Data General 6236 Manuals

Manuals and User Guides for Data General 6236. We have 1 Data General 6236 manual available for free PDF download: Service Manual

Data General 6236 Service Manual

Data General 6236 Service Manual (224 pages)

DISK DRIVE SUBSYSTEM

Brand: Data General | Category: Storage | Size: 15.24 MB

Table of Contents

Table of Contents
5
Section Title Page
6
Introduction
11
Description of Models
11
Performance Specifications
14
Field Replaceable Units
15
Disk Drive Subsystem Description
22
- Printed Circuit Boards
  22
- Controller PCB
  23
- Head Disk Assembly
  23
- Coarse Air Filter
  24
- Switch Assembly (Model 6237 Only)
  24
- Latch Assembly {Model 6237 Only)
  24
- Power Package {Model 6237 Only)
  24
Operating Controls and Procedures
25
Control Switches and Indicator Leds
25
- External Switches
  26
- Circuit Breakers
  28
- Unit Switches Swl and SW2
  30
- Internal Switches
  38
- Indicator Leds
  39
- External Indicator Leds
  39
Operating Procedures
43
- Power-Up Procedure
  44
- Power Control PCB Leds
  44
- Power-Up Test Sequence
  45
- Spindle Control PCB Leds
  46
- Power-Down Procedure
  47
Monitoring Procedure
47
Emergency Conditions
47
Operator Maintenance
49
Theory of Operation
50
Architectural Theory
50
- Disk Function Pcbs
  51
Head Disk Assembly {HDA)
51
Front Panel PCB
51
Power
51
- Cabling
  51
- Functional Theory
  66
- Operational Theory
  78
- Power-Up Sequence {Including Power-Up Diagnostics)
  78
The Control Block
78
- Write Operation
  82
- Recalibrate Operation
  84
- Fault Diagnosis
  86
- Troubleshooting Reference Information
  86
- Power Amplifier PCB LED
  93
- Initial Troubleshooting Checkout
  95
- Initial Checkout
  95
- Power Control PCB Leds
  95
- Internal Switches
  95
- Fuses
  95
- Gaining Access to the Drive
  96
- Troubleshooting Flowcharts
  99
- Diagnostic Troubleshooting Programs
  107
The 6236 Diagnostic Program - 6236 DIAG
108
- 6236 FMTR (Formatter) Program
  108
- 6236 DIAG Program Run Times
  109
- Switch Options
  110
- Other Commands
  110
- Internal Cell Opening Commands
  114
- Other ODT Commands
  115
- 6236 FUNC Program Run Times
  116
- Switch Options
  117
- Other Commands
  118
- UDKP RELI Program Run Times
  121
- UDKV RELI Program Run Times
  122
- Data Patterns
  123
- UDKP/UDKV REL! Command String
  127
- Other Commands
  130
- Operator Controlled Printouts
  134
- 6236 FMTR Program Switch Options
  140
- Removal and Replacement Procedures
  145
- Tools and Equipment
  147
- Controller Pcb Removal/Replacement
  147
- Front Panel Removal/Replacement
  150
- Coarse Air Filter Removal/Replacement
  154
- Front Panel Pcb Removal/Replacement
  155
- Read/Write Pcb Removal/Replacement
  157
- Control Logic Pcb Removal/Replacement
  161
- Power Amplifier Pcb Removal/Replacement
  163
- Spindle Control Pcb Removal/Replacement
  164
- Power Control Pcb Removal/Replacement
  165
- Power Supply Assembly Removal/Replacement
  167
- Power Supply Stunt Plugs Removal/Replacement
  171
- POWER SUPPLY FUSE (Fl) REMOVAL/REPLACEMENT
  173
- Head Disk Assembly (Hda) Removal/Replacement
  174
- Terminator Removal/Replacement
  180
Meter High Cabinet Removal/Replacement Procedures (Model 6237)
181
Latch Assembly (Top and Rear) Removal/Replacement
181
Switch Assembly Removal/Replacement
182
Power Package Fuse Removal/Replacement
185
Power Package AC Power Cord Removal/Replacement
186
- Power Package Removal/Replacement
  186
- Installation/Removal
  192
Electrical Specifications
195
Environmental Specifications
196
- AC Power Cable Requirements
  196
Tools, Equipment and Materials
197
Unpacking, Checklist and Inspection
197
Unpacking/Model 6236
197
- Unpacking/Model 6237
  197
- Tools and Test Equipment
  197
- Unpacking the Controller PCB
  203
6236/6237 Installation
205
Power-Up Procedure
221
- Subsystem Verification
  222
- Subsystem Removal
  222

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