Minolta X-300 - Page 23

Wi Release magnet attraction check
W Measuring instruments : Constant voltage D.C power supply (Model 524B, E-1, E-2)
: Dial tension gauge (500g. 300g)
Hi Checking procedure
Fig. 1 Attraction BFig.2 Attraction
Creme
Serine
scale
(5000
a
LJ
J
Temsion gauge
Standard | 150g or more
® Attraction check------As shown in Fig. 1. set a tension gauge to the release magnet, and then
check the value 3 times when the contact piece separates.
(If a tension gauge of more than 270g is not available, a spring scale
of about 500g can be used instead as shown in Fig. 2)
Fig. 3 Separation voitage
Separates at 1.8V
Standard
or less
@ Separation voltage check---As shown in Fig. 3. connect to a D.C power supply and check to
see if the contact piece separates at 1.8 V or less.