Sinclair QL Manuale di Servizio Pagina 17
- Pagina / 45
- Indice
- SEGNALIBRI
- Sinclair QL Service Manual 2
- SECTION 1 3
- SYSTEM DESCRIPTION 3
- DS R/W D0-D7 4
- Function Code Output 4
- Cycle Type 4
- FC2 FC1 FC0 4
- 5. MEMORY ORGANISATION 7
- 7. MICRODRIVE 8
- 8. POWER SUPPLIES 9
- FIGURE 1.3 QL BLOCK DIAGRAM 10
- SECTION 2 11
- DISASSEMBLY/ASSEMBLY 11
- 2. ASSEMBLY 12
- SECTION 3 13
- SYSTEM TEST 13
- 3.5 RS232C Loopback Test 14
- 3.2 Colour Test 14
- 3.3 Sound Test 14
- 3.4 Network Test 14
- 3.6 Keyboard Test 15
- 3.7 Joystick Test 15
- 3.8 Real-Time Clock Test 15
- 3.9 Microdrive 2 Test 15
- 3.10 Microdrive 1 Test 16
- 3.12 End of Test 17
- SECTION 4 18
- FAULT DIAGNOSIS AND REPAIR 18
- 2. FAULT DIAGNOSIS 19
- F1...MONITOR 20
- F2...TELEVISION 20
- © 1983 Sinclair Research Ltd 20
- SYMPTOM REMEDY 22
- 2.5 Video 23
- 2.6 Fault-Finding Guide 23
- 3. REPAIR 24
- 4. FIRMWARE UPGRADE 24
- FIGURE 4.2 KEYBOARD FORMAT 25
- FIGURE 4.3 HEAD CHASSIS 25
- APPENDIX A TO SECTION 4 26
- KNOWN BUGS AND THEIR REMEDIES 26
- 1. MONITOR CONNECTIONS 26
- 2. KNOWN BUGS 26
- 3. PRINTING PROBLEMS 27
- 4. SER OUTPUTS 28
- 5. HOW TO CURE A CRASHING QL 28
- 6. FLICKERING DISPLAYS 28
- APPENDIX B TO SECTION 4 29
- USER HINTS 29
- APPENDIX C TO SECTION 4 30
- MANDATORY MODIFICATIONS 30
- APPENDIX D TO SECTION 4 32
- MICRODRIVE FAULT FINDING 32
- 3.4 Erase Check 33
- 340 PAUSE 50 34
- 350 SAVE ser1 34
- 360 END DEFine 34
- SECTION 5 36
- PARTS LISTS 37
- 4. NOTES TO TABLES 38
- Description Manufacturer/Type 39
- Circuit Ref 39
- MDV1 MDV2 39
- Table of Contents 44
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