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21:44, 17 June 2026 Josh talk contribs uploaded File:Acorn System 3.jpg (Acorn System 3, a disc-based Eurocard system in a card frame. Source: Chris's Acorns (Chris Whytehead collection), The Centre for Computing History.)
21:44, 17 June 2026 Josh talk contribs created page File:Acorn System 2.jpg (Acorn System 2 in a 19-inch card frame with an 8-slot backplane. (Control Universal catalogue image, via Chris's Acorns.))
21:44, 17 June 2026 Josh talk contribs uploaded File:Acorn System 2.jpg (Acorn System 2 in a 19-inch card frame with an 8-slot backplane. (Control Universal catalogue image, via Chris's Acorns.))
21:44, 17 June 2026 Josh talk contribs created page File:Acorn System 1 CPU board.jpg (Acorn System 1 6502 CPU Eurocard (part 200,000): Rockwell R6502P, 8154 RAM/IO devices, 2114 RAM, 74S571 ROMs and the LM340-T5 5 V regulator. Source: Chris's Acorns (Chris Whytehead collection), The Centre for Computing History.)
21:44, 17 June 2026 Josh talk contribs uploaded File:Acorn System 1 CPU board.jpg (Acorn System 1 6502 CPU Eurocard (part 200,000): Rockwell R6502P, 8154 RAM/IO devices, 2114 RAM, 74S571 ROMs and the LM340-T5 5 V regulator. Source: Chris's Acorns (Chris Whytehead collection), The Centre for Computing History.)
21:44, 17 June 2026 Josh talk contribs created page File:Acorn System 1.jpg (Acorn System 1 (Acorn Microcomputer, 1979): the 25-key hex keypad and 8-digit LED display on the keyboard Eurocard. Source: Chris's Acorns (Chris Whytehead collection), The Centre for Computing History.)
21:44, 17 June 2026 Josh talk contribs uploaded File:Acorn System 1.jpg (Acorn System 1 (Acorn Microcomputer, 1979): the 25-key hex keypad and 8-digit LED display on the keyboard Eurocard. Source: Chris's Acorns (Chris Whytehead collection), The Centre for Computing History.)
21:37, 17 June 2026 Josh talk contribs created page Acorn Risc PC 700 Capacitor Guide (Create: Risc PC 700 recap (verified cap list, 1208,000-board note))
21:37, 17 June 2026 Josh talk contribs created page Acorn Risc PC 700 Troubleshooting Guide (Create: Risc PC 700 troubleshooting (POST codes; cited))
21:37, 17 June 2026 Josh talk contribs created page Acorn Risc PC 700 Maintenance Guide (Create: Risc PC 700 maintenance (cited))
21:37, 17 June 2026 Josh talk contribs created page Acorn Risc PC 600 Capacitor Guide (Create: Risc PC 600 recap with full verified cap list (TRM parts list))
21:37, 17 June 2026 Josh talk contribs created page Acorn Risc PC 600 Troubleshooting Guide (Create: Risc PC 600 troubleshooting (POST codes, rails, fuses, SMD-leak faults; cited))
21:37, 17 June 2026 Josh talk contribs created page Acorn Risc PC 600 Maintenance Guide (Create: Risc PC 600 maintenance (mains PSU, NiMH battery, SMD-cap leakage; cited))
21:37, 17 June 2026 Josh talk contribs created page Acorn Risc PC 700 (Create Risc PC 700 product page (infobox image, cited))
21:37, 17 June 2026 Josh talk contribs created page Acorn Risc PC 600 (Create Risc PC 600 product page (infobox image, cited))
21:30, 17 June 2026 Josh talk contribs created page Acorn Risc PC Technical Reference Manual (Create Risc PC TRM page (host PDF on-wiki, PDFEmbed))
21:30, 17 June 2026 Josh talk contribs created page File:Acorn Risc PC Technical Reference Manual.pdf (Acorn Risc PC Technical Reference Manual (Issue 1, September 1994; part 0497,057), Acorn Computers. Full hardware reference for the Acorn Risc PC 600 and Acorn Risc PC 700: system description (ARM610/710, IOMD, VIDC20, FDC37C665), interface specifications, the complete main-PCB parts list (capacitor designators and values), the Power On Self Test, engineering drawings and chipset pinouts. Source PDF: 4corn Computers archive. Category:Acorn Service Manuals)
21:30, 17 June 2026 Josh talk contribs uploaded File:Acorn Risc PC Technical Reference Manual.pdf (Acorn Risc PC Technical Reference Manual (Issue 1, September 1994; part 0497,057), Acorn Computers. Full hardware reference for the Acorn Risc PC 600 and Acorn Risc PC 700: system description (ARM610/710, IOMD, VIDC20, FDC37C665), interface specifications, the complete main-PCB parts list (capacitor designators and values), the Power On Self Test, engineering drawings and chipset pinouts. Source PDF: 4corn Computers archive. Category:Acorn Service Manuals)
21:30, 17 June 2026 Josh talk contribs created page File:Acorn Risc PC 700 motherboard.jpg (Acorn Risc PC 700 motherboard (board 1208,000) with 2 MB VRAM and RAM SIMMs fitted; IOMD and VIDC20 visible, with the two CPU-card sockets and RISC OS 3.6 ROMs. Source: Chris's Acorns (Chris Whytehead collection), The Centre for Computing History.)
21:30, 17 June 2026 Josh talk contribs uploaded File:Acorn Risc PC 700 motherboard.jpg (Acorn Risc PC 700 motherboard (board 1208,000) with 2 MB VRAM and RAM SIMMs fitted; IOMD and VIDC20 visible, with the two CPU-card sockets and RISC OS 3.6 ROMs. Source: Chris's Acorns (Chris Whytehead collection), The Centre for Computing History.)
21:30, 17 June 2026 Josh talk contribs created page File:Acorn Risc PC 600 motherboard.jpg (Acorn Risc PC 600 motherboard (board 0197,000): the two CPU-card sockets and RISC OS ROMs (left), IOMD, VIDC20, VRAM and DRAM SIMM sockets, on-board IDE/floppy connectors and the backplane socket. Source: Chris's Acorns (Chris Whytehead collection), The Centre for Computing History.)
21:30, 17 June 2026 Josh talk contribs uploaded File:Acorn Risc PC 600 motherboard.jpg (Acorn Risc PC 600 motherboard (board 0197,000): the two CPU-card sockets and RISC OS ROMs (left), IOMD, VIDC20, VRAM and DRAM SIMM sockets, on-board IDE/floppy connectors and the backplane socket. Source: Chris's Acorns (Chris Whytehead collection), The Centre for Computing History.)
21:30, 17 June 2026 Josh talk contribs created page File:Acorn Risc PC.jpg (Acorn Risc PC publicity photograph (Risc PC 600, 1994), showing the stackable "slice" case. Source: Chris's Acorns (Chris Whytehead collection), The Centre for Computing History.)
21:30, 17 June 2026 Josh talk contribs uploaded File:Acorn Risc PC.jpg (Acorn Risc PC publicity photograph (Risc PC 600, 1994), showing the stackable "slice" case. Source: Chris's Acorns (Chris Whytehead collection), The Centre for Computing History.)
21:21, 17 June 2026 Josh talk contribs created page Acorn A5000 Capacitor Guide (Create: A5000 recap (SMD electrolyte leakage, procedure; values via on-wiki circuit diagrams))
21:21, 17 June 2026 Josh talk contribs created page Acorn A5000 Troubleshooting Guide (Create: detailed A5000 troubleshooting (PSU rails/fuse, functional test suite, SMD-leak faults, ADFSBuffers; cited))
21:21, 17 June 2026 Josh talk contribs created page Acorn A5000 Maintenance Guide (Create: A5000 maintenance (mains PSU, battery pack, SMD-cap leakage; cited))
21:18, 17 June 2026 Josh talk contribs created page Acorn A5000 Circuit Diagrams (Create A5000 manual/circuit-diagram page (host PDF on-wiki, PDFEmbed))
21:18, 17 June 2026 Josh talk contribs created page Acorn A5000 Service Manual (Create A5000 manual/circuit-diagram page (host PDF on-wiki, PDFEmbed))
21:18, 17 June 2026 Josh talk contribs created page File:Acorn A5000 Circuit Diagrams.pdf (Acorn A5000 main PCB circuit diagrams (sheets 1-4 plus the power-and-ground sheet) from the A5000 Technical Reference Manual. Source: Chris's Acorns (Chris Whytehead collection), The Centre for Computing History. Category:Acorn Service Manuals)
21:18, 17 June 2026 Josh talk contribs uploaded File:Acorn A5000 Circuit Diagrams.pdf (Acorn A5000 main PCB circuit diagrams (sheets 1-4 plus the power-and-ground sheet) from the A5000 Technical Reference Manual. Source: Chris's Acorns (Chris Whytehead collection), The Centre for Computing History. Category:Acorn Service Manuals)
21:18, 17 June 2026 Josh talk contribs created page File:Acorn A5000 Service Manual.pdf (Acorn A5000 Module Level Service Manual (Issue 1, November 1991), Acorn Computers. Module-level fault diagnosis, the ARM5000/A5000 functional test suite, disassembly, PSU-fail procedure and safety tests. Source: Chris's Acorns (Chris Whytehead collection), The Centre for Computing History. Category:Acorn Service Manuals)
21:18, 17 June 2026 Josh talk contribs uploaded File:Acorn A5000 Service Manual.pdf (Acorn A5000 Module Level Service Manual (Issue 1, November 1991), Acorn Computers. Module-level fault diagnosis, the ARM5000/A5000 functional test suite, disassembly, PSU-fail procedure and safety tests. Source: Chris's Acorns (Chris Whytehead collection), The Centre for Computing History. Category:Acorn Service Manuals)
21:18, 17 June 2026 Josh talk contribs created page File:Acorn A5000 circuit diagram (4 of 4).png (Acorn A5000 main PCB circuit diagram, sheet 4 of 4. Greyscale scan, downscaled. Source: Chris's Acorns (Chris Whytehead collection), The Centre for Computing History.)
21:18, 17 June 2026 Josh talk contribs uploaded File:Acorn A5000 circuit diagram (4 of 4).png (Acorn A5000 main PCB circuit diagram, sheet 4 of 4. Greyscale scan, downscaled. Source: Chris's Acorns (Chris Whytehead collection), The Centre for Computing History.)
21:18, 17 June 2026 Josh talk contribs created page File:Acorn A5000 circuit diagram (3 of 4).png (Acorn A5000 main PCB circuit diagram, sheet 3 of 4. Greyscale scan, downscaled. Source: Chris's Acorns (Chris Whytehead collection), The Centre for Computing History.)
21:18, 17 June 2026 Josh talk contribs uploaded File:Acorn A5000 circuit diagram (3 of 4).png (Acorn A5000 main PCB circuit diagram, sheet 3 of 4. Greyscale scan, downscaled. Source: Chris's Acorns (Chris Whytehead collection), The Centre for Computing History.)
21:18, 17 June 2026 Josh talk contribs created page File:Acorn A5000 circuit diagram (2 of 4).png (Acorn A5000 main PCB circuit diagram, sheet 2 of 4. Greyscale scan, downscaled. Source: Chris's Acorns (Chris Whytehead collection), The Centre for Computing History.)
21:18, 17 June 2026 Josh talk contribs uploaded File:Acorn A5000 circuit diagram (2 of 4).png (Acorn A5000 main PCB circuit diagram, sheet 2 of 4. Greyscale scan, downscaled. Source: Chris's Acorns (Chris Whytehead collection), The Centre for Computing History.)
21:18, 17 June 2026 Josh talk contribs created page File:Acorn A5000 circuit diagram (1 of 4).png (Acorn A5000 main PCB circuit diagram, sheet 1 of 4 (A5000 Technical Reference Manual). Greyscale scan, downscaled. Source: Chris's Acorns (Chris Whytehead collection), The Centre for Computing History.)
21:18, 17 June 2026 Josh talk contribs uploaded File:Acorn A5000 circuit diagram (1 of 4).png (Acorn A5000 main PCB circuit diagram, sheet 1 of 4 (A5000 Technical Reference Manual). Greyscale scan, downscaled. Source: Chris's Acorns (Chris Whytehead collection), The Centre for Computing History.)
21:18, 17 June 2026 Josh talk contribs created page File:Acorn A5000 motherboard.jpg (Acorn Archimedes A5000 motherboard (25 MHz, board 0192,100). The four RISC OS 3 ROMs (with an empty fifth socket), the ARM3, MEMC1a, VIDC1a and IOC, the IDE/floppy connectors (lower right), the podule-backplane connector and the battery pack. Source: Chris's Acorns (Chris Whytehead collection), The Centre for Computing History.)
21:18, 17 June 2026 Josh talk contribs uploaded File:Acorn A5000 motherboard.jpg (Acorn Archimedes A5000 motherboard (25 MHz, board 0192,100). The four RISC OS 3 ROMs (with an empty fifth socket), the ARM3, MEMC1a, VIDC1a and IOC, the IDE/floppy connectors (lower right), the podule-backplane connector and the battery pack. Source: Chris's Acorns (Chris Whytehead collection), The Centre for Computing History.)
21:07, 17 June 2026 Josh talk contribs created page Acorn Archimedes A4000 Capacitor Guide (Create: capacitor guide (leaded vs SMD distinction, PSU recap; values via on-wiki TRM))
21:07, 17 June 2026 Josh talk contribs created page Acorn Archimedes A4000 Troubleshooting Guide (Create: detailed troubleshooting (PSU rails/fuses, functional test suite, ARM250; cited))
21:07, 17 June 2026 Josh talk contribs created page Acorn Archimedes A4000 Maintenance Guide (Create: detailed maintenance guide (ARM250 Roadrunner; PSU/battery/IDE; cited))
21:07, 17 June 2026 Josh talk contribs created page Acorn Archimedes A3000 Capacitor Guide (Create: full capacitor list + recap (from A3000 Service Manual parts list))
21:07, 17 June 2026 Josh talk contribs created page Acorn Archimedes A3000 Troubleshooting Guide (Create: detailed component-level troubleshooting (test points, test ROMs, DRAM map, clock/bus; cited))
21:07, 17 June 2026 Josh talk contribs created page Acorn Archimedes A3000 Maintenance Guide (Create: detailed maintenance guide (sourced from A3000 Service Manual; mains+battery safety; cited))
21:00, 17 June 2026 Josh talk contribs created page Acorn A3010, A3020 and A4000 Training Reference Manual (Create Acorn A3000/A4000 manual page (host PDF on-wiki, PDFEmbed))