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Chapter 1 Troubleshooting
FIP- 1.P9 Spots
Before commencing troubleshooting, check the paper transfer course. Make sure there is no foreign
articles on the transfer course, such as staples, paper clips, scraps of paper and so on.
Print defect
There are toner spots all over the paper disorderedly.
ESS and possible causes
- EP CARTRIDGE
- HVPS/MCU (PL12.1.19)
- BTR ASSY (PL8.1.21)
- 150 FEEDER ASSY (PL5.1.1)
- ROS ASSY (PL8.1.1)
- GUIDE ASSY CRU R (PL8.1.25)
- PWBA ESS (PL12.1.13)
- 550 FEEDER ASSY (PL7.1.10)
Step Check
Yes
No
1
Checking EP CARTRIDGE
Install a new EP CARTRIDGE.
Carry out a test printing.
Have the spots gone?
End of work
Go to step 2.
2
Checking BTR ASSY
Remove BTR ASSY. (RRP8.10)
Check if any stains and/or wear on BTR ASSY.
Are there any stains and/or wear on BTR?
Go to step 3.
Replace BTR
ASSY. (RRP8.10)
3
Checking ROS ASSY
Are the connectors on ROS ASSY surely connected?
Go to step 4.
Reconnect the con-
nectors.
4
Checking the image development process
Operate Test Print, and turn off the power of the printer
while printing.
Remove the EP CARTRIDGE with care, and check the
toner image formed on the drum, right before the tran-
scribe part (BTR).
Is the image on the drum completely formed?
Is the area clear and black, and easily read?
Go to step 5.
Go to FIP1.41
HVPS/MCU.
5
Checking Heat Roll and Pressure Roll
Remove FUSER ASSY. (RRP8.8)
Warning; Start the operation after the FUSER ASSY
have cooled down.
Turn the Gear HR with a finger, and check the Heat Roll
and Pressure Roll.
Are the Heat Roll and Pressure Roll damaged or
stained?
Go to step [ESS
and possible
causes].
Replace FUSER
ASSY. (RRP8.8)