Perform the following steps.
- Click on Menu>Service>Special>Input Password(6868)>Detect window>HGB-VAL.
- Click ‘R’ button and check the HCG-VAL value. It should be around 3300 ± 100.
- If the value is lower than 3300, increase HGB value and click ‘W’ to save the new parameter.
- Click the ‘R’ button again to check the HGB-VAL value again.
- If HGB-VAL value is still not within range, repeat step 3 until HGB-VAL is in range.