Roland Series 300 Repair Manual page 7

4. WhiJe the shutter is uncocked. the blade latch
holds the timing swilOh (S2) open
(FiJI.
I-n
Cocking
the
shutter causes
the 5eCUring of the
latch pin, and thereupon the blade latch allows
the
sptill,ll-Ioaded timing .witch to close, an
ac ­
tion necessary to start electronic circuit functions.
TIMING
SWITCH
(S2)
A further push on thC' cocking arm Jatches it in
th~'
.;o.... l.,eu
pOSltion
(Fig. 141.
~
Wh,'n <;.0 wcured. the ovef{ravel arm is butted
flrmh ;q:;.un<1I
the shoulder of the cocking
pin,
lD turn, !or':lng
{he clOsing blade tightly against
Ih~ ;"vq'h~r
ot the
electromagnet. With the over­
IrJ\~'i.Jfnt Io.:k~u,
the associated spring is.
~lr~·!,·huL
AI thl...
pOInt. the shutter is c;;ocked:
Ih~'
Itll"rlnl! 1,0,111 hl' . . . .
omplcted
by
the
return
to
r\.·~l
rn.,1l1<1ll
nl Ill'.' ... trained spring.
{', ·lnpl'lll.!; J~'IHln 1;'q1. I-;;II~ begun by pushing
()'~
Ill, dlUU',r fv!l.':.!\I.' hutlOn. This is part
ofa
~J~I,·
,j ....
~·!',r!: "'vll, 1mO Ih . . . . hody orth': Carn­
er;.;:.
\\h,tfl
tlw
hUHnn I~
pt"L'SSCO.
the shutter­
rd . . . . ..:,~'
{l!" h
lor..:.:o >1!';JlnSt the battery switc;;h
lSI j\.I<,..
II1~
It
J110 tnpplnj!
th~' ~Iidt;
latch.
q(j'lfi~
SJ
~"Ompkh:<'
the t:ircliit.
operates the
<kdFIIll.":';!;,'l
~
111' . :11 nllw !lokI-.. Ih" do\inf! blade.
ARM
"""""'"
.RM
SHUTTER
<:;;;Jf--
REt-EASE
8ATTliflY
SWITCH
IS"
MAGNET
BUTTON