IBM 5150 - Circuit diagram for IBM 63W power supply unit (PSU)
Opening the 5150's PSU may expose you to hazardous voltages and currents.
Do not assume that those hazards will disappear shortly after disconnecting the PSU from mains (house) power.
Note that in the supply lifetime of the IBM 5150, there were variations of the PSU. Some known differences follow:
• 120V AC versus 220V AC
• AC powered fan versus DC powered fan
There may be many more differences.
IBM did not provide circuit diagrams of the PSU in the 5150 manuals. Accordingly, circuit diagrams are hard to come by.
Click on this
for a circuit diagram of a particular variation.