SERVICE PROGRAM MODE
B121 Series/B259 Series 5-36 SM
4901
SBU White Level Adjustment
Black Display-Error [0 = Normal / 1 = Error] 4901 1
Displays the return code of the black-level adjustment. When an error is detected,
SC143 or SC145 is generated.
Black Feedback-EVEN
[0 ∼ 8191]
4901 2
Displays the feedback value of the even channels given by the SBU. Normally, the
value is 1, 2, 3, ..., 8188, 8189, or 8190. However, machine may operate normally
even when the value is 0 or 8191.
Black Feedback-ODD
[0 ∼ 8191]
4901 3
Displays the feedback value of the odd channels given by the SBU. Normally, the
value is 1, 2, 3, ..., 8188, 8189, or 8190. However, machine may operate normally
even when the value is 0 or 8191.
Black Display-Target
[0 ∼ 63 / 10 /step]
4901 4
Displays the target value for the black-level adjustment executed during machine
initialization. Normally, the value is 10. Other values indicate that the adjustment
has ended unsuccessfully.
White Target
[0 ∼ 511 / 511 / 1/step]
4901 5*
Displays the target value for the white-level adjustment.
White Result
[0 ∼ 511 / 0 / 1/step]
4901 6
Displays the result of the white-level adjustment.
White Display-Error [0 = Normal / 1 = Error] 4901 8
Displays the return code of the white-level adjustment. When an error is detected,
SC143 is generated.
White Display-Overflow [0 = Normal / 1 = Error] 4901 9
Displays a return code of the white-level adjustment. The code "1" (error) is
returned if the adjustment result is not in the range of the values in SP4-901-6.
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