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MAI Basic Four S/10 Manuals
Manuals and User Guides for MAI Basic Four S/10. We have
1
MAI Basic Four S/10 manual available for free PDF download: Service Manual
MAI Basic Four S/10 Service Manual (294 pages)
Brand:
MAI Basic Four
| Category:
Desktop
| Size: 53.7 MB
Table of Contents
Table of Contents
3
Table of Contents
9
System S/10 and Office Display Terminal
14
Introduction
15
Purpose
15
Related Documents
15
Safety Precautions
15
Overview
16
Physical Description
17
System S/ 10
17
Main Console
18
1.5.4 Keyboard Assembly
19
Operational Description
19
S/10-0DT Internal Components
20
Specifications
22
AC Power Requirements
25
Ground Checks
26
Installation
25
Introduction
25
Preinstallation Checks
25
Unpacking and Inspecting the S/10-0Dt
25
Power Requirements
26
Installing the S/10-0Dt
27
Left Rear View
28
Attaching and Detaching the Keyboa Rd
29
Right Rear View
29
Serial Port Interface
30
Main Serial Port Pin Assignments
30
Auxiliary Port Pin Assignments
31
Operational Functions
33
Standard Keyboard Layout
33
Key
33
The Main Key
33
ODT and S/10 Keyboard
34
The Auxiliary
35
Key
37
Proper Disk Insertion
46
Of Disk
47
Write Protection
47
Resetting the S
47
Functional Description
49
Introduction
49
Operation
49
Display Characters
50
80 Column Format
50
Special Graphics in the 80 Column Mode
51
The 132 Column Font
52
Status Line
54
Assembling a Charac
55
Interrupt System
56
System Clocks
56
The Disk Controller System
57
System Block Diagram
57
Vectored Interrupt System
59
System Description for the Office Display Terminal
59
Serial Input and Output Ports
59
Z80-L, the DMA and the DMA Controller
60
Line Buffer and Attribute Generator
60
Video Generator and Attribute Control
60
RAM-1, EPROM-1, and the Non-Volatile RAM
60
Advanced Video Processor Circuit Description
61
The Interrupt System and Timer
63
The I/O Ports
63
Z80-L Control Signals
63
Device Enable Signals
64
I/O Port Input/Output Signals
64
Master Clock and Divider Chain
65
Line Buffer Control
65
Line Buffer
66
Character Generation
67
Video out
67
Direct Memory Access (DMA)
68
The DMA
68
Non-Volatile RAM
69
Nvr
69
System Description for System
61
Z80-2 and the Floppy Disk Controller
61
AFC Timing
61
Advanced Floppy
70
Circuit Description
73
Head Positioning Control
73
Track
73
Index Sensor
75
Horizontal Output Transformer
81
Vertical Deflection
81
The Power Supplies
82
Introduction
83
Tools and Test Equipment
83
Periodic and Preventive Maintenance
84
Cleaning
84
Visual Check
84
Keyboard Assembly
84
Cabinet Rear Lower Left Corner
86
Cabinet Cover Latch
86
Voltage Checks
87
Adjustment Procedures
87
4.5.1 Disk Drive Adjustments
89
Radial Track Alignment Patterns
90
Index-To-Data Alignment Pattern
91
Radial-Track Alignment
92
Speed Control Adjustment
92
Track 00 End Stop Adjus Tment
92
Track 00 Sensor Alignment
92
Azimuth Alignment
93
Drive Belt Adjustment
93
Disk Drive er Ase Measurement
95
Disk Drive High Frequency Playback Measurement
95
Video Display Adjustment
101
Advanced Video Processor Test Procedure
103
Test 24 Diagnostic
104
Setup
105
Key Functions
105
Test 24 Output
105
Keyboard Test
106
Test 24 Detail
106
Initialization
106
Normal Execution
107
Line Interrupt Servicing
108
Advanced Floppy Controller (AFC) Tr Oubleshooting
110
Advanced Floppy Controller Test Procedure
110
4.6.7 Troubleshooting Chart
111
System S/10 Troubleshooting Chart
113
Disk Drive Trouble Anal Ysis
117
Drive Won 'T Step or Steps Err a Ticall y
117
Preliminary Troubleshooting Steps
117
Head/Carriage Oscillates at Track 00
117
Drive Motor Won't Rotate
118
Head will Not Load
120
Bad Index Output
120
Motor Control Timing
120
Read Timing
122
Write Timing
124
Video Electronics Assembly
137
Chassis Top Securing Screws
142
Drive Securing Screws
145
Front Panel Securing Screws
145
Disk Drive, Top View
147
Disk Drive, Bottom View
148
Door Button Assembly/Stepper Band
149
Door Button Assembly
149
Removal/Replacement Procedures
149
Stepper Band
149
Printed Circuit Board Assembly (PCBA)
150
Right~Hand Guide/Write Protect Assembly
151
Activity Indicator Assembly
152
Left-Hand Guide Assembly
152
Front Panel Bezel and Activity
152
Led
152
Shield Assembly
151
Cone Assembly
153
Carrier Assembly
154
Index/Load Boss Assembly
155
Drive Motor
156
Solenoid
156
Track 00 Sensor
157
Stepper Motor
160
Head/Carriage Assembly
161
Head Load Pad Assembly
162
ODT - S/10 Keyboard
166
ODT - S/10 Keyboard and Cabinet Assembly
167
ODT - S/10 CRT Assembly
169
CRT Connector
170
S/10 Disk Drive Assembly
172
Spindle, Bearings and Pulley
162
Harness Assembly
174
Disk Drive Ready PCBA Component Layout
179
Advanced Video Processor, (16K) Parts List
181
Advanced Video Processor, (64K) Parts List
190
Advanced Floppy Controller Parts List
196
ODT Power Supply Parts List Phase Lb
201
Diagnostic and Failure Code Indicators
219
Head Select Decode Matrix
223
Write Data Precompensation
227
Host Bus Status Signals
230
Summary of Host Bus Status Signals
231
Host Bus Control Signals
232
Request Sense Status Error Codes
241
Sector Field Description
250
Operational Error Codes
253
Fault Diagnostics
254
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