B&K Precision 1686A - Manual - Manual (Page 16)

16
MAINTENANCE
3. Adjust Trimmer VR5 so that the meter pointer on the A
meter lines up with the 10 amp mark.
4. Remove the multimeter in series with the load, and reconnect
it in parallel with the load to measure voltage (set to 20 DCV
Range).
5. Adjust Trimmer VR2 fully counter clockwise, looking at the
front of the unit.
6. Re-adjust the power supply front panel VOLTAGE control
for a reading of 14.0 ± 0.5 volts on the multimeter if
necessary.
7. Adjust the resistive load for a reading of 15 amps on the
unit’s A meter scale.
8. Adjustable Trimmer VR2 clockwise unit the output voltage
read on the multimeter drops by 0.05 to 0.20 V.
INSTRUMENT REPAIR SERVICE
Because of the specialized skills and test equipment required
for instrument repair and calibration, many customers prefer to
rely upon B+K Precision for this service. We maintain a network
of B+K Precision authorized service agencies for this purpose.
To use this service, even if the instrument is no longer under
warranty, follow the instructions given in the SERVICE
INFORMATION section of this manual. There is a nominal
charge for instruments out of warranty.