Minolta XE - Confirmation of Operation of Diaphragm (Av) Sliding and ASA (Sv); 1. Adjustment of diaphragm (Av) resistance values; 3. ASA (Sv) check

37
WConfirmation of Operation of Diaphragm (Av) Sliding
and ASA (Sv)
@Measuring instruments:
: Digital Tester (Type 2507) or ohmmeter
: Standard lens (50mm F 14 )
WStandard value: 300+500, at F 1.4 60+200, without lens.
WAdjustment procedures:
ASA connecting pin
Adjustment of diaphragm (Av) resistance values.
Connect lead wires “Black” and “Orange” ASA diaphragm rub resistor (0232) as shown in the
figure below, set the lens aperture at F 1.4 and by means of the diaphragm adjustment pulley
(4104), adjust the resistance to the standard value (300+50)
. Diaphragm (Av) resistance value check.
Operate
the
diaphragm
ring
and
check
that
no
“leap”
or
“stalemate”
in
resistance
value
change
is observed.
Make
sure
that,
if
the
diaphragm
is
returned
slowly
or
quickly
back
to
F
1.4
from
outside
of
F 1.4, the resistance value remains
within the standard value.
Remove
the
lens and check if
the resistance value remains 60+200.
. ASA (Sv) check
Connect
lead
wires
“Black”
and
“Yellow”
of
the
ASA
diaphragm
rub
resistor
(0232)
as
shown
in
the
figure
below,
attach
the
exposure
correction
dial,
operate
ASA
connecting
pin
and
make
sure
that
no
“leap”
or
“stalemate”
exists
in
resistance
value
change.
Standard lens
Diaphragm adjustment pulley
Digital tester (Range: 9)
Black —