quantum 81-45528 Q200 Series Technical Reference Manual 1987 free download

File name 81-45528_Q200_Series_Technical_Reference_Manual_1987.pdf

Q200 SeriesTM Intelligent Disk Drives Technical Reference Manual For Q250, Q280 Disk Drives Q200 SERIES tm INTELLIGENT DISK DRIVES Q250jQ280 DISK DRIVES Technical Reference Manual Publication No. 81-45528 REV A PREFACE This manual contains technical reference information describing the Q250 and Q280 rigid disk drives. Information is intended for technicians and engineers evaluating or maintaining the drives, or integrating them into systems. Quantum reserves the right to make changes and/or improvements to its products without incurring any obligation to incorporate such changes or improvements in units previously sold or shipped. Additional information on the Q250 and Q280 is given in the following~manuals: Publication No. Title Quantum 81-45233 Q250/Q280 Disk Drives. OEM Manual Quantum 81-45416 Q200 Series Programmer's Manual ANSI X3.131-1986 Small Computer System Interface (SCSI) Quantum publications may be requested from your Quantum Sales Representative, or may be ordered from Quantum in the same manner as spare parts. Publication No 81-45528 Rev. KL587 UL/CSA/VDE UL recognition granted under File No. E78016 CSA certification granted under File Nos. LR496896-8 and LR496896-11 VDE certification granted per File No. 11342-3250-1002 WARRANTY Model Q250 and Q280 disk drives are warranted against defects in material and workmanship for a period of one year from date of shipment. The warranty includes parts and labor. This is a limited ~arranty and further details can be obtained from your Quantum sales representative. All requests for service should be directed to the Quantum service center in your area. PATENTS The product described herein is covered by u.S. Patent No. 4,538,193, and is the subject of allowed pending patent applications from which u.S. Patents are expected to issue in 1987. Copyright 1987 Quantum Corporation. All rights reserved. Q200 Series and DisCache are trademarks of Quantum Corporation. AIRLOCK is a registered trademark of Quantum Corporation. Printed in U.S.A. ii TAB L E o F CON TEN T S PREFACE . . ii SECTION 1. INTRODUCTION . . . . 1-1 1.1 Features . . . . . . . . . . . . . . 1-1 1.2 Logic Conventions . . . . . . . . . . 1-2 SECTION 2. PRINCIPLES OF OPERATION . . 2-1 2.1 Head Disk Assembly (HDA) . . . . . . . . . ... 2-1 2.1.1 Base casting Assembly. . . . . . . ... 2-1 2.1.2 Disk Stack Assembly. . . . . ...