Acorn Risc PC 700 Maintenance Guide: Difference between revisions
PSU: permit safe recap/servicing of the mains PSU for restoration; strengthen lethal-shock warnings (replace exchange-only/do-not-open wording) |
PSU: permit safe recap for restoration; strengthen lethal-shock warning (final wording cleanup) |
||
| Line 41: | Line 41: | ||
| NiMH battery (BT1) || Lost config/clock; corrosion || Clean, repair tracks, replace cell | | NiMH battery (BT1) || Lost config/clock; corrosion || Clean, repair tracks, replace cell | ||
|- | |- | ||
| Mains PSU module || Dead, random resets, fan/thermal issues || Check rails and fan; | | Mains PSU module || Dead, random resets, fan/thermal issues || Check rails and fan; recap the PSU (discharge first) or fit a known-good supply | ||
|- | |- | ||
| On-board fuses FS1/FS2 || A subsystem dead with rails present || Check FS1 (2 A) and FS2 (800 mA) continuity | | On-board fuses FS1/FS2 || A subsystem dead with rails present || Check FS1 (2 A) and FS2 (800 mA) continuity | ||