Sharp AR-651 Service Handbook page 260

Defective area
Density reproduction
Printer section
Parameter adjustment
value
Scanner
Developer material/Toner
/Photoconductive drum
AR-651/810 TROUBLESHOOTING
Step Check Items
1 Check the reproduction of the
image density.
2 Check the printed image.
3 Check the image processing
parameter.
4 Are the original glass
(especially shading position),
mirrors and lens dirty?
5 Using the specified developer material,
toner and photoconductive drum?
6 Have the developer material and the
photoconductive drum reached their
PM life?
7 Is the storage environment of the
toner cartridge 35°C or less without
dew?
Prescription
Adjust the density.
Make a test print using 04-113 and
check it.
Check the range correction setting
and the adjustment value of the
background peak for range
correction. (
If they need to be adjusted, check
the print image in the above circle
mark to adjust the adjustment value
of the background peak for range
correction.
Clean them.
Use the specified developer material,
toner and photoconductive drum.
Replace the developer material and
photoconductive drum.
Use the toner cartridge stored in the
environment within specification.
5 - 110
Go to step 4
if there is any
problem with
the image.
ch. 3.4.4, ch. 3.4.5)
Remarks