Epson AcuLaser C2900N Service Manual page 160

Chapter 1 Troubleshooting
FIP-1.P7 Pitched color dots
13
Before commencing troubleshooting, check the paper transfer path. Make sure there is no foreign
materials on the transfer path, such as staples, paper clips, scraps of paper and so on.
Step
Checking the defective parts.
Print the [Pitch Configuration Chart] in [Chart Print] in
[Diagnosis] tab of [Tool Box].
1 When the partial lacks of periodicity are observed, check the
defective parts by comparing the printed partial lacks with
the Pitch Chart.
Are there any partial lack matching the chart?
Checking after cleaning Inside the Printer.
2
Is the image printed correctly?
Shake and reseat the suspected TONER CARTRIDGE (Y,
3 M, C, or K)
Is the image printed correctly?
Checking the belt surface of the TRANSFER ASSY.
4 Are there any damages on the belt surface of the
TRANSFER ASSY?
Checking the TRANSFER ASSY for connection.
Open the COVER ASSY FRONT MG.
Are four HV terminals on the TRANSFER ASSY, and four
springs on the frame (PL4.1.11, 12, 13 and 14) dirty and/or
deformed?
5
Epson AcuLaser C2900N
Check
1 - 147
ESS and possible causative parts
- TRANSFER ASSY (PL6.1.7)
- DRUM CARTRIDGE (PL4.1.21)
- FUSER UNIT (PL6.1.1)
Yes
Replace the
corresponding
parts.
End of work.
End of work.
Replace the
TRANSFER
ASSY. (Refer to
RRP6.3.)
Clean or replace
the TRANSFER
ASSY or
SPRING(s).
Revision B
Remedy
No
Go to step 2.
Go to step 3.
Go to step 4.
Go to step 5.
Go to step 6.
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