Controller; Winchester Drive - Bering 3000 Series User Manual

1.2.1 Controller
1-4
GENERAL INFORMATION
The controller module may consist of three printed circuit boards
(PCB), namely the main PCB, the multi-port PCB, and the front panel PCB.
MAIN PCB (Standard): The main PCB is mounted above the floppy
drive. It is a dual microprocessors based disk controller with built-in
error correcting (ECC) hardware for the Winchester drive operations. It
receives and executes command from the HP computer through the HP-IB ,
accesses data from the drives, and executes local commands.
MULTI-PORT PCB (Option 521/522/531/532 only): This PCB is mounted
onto the solder side of the main PCB. It provides one or two HP-IB
connectors (Option 5xx dependent) and configuration switches. The
connectors are secured to the back panel, and the configuration switches
can be accessed through the openings next to the connectors.
FRONT PANEL PCB (Option 401): This PCB is mounted onto the
right-upper corner of the front bezel. It provides three switches for
the execution of local functions, and two 7-seqments LED display. It is
connected to the main PCB by a flat-cable.
1.2.2 Winchester Drive
This module ;s mounted on the left-hand side of the subsystem
enclosure.
It
includes all the mechanical parts of the Winchester drive
assembly, and the associated readlwrite and motor control electronics.
The mechanical parts consist of the spindle motor, disks, air filter,
stepper motor, linear actuator, and heads. All mechanical components
are enclosed in a sealed environment.
WARNING: WARRANTY IS VOID IF SEAL IS BROKEN.
1.2.3 Floppy Drive (Except Model 3Oxx's)
This module is mounted on the right-hand side of the subsystem
enclosure, below the main PCB. It contains all the mechanical parts for
physical handling of a diskette. These include the readlwrite and erase
heads, the drive spindle and motor, the stepper motor and its associated
head pos; ti on; ng mechani sm, and the vari ous sensors and controller
electronics.