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III - ELECTRONIC MODULES
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A.
MODULE OPERATION
t.
The Electronic Module is the heart of the
e1ectricweye, automatic exposure shutter. The
-
'basic principle of operation of all shutters is
identical - both mechanically and electrically_
The idea is to open the shutter. allow it to
re
main open, exposing the rdm. and shut
it
at a
precisely measured time increment. The shut
ter opens and closes at the precise time requi....
-
ed
by
the light conditions and the type of film
available. The operator has only to select the
type
of film bein, used and set the scene selec
-
tor;
the
rest is completely automatic.
2. The following is a compilation and
analy~is
of
infonnation necessary to repair or replace
com~
-
pOnents in any of the Electronic Modules used
in all Cameras of the
100.200
or
300
Model
Series.
3. The data
is
presented as
roll~:
the
assi~ed
Module Type number: a top view of compon
-
ent layout; a bottom view of the boord. show
ing solder connections: an Electrical Values
Table with part numbers; and an Electrical
Scbematic to facilitate troubleshooting and
-
circuit tracing.
4. Many of these modules are now out of
rroduc~
tiOn and are not stocked. However. with the
-
-
-
, . "
data herein. a satisfactory repair may
he made
by using a commercial equivalent.
if
the Pola·
roid part is
not
availab1e.
Thit;
\I.-ill
experlite
repair and permit of component rcplaccIT!l!!"L
rather than more costly. module exchlnj!c ..
saving
both
time and money.
S.
Seven
(7). of the si<teen (16) type.'
of
'dodules
previously
tabulated
t
may
be used
in:l J1it4
. Shutter - types
3~4-
6 - 9., 10- 11 :t'"!d I .....
These will he covered and
exp1ain~'(!
'" 11:':.111
in the
following breakdown of
ElectrnRl<.:
Modules bef!inning with Type 1, tbe ori2inal
362
Shutter module.
B.
MODULECLASSmCATION
1. _ n i c Module Type I
This(F~.
3·1. 3-2)
is
the
rust
module to ""
U"',
in tbe
original pack camera and is
included
here
lor
comparison and reference only. Complete
inf('lr~
mation~
including
electrical
and
mechanic"
timc
lions.. is
available in
the Repair Manual for 362.
366 and 374 ShutteB. published in May 1968.
The Eeetric;d values (PM'3.meten) of the
compotl~
ents are tDven in
the
foltow;ng uble (Fig. J..3l.
The electrical Schematic is shown in Fip,. 3-4.
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