Ricoh FW830, Service Manual

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1. TROUBLESHOOTING FOR COPY IMAGE
1.1 ABNORMAL COPY IMAGE
1.1.1 Low Image Density (Entire Copy Image)
Is toner supplied to the development unit?
Yes No
Toner the cartridge set properly?
Yes No
Set the toner cartridge properly or replace the cartridge if broken.
Toner density in the development tank may be too low.
⇒
Change ID sensor bias position from 0 to 2.
Is there sufficient toner in the cartridge?
Yes No
Toner supply amount may be low due to toner near end.
⇒
Replace the toner cartridge.
Toner supply system may not catch up with large black area on copy image.
⇒
Make white copies.
1.1.2 Low image density (partial copy image)
Partial void image?
Yes No
Transfer corona may leak or the development roller may not rotate.
⇒
Replace transfer corona end blocks or check the development drive section.
Charge corona may leak.
⇒
Replace charge corona end blocks.
31 December 1992 TROUBLESHOOTING FOR COPY IMAGE
6-1