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View Full Version : Computime Q/T clock calendar partlist needed



Roman
January 4th, 2016, 04:14 AM
Hi !
I obtained an unpopulated clock calendar board as decribed in that manual http://www.classiccmp.org/dunfield/s100c/misc/ct102.pdf.
Is there anyone who can provide a partlist of that board, the schematic in the manual are partly unreadable. Especially the values of resistors and capacitors would be of interest.

Thank you in advance.

Roman

IBM_User
January 4th, 2016, 09:54 AM
This one? (http://www.ebay.de/itm/121832003598)

Chuck(G)
January 4th, 2016, 10:06 AM
The schematic looks pretty clear to me--what are you having problems with? Most of the capacitors and resistor values aren't overly critical.

But if it's the one shown in the ebay auction, I'd probably replace the cheap TI sockets. They were awful when they were new--I can't believe that they've aged like a fine wine.

Roman
January 7th, 2016, 07:26 AM
Hi,
yes it is this one.
I am not sure with R16 (20k?),R17 (100k?) and C8 (0,01uF?).

Roman

glitch
January 7th, 2016, 07:48 AM
From my Compu/Time board:

R16: 26.1 K (2% resistor, looks like a pulldown on the clock chip, can't imagine it's critical)
R17: 100 K
C8: not populated

This is a factory assembled board (came to me in the box with paperwork) that's been tested recently.

Roman
February 10th, 2016, 11:36 PM
Thank you all !
It works.

Roman