@Colonel O'Neill
Thanks for the link. It wasn't actually the hardware maintenance manuals I was after (although they were good to have for future reference) but rather a full list of the service options that were available to buy for a T-Series in New Zealand.
I realised the simplest thing to do would be go through the motions of buying a machine and see the options available for sale

.
There's kind of a lot them so I've pasted them at the bottom of this post.
So now my question is can anyone tell me what you're actually getting when you buy one of the following

:
- x Year onsite (what if they can't fix the problem onsite - do you get a loan machine ? What promises do they make about how soon they'll arrive 'onsite' ?)
- xYr EXR Upgrade (what does EXR mean ?)
- "express repair" - is that offsite but faster than usual offsite ?
- "Upgrade to 2 yrs Onsite (NBD)" - what does NBD mean ?
- "TP Protection" - is that "ThinkPad Protection under another name ?
- "3 years hard disk drive retention" - what's that mean ? They promise to restore the contents of your drive ?
Would be grateful for an explanation of any of these terms.
For the sake of completeness here goes with the full list of warranty options for T-series on offer today in New Zealand
Base warranty
1. Base warranty: 1 Year Depot/Express Warranty [included]
Warranty services 1 Year
1.[add NZ$39.00] Upgrade to 1 year Onsite Upgrade to 1 year Onsite
2.[add NZ$95.00] TPad Std 1Yr EXR Upgrade to 1 Year ThinkPad Protection
3.[add NZ$131.00] TPad Std 1Yr EXR Upgrade to 1 Yrs ONSITE with 1 Yr ThinkPad Protection
Warranty services 2 Years
1.[add NZ$119.00] Upgrade to 2 years express repair
2.[add NZ$145.00] Upgrade to 2 years Onsite
3.[add NZ$281.00] TP - Upgrade to 2 yrs EXR (addn 1yr) + 2 yrs TP Protection (protection from accidental damage
4.[add NZ$305.00]TP - Upgrade to 2 yrs Onsite (NBD) (addn 1 yr with onsite technician) + 2 yrs TP Protection (accidental damage)
Warranty services 3 Years
1.[add NZ$245.00] Upgrade to 3 years express repair
2.[add NZ$360.00] Upgrade to 3 years Onsite Upgrade to 3 years Onsite
3.[add NZ$473.00] TPad Std 1Yr EXR Upgrade to 3 Yrs EXR with 3 Yr ThinkPad Protection
4.[add NZ$586.00] Upgrade to 3 yrs Onsite warranty (additional 2 yrs) with 3 yrs ThinkPad Protection (protection from accidental damages)
5.[add NZ$695.00] ThinkPlus upgrade from 1 year depot to 3 years depot + 3 years ThinkPad Protection + 3 years hard disk drive retention
Warranty services 4
1. [add NZ$450.00] Upgrade to 4 years Onsite