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3053-3
A9X2
FILM OUT OF CASSETTE SENSOR B6 (FOC)
ML700 only (intermediate style version PN 9194416)
PURPOSE:
To set the sensitivity of the SENSOR to give correct output when it is covered by a FILM.
Important
The position of the FOC TRANSMITTER must not change after the adjustment is done. The
output of this SENSOR is most sensitive to position changes. Ensure that the SENSOR is not
touched by the EXIT DOOR.
1
.
Connect the DVM to the RECEIVER TEST POINTS (red and black).
2
.
Change the position of the TRANSMITTER PCB until the voltage is below 500 mV.
As the light distribution of the TRANSMITTER is not even across the illuminated area, it
might be necessary to tilt the TRANSMITTER PCB sideways a small amount. If it is still
not possible to achieve a voltage < 500 mV, then record the lowest voltage and
proceed with step 3, or else proceed with step 6.
3
.
Connect the GROUND LEAD of the DVM to TP 2 of PCB A9. Connect the positive
lead to the upper wire of RESISTOR R9 PCB A9. See figure 4-55.
4
.
Adjust R27 until the voltage is the minimum value reached in step 2 + 400 mV.
5
.
Connect the DVM to the RECEIVER TEST POINTS (red and black).
12/1998
TP8
8
TP7
11
14
TP3
Step 4. Cover SENSOR B6 with a FILM and adjust R27 to + 0.9 V
Step 2. Without a FILM the voltage should be + 0.7 V
TP6
TP5
U1
A9X2A
7
TP2
10
1
TP4
TP1
A9X4
figure 4-54
4-52
ADJUSTMENTS
+
-
-
+
TP9
KODAK AG, Stuttgart
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