Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.sys.laptops > #2025 > unrolled thread

Service Manuals for the Ye Olde T1100 & T1200

Back to article view | Back to comp.sys.laptops

Contents

  Service Manuals for the Ye Olde T1100 & T1200 Computer Nerd Kev <not@telling.you.invalid> - 2013-08-19 07:01 +0000
    Re: Service Manuals for the Ye Olde T1100 & T1200 Pen <nospam@spam.none> - 2013-08-19 07:15 -0400
      Re: Service Manuals for the Ye Olde T1100 & T1200 Computer Nerd Kev <not@telling.you.invalid> - 2013-08-21 08:14 +0000
    Re: Service Manuals for the Ye Olde T1100 & T1200 Computer Nerd Kev <not@telling.you.invalid> - 2013-10-24 23:31 +0000

#2025 — Service Manuals for the Ye Olde T1100 & T1200

Just a stab in the dark.

I'm fixing up a couple of old Toshiba laptops (T1100 and T1200) 
and as usual it would help to have the proper docs. In 
particular anything about the T1200's PSU would be helpful 
because it seems to be the problem there. For a PSU though, the 
thing sure is complicated.

In my searches, I've seen service manuals for sale at book 
websites. But I paid much less for the computers than those 
manuals with postage.

-- 
__          __
#_ < |\| |< _#

[toc] | [next] | [standalone]

#2026

On 8/19/2013 3:01 AM, Computer Nerd Kev wrote:
> Just a stab in the dark.
> 
> I'm fixing up a couple of old Toshiba laptops (T1100 and T1200) 
> and as usual it would help to have the proper docs. In 
> particular anything about the T1200's PSU would be helpful 
> because it seems to be the problem there. For a PSU though, the 
> thing sure is complicated.
> 
> In my searches, I've seen service manuals for sale at book 
> websites. But I paid much less for the computers than those 
> manuals with postage.
> 
Here's the T1200 manual.
http://data.manualslib.com/pdf2/34/3303/330217-toshiba/tseries_t1200.pdf?96d7f046f04ce5c47ccbf7aca2820904

[toc] | [prev] | [next] | [standalone]

#2027

On 19 Aug 2013, Pen wrote:

> Here's the T1200 manual.
> http://data.manualslib.com/pdf2/34/3303/330217-toshiba/tseri
> es_t1200.pdf?96d7f046f04ce5c47ccbf7aca2820904 

Actually that's the specs sheet, which is the one thing I did 
already have (I got it in text form from here: 
http://bitlink.ca/Library/Toshiba/).

I'm looking for the service manuals (AKA Maintenance Manual). 
I guess the User Manual would be interesting too, but it isn't 
my aim at the moment. If someone has the T1200 Service Manual, 
it would be great if they could scan the pages on the PSU.

-- 
__          __
#_ < |\| |< _#

[toc] | [prev] | [next] | [standalone]

#2093

On 19 Aug 2013, Computer Nerd Kev wrote:

> In particular anything about the T1200's PSU would be
> helpful because it seems to be the problem there. For a PSU
> though, the thing sure is complicated.

On the off chance it is interesting to someone...

I looked deeply into PSU troubles with Toshiba Laptops. It 
seems they kept using similar (incredibly over-complicated, in 
my opinion) power supply designs into the early 90s. They all 
have a microcontroller on-board that decides on every startup 
whether to give the computer power or just blink an LED in 
disgust. On newer laptops where power comes on for a moment, 
but then fails (they apparently work from battery though), 
replacing a filter capacitor apparently often cures the 
problem .

Webpages on the PSU failures in later laptops:
http://www.electronics.dit.ie/staff/bredmond/tosh486fix/
http://www.vobarian.com/toshibaProblem.html

My faulty T1200 wouldn't even give a sign of life (though it 
worked with a PSU from my other, working T1200), it would just 
flash the power LED from the beginning. I replaced the filter 
capacitors (which were different to the one in the later 
laptops) with new (slightly higher value (2200uF), as that's 
what I had) ones and now it behaves more like the later 
laptops with PSU problems. However I did find that if I 
switched the power on and off in a certain pattern, it would 
come to life and work for as long as I wanted (usually).

Feeling a bit sick of wrestling with the capacitors which only 
barely fit and the annoying coating they put over the PCB that 
messes up with my soldering and smells terrible, I decided 
that was good enough.

-- 
__          __
#_ < |\| |< _#

[toc] | [prev] | [standalone]

Back to top | Article view | comp.sys.laptops

csiph-web