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Epson C 2900 Manual

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    							1 - 128 Chapter 1   Troubleshooting
Epson AcuLaser C2900NRevision B
Confidential When horizontal lines and/or spot occur periodically, it is possibly caused by the 
trouble of a particular roll. In this case, compare the trouble intervals on the test 
print with the Pitch Chart. The interval does not necessarily match circumference 
of the roll. The trouble may be solved easily by the check.
No Roll Parts Period (mm) Replaceable parts
1 Heat Roll 67 FUSER UNIT
2 Pressure Belt 63 FUSER UNIT
3 Drum 76 DRUM CARTRIDGE
4 Belt 410 TRANSFER ASSY
5 Regi Roll (rubber) 37 PRINTER
MiS01003SA Exit roll [FUSER UNIT]
Dup Gate [FUSER UNIT]
Heat roll [FUSER UNIT]
Belt [Transfer Belt] Pressure belt [FUSER UNIT]
Regi roll (rubber)
[Regi Assembly]Dup roll (rubber)
[Duplex]
Regi roll (metal)
[Regi Assembly]
Turn roll (metal)
[Feeder Assy  Opt.]
Turn roll (rubber)
[Feeder Assy  Opt.]
Retard roller
[Tray 1]
Retard roller
[Tray 2] Feed roll
[Feeder Assy  Opt.] Feed roll
[Feeder Assy]
Dup roll (rubber)
[Duplex]
Drum
[DRUM CARTRIDGE]
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    							1 - 129 Chapter 1   Troubleshooting
Epson AcuLaser C2900NRevision B
Confidential -Pitch Chart
The chart is printed [Contamination Check] in the [Test Print] of the [Diagnosis].
Page 1Page 2
Page 3Page 4
Page 5
Wsb02028KA
13
Wsb02027KA
13
Wsb02029KA
13
Wsb02030KA
13
Wsb02025KA
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    							1 - 130 Chapter 1   Troubleshooting
Epson AcuLaser C2900NRevision B
Confidential
4.2   Print Image Quality Specifications
Image Quality Guarantee Conditions
The image quality is specified and guaranteed under the following conditions.
1) Environmental Condition
Temperature: 5°C - 32°C
Humidity:15% RH - 85% RH (85% RH at 28°C)
Note that defect may occur due to condensation after around 30 minutes if the printer is turned on 
in a critical environment.
2) Guaranteed Paper
The print image quality specified in this chapter should be guaranteed when the standard paper is 
fed from the cassette tray. The print image quality is evaluated on the maximum size of each stan-
dard paper.
Color print quality: X-Pression 24 lb paper
Black and White quality: 4200 paper
3) Paper condition
The paper used is flesh paper immediately after unpacked, which has been left in the operating 
environment for 12 hours before unpacking.
4) Printer condition
The print image quality specified in this chapter is guaranteed with the printer in normal condition.
5) Criterion for judgment
The print image quality is guaranteed with Spec. In rate = 90% (λ =90%).
6) For Color chart, Parallelism, Perpendicularity, Skew, Linearity, Magnification Error, Registration and 
Printed Guaranteed Area, refer to each chart below.
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    							1 - 131 Chapter 1   Troubleshooting
Epson AcuLaser C2900NRevision B
Confidential Chart
Parallelism
Perpendicularity
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    							1 - 132 Chapter 1   Troubleshooting
Epson AcuLaser C2900NRevision B
Confidential Skew
Linearity
Magnification Error
Registration
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    							1 - 133 Chapter 1   Troubleshooting
Epson AcuLaser C2900NRevision B
Confidential Guaranteed Printing Area
Rio01001KA
4.1mm
4.1mm4.1mm
4.1mm
355.6mm
(14inch)
215.9mm
(8.5inch)351.5mm
211.8mm
Guaranteed printing area
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    							1 - 134 Chapter 1   Troubleshooting
Epson AcuLaser C2900NRevision B
Confidential
4.3   Image Quality FIP
FIP-1.P1  The output is too light
          ESS and possible causative parts
- TRANSFER ASSY (PL6.1.7)
- DRUM CARTRIDGE (PL4.1.21)
- DISPENSER ASSY (PL5.1.1)
- ROS ASSY (PL4.1.1)
- PWBA HVPS (PL4.1.19)
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 CheckRemedy
Ye s N o
1Checking the printing.
Checked by [Test Print] - [Gradation] in diagnosis.
Is the image printed correctly?Printing data is 
incorrect, then 
check the printing 
data which the 
problem 
generated.Go to step 2.
2Changing the printer driver setting.
1.Reset Image Settings (Brightness/Contrast) to defaults.
- Click [Restore Defaults] in [Image Settings] on the 
[Graphics] tab.
2.Disable Toner Saving Mode.
- Deselect the [Toner Saving Mode] check box on the 
[Advanced] tab.
Is the image printed correctly?End of work. Go to step 3.
3Checking the paper.
Is the installed paper with a new and dry one? or does the 
paper satisfy the specification?Go to step 4.Replace the paper 
with a new and dry 
one. or Change 
the paper to the 
one that satisfies 
the specification.
Mnt01100KAMnt01101KA
Faint
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    							1 - 135 Chapter 1   Troubleshooting
Epson AcuLaser C2900NRevision B
Confidential 4Checking the TONER CARTRIDGE (Y, M, C or K) for 
installation.
Shake and reseat the suspected TONER CARTRIDGE (Y, 
M, C, or K).
Is the image printed correctly?End of work. Go to step 5
5Checking the TONER CARTRIDGE (Y,M,C or K).
Is the toner cartridges installed to the printer the toner for 
C2900?Go to step 7 Go to step 6
6Set the Non-GenuineToner option to [Off].
Is the image printed correctly?End of work. Go to step 7
7Checking the DRUM CARTRIDGE sealing ribbon.
After turning the printer off, open the front cover and remove 
the DRUM CARTRIDGE from the printer. Remove any of 
the 8 pieces of sealing ribbon that may be left on the DRUM 
CARTRIDGE. Then, install the DRUM CARTRIDGE into the 
printer. If the ribbon is found, it takes a long time until the 
density is recovered. To use the printer immediately, change 
the DRUM CARTRIDGE to another one.
Is the image printed correctly?End of work. Go to step 8
8Checking the TRANSFER ASSY for connection.
Open the COVER ASSY FRONT MG.
Are four HV terminals on the right side of the TRANSFER 
ASSY, and four springs on the frame (PL4.1.11, 12, 13 and 
14) dirty and/or deformed?
Clean or replace 
the TRANSFER 
ASSY or 
SPRING(s), then 
go to step 9.Go to step 9. Step CheckRemedy
Ye s N o
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    							1 - 136 Chapter 1   Troubleshooting
Epson AcuLaser C2900NRevision B
Confidential 9Checking the DRUM CARTRIDGE for connection.
Remove the DRUM CARTRIDGE.
Are five HV terminals on the DRUM CARTRIDGE, and five 
springs on the frame (PL4.1.10 and PL4.1.15 to 18) dirty 
and/or deformed?
Clean and/or 
replace the DRUM 
CARTRIDGE or 
SPRING(s), then 
go to step 5.Go to step 10.
10Checking after resetting the DRUM CARTRIDGE.
Reseat the DRUM CARTRIDGE.
Is the image printed correctly?End of work. Go to step 10.
11Checking the laser beam windows of the ROS ASSY.
Are the laser beam windows on the ROS ASSY clean? 
Go to step 12.Clean the 
window(s) with 
soft cloth or cotton 
swab gently.
12Checking the laser beam path.
Are there any foreign substances between the ROS ASSY 
and DRUM CARTRIDGE?
Remove the 
foreign 
substances.Go to step 13. Step CheckRemedy
Ye s N o
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    							1 - 137 Chapter 1   Troubleshooting
Epson AcuLaser C2900NRevision B
Confidential 13Does the Toner Dispenser Motor function normally?
Checked by [Digital Output] - [Yellow Toner Motor,Magenta 
Toner Motor,Cyan Toner Motor,Black Toner Motor] in [IOT 
Diag] of diagnosis.Go to step 15.Replace the 
DISPENSER 
ASSY (refer to 
RRP5.1), then go 
to step 14.
14 Is the image printed correctly? End of work.Replace the 
printer.
15Checking after resetting the PWBA MCU.
Reseat the PWBA MCU.
Is the image printed correctly?End of work. Go to step 16.
16Checking after resetting the PWBA ESS SFP.
Reseat the PWBA ESS SFP.
Is the image printed correctly?End of work. Go to step 17.
17Checking after resetting the TRANSFER ASSY.
Reseat the TRANSFER ASSY.
Is the image printed correctly?End of work. Go to step 18.
18Checking after replacing the TRANSFER ASSY.
Replace the TRANSFER ASSY. (Refer to RRP6.3.)
Is the image printed correctly?End of work. Go to step 19.
19Checking after replacing the DRUM CARTRIDGE.
Replace the DRUM CARTRIDGE. (Refer to RRP4.6.)
Is the image printed correctly?End of work. Go to step 20.
20Checking after resetting the PWBA HVPS.
Reseat the PWBA HVPS. 
Is the image printed correctly?End of work. Go to step 21.
21Checking after replacing the DISPENSER ASSY.
Replace the DISPENSER ASSY. (Refer to RRP5.1.)
Is the image printed correctly?End of work. Go to step 22.
22Checking after replacing the ROS ASSY.
Replace the ROS ASSY. (Refer to RRP4.1.)
Is the image printed correctly?End of work.Replace the 
PWBA HVPS. 
(Refer to RRP4.5.) Step CheckRemedy
Ye s N o
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