Ricoh C211 Service Manual page 557

1-6. Adjusting The White Level
A : 2.0 t 0.1 v --- SS950
1.9 ~ 0.1 V --- SS830
Purpose : To set the white level so that the background of the test chart is not copied.
Method :
1. Position the test chart so that the background area (white area) of the test
chart can be read.
2. Press the Print Start key (Start key: SS830) to turn on the fluorescent lamp.
3. Adjust VR 600 on the A/D conversion PCB so that the maximum level is 2.0+
0.1 v (1.9+ 0.1 v : SS830).
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