Developer Mixing
The toner is supplied from the hopper [A]. Two mixing coils [B and C] move the developer forward and
rearward to mix the developer.
This occurs at these times:
• Immediately after a new PCU is installed.
• During the process control self check
• During toner supply
• During development.
• Every 36 hours (can be changed with SP 3554 003)
• If absolute humidity changes more than ± 6 g/m
3
(e.g. 23°C/ 50%
Þ
27°C/ 70%). The humidity
threshold can be changed with SP 3554 004.
Development Bias
The high voltage supply board #2 supplies development bias to the development roller through the
receptacle at the rear of each development unit.
There are ac and dc bias voltages. The ac bias improves toner transfer to the drum.
Development
387
6
Summary of Contents for G-P3
Page 1: ...Model G P3 Machine Code G190 SERVICE MANUAL January 2008 Subject to change...
Page 11: ...10...
Page 77: ...11 Harness guide C x 2 12 Drive unit D x 6 x 16 3 Replacement and Adjustment 76 3...
Page 91: ...3 Replacement and Adjustment 90 3...
Page 137: ...LEDs No LEDs are used for this model except for the Network Interface 4 Troubleshooting 136 4...
Page 337: ...5 Service Tables 336 5...
Page 411: ...MEMO 410...
Page 412: ...MEMO 411...
Page 413: ...MEMO 412...