Rowe BC-1200, Field Service Manual And Parts Catalog

Page: 60 / 217

Section 3: Routine Service
25238802 3 - 9
Coin Counting Phototransistor (Detector) Check
Figure 3-5A. Sensor Check
Figure 3-5B. Sensor Check
1. Turn the bill changer
POWER
switch
OFF
.
2. Remove the black plastic cover from the
phototransistor and connect the Common meter
lead to the metal dispenser backing plate as shown
in
Figure 3-5A.
3. Connect the + meter lead to the blue wire. (See
Figure 3-5A.)
4. Turn the
POWER
switch
ON
and check that the
LED’s are lit. The meter should indicate between
4.7 and 5.2 volts DC.
If the meter indication is not correct, the voltage regulator
VR801 on the power supply board (Part Number
70036501) may need replacement.
5. If the meter indication in Step 4 is correct, continue
this procedure. If the voltage was not between 4.7
and 5.2 volts, repair the malfunction before you
continue.
6. Move the + meter lead to the orange wire on the
phototransistor as shown in Figure 3-5B . The
meter should indicate between 3.5 and 5.0 volts
DC.
If the voltage is less than 3.5 volts, replace the
phototransistor board assembly with Part Number
25175702.
= Blue Wire
= Orange Wire
= Blue Wire
= Orange Wire