Epson ColorPage EPL-C8000 Service Manual page 442

EPSON EPL-C8000
FIP-3.1 Low image density
Phenomenon: Overall Image density is lower than normally.
Perform the preliminary inspection.
Parts to inspect:
Toner Cartridge, DRUM CARTRIDGE, HVPS, ROS ASSY, MCU PWB
Item Check Points
Toner Cartridge for its toner level
1
l
Does the Toner Cartridge have enough toner?
Laser beam path condition
l
Is there any foreign matter or smear along the
2
laser beam transmission path between the
ROS ASSEMBLY and the Drum?
Improper Charging/Development
During the image transfer, turn the printer off and
examine the toner image on the drum surface
3
(point before the transfer) visually.
l
Is the toner image on the drum developed
properly?
Improper 1st transfer
During the image transfer, turn the printer off and
examine the image on the TRANSFER BELT
4
ASSY visually.
l
Is the image on the drum properly transferred
to the TRANSFER BELT ASSY?
Improper 2nd transfer
During the image transfer, turn the printer off and
5
examine the image on the paper visually.
l
Is the image on the TRANSFER BELT ASSY
properly transferred to the paper?
DRUM CARTRIDGE malfunction
6
Replace the DRUM CARTRIDGE with a new one.
l
Has the problem been solved?
Chapter 5 TROUBLESHOOTING
Remedy (When abnormal)
Replace the Toner Cartridge.
Remove the foreign matter / smear
along the laser beam transmission path
between the ROS ASSEMBLY and the
DRUM.
Refer to "FIP-2.38 "HVPS is
Defective"".
Refer to "FIP-2.38 "HVPS is
Defective"".
Refer to "FIP-2.38 "HVPS is
Defective"".
Replace the DRUM CARTRIDGE.
Rev. B
SER576X
5-108