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ASAHI PENTAX 6x7 Service Manual page 87

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4-4-16
1
SW adjustment
The operation
of the power
SW and ''B" SW
is shown
in Chapter
2.
Adjustment of the contact points (power SW,"'B'" SW,
FP SW and
X SW) is explained here.
Cleaning
of the contact points
Use the solution (ether70%, alcohol 30%)for the cleaning,
and
apply very
small amount
of Electro
Lube(mentioned
elsewhere)
to
the contact points after
cleaning.
Avoid
touching
these
contact
points with your finger.
Power
SW
1
Power
SW must
be turned
''ON" as soon as the Release
plate
(B70) has been pushed.
This
adjustment
process
is not usually
required,
2
SW actuator
pin on Diaphragm
checker
hook(D50)
must
turns
ON'' the SW,
when the hook receptacle
slips off the hook and rea-
ches the range
shown
in Fig. 4-53.
For the adjustment, bend the
"'*""marked portion of the SW plate.
3
Whenever
your finger is off the release
plate,
the power
SW
must
turn
"OFF", if the hook receptacle
has not slipped off the
hook,
D50
"
turn-ON"
range.
0.3mm
Timing SW
( cocked
condition
)
uB
SW
"B'' SW must
be turned ''OFF"', as soon as the Release
plate has
been pushed,
and must
be turned
''ON"' firmly when your
finger is
off the plate.
Assure
that
a more
than 0. 5mm
clearance
remains
on the contact in
OF F-condition.
Timing
SW
Adjust the timing SW
contact plate, so that 0.2~0.3
mm
clear-
ance
remains
between the lever and
cam
of the timing SW,
when
the shutter is cocked.
Refer
to Fig. 4-53.
FP SW
Lower
SW plate must
contact
the actuator
pin on the
lst inter-
mediate
lever.
Adjust the clearance
of the contact
points to 0.5mm.
However,
optimum
clearance
varies
case by case, according
to Time-
lag-adjustment.
Refer to Fig. 4-53.
xX SW
Assure
that the SW turns
"ON"
or "OFF"
firmly.

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