Panasonic FP-1670 a.k.a. Lanier 6717

[Retired_EE]

Where is the machine located (environment wise), because your sample kind of looks like condensations on the optics somewhere as well.

Regards!
A.

Located in my home. Temperature and humidity are quite constant.

Agree that even the best parts of the copy are "imperfect", but I would be satisfied if it were all uniform.

Maybe scanning to make a .JPG for the post is partly to blame for the appearance?

[Harry]

hi guy

have an analog error a long time ago it is the first mirror out of position check it on the front side
good luck

[Retired_EE]

have an analog error a long time ago it is the first mirror out of position check it on the front side
good luck

If I understand you correctly, you are talking about this mirror. How could I tell if it is out of position? My thought is that a problem there would not cause the type of copy I am seeing.

Does this "sky shot" help anyone with a diagnosis? This really seems indicative of a drum problem, but the drum is brand new. (Again, the orientation of the copy is such that the long axis of the paper aligns with the rear side of the machine.)

[pepper38_cnd]

When you remove the dev unit and turn it by hand. Is the mag roller and brush even the whole length or is it weak (flat or depleted) in the area thats white on the sky shot?

[copytechman]

Upon further review it appears to look like poor charging (poor transfer would still produce an image of a sort although it would be faded badly.. is your charger seated properly in/on the drum unit? Anything contaminating it? Looks like poor charge (most likely) or poor xfer, (less likely), i'd go after the charging since you had the drum out.

Regards!
A.

[Harry]

first mirror

the first mirror maen the first little mirror under the exp lamp!
that all black copy looks like the papper blocked a moment before entrance in fuser check that also! much charge can do this
for qualty of copy try
f5 c25 at 0
f6 c11 f6 c17 f6 c19 at 0
make a copy in f2
ife its light try too ajust f 6 c40 ore c39 manual say copy standard density ajust. ive the copy is good as fare make f5 c25 at on again.
i forgot first clean the sensor photooptik near the drum right under the wastetoner auger. there is one screw and one connector and it come out than make that upper ajustment
good luk

[Harry]

attachment

after ajust copy density you have to shut down the copier and put it back on ajust f 6 c11 if copy is to light or dark.
thats all i know tomorow i take a look at the service manual if i find it anymore repaire this copiers a long time ago thats all i remember yet!
a nice day

[Retired_EE]

When you remove the dev unit and turn it by hand. Is the mag roller and brush even the whole length or is it weak (flat or depleted) in the area thats white on the sky shot?

Appears to me to be quite uniform across the roller, and around the roller's circumference as I turn it manually.

(Sky shot shown for reference as it would have traveled through the machine.)

[Retired_EE]

i forgot first clean the sensor photooptik near the drum right under the wastetoner auger. there is one screw and one connector and it come out than make that upper ajustment
good luk

I have cleaned this sensor recently (~10 copies ago). It is obviously dirty again! I think this is a symptom of a larger problem -- a very high rate of toner transfer to the waste bottle. What could cause this?

I appreciate everyone's help with this. I'm sure it is frustrating dealing with an amateur! I will work through all of your suggestions.

[copytechman]

I would still say to recheck your charging/xfer system... that symptom looks like telltale lack of charge and/or xfer to me.

Regards!
A.

[Harry]

wath is about the charge grid

check the grid to deformed in this area and corona wire and housing of transfer is dirty.make a copy jam under the drum this way you understand were it coms from

[Retired_EE]

the first mirror maen the first little mirror under the exp lamp!

Getting better! Cleaned the first and third mirrors, and this made a drastic difference. Obviously, when I said I had cleaned all the optics, I had lied. Previously, I did not even understand where these mirrors were located inside my machine.

I have everyone here to thank for this. The copy quality has improved from "useless" to "useful". There is still a light area on my sky shot, and this can be seen on my test page as a poor-quality area. I will continue to try to improve the output.

Now two questions:

Where can I get some sort of test sheet?

Where can I obtain OEM Panasonic parts for this machine? I have been buying from Precision Roller, but they do not sell "hinges" for the cover.

[Harry]

have a good time

ive now you clean the copier inside for another time include corona wires and housings it works fine again

saluti harry