Konica Minolta Bizhub 282 Service Manual

20. Image quality problem Field Service Ver. 1.0 Dec. 2008
282
bizhub 362/282/222
TROUBLESHOOTING
20.3.12 Printer System: Black spots
A. Typical Faulty Images
B. Troubleshooting Procedure
AA
AA
4036fs4029c0
Step Section Check Item Result Action
1 Paper Path Toner is on the paper path. YES Clean.
2 Imaging Unit Photo Conductor is dirty. YES Change Photo Conductor
Unit.
3 Fusing Unit Fusing Rollers are dirty or scratched. YES Change Fusing Unit.
4 Imaging Unit Comb Electrode contact terminal is dirty
or deformed.
YES Clean.
Change Photo Conductor
Unit.
5 Grid voltage contact terminal is dirty or
deformed.
YES Clean.
Change Photo Conductor
Unit.
6 Charge Neutralizing Sheet contact ter-
minal is dirty or deformed.
YES Clean.
Change Photo Conductor
Unit.
7 Erase Lamp Erase Lamp is dirty. YES Clean.
8 Is there continuity across the Erase
Lamp?
NO Change Erase Lamp.
9 - The problem has been eliminated after
performing step 8.
NO Change Photo Conductor
Unit.
Change Developing Unit.
Change High Voltage
Unit.
Change Mechanical Con-
trol Board.

Konica Minolta Bizhub 282 Specifications

General

Functions	Print, Copy, Scan, Fax
Print Resolution	600 x 600 dpi
Copy Resolution	600 x 600 dpi
Scan Resolution	600 x 600 dpi
Fax Transmission Speed	33.6 Kbps
Maximum Paper Size	A4
Duplex Printing	Yes
Printing Technology	Laser
Original Size	A4
Print Speed	28 ppm
Copy Speed	28 cpm
Network Connectivity	Ethernet
USB Connectivity	Yes
Zoom Range	25% - 400%
Scan Speed (B&W)	28 ipm