Category:Psion

The Psion category is new!. Many of the pages do not exist, documentation has not been uploaded, and the category is subject to change. If you wish to contribute, please do!

Welcome to the Psion category! Psion was a British maker of handheld computers. Its line runs from the Organiser of 1984 and the Organiser II, through the Series 3 and Series 5 clamshell palmtops and the Revo, to the Series 7, netBook and netBook Pro sub-notebooks and the Workabout industrial handhelds. This category collects the machine pages, the maintenance, troubleshooting and repair guides, and Psion's own manuals as hosted PDFs.

Each system features:

• A machine page with specifications, hardware details and the documentation that survives
• General maintenance and troubleshooting guides, using Psion's own fault tables and reset procedures where they exist
• Repair guides for the known weak points: Series 3 and 5mx hinges, the Series 5 screen cable, and the Revo and netBook batteries
• Psion's user guides, service manuals and parts lists, hosted as PDFs

No capacitor guides are listed for the Series 3 family. The fault table in Psion's Psion Series 3a Service Manual lists no capacitor faults, and the faults the comp.sys.psion FAQ describes are mechanical and connection faults: the hinges, the button bar and screen ribbons, the battery lead and the SSD door switches. No hinge guide has been written for the Siena.

The Psion Series 5mx Capacitor Replacement Guide records that Psion published no component values for the 5mx and describes the inspection and current checks that apply; no capacitor guide is listed for the other EPOC machines. The 5mx Pro uses the 5mx case and hinge, so it shares the 5mx hinge guide. The Revo's main repair is its two soldered-in NiMH cells, so the last column links the battery guide for the Revo and Revo Plus.

No capacitor guides are listed for the Series 7, netBook or netBook Pro. The hardware faults recorded in the Series 7 FAQ and on PsionWiki are the screen cable, the battery-catch microswitch, the CompactFlash drawer and PC Card current; on the netBook Pro, owners report broken hinges. See Capacitors in the Series 7 troubleshooting guide. The Series 7 and netBook share a battery pack, so the rebuild procedure is on Psion netBook Battery Service; the netBook Pro has its own page. No Psion service manual, spare parts list or exploded diagram is known to survive for these three machines; their user guides, datasheets and Psion Teklogix's netBook FAQ are listed below.

• PsionLX – Psion Teklogix's unreleased Linux for the netBook Pro (2004-2005): what the beta contained, every surviving file and where it came from, and the RetroTechCollection reconstruction that boots from CompactFlash.

The Workabout pages have not been written yet.

• Recommended Tools – Essential tools for restoration, soldering and diagnostics.
• Capacitor Failure Symptoms – Recognising and diagnosing failed electrolytic capacitors.
• Battery Refurbishment – Cell selection, spot welding and safety for rebuilding battery packs.
• Battery Explosion, Capacitor or Corrosion Damage – Dealing with leaked cells and corrosion.

• Psion Organiser II Spare Parts List – Psion's exploded diagram and parts lists for the Organiser II boards, packs and peripherals, with designators, values and Psion part numbers.
• Psion Series 3a Service Manual – Psion's service manual for the Series 3a (June 1996): circuit description, fault table, exploded views with part numbers, disassembly, and the final test with Series 3 and 3a current limits.
• Psion Series 3a User Guide – Psion's user guide for the Series 3a (July 1993).
• Psion Series 3c User Guide – Psion's user guide for the Series 3c (August 1996).
• Psion Series 5 Service Manual – Psion's 46-page service manual for the Series 5 (November 1997): circuit description, exploded views with part numbers, disassembly and reassembly, and the factory Final Test fault codes. Its disassembly procedures are a guide to the similar 5mx case.
• Psion Series 5mx User Guide – Psion's user guide for the Series 5mx (October 1999).
• Psion Serie 5mx Benutzerhandbuch – Psion's German user guide for the Series 5mx and 5mx Pro (July 1999).
• Psion Revo Handbook – Psion's user guide for the Revo (February 2000).
• Psion Series 7 User Guide – Psion's 226-page user guide for the Series 7 (August 1999, part no. 6131-0004-01).
• Psion netBook Documentation – Psion's user guide, product datasheet, customer FAQ with the PC Card slot current limits, the netBook Hardware note, and a serial port pinout.
• Psion netBook Pro Documentation – Psion Teklogix's user manual (Rev C and Rev A), quick start guide (Rev D) and specification sheet, and a note on the BooSt boot firmware.
• Service Manuals – Cross-manufacturer manual collection.
• Capacitor Replacement Guides – Model-specific capacitor specs.

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