This is one of my service manuals from the days when i used to fix these for a living. 
Bought it new in 1988
Not seen inside one for 25 years, so time to let it go.

This is an exemplary service manual, very high resolution prints and large format circuits so there's no flipping back between pages to find out where the traces went. Truth tables listed for individual logic chips!
Unbelievably the waveforms of the sounds are included for calibraton and reference. Not all manuals are created equally!!

The manual is in great shape with no tears, coffee stains or annotations. The top left corner is a bit creased.
The A3+ diagrams are not damaged, and the colour is clear.

If you need any more pictures, then let me know.

Postage not cheap as it's fully insured.

Decluttering, so no returns. 
If you are unsure cme look at it first.
Can be viewed and or collected from Kings Cross.