Ricoh BR-C1a Basic Service Training page 267

 There are two procedures.
 Development unit replacement: Drain the old
 Developer replacement, without replacing the
 The next few slides summarize the procedures.
See the service manual for full details.
 Replacement and Adjustment > Around the Drum
Slide 267
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Replacement and Adjustment
Summary
developer from the old development unit. Then
change the development unit. Then add new
developer to the new unit (first the small bag
[145g], then the main bag).
development unit: Drain the old developer. Then
add new developer
> Development Unit Replacement
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BR-C1 Training