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Does shutter
rotate at any
time?
Yes
Does shutter seam
to bind during
rotation?
Yes
Chain most
likely too tight or
bearing surface
sufficiently
worn
Yes
Adjust shutter
motor and or
replace bearings
and air tubes
F1
1
K1
K5
K3
D18
U5
15-2
Shutter Rotation Fault Tree
No
No
Check set screw
on shutter motor
gear and the
shutter position
switch
No
Possible faulty
shutter motor
Front View of Control Board
P1
12
E1
K4
K2
D13
D17
D15
D16
D14
Q2
Q6
Q4
Q5
Q3
Is the lamp lit?
Yes
Is LED #D17 lit
on PC Board
Yes
When LED #D17 is lit, check for
120VAC on #4 white and #6 red
on the terminal strip when
shutter should be rotating
Yes
Check for
120VAC at
shutter motor
Yes
Replace
shutter
Repair or replace
motor
wiring from
terminal strip to
shutter motor
P2
12
1
E2
J1
No
The shutter will
not open for an
exposure w/o
the lamp being
lit. Go to the
No Strike Fault
No
No
If LED #D17 is
lit, check for
120VAC at pins
2 and 4 at power
connector on PC
Board
No
Yes
Replace
PC Board
Repair or replace wiring from
PC Board to terminal strip
LED's
D18
Lamp Head Fans
D13
Power Supply Fan
D17
Shutter Motor
D15
High Relay
D16
Medium Relay
D14
Power Relay
94MS41 Rev. C1 S/W Ver 2.06
tree
No
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