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Conference giadev::decstation

Title:DECstation PC Conference
Notice:register note 2, see notes 3 & 4
Moderator:TARKIN::LININD
Created:Tue Jan 10 1989
Last Modified:Fri Jun 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:7470
Total number of notes:34994

7426.0. "CMOS Clock losing time" by NNTPD::"[email protected]" (Courtney Brunt) Tue Apr 29 1997 02:07

Hi,

I am workng on a call where my customer has a LPX 466 that loses 25mins 
over a 7 day period. One might say this is a bit picky, but never the less, 
it is frustrating the customer. This is only started happening since I
replaced 
the system board a couple of months ago. Any ideas would be greatly
appreceiated.


Regards
Courtney Brunt
MCS NZ
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7426.1TARKIN::LINBill LinTue Apr 29 1997 07:1218
    re: NNTPD::"[email protected]"
    
    Does the system lose time with the power on or with the power off?
    This matters because with the power on, the system clock is kept
    by the operating system.  With the power off, the battery backup
    for the CMOS ram is also keeping the clock running.
    
    Potential problems if losing time with system on:
    1) software problem - some programs are stealing clock interrupts
    2) hardware problem - bad crystal
    
    Potential problems if losing time with system off:
    1) bad battery
    2) bad crystal
    
    You'll have to do further analysis.
    
    Bill
7426.2NNTPD::"[email protected]"Steve KanowjetskiThu May 01 1997 20:4917
I had the same problem, when the system was running NT. I replaced up to 3
system
boards... and guess what ? The last one fixed it.....

There was a bunch of suspect Dallas RTC's that maybe on the system board that
you 
put in. We identified it by when it was manufactured.

If this is Netware then you may need to use TIMESYNC.NLM. This also fixed some

issues regarding timing.

Steve Kaniowski
Region Support
Australia

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