable installation, 2-8
Site preparation and planning, 2-1
environment, 2-1
floor loading, 2-1
operating temperature and humdity, 2-2
power requirements, 2-1
thermal stabilization, 2-1
Subsystem configuration, 1-2

T
Temperature, operating recommendations,
1-5
Test selection from the OCP, 3-6, 4-3

U
User precautions, 1-4
User recommendations, 1-4

vV
Voltage selection, 2-16