4-14
CHAPTER 4 MAINTENANCE PROCEDURES
4.3.1.3
Transducer (8) Replacement - 200 Gram Models (Cont.)
1. Disassemble the balance in accordance with the procedures in paragraph
4.3.1.
2. Turn the balance over and loosen evenly the two Allen head captive Machine
Screws (22) (until free) which secure the Transducer (8).
3. Turn the balance over again. While facing the Transducer (8) remove the
Flexible Cable from the connector on the Printed Circuit Board (4) coming
from the Transducer (8).
4. The Transducer (8) should be checked before replacement. Figure 4-10
illustrates the bridge circuit and Figure 4-11 illustrates the pin connections
on the Transducer cable connector.
5. Ensure that the Up Stop clears the Mounting Plate, then remove the
Transducer (8) from the Mounting Plate (7). (The Mounting Plate (7) is not
field serviceable, do not try to remove this plate).
6. Install the new Transducer (8) Into position on the Mounting Plate (7).
7. Hold the Transducer (8) in place and turn the balance over and secure the
Transducer (8) with the two captive Screws (22) on the bottom of the bal-
ance.
8. Turn the balance over again. While facing the Printed Circuit Board (4), insert
the flexible cable from the Transducer (8) into the connector provided for it,
on the Printed Circuit Board (4).
9. Locate IC U6 on the Printed Circuit Board (4) and remove the IC. Insert the
new IC in the socket. IC U6 contains calibration data.
.
FLEX PCB
EXCITATION (+ 5V)
HIGH OUT
OPEN FOR
HALF BRIDGE
BEAM GROUND
THERMISTOR OUT
ANALOG GROUND
1
2
4
6
5
3
+
+
-
-
C1
C2
EARTH GND
6
5
4
3
2
1
TOP VIEW (METAL TRACES SHOWING)
Figure 4-10. Bridge Connections.
Figure 4-11. Transducer Cable Connector.
Summary of Contents for SCOUT
Page 1: ...OhausCorporation 29HanoverRoad FlorhamPark NJ 07932 0900 ELECTRONIC BALANCES SERVICE MANUAL TM...
Page 6: ...i v...
Page 10: ...1 4 CHAPTER 1 INTRODUCTION...
Page 38: ...5 2 CHAPTER 5 DRAWINGS AND PARTS LISTS...
Page 39: ...5 3 CHAPTER 5 DRAWINGS AND PARTS LISTS Figure 5 1 Exploded View of Balance 5 3 5 4...
Page 43: ...SCOUT ELECTRONIC BALANCES P N 300040 010 R1198...
Page 45: ...e e e...
Page 47: ......
