Introduction; Features; Span Calibration; Internal Calibration Procedure - KERN HCB Series Service Manual

3 Introduction

Features

3.1

Tare function

Display segment test function

Display Hold function (6 modes)

Negative value indication

Low battery indicator

Auto zero

Auto off function (selectable)

Zero Tracking selectable

Overload indication

Digital Internal calibration

Solder pads to prevent end user internal calibration

Operated by 3 x AA size alkaline batteries

4 Span Calibration

1. Turn scale on by pressing the [ON/TARE/OFF] key.
2. Press the [UNIT] key for 3 seconds. Display will show [CAL] and then the required
calibration weight.
3. Hang the standard weight onto the scale. Wait until display shows [
case [ E ] is display instead of [
or wrong calibration weight applied for calibration.
procedures.
4.1

Internal Calibration Procedure

1. Remove battery compartment door and the two screws inside. Disassemble the rear
housing of the scale.
2. Connect J1 on the PC board.
3. Install batteries. With scale on its weight position, turn scale on. Display will show the
internal counts. The reading shall fall into the range of 3000 to 5000. In case out of this
range, connect J9 to increase or decrease reading. Connect or disconnect J5, J6, or J7 to
adjust the reading to the required range.
4. Press [ON/TARE/OFF] key once. Display will show the required calibration weight. Hang
weight onto the scale accordingly until scale show [
5. Disconnect J1. Calibration completed. Check the accuracy at different weight.
6. Install the rear housing of scale with the two screws.
HCB-SH-e-1410
F ], this indicates a calibration procedure error, unstable
Reset the scale and repeat the
F ] and turn off.
F ] then turn off. In
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