Minolta XE - Confirmation of Chattering of SW. 4; Confirmation of Mg attracting voltage

49
(2)Confirmation of Chattering of SW. 4
Measuring instruments:
:081 standard circuit tester (Model SC-1)
: Digital time counter (Model TC-1)
WStandard value:
1/1000 | 1.0+0.05ms
WiChecking procedures:
1. Incorporate the shutter block into the body and connect lead wires of SW. 4 to the 081 standard
avometer as shown in the figure below.
Setting of measuring instruments
* Digital time counter * 081 standard circuit tester
SEP-COMSW: SEP SS SEL: S 4 CAL
Trigger level A-CH: +1(V) S 4 SW: 1/1000
B-CH: + 1(V)
Trigger slope A-CH: +
8 Q le
8 ? : 8 ot
= =r
SW4
(Yellow)
eal
oa
3
B-CH: —
081 standard circuit tester
2.
Check
that
measured
values
of
1/1000
and
1/60
are
within
the
standard.
[3] Confirmation of Mg attracting voltage
MMeasuring instruments:
: 081 standard circuit tester (Model SC-1) or constant-voltage DC power source (Model E-1 or E-2)
: Digital tester (Type 2507) or DC ammeter
WStandard value:
: At 1.68V, magnet should be attracted
: At 1.67V, magnet may not be attracted
M@Checking procedures:
1. As shown in the figure below, connect lead wires of Mg of the shutter block, release the shutter
at power source voltages of 1.68V and 1.67V to see if the standard is satisfied.
& ic Digital time counter
8 5 8 Ole
=r
a
A aS
Mg (Black) emeeow.}
oo 0c ©
@q@ 009
i \ Digital tester (Range: V)
081
standard
circuit
tester