Tektronix 4112 Manuals

Manuals and User Guides for Tektronix 4112. We have 2 Tektronix 4112 manuals available for free PDF download: Service Manual

Tektronix 4112 Service Manual (336 pages)

COMPUTER DISPLAY TERMINAL

Brand: Tektronix | Category: Monitor | Size: 66.53 MB

Table of Contents
4
The 4112 Computer Display Terminal
24
Introduction
25
About this Manual
25
Related Documents
25
Installation Information
26
General Description
26
Major Parts of the
26
Rear-Panel Controls and Connectors
28
Bell Indicator
28
Error Messages
30
Options
31
Accessories
32
Standard Accessories
32
Optional Accessories
32
Section 2 OPERATING INFORMATION
33
Controls and Indicators
33
Indicator Lights
35
Keyboard Layout
35
Keyboard
36
Samples of Hard Copy
36
Display Control Keys and the Thumbwheels
37
Rear-Panel Controls and Connectors
38
Operating Check
40
SETUP Mode
40
SETUP Commands
40
Using the Status Message
41
Conventions
41
4112 Startup
42
Creating a Segment
45
Manipulating a Graphics Segment
46
Graphics Input
48
Using GIN (Graphics Input) Mode
49
Characteristics
50
Characteristics/Specifications
50
Physical Characteristics
50
Environmental Characteristics
50
Physical Dimensions
51
Electrical Characteristics
52
Display Module Characteristics
53
Installation Requirements
53
Graphics Characteristics
54
Alphanumeric Character Sets
54
Theory Overview
55
Defining Terms
55
World Coordinate Space
55
Terminal Coordinate Space
55
Raster Memory Space
55
The Window-Viewport Transform
56
Window-Viewport Transform
56
Window
57
Viewport
57
General Display Concepts
58
Pixels
58
Characters
59
Bit Map and Display Concepts
59
4112 Alphatext Character Array
59
4112 Overview
60
Bus Masters and Slaves
60
Processor Bus
62
80-Pin Connector Signals
63
Display Bus
65
Video Controller
68
Vector Generator
68
Display Memories
68
Connectors
68
50-Pin Front-Edge Connector Signals
70
Processor Bus Theory
72
Introduction to Processor Bus
72
Processor Board Theory
72
Processor Theory Overview
72
Processor Board Block Diagram
72
Interrupt Controller
74
Processor Board to
74
System Memory
74
Control, Status, and Timing
74
Host Computer Port
75
Keyboard Port
75
Processor Board Circuit Block Descriptions
75
Mpu
77
The Bus Cycle
77
Memory and
77
Interrupt Controller
79
Local Data Bus Buffer
79
Interrupt Priority Logic and Registers
79
Control Logic
80
Read and Write Logic
80
Cascade Buffers and Comparator
80
Block Diagram
80
PIC Operations
81
The Interrupt Operating Sequence
81
Bus Controller Block Diagram
82
Bus Controller Timing
84
Selection Bits for ROM Banks
86
Processor Board Address Enabling Signals
88
Bus Clock Generator Timing
90
MPU Timing Generator Circuit
91
MPU State and MPU Timing Generator Signals
91
Keyboard Block Diagram
98
Ram/Rom Board Theory
100
General Description
100
General Operation
100
Ram/Rom Board Circuit Block Descriptions
100
Bus Receivers
100
RAM Control
103
Arbiter Circuitry
103
Timing and Control
103
Clock
103
Dynamic RAM Controller Operations
103
Idling
103
Write Cycle
103
Read Cycle
103
Refresh Cycle
103
Data Input Buffers
104
RAM Array Board
104
RAM Array Board Circuit Blocks
104
Data Output Latches
104
RAM Address Decode
104
Clock
104
ROM Address Decode
104
Data Output Drivers
105
RAM Controller Board Theory
105
General Description
105
General Operation
105
RAM Controller Boards and Memory Address Space
107
RAM Controller Board Circuit Block Descriptions
108
Bus Receivers
108
RAM Control
108
Multiplexing of RAM Addresses
108
Arbiter Circuitry
108
Timing and Control
108
Dynamic RAM Controller Operation
109
Idling
109
Write Cycle
109
Read Cycle
109
Refresh Cycle
109
Data Input Buffers
109
Data Output Latches
109
RAM Base Address Decode
109
Clock
110
Bank Address Decode
110
Pixel Timing Diagram
115
RAM Timing Generator Circuitry
116
Memory Cycle Priority Control Gates
116
Signals
143
Memory Control ROM Modes
143
Raster Memory Board Theory
151
Introduction
151
Decode and Startup Cycle
152
Refresh Cycle
152
Vector Cycles
154
Operate Cycle
154
Blockmove Source/Destination/Erase
154
Processor Read Cycle
155
Circuit Block Descriptions
156
Buffer
156
Addressable Latches
156
RAM Enable
156
RAM Control
156
Vector Data Input
158
Alus Circuit Block
159
Blockmove Latch
160
Memory Address Selectors
160
Memory Array
161
Processor Read Latches
161
Decode
162
Video Map
164
Dual Raster Memory Board
164
Display Module Theory
173
Introduction
173
Display Module Timing
174
Video Circuitry
176
Multiplier Block
176
Video Amplifier
179
Horizontal Circuitry
180
Horizontal Delay
180
Phase-Locked Loop
180
Horizontal Driver
181
Horizontal Output
182
Vertical Deflection Circuitry
184
Synchronization Delay Circuit
184
Vertical Ramp Generator
184
Vertical Linearity
185
Vertical Amplifier
185
High Voltage Supply
187
Error Amplifier
187
Triggered Variable Pulse Width Generator
188
Output Circuit
188
High Voltage Multiplier and Rectifier Circuit
190
Adjustment Control Keys
194
Recommended Test Equipment
201
Display Module Problems
210
Disk Option Troubleshooting
211
Disk Media Problems
211
Hard and Soft Errors
211
Disk Drive Unit Faults
211
Self-Test Diagnostic Program
212
Parts of Self-Test
212
Power-Up
212
Main Self-Test
213
Adjustment Routine
213
7X System Errors Detector
213
Control Flow of Self-Test
213
Power-Up/Self-Test Sequence
215
Self-Test Firmware Jump Tables
216
How to Run Self-Test
216
Self-Test Error Messages
218
Errors Directory
218
Non-Option Error Messages
218
Self-Test Errors Directory
218
Keyboard Check and Lights
219
Keyboard/Processor Board Errors
220
Processor Check
221
Communications and Bus Checks
225
RAM/ Bus and Host Port Errors
225
Memory Tests
228
ROM Check (C)
228
Checks
231
RAM Test Errors
231
CMOS Memory Errors
233
Display Bus/Board and System Errors
234
System Level Errors (7X)
236
4112 Option Tests and Error Messages
238
3PPI Board Tests
238
3Ppierrors
239
Disk Option Errors
241
Tablet Error Messages
248
Adjustment Self-Test
251
The General Menu
251
Adjustment Control Keys
251
4112 Display Adjustment Menu
252
Processor Board Adjustment Menu/Procedure
252
CMOS-Reset, Function Key F1
252
411 2 Display Menu
252
Keyboard, Function Key F2
253
Disk Option Adjustment Menu/Procedure
254
3PPI Adjustment Menu/Procedure
254
Tablet Adjustment Menu/Procedure
255
Fuse Replacement Values
269
Disk Drive Unit Maintenance Schedule
269
Signals List
281
Processor Board Strap Settings
299
Keyboard Language Option Straps
300
Video Controller Board Straps
300
External Video Straps
302
Strap Settings
315
Video Levels
315
Swedish Character Set
325
Danish/Norwegian Character Set
326
APL Character Set
327
Use of RAM at Power-Up
334

Tektronix 4112 Service Manual (361 pages)

COMPUTER DISPLAY TERMINAL

Brand: Tektronix | Category: Monitor | Size: 78.56 MB

Section 1

4
- Table of Contents
  4
- Introduction
  12
- Using this Manual
  12
- Controls and Connectors Summary
  13
- Internal Configuration
  14
- Accessories
  16
- Standard Accessories
  16
- Optional Accessories
  16
- Installation
  17
- Unpacking the Terminal
  17
- Site Selection
  18
- Testing the Terminal (Self-Test)
  20
- Applying Power
  20
- Installation Procedures
  20
- Connecting to a Host Computer
  22
- Direct Connection
  22
- Telephone Line Connection
  22
- Testing Communications
  23
- Repackaging the Terminal
  24
- Processc1R Board Straps
  26
- Keyboard Straps
  27
- Video Controller Board Straps
  27
- Keyboard Language Option Straps
  27
- Video Controller Strap Settings
  27
- External Video Straps
  29
- External Video Board Straps
  29
- Dual Plane Raster Memory Board Straps
  29
- Raster Memory Board Straps
  29
- Vector Generator Board Straps
  29
- Adjustments(Shortform)
  30
- Display Module Adjustments
  31
- Introduction to Self-Test
  32
- Parts of Self-Test
  32
- Power-Up
  32
- Main Self-Test
  32
- Adjustment Routine
  33
- System Errors Detector
  33
- Control Flow of Self-Test
  33
- Power-Up/S_ E Lf-Test Sequence
  35
- How to Run Self-Test
  36
- Self-Test Firmware Jump Tables
  36
- Self-Test Error Messages
  37
- Errors Directory
  37
- Non-Option Error Messages
  37
- Processor Chtkk
  41
- Processor Board Errors
  41
- Communications and Bus Checks
  45
- Ram/Bus and Host Port Errors
  45
- Memory Tests
  48
- System/Option ROM Errors
  49
- Ram Test Errors
  51
- CMOS Memory Errors
  53
- Display Bus Checks
  54
- Display Bus/Board and System Errors
  55
- System Level Errors (7X)
  56
- System Level Errors (7X Codes)
  57
- 3PPI Board Tests
  58
- 3PPI Errors
  58
- Tablet Self-Test
  68
- Tablet Error Messages
  68
- Adjustment Self-Test
  71
- The General Menu
  71
- Adjustment Control Keys
  71
- 411 2 Display Adjustment Menu
  72
- Processor Board Adjustment Menu/Procedure
  72
- CMOS-Reset
  72
- Host Port
  73
- Disk Option Adjustment Menu/Procedure
  74
- 3PPI Adjustment Menu/Procedure
  74
- Disk Option Errors
  84
- United Kingdom Character Set
  274
- Characters Used in < Char> Parameters
  275
- Characters Used in < Int> and < Int+ > Parameters
  276
- Characters Used in < Int-Report> Parameters
  277
- Cha Racters Used in XV-Report Parameters
  279
- Swedish Character Set
  281
- Danish/Norwegian Character Set
  282
- APL Character Set
  283
Section 2

287
- Description Page
  289
- Description of the Module
  292
- General
  292
- Physical Description
  292
- Differences Among Versions
  293
- Electrical
  294
- Physical
  294
- Specifications
  294
- Environmental
  296
- External Connections
  297
- General
  298
- Maintenance
  298
- Safety Summary
  298
- Changing the Line Voltage
  299
- Troubleshooting
  299
- Equipment Required
  300
- Control Circuit
  301
- Preparation
  301
- Primary Circuit
  303
- Logical On/Off Switch
  304
- DC Supplies
  305
- Timing Circuit
  305
- Assembly/Disassembly
  306
- Removing the Inverter Board
  307
- Removing the Regulator Board
  308
- Replacing the + 5 V Rectifier
  309
- Equipment Required
  310
- Performance Check
  310
- Adjustment Procedure
  311
- DC Voltages
  311
- INIT-0 and PWRFL-0
  311
- Procedures
  311

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Tektronix 4112 Manuals

Tektronix 4112 Service Manual (336 pages)

Table of Contents

Tektronix 4112 Service Manual (361 pages)

Table of Contents

Section 1

Section 2

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