alpibucky
Guest
Wed Apr 20, 2011 6:03 pm
Hello,
Does anybody have a datasheet of this IC.
My 22-193 readings are wrong and the BATT indicator appears
continuously, but the batteries are good.
With my kind regards,
Alpibucky
ehsjr
Guest
Wed Apr 20, 2011 9:42 pm
alpibucky wrote:
Quote:
Hello,
Does anybody have a datasheet of this IC.
My 22-193 readings are wrong and the BATT indicator appears
continuously, but the batteries are good.
With my kind regards,
Alpibucky
Could it be a dual comparator, NJM2903D ?
The RS parts list seems to indicate that as a possibility.
If the chip is a comparator, the circuit is likely dividing
the battery voltage, and comparing the result to a reference.
That said, examine the battery connections, and circuit path
from the battery to the PCB's. More likely the problem
is in the path somewhere, than a defective IC.
Ed
Franc Zabkar
Guest
Thu Apr 21, 2011 4:24 am
On Wed, 20 Apr 2011 20:03:38 +0200, alpibucky <alpibucky_at_voila.fr> put
finger to keyboard and composed:
Quote:
Does anybody have a datasheet of this IC.
My 22-193 readings are wrong and the BATT indicator appears
continuously, but the batteries are good.
AFAICT, the SXC1901F was manufactured by Seiko Instruments.
FWIW, the following document lists a service manual, cat# 10824373, NP
Part # MS2200193.
Parts List for 220-0193 AUTORANGING FOLDING DVM:
http://support.radioshack.com/support_meters/doc21/21609.htm
- Franc Zabkar
--
Please remove one 'i' from my address when replying by email.
Shaun
Guest
Tue May 17, 2011 10:27 pm
once those Radio Shack multimeters go astray, that is usually it for it. Go
buy a fluke.
Shaun
"alpibucky" wrote in message
news:4daf1ff8$0$14246$ba620e4c_at_news.skynet.be...
Hello,
Does anybody have a datasheet of this IC.
My 22-193 readings are wrong and the BATT indicator appears
continuously, but the batteries are good.
With my kind regards,
Alpibucky
