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GX-A/GF-A Maintenance manual
Page 33
6.7 Coarse Operation Check & Adjustment
1. A/D count check
The A/D count can be checked in the check mode.
Follow the procedure below to verify the A/D values for weight data (D0) and
temperature data (T1).
Step 1. Display the data adjustment mode
d-d5p
after getting into check mode shown on
page 28,29.
Step 2. Press the PRINT key to display
XXXX
. (D0 data, weight A/D count)
Step 3. Check that the pan assembly is installed properly. Verify that the count without load
(zero point) is within the range shown in the table below.
Note: If the zero point is not within the specification, adjust it by jumpers (JP2, JP3
on the main board).
Opening JP2 makes Zero point +2500(D0) and opening JP3 makes Zero point
+2500(D0).
Step 4. Place the mass in the table below on the pan. Read the count with load (full).
Subtract the count without load from the count with load to obtain the span value.
Verify that the span value and full value are within the range shown in the table below.
In the D0 data mode (Weight A/D count), press the SAMPLE key twice to display
X.XX (D2 data). Verify that the dispersion is within the specifications as below
when the mass is placed on the pan.
Model
Masses
Zeropoint
(D0)
Full (D0)
Span (D0)
Dispersion (D2)
GX-203A/303A/403A
603A/1003A/1603A
GF-123A203A/303A
403A/603A/1003A
1603A
1600g
1100~4000
9000
3700
~
5000
MAX-MIN:
0.002g/5seconds
GX-2002A/3002A/4002A
6002A/10002A
6001A/10001A
GF-1202A/2002A/3002A
4002A/6002A/10002A
6001A/10001A
10kg
1100~4000
~9000
3000
~
4200
MAX-MIN:
0.02g/5seconds
MAX-MIN:
0.1g/5seconds
Step 5. In the D2 data mode, press the SAMPLE key three times to display
XXXXXX
.
(T1 data)
Step 6. Verify that the count at room temperature (15-25°C) is within the range shown in the
table below.
Absolute value (T1 data)
Dispersion (T1 data)
2400000-2800000
MAX-MIN: 40 counts/5 seconds