PRIAM FOURTEEN INCHWINCHESTERDISK DRIVES User manual

IPRifAM
FOURTEEN INCH
WINCHESTER
DISK DRIVES
OEM/SERVICE MANUAL
Mt\RCH 15 J 1982
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:~ R ELI MIN ARY
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.:REV~SED September 20, 1982

PRIAM
14-INCH WINCHESTER DISC DRIVES
FIELD SERVICE MANUAL
~RCH 15 J 1982
* * * * * * *
PRE LIM I NARY
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REVISED September 20, 1982

PRIAM 14" Disc Drives
PREFACE
Field Service Manual
December 21, 1981
This manual has been prepared for the benefit of field service personnel
who are directly involved with the installation and maintenance of PRIAM
14-inch disc drives. It may also contain information helpful to the OEM
manufacturer of products containing these drives.
In producing this manual, PRIAM has sought to provide enough information to
enable the following field operations to proceed smoothly and efficiently:
Preparation, including provision for compatibility of related
equipment, proper power, and cabling.
Installation and initial testing.
Fault isolation to the assembly level.
Assembly replacement.
The manual contains enough theory of operation to give the reader a general
background on how the drive works. This is intended solely to provide a
context for the testing and troubleshooting procedures. It is not intended
that the manual should enable the reader to do detailed intra-board
troubleshooting or board repair.
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PRIAM 14" Disc Drives
TABLE OF CONTENTS
Section
Field Service Manual
December 21, 1981
Page
1
1 • 1
1
.2
1 .3
1 .3. 1
1.3.2
1 .4
1 .4. 1
1
.4.2
1 .4.3
1 .4.4
2
2. 1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
2.10
2. 11
2.12
2.13
3
3.1
3.2
3.3
4
4.1
4.2
4.3
4.4
4.5
4.6
4.7
GENERAL INFORMATION
FEATURES
SPECIFICATIONS
CONFIGURATION
Physical Configuration
Functional Organization
OPTIONS
Interface Options
Interface Cables and Terminators
Power Supplies and Cables
Mounting Hardware
INSTALLATION
UNPACKING
VISUAL INSPECTION
JUMPERS
SWITCH SETTINGS
MOUNTING
GROUNDING
CABLING
UNLOCKING
PERFORMANCE CHECK
LOCKING
REPACKING
STORAGE
SHIPPING
OPERATING PROCEDURES
SPINDLE AND HEAD LOCKS
POWERING UP/DOWN
PERFORMANCE CHECK
ASSEMBLIES
OVERVIEW
HEAD DISC ASSEMBLY
PHOTOCELL ASSEMBLY
MOTOR CONTROL ASSEMBLY
MAIN PCB
POWER SUPPLY
FRAME ASSEMBLY
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PRIAM 14" Disc Drives
Section
Field Service Manual
December 21, 1981
Page
5
5.1
5.2
5.3
5.4
5.5
5.6
5.7
FORMATS
OVERVIEW
SERVO SURFACE
SERVO PATTERN
SERVO SURFACE
SERVO PATTERN
DATA SURFACE
SECTOR FORMAT
NON-QUADRATURE
NON-QUADRATURE
QUADRATURE
QUADRATURE
6 ELECTRICAL CIRCUIT OPERATION
6 • 1 OVERVIEW
6.2 DRIVE SELECTION
6.3 POWER UP/DOWN SEQUENCES
6.4 MOTOR CONTROL CIRCUITRY
6.5 SEEK MODES
6.6 SERVO CIRCUITS
6.7 DATA READ/WRITE FUNCTIONS
6.8 PLO/VFO
6.9 MICROPROCESSOR FLOW CHARTS
7TROUBLE SHOOTING PROCEDURES
7.1 FIELD ADJUSTMENTS AND PREVENTIVE MAINTENANCE
7.2 GENERAL INSPECTION
7.3 STATUS AND ERROR CODES
7.4 SYMPTOMS AND CAUSES
7.5 SEEK ERRORS AND FAULT CONDITIONS
8ASSEMBLY REPLACEMENT PROCEDURES
8.1 PRECAUTIONS
8.2 HEAD DISC ASSEMBLY
8.3 PHOTOCELL ASSEMBLY
8.4 MOTOR CONTROL ASSEMBLY
8.5 MAIN PCB
8.6 POWER SUPPLY
9 SPARE PARTS LIST
10 PRIAM INTERFACE
10.1 OVERVIEW
10.2 CONNECTORS AND PIN ASSIGNMENTS
10.3 INTERFACE SIGNAL DESCRIPTIONS
10.4 INTERFACE DC CHARACTERISTICS
10.5 INTERFACE TIMING
10.6 USER-ACCESSIBLE REGISTERS
10.7 COMMANDS
10.8 REGISTER BIT DEFINITIONS
11 SMD INTERFACE
11.1 OVERVIEW
11.2 CONNECTORS AND PIN ASSIGNMENTS
11.3 INTERFACE SIGNAL DESCRIPTIONS
11.4 INTERFACE DC CHARACTERISTICS
11.5 INTERFACE TIMING
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