Re: [Leica] M6 electronics

[Ken Wilcox <wilcox@umcc.umich.edu>]

Don:

I'll bow to your expertise on this. This piece is from a 1990 M6. My
repairer referred to a bad "chip" (defective in many cameras apparently)
and replace it with the current and different part.

The metering being so simple doesn't seem like it would really need a
computer does it!

Cheers!

kw

>Ken,
>
>I have never taken an M6 apart.  I'm speculating
>based on the time period it was designed, and
>what other cameras from that era are like
>inside (some of which I have had apart).
>
>I till suspect the IC is a voltage regulator.  The light
>meter would also require a few simple electronics
>which could be in this same package.  I don't know
>for sure.  It is unlikely the chip is custom made for
>Leica (at least when first designed).  That means
>there are probably legs on the chip that are unused.
>
>My only point is that, given the time period of the
>M6 design and early manufacture, it is not possible
>the device you saw is a RAM chip.  In 1970, computers
>were HUGE!
>
>;-)  don ferrario
>
>-----Original Message-----
>From: Ken Wilcox <wilcox@umcc.umich.edu>
>To: leica-users@mejac.palo-alto.ca.us
><leica-users@mejac.palo-alto.ca.us>
>Date: Tuesday, June 30, 1998 10:19 AM
>Subject: Re: [Leica] M6 electronics
>
>
>>Don:
>>
>>My very elementary electronics knowledge says that a diode has
>only two
>>(di) electrical connections. This thing has 28 of them. Am I
>really that
>>far off on my understanding of electronics?
>>


- ----
Ken Wilcox                             Carolyn's Personal Touch Portraits
LHSA, MEA, LAW                      preferred---> <wilcox@umcc.umich.edu>
                                                     <kwilcox@gfn.org>