Black Level Adjustment; Shading Adjustment - Ricoh C211 Service Manual

1.2 BLACK LEVEL ADJUSTMENT

TP604 standard black level
Adjust VR601 until the black level at TP603 is the same as the standard
black level (1.4 V±0.03 V).

1.3 SHADING ADJUSTMENT

Adjust the shading plate position until the wave is shaped as shown above.
SM
TP603 wave shape
B/A ≥ 60%
5-3
TP603 wave shape
TP604 standard black level
A
B
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