Help with ICL power supply fault (Farnell SMPS)

[Tony Duell]

> 
> Tony Duell wrote:
> > Be warned that an inaccurate circuit diagram will drive you mad.
> 
> :-)
> 
> Not as bad as an inaccurate circuit diagram* produced by someone else, when 
> you don't have the physical PCB handy. Cue "how the heck does *that* ever 
> work?" hair-tearing moments...

Indeed. 

> 
> * manufacturers seem notoriously guilty for this, unfortunately.

Perhaps somebody can explain the PSU scheamtic in the TRS-80 Model 3 
Technicla Manual sometime. Note, I am not asking how the actual PSU 
works, I have my own, (more) accurate schamtic, and I understnad that. 
Just what the heck dows the manual show?

-tony