Acorn R140 Manuals

Manuals and User Guides for Acorn R140. We have 1 Acorn R140 manual available for free PDF download: Service Manual

Acorn R140 Service Manual (95 pages)

Brand: Acorn | Category: Desktop | Size: 3 MB

Contents
3
Technical Specification
7
Dimensions
9
Optional Equipment
9
Econet Interface
9
Expansion Cards
9
Screen Modes
10
Electrical Safety
10
Packaging and Installation
11
System Description
13
Introduction
13
General
13
The I/O System
14
System Architecture
14
Non-IOC Devices
15
System Memory Map
15
The Sound System
15
Hard Disc Drive and Interface
15
Read Data Path
16
Data Separator
16
Write Data
16
Format
16
Disassembly and Assembly
17
Removing the Main PCB
17
Removing the Top Cover
17
Floppy Disc Drive
18
Power Supply Unit
18
Front Moulding Assembly
18
Fan Assembly
19
Main Unit Assembly
19
Keyboard
19
Mouse
20
Fault Finding Information
21
Test Equipment Required
21
Checking a 'Dead' Computer
22
No Sound
23
Functional Testing
24
General Test Procedure
24
Removing the Top Cover of the Computer Unit
24
The Test Disc
24
Performing Soak Tests
25
Repairing Faults
25
Disconnecting the Equipment
25
Packing
25
Main PCB Functional Test
26
Setting up
26
Connecting up the Equipment
26
Running the Tests
26
Hard Disc Drive Tests
27
Hard Disc Formatter
27
Hard Disc Verifier
29
Hard Disc Soak Test
29
Copying HFORM Onto the Hard Disc
30
Quitting the Soak Test
30
Other Tests
31
Memory Test
31
Loudspeaker
31
Battery Backed RAM
31
Standard Colour Monitor
32
High Resolution Mono Monitor
32
Floppy Disk Drive
32
Serial Port
32
Printer
33
Completing the Tests
33
Keyboard Test
34
Equipment Required
34
Running the Test
34
Keys Stuck
35
Leds
35
Keys
35
Expansion Tests
36
Running the Expansion Tests
36
Dual Floppy Disc Test
37
ROM Expansion Card Test
38
I/O Expansion Card Test & MIDI Upgrade Test
38
MIDI Expansion Card Test
39
Setting up the MIDI Expansion Cards
39
Backplane Tests
41
Testing the Backplane
41
Replacing the Backplane
41
Removing the Backplane
41
Main PCB Fault Diagnosis and Repair
43
Tools Required
43
Repairing a 'Dead' Computer
43
Video Failure
43
Test Roms
44
Main Memory Test
45
Repetitive Reset Test
45
Repairs Following Functional Testing
47
Memory
47
Monitor Screen
47
Keyboard and Mouse
48
Parts List
51
Upgrading
65
Expansion Card Installation Instructions
67
Fitting the Expansion Card
68
Floating Point Co-Processor
71
Installation and Operation Guide
71
Installing the Hardware
71
Removing the Cover of the Computer
72
Fitting the Co-Processor Card
73
Installing the RISC os Software Support Code
74
Straightening the Backplane
74
Reassembling the Computer
74
Loading the Floating Point Module
75
RISC Software Support Code Installation
76
Possible Problem Areas
76
Checking the Co-Processor
76
Second Floppy Disc Drive Installation
79
Fitting the Upgrade
80
Removing the Front Moulding Assembly
80
Data Cable Details
81
Installing the New Drive
82
Front Moulding Assembly Details
82
Removing/Inserting LED Wires in the Led/Speaker Connector
83
Main PCB Links and Test Points
87
Main PCB Plugs
87
400/1 RAM Upgrade
91
Fitting the Kit
91
Insert the Ics
91
Disassemble the Computer
91
Change the Link Settings
92
Attach the Serial Number Label
92
Reassemble the Computer
92

Acorn Categories

Plumbing Product

Desktop Fan Stairlifts Control Unit

More Acorn Manuals

Acorn R140 Manuals

Acorn R140 Service Manual (95 pages)

Table of Contents

Related Products

Acorn Categories