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Service manual
Sinclair QL Service Manual
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Also See for QL
:
User manual
(422 pages)
,
Beginner's manual
(135 pages)
,
Service manual
(45 pages)
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Table Of Contents
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Contents
Table of Contents
Bookmarks
Table of Contents
List of Contents and Illustrations
System Description
Architecture
MC 68008 Cpu
Data Bus.
Address Bus.
Control Bus.
Interrupt Control
DTACK (Data Transfer Acknowledge)
DS (Data Strobe)
Bus Arbitration Control
M6800-Compatible Peripheral Control
Processor Status
Intelligent Peripheral Controller (IPC)
Reset and Halt
Control Lines
Keyboard Monitor
Memory Organisation
Joystick/Loudspeaker Operation
Read/Write Operations
Read Only Memory
Peripheral Control
RAM Memory
Microdrive
Power Supplies
Test
Keyboard Matrix Interconnections
Disassembly
Access to Internal Components
Circuit Board
Loudspeaker
Microdrive: Disassembly for Repair
Keyboard: Disassembly for Repair
Assembly
System Test
Power up
Colour Test
Sound Test
Network Test
RS232C Loopback Test
Keyboard Test
Joystick Test
Real-Time Clock Test
Microdrive 2 Test
Microdrive Test Not Inserted Correctly
End of Test
Fault Diagnosis and Repair
Test Equipment
Modification History
Motor Location Jig
Fault Diagnosis
Mandatory Modifications
Keyboard
Video
Fault-Finding Guide
Known Bugs and Their Remedies
Monitor Connections
Known Bugs Overview
SER Outputs
How to Cure a Crashing QL
Flickering Displays
Repair
Firmware Upgrade
Keyboard Format
Head Chassis Diagram
User Hints
Fitment Checks
Improvement of Microdrive Performance
Collar for QL Microdrive 2
Issue 5 Board
Issue 6 Board View
Microdrive Fault Finding
Mechanical Checks
Using the Signal Test Program
Write Check
Faults on Early Microdrives
Read Check
Erase Check
Signal Test Program
Internal Circuit Diagram
Parts List
Serial Numbers
Retrospective (Mandatory) Modifications
Notes to Tables
General Assembly
Heatsink Assembly
Microdrive Chassis
Microdrive Board
Circuit Diagrams
QL Block Diagram
Final PC Board View
Printed Circuit Board Layout
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See also:
User Manual
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