| Title: | DEChub/HUBwatch/PROBEwatch CONFERENCE |
| Notice: | Firmware -2, Doc -3, Power -4, HW kits -5, firm load -6&7 |
| Moderator: | NETCAD::COLELLA DT |
| Created: | Wed Nov 13 1991 |
| Last Modified: | Fri Jun 06 1997 |
| Last Successful Update: | Fri Jun 06 1997 |
| Number of topics: | 4455 |
| Total number of notes: | 16761 |
My customer asked me a strange question, and I couldn't give appropriate answer. Question is ... "Inside the Digital MultiStack System Stacking Unit, its circuit board has two power connectors. One is used but another is not used. Why are two connectors on the circuit board? " I checked it in the office, his mention is true. Extracting the circuit board from the Stacking Unit, two connectors are on. From outside we can see one power connector. We normally cannot see another connector blocked by plastic cover. Please let me know why there are two power connectors? Thanks in advance. Koichi
| T.R | Title | User | Personal Name | Date | Lines |
|---|---|---|---|---|---|
| 3216.1 | Always tell the truth ;^) | NETCAD::HERTZBERG | History: Love it or Leave it! | Tue Jan 30 1996 09:18 | 14 |
Tell the customer to mind their own business... and don't be ripping
the circuit boards out of our products!
The real answer is that over the years, there have been two ways to
wire power connectors; one for a 5V-only brick and another for a 5/12V
brick. During development of the rear cover, there was a time we
thought we would support both wirings. This is why both connectors
appear on the board. We decided to minimize confusion by only
supporting the 5/12V brick (pluggin in the 5V-only brick will not harm
anything... it just won't work). The physical connector for the
5V-only brick has been left on the design because the ECO to remove it
would cost more than quite a lot of connectors.
Marc
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| 3216.2 | TKOV51::NAKANO | Koichi Nakano/NPB/Japan | Tue Jan 30 1996 23:41 | 5 | |
I'll tell him the reason and strongly recommend him to do so. :-) Thank you. | |||||
| 3216.3 | NETCAD::HERTZBERG | History: Love it or Leave it! | Wed Jan 31 1996 11:10 | 7 | |
I spoke a little too soon.
Actually, the units mentioned in the base note were prototypes supplied
for evaluation purposes. Production units ship with only the 5/12V
power connector installed on the circuit board.
Marc
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