5185 colour fade
ive attached pictures of what this machine is doing...the first is a picture of the crappy colour chart, the second picture is what the copy looks like.Colours are extremely faded... Black and white is somewhat faded but prints are still legible.ITB?The Transfer Belt Unit is 157% passed its life span...hhmm actually no i wont post pictures... attempting to add an attachment just gives me an "error on page" message.
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Re: 5185 colour fade
Bottom line is ITB Maintenance/ this ITB sheet and or unit need parts replacement-
U need to also check the image on ITB Sheet before it reaches external secondary transfer roller
Ensure that the secondary transfer roller frame support springs are seated in their sockets correctly
Check if the contact brushes for the Secondary Transfer Roller are worn and bent out of position.
Brushes are mounted to the internal rear frame of the machine as illustrated below. Part Number for the Brushes: (FB6-3138-000 / FB6-3156-000 and FH2-9249-000).
Picture.jpg
Quality Checks> guess u need a Manual
ITB Arm Pressure Lift (front & rear positions)
Did u check if PG test prints are washed out (PG10/PG5 Single Color set at 255)
Auto-Gradation procedures =run daily
DRUM life
Glass copies ?
Network Prints ?
DF Scans ?**Knowledge is time consuming, exhausting and costly for a trained Tech.**
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Re: 5185 colour fade
all of the above.i haven't really worked too much on the 5180 series and i was really just fishing for some advice in case there was something i hadn't thought of.i never thought of checking the brushes... thanks.the ITB is in definite need of some TLC.I'm pretty much replacing everything that can be replaced.thanks for the advice!Comment
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Re: 5185 colour fade
Yeah im surprised the ITB didnt lose registration before this happened. Then you know you need to rebuild the ITB. Id rebuild ITB and replace sec transfer and run adjustments. Should work! For sure check lift arms. those white and black arms in Teckat's picture.Comment
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Re: 5185 colour fade
BUMP*
Same machine...
I replaced the Secondary Transfer Unit and instantly experienced colour fade... ran adjustments and still more of the same.
removed and checked contacts, how the unit is seated in the machine, everything appears to be installed properly, but still there is colour fade.
any thoughts?Comment
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Re: 5185 colour fade
You need to observe when and where this fade is occurring---
remove right side cover to observe the PG 10 on ITB during copy process>
is the image solid on ITB before separation ???? yes/no
or do u see faded PG10 after Primary T on ITB
Have u removed the SALT Sensor to inspect/clean or replace
Have u inspected the ITB Secondary Transfer Internal Roller
Make sure your ITB bed cams are in correct position>equal on both sides/to observe> remove fuser & duplex tray> cam up ITB> LOOK IN to view> these can cams can crack
ATVC Control (transfer bias level correction)
-The ATVC control mechanism is used to determine the optimum level of transfer voltage for transfer of images from the photosensitive drum to the ITB, and from the ITB to paper.
The level of transfer voltage is corrected in relation to changes in temperature/humidity, deterioration of rollers, and types of paper.
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1. A reference voltage is applied to the transfer roller, and the level of current that occurs in response is checked by the high-voltage PCB and communicated to the CPU on the DC controller PCB as feedback.
2. The machine executes transfer using a transfer voltage which is the result of correction by the CPU.
Primary transfer
Applies a reference voltage to the primary charging roller.
Uses the high-voltage PCB (HV-2) to check the level of current, and the result is fed back to the
CPU for determination of the optimum level.
Secondary transfer
Applies a reference voltage to the secondary transfer external roller.
Uses the high-voltage PCB (HV-3) to check the level of current, and the result is fed back to the
CPU for determination of the optimum level.**Knowledge is time consuming, exhausting and costly for a trained Tech.**Comment
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Re: 5185 colour fade
When was that ITB belt replaced. Try replacing those 4 primary transfer rollers within the ITB. Also those drums look shot.Comment
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Re: 5185 colour fade
The entire ITB was replaced only just very recently.
all the transfer rollers were replaced, including the secondary transfer roller... the only thing that i have changed is the secondary transfer unit and it was printing fine before i switched it out.
the only reason i switched it out was because the spring hooks on the underside of the secondary transfer unit were broken.Comment
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Re: 5185 colour fade
Okay.Comment
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Re: 5185 colour fade
one thing I learned about these models/ do not rely on % indicators used for DRUMS
look at the meter reading between drum replacements & look to see what the customer is printing
it's the % amount of toner on paper coverage
remember these are tested at 5/6% text coverage for those Drum % avg monthly numbers in guide
**Knowledge is time consuming, exhausting and costly for a trained Tech.**Comment
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Re: 5185 colour fade
Very good advice.one thing I learned about these models/ do not rely on % indicators used for DRUMS
look at the meter reading between drum replacements & look to see what the customer is printing
it's the % amount of toner on paper coverage
remember these are tested at 5/6% text coverage for those Drum % avg monthly numbers in guideComment
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Re: 5185 colour fade
U can see from TP10 that the wear marks are different for each color. That pretty much is a good indication the drums are kaput.
Drums can last op to 100000 pages, but can also be shot at 10-20000 when running full coverage heavy paper.Comment
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**Knowledge is time consuming, exhausting and costly for a trained Tech.**Comment
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Re: 5185 colour fade
I'll have another for ya.
That static elliminator looks pretty dirty. Waste toner is leaking from the waste toner feed screw and soils the area around the itb cleaning blade. Take out the cleaning blade and y drum and have a look. Remove the waste toner feedscrew and vacuum that mess, before is getting rock hard. If it keeps soiling replace the feed screw.Comment
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