Psion netBook Troubleshooting Guide: Difference between revisions
Adapter rating: use Psion's own 15 V 1.5 A figure and note the community 15.5 V variant |
Add Psion's own PC Card current limits and confirm the September 2002 board change against the community record |
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| '''Microdrive works but the battery goes flat much faster''' || Normal. A Microdrive is a mechanical drive and draws more power than CompactFlash || Use solid-state CompactFlash unless you specifically need the drive's write endurance for swap.<ref name="openpsion" /> | | '''Microdrive works but the battery goes flat much faster''' || Normal. A Microdrive is a mechanical drive and draws more power than CompactFlash || Use solid-state CompactFlash unless you specifically need the drive's write endurance for swap.<ref name="openpsion" /> | ||
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| '''GPRS or high-current PC Card fails''' || Board revision. | | '''GPRS or high-current PC Card fails''' || '''Board revision, and Psion published the numbers.''' A main logic board change in '''September 2002''' raised the slot from '''300 mA to 800 mA'''<ref name="psionfaq">Psion Teklogix, netBook customer FAQ, hosted at [[Psion netBook Documentation]]. Psion's own PC Card slot current limits: 800 mA on the netBook after the September 2002 main logic board change, 300 mA before it, 200 mA on the Series 7. Also confirms the Series 7's 133 MHz clock and ROM-resident operating system.</ref> — which is what makes GPRS cards such as the Option GlobeTrotter work || Check the manufacturing week in the serial number. Psion's September 2002 date and the community's '''revision 10, week 35 of 2002''' are the same event, so the serial slip is a reliable predictor.<ref name="lindsay" /> See the [[Psion Series 7 Troubleshooting Guide]] for the modem current workaround. | ||
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| '''Combined modem/Ethernet card unreliable''' || Documented as the most problematic class of card — ironically including Psion's own DACOM 56K/Ethernet || Use a single-function card.<ref name="openpsion" /> | | '''Combined modem/Ethernet card unreliable''' || Documented as the most problematic class of card — ironically including Psion's own DACOM 56K/Ethernet || Use a single-function card.<ref name="openpsion" /> | ||
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| '''RAM (board-level)''' || For SMD-capable hands || Two unfitted DRAM sites exist on the board; use low-power parts, since the DRAM is powered continuously.<ref name="lindsay" /> | | '''RAM (board-level)''' || For SMD-capable hands || Two unfitted DRAM sites exist on the board; use low-power parts, since the DRAM is powered continuously.<ref name="lindsay" /> | ||
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| '''PC Card power capability''' || '''No''' || A property of the board revision. A revision 7 board will not become a revision 10 one.<ref name="lindsay" /> | | '''PC Card power capability''' || '''No''' || A property of the board revision: 300 mA before September 2002, 800 mA after<ref name="psionfaq">Psion Teklogix, netBook customer FAQ, hosted at [[Psion netBook Documentation]]. Psion's own PC Card slot current limits: 800 mA on the netBook after the September 2002 main logic board change, 300 mA before it, 200 mA on the Series 7. Also confirms the Series 7's 133 MHz clock and ROM-resident operating system.</ref>. A revision 7 board will not become a revision 10 one.<ref name="lindsay" /> | ||
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| '''Screen cable clamp''' || '''No, practically''' || Soldered to the motherboard; breaking it means a donor board. | | '''Screen cable clamp''' || '''No, practically''' || Soldered to the motherboard; breaking it means a donor board. | ||
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== Related pages == | == Related pages == | ||
* [[Psion netBook]] · [[Psion netBook General Maintenance]] · [[Psion netBook Battery Service]] | * [[Psion netBook]] · [[Psion netBook General Maintenance]] · [[Psion netBook Battery Service]] · [[Psion netBook Documentation]] | ||
* '''[[Psion Series 7 Troubleshooting Guide]]''' — the shared hardware faults, in detail | * '''[[Psion Series 7 Troubleshooting Guide]]''' — the shared hardware faults, in detail | ||
* [[Psion netBook Pro Troubleshooting Guide]] | * [[Psion netBook Pro Troubleshooting Guide]] | ||