2022 light copies

[Rick]

Customer has a light copy approx 4 levels too light . Can I darken this through a service mode . If so which one ? I have a manual and it is a little confusing . I see something in sp 4904-11 gama selection is this the right
sp mode to adjust ?

[bonnie750]

never had to adjust this for pcq. print an smc and check if they have been altered, if they haven't .....leave them alone!!!It sounds like toner dusting on the laser glass. also how many copies on the pcu? could also be worn bushings/contacts on the transfer roller.

[cobiray]

First thing is check and see if the originals are light, in pencil, etc. Then check the pages printed from memory and clean the optics. If the memory prints are light check the transfer roller or IU.

[iMind]

[E Winter]

Usually there's indeed no need to adjust the image density via SP. I like this black triangle on the counter page - it's a good and quick indicator to get an impression of the printer black level.

PCU lifetime is 60k and as already mentioned you may have to check the transfer roller and laser protection glass. Non OEM toner may also affect the image quality.

[claudioterrible]

light copies

first of all ,clen all the optics,the polygon mirror,optic filter,after these...check the sp,must be in factory default,IF the drum ,developer are ok ,and the tonner is original,tthe machine will works ok

[Do It All Tech]

Most of my experiences has been that the developer is wore out and dusting the glass. clean it and replace it.

[imaginemoko]

check first your consumables life..... after verifying them... if still not due to replace... then check your optics..... well.. see if you print a counter and its light perhaps your problem is not on optics... otherwise... it was... last reort on your sp mode if it happen you adjust those values....

[bonnie750]

Well Rick don't keep us in the dark.......is it fixed or not?

[lvsb]

Set SP2201 and SP 5601 to default

2201* Development Bias Adjustment
2201 1 Printing
Adjusts the development bias during printing.

This can be adjusted as a temporary measure if faint copies appear due to an
aging drum.

[.1500 ~ 2000 /

.650 / 1 V/step]
2201 2 ID Sensor Pattern
Adjusts the development bias for making the ID sensor pattern.
The actual development voltage for the ID sensor pattern is this value plus the
value of SP22011.

This should not be used in the field, because it affects ID sensor pattern density,
which affects toner supply.

[0 = N (200V) / 1 = H (240V) / 2 = L (160V) / 3 = HH (280V) / 4 = LL (120V)]

5106* ADS Level Selection
Selects the image density level that is used in ADS mode.

[1 ~ 7 / 4 / 1 notch/step]

[Do It All Tech]

Well did you replace the pcu yet?

[Fearless V K]

Every time I have seen light copies on that machine it is either 1. toner has dumped from the hopper onto the laser slit glass, or 2. the gears in the PCU which drive the augers and mag roller inside of it are stripped out.