Sign In
Upload
Download
Table of Contents
Contents
Add to my manuals
Delete from my manuals
Share
URL of this page:
HTML Link:
Bookmark this page
Add
Manual will be automatically added to "My Manuals"
Print this page
×
Bookmark added
×
Added to my manuals
Manuals
Brands
Quantum Manuals
Storage
Q250
Technical reference manual
Quantum Q250 Technical Reference Manual
Q200 series intelligent disk drives
Hide thumbs
1
2
3
Table Of Contents
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
page
of
79
Go
/
79
Contents
Table of Contents
Bookmarks
Table of Contents
Preface
Table of Contents
Features
Logic Conventions
Principles of Operation
Exploded View
Disk Stack Assembly
Rotary Positioner Assembly (Actuator)
Headstack Assembly
Automatic Actuator Lock (AIRLOCK)
DC Drive Motor
Air Filtration
Head Disk Assembly (HDA)
Base Casting Assembly
Inside View of Drive, Showing Air Filtration
Drive Electronics
Disk Format
Simplified Explanation--Block Diagram
Disk Format: Wedges, Sectors, and Tracks
Electronics Block Diagram
SCSI Bus Physical Interface
SCSI Bus Signal Descriptions
Typical Circuit of a Signal Line
SCSI Bus
SCSI Bus Timing
SCSI Bus Timing Diagram
Power Requirements
Shorting Plug Options
Drive Startup Current Profile
General PCB Layout; Plug, Terminator and
Flex Circuit
PCB Functional Elements
Power-On-Reset (POR) and Warm Reset
Motor Control Circuit
Electronic Return Spring
S080 SCSI Bus Controller
Servo Control, AMC and Servo AGC
Servo AMC and ADC Circuit Waveforms
Actuator Positioning Circuit
Read/Write Circuit
Read Circuit Waveforms
FYLO Timing Controller IC, and Xtal Oscillators
DICEY Data Controller IC
DICEY Block Diagram
Microprocessor and EPROM
Power-Up Sequence/Recalibration
Read Command Sequence
Write Command Sequence
Power-Up Sequence
Read Command Sequence
Write Command Sequence
PCB-7 Engineering Drawings
Printed Circuit Board Parts Locations (PCB-7)
Schematic, PCB-7, Sheet
Printed Circuit Board Parts Locations (PCB-9)
Schematic, PCB-9, Sheet
Applications
Special Considerations
REQ/-ACK Handshake
Q250/Q280 Target Sends Data
Hints for Software Driver Writers
Buffer Full and Empty Ratios
Errors and Media Defects
Errors
Allocating Replacement Sectors
In-Line Sparing of Defective Sectors
In-Line Sparing Overflow of Defective Sectors
Creating the Defect Lists
Sparing of Field-Found Defective Sectors
Updating the Drive Using the Defect Lists
Grounding, Electrostatic Discharges, and EMI
Maintenance
Maintenance Precautions
Level 1 Maintenance
Level 2 Maintenance
Connector Maintenance
PCB Waveforms and Techniques
Special Test Equipment
Techniques and Waveform Descriptions
5.5.3 Test Connector J5 Signals
Section Parts Lists
Spare Parts List
Reference Parts List(S)
Advertisement
Quick Links
Download this manual
Q200 Series™
Intelligent Disk Drives
Technical Reference Manual
For Q250, Q280
Disk Drives
Table of
Contents
Previous
Page
Next
Page
1
2
3
4
5
Advertisement
Table of Contents
Need help?
Do you have a question about the Q250 and is the answer not in the manual?
Ask a question
Questions and answers
Subscribe to Our Youtube Channel
Related Manuals for Quantum Q250
Storage Quantum Q2000 User Manual
8" media fixed disk drive (54 pages)
Storage Quantum Q2080 Product Description
8" media fixed disk drive (99 pages)
Storage Quantum QXS-312 Site Planning Manual
Qxs-3/4/6 series hybrid storage (54 pages)
Storage Quantum QXS-424 Drive Rackmount Install Manual
Qx and qxs 12- and 24 series (21 pages)
Storage Quantum QXS 12G Series Site Planning Manual
12, 24, and 84-drive systems (58 pages)
Storage Quantum QX Series Setup Manual
(225 pages)
Storage Quantum QX Series Getting Started Manual
(14 pages)
Storage Quantum QXS-448 Drive Rackmount Install Manual
Qxs 48 series (25 pages)
Storage Quantum QX Series Getting Started Manual
(11 pages)
Storage Quantum StorNext QD7000 Replacing Manual
A power supply unit (psu), expansion unit (8 pages)
Storage Quantum StorNext QD7000 Replacing Manual
A fan in base system (13 pages)
Storage Quantum StorNext QD7000 Replacing Manual
A fan in expansion unit (13 pages)
Storage Quantum StorNext QD7000 Installation Manual
Base system/expansion unit (144 pages)
Storage Quantum QXS G2 Series Hardware Installation And Maintenance Manual
12, 24, and 84-drive systems (246 pages)
Storage Quantum StorNext QM1200 Replacing Manual
Expansion unit, a power-fan canister (7 pages)
Storage Quantum StorNext QM1200 Manual
Replacing a drive of base system (9 pages)
Related Products for Quantum Q250
Quantum Q2000
Quantum Q2080
Quantum QXS-448
Quantum QXS-424
Quantum QXS-656
Quantum QDFLD25-***GUH1 Series
Quantum QDFLD25-128MUH1
Quantum QDFLD25-***GUH1I Series
Quantum QDFLD25-1GUH1
Quantum QDFLD25-4GUH1
Quantum QDFLD25-16GUH1I
Quantum QXS G2 Series
Quantum QXS-G2-312
Quantum QXS-G2-424
Quantum QXS-G2-484
Quantum StorNext QS1200
This manual is also suitable for:
Q280
Table of Contents
Print
Rename the bookmark
Delete bookmark?
Delete from my manuals?
Login
Sign In
OR
Sign in with Facebook
Sign in with Google
Upload manual
Upload from disk
Upload from URL
Need help?
Do you have a question about the Q250 and is the answer not in the manual?
Questions and answers