Ricoh A172 - Page 491

Tech Service Bulletin No. A172/A199 – 016
Page 8 of 17
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Confirming Development Bias Voltage
1. Enter SP Mode Special Features, page 1.
2. Turn Process control OFF, by selecting RESET, for Process Control Self Check as illustrated below:
3. Enter SP Mode Adjustment page 4 Setting for P-con OFF Mode.
NOTE:
The original setting of BK under the VB column, then set it to -400 volts as illustrated below:
Continued…
CAUTION HIGH VOLTAGE
!
!!
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Use caution when working in this area
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reset
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Adjust to
- 400 volts