Rice Lake Scout Pro Series Portable, Ohaus - Service Manual - Manual (Page 15)

3-1
CHAPTER 3 REPAIR PROCEDURES
3.1 REPAIR PROCEDURES
This section of the manual contains detailed disassembly procedures of the balance. Refer to Figure
5-1. Before disassembling the balance, it should be noted that components inside of the balance are
delicate and need to be handled with care. It is imperative that the Transducer (8) should never be
subjected to any excessive torque, stress, or abrasion as damage may result. Once the balance has
been disassembled, any small scratch or abrasion made to any of the Individual Strain Gauges will
render the entire Transducer (8) unusable. The Printed Circuit Board (9) contains integrated circuits
which employ CMOS technology, therefore, caution must be exercised so as not to subject any of these
components to static electricity discharge. When servicing, a wrist Ground Strap with a 10 Megohm
series resistor to earth ground is highly recommended. The Printed Circuit Board (9) should be
handled by grasping the edges only and never placing fingers on any of the runs or traces.
3.1.1 Cover Removal
To disassemble the balance, proceed as follows:
1. Turn the balance off and if using an AC Adapter, disconnect it from the balance.
2. Remove the Pan (1, 2 or 3) from the balance. Pan sizes and shapes vary.
3. Place the Shipping Lock in the locked position.
See Figure 3-1. This will help protect the
Transducer.
12 Battery Compartment Cover
Cover Screw
Cover Screws
4. If a battery is being used, turn the balance over and remove the Battery Compartment Cover
(12) as shown in Figure 3-2.
Figure 3-1. Shipping Lock.
Figure 3-2. Bottom of Balance.
Locked
Position
Pointer
Unlocked
Position