HP 9121D/S User manual

HP 9121 and 9122 DIS
Section I ..
Section II .
Section III .
Section IV .
Section V .
Section VI .
Section VII.
Section VIII
Section IX .
Section X .
Section XI .
Part No. 5957-6566
For use
with binder No. 9282-0683
. . . . . . . Product Information
. Environmental/Installation/PM
· .Configuration
·Troubleshooting
. Diagnostics
· . .Adjustments
· . . Peripherals
·Replaceable
Parts
· .... Diagrams
· .... Reference
. Service Notes/IOSMs
Printed in USA
September. 1985

NOTICE
This Handbook is intended only for service personnel trained in
its use by Hewlett-Packard. It is designed as a quick reference
guide to commonly used service information. The information
contained here is highly condensed from other manuals and this
volume is not intended to be a substitute, but rather a supplement
to those manuals.

TABLE OF CONTENTS
Section I
PRODUCT INFORMATION
Introduction.
[ 1]
[2]
[3]
[4]
Technical Specifications
Accessories.
Service Kits ....... .
Section II
ENVIRONMENTAL/INSTALLATION/PM
[ 1]
[2]
[3]
EnVironmental Considerations
Installation Considerations.
Preventive Maintenance ....
Section III
CONFIGURATION
[1] Address Configuration ..... .
Section IV
TROUBLESHOOTING
[ 1]
[2]
Troubleshooting Tree
Disc
Interchanging .
Section V
DIAGNOSTICS
Page
1-1
1 -1
1-1
1-2
2-1
2-1
2-1
. .... 3-1
4-1
4-2
[1] Selftests .............................. 5-1
Section VI
ADJUSTMENTS
There are no suggested field adjustments.

Section VII
PERIPHERALS
This section intentionally left blank.
Section VIII
REPLACEABLE PARTS
[ 1]
[2]
Exchange Assemblies.
Non-Exchange Assemblies
Section IX
DIAGRAMS
This section intentionally left blank.
Section X
REFERENCE
For information on the drive mechanism. refer to the tabbed
Reference
Section of this handbook.
Section XI
Page
8-1
8-1
SERVICE NOTES/IOSMs
. . . . . . . . . . . . . 11-1

HP 9121/22 DIS
SECTION I
PRODUCT INFORMATION
[1] INTRODUCTION
The HP 9121D/S and HP 9122D/S Disc Drives are random access data
storage devices. The HP 9121 uses a single-sided 3 1/2-inch disc
drive: the HP 9122 uses a double-sided drive. 5 and D denote
single-drive and dual-drive configurations, respectively.
[2] TECHNICAL SPECIFICATIONS
POWER REQUIREMENTS
Voltage
(selected by rear
panel sWitch)
Frequency
Power consumption
(max)
[3] ACCESSORIES
DESCRIPTION
3 1/2-inch flexible
discs (pkg. of ten):
Single-sided
Double-sided
HP-I6 cables:
1 metre
2 metres
4
metres
0.5 metres
86-125VAC
195-250VAC
48-66Hz
671,1
PART NUMBER
92191A
92192A
10833A
108336
10833C
10833D
1-1

HP 9121/22 DIS
[4] SERVICE KITS
PART NUMBER
09121-69510
09121-69521
09121-68511
09121-61611
09121-61612
DESCRIPTION
Controller Board
3 1/2 in .. Single-sided Drive
Fan Assembly
Ribbon Cable assembly
DC power cable
Necessary parts to be added to the HP 9121 DIS FSI to support the
HP 9122 DIS:
09122-69501
09114-69511
Controller Board
3
1/2-in .. Double-sided drive
1-2

HP 9121/22 D/S
SECTION II
ENVIRONMENT AL/INST ALLA TlON/PM
[1] ENVIRONMENTAL CONSIDERATIONS
Operating Limits
Temperature:
Altitude:
Non-operating Limits
(Storage and Transit)
10· C to 40· C(50· F to 104· F)
with maximum wet bulb temperature
not to exceed 29· C(85· F)
o to 4572 m (0 to 15,000 ft)
Temperature: -40·C to 60·C(-40· to 140· F)
Altitude: -304 to 15240 m (-1000 to 50,000 ft)
[2] INST ALLATION CONSIDERATIONS
Installation is normally a customer responsibility. Refer to the
configuration section for information on HP-IB address settings.
Fuse: 115 VAC 1A 250 VAC normal blow 2110-0001
[3] PREVENTIVE MAINTENANCE
No preventive maintenance is required.
2-1

HP 9121/22 D/S
SECTION III
CONFIGURATION
[1] ADDRESS CONFIGURATION
Configuration consists of setting the HP-IB address only.
Configure the unit for the desired address as shown below. See
the Self test section for information on self test selection.
9 12.1: Up for normal operation.
Up-Down-Up for Uoer
Confidence Te.t
I~~~~I ~
• Test
9122: Switch •• 1,2,4 Hl.ct HP-IB addr_
Test s"ltch II used "hen lelectln9 selftest.
(see
Dlo<,JnOltJc sectIon.)
HP-IB Address Switch Configuration
3-1

HP 9121/22 DIS
SECTION IV
TROUBLESHOOTING
[1] TROUBLESHOOTING TREE
The HP 9121 and HP 9122 have unique self test procedures as
described in the Diagnostic section. The HP-85 Amigo protocol
diagnostics will work with the HP 9121, but not with the HP 9122.
The Power-on 5elftest can be used to isolate the control PCA or
the drive mechanism as follows.
Power on
without disc(s)
yes
Isolate problem
with
&electable test&
4-1
If wles are OK:
replace
Controller PCA

HP 9121/22 D/S
[2] Disc Interchanging
It is possible for a drive to pass all READ/WRITE tests, yet fail
when reading a disc which has been initialized or written on by
another drive. This type of failure can be caused by misalignment
of the drive mechanism or of the PLL frequency.
To determine which drive is misaligned, test with a disc that has
been
initialized and written on by a known-good drive.
4-2