ISHIDA BC-300 Service Manual page 47

(1) A/D Initial Value Setting
A/D Initial Value Setting
Press ZERO.
The A/D conversion value is displayed in
the unit price column. Check that the value
is 2000 ±1. If it is, perform span adjustment
as described below. If the value is not 2000
±1, press ZERO again.
Span adjustment
Place a 30 lb span weight on the weigh
platter. The A/D conversion value is
displayed in the weight column. Check that
the value is 30000 ±2. If it is, perform data
registration as described below. If not
30000 ±2, press TARE, remove the span
weight and perform A/D Initial Value Setting
again.
Data Registration
This operation writes data into E
Remove the span weight, then remove the
weigh platter. Press the switch as shown
in the diagram at right.
Note: Calibration data are stored on the
A/D board. The BC-3000 does not
require calibration if the main CPU
board is replaced.
CAUTION!
Do not use a screwdriver or other metal
tool to press the switch.
BC-3000 • Service Manual • Rev. 1
2 ROM.
Chapter S5. Test Mode
S5 - 3