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Re: Ghosting occurs at 38 mm.
You could do a what is called Half Print Test:
1). Use the MP Tray (Flip Down) to hold a couple piece of paper. 2). Run a Test print from the printer or the computer. 3). As the Trailing edge of the paper starts to disappear into the printer, open the cover as to replace the Toner to stop the printing. 4). Remove the toner cartridge carefully. 5). Look inside the printer and check the printout. Is the line on the printout? If so, toner. If not, something else.
Now, here is the fun part. If your Toner Cartridge is an HP OEM toner and it has more than 35% life left in it, it is supposely still under warranty (HP Toner Cartridge has what is called Limited Life Time warranty, whatever it means nowaday). Well here is where it gets weird. HP will not talk to you unless you pay $39 first to have a case open eventhough you are calling about something that is suppoesely still under warranty. If you are 100% certain and ready to argue with someone from India, don't call. What you need to do is paid the $39 with credit card. After the case is opened. You will talk to a Tech. You WILL HAVE TO get teh Tech to agree it is a Toner problem. At that point, the Tech agree to have a new Toner Next Day Aired to you with a return shipping label as a warranty replacement. YOU WILL HAVE ASK THE TECH TO CREDIT YOUR CREDIT CARD BACK for the $39. The last time I called in for a bad Toner replacement, the tech agreed it was indeed a toner problem and agreed to send a new replacement. When I asked to have the $39 back. He was making some comment like "So you want the $39 back too". I was quite offended and said "Why shouldn't I get MY MONEY back!?". I guess it is just another way to discourage people filing a claim.
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It sounds like you are getting ghosting and either the Primary charge roller or the OPC (drum) are deteriorating. If the cartridge was an original, it is probably due to be replaced. If the cartridge was a refill, you should contact the company you got it from and have it checked.
Hello, the black lines ( narrow ones ) can occure because of worn out charge roller and drum cleaning blade.
First of all You need to replace drum, drum cleaning blade and clean the charge primary roller or replace it.Also if the times was came for drum section, repace also the developer and do the preventive maintenace on copier.
The presence of a high-voltage error is communicated by the composite power supply PCB. (The output for primary charging, developing, or transfer has deviated from a specific level of voltage.)
Main cause: The contact has poor connection. The wiring is faulty. The composite power supply PCB is faulty. The DC controller PCB is faulty.
Action 1. Contact Is any of the contacts of the primary charging roller, developing assembly, or transfer charging roller soiled? Or, is there poor contact? YES: Clean the contact, and set it once again. 2. Wiring Is the wiring between the contacts for the following normal: DC controller PCB (J301), composite power supply PCB (J136), primary charging roller, developing assembly, transfer charging roller? a. DC controller PCB (J301) <-> composite power supply PCB (J136) b. composite power supply PCB (J130-7) <-> primary charging roller contact c. composite power supply PCB (J130-1) <-> developing assembly contact d. composite power supply PCB (FT133) <-> transfer roller contact NO: Correct the connection. 3. Composite power supply PCB, DC controller PCB Try replacing the composite power supply PCB. Is the problem corrected? YES: Yes. NO: Replace the DC controller PCB.
I would suggest either a fuser problem, If all Colors affected, or the Black Toner Cartridge.
The Below chart may help isolate which component is malfunctioning.
Repetitive image defectsMeasurementComponent
24.7 mm (0.97 inch)
Developer sleeve (Print Cartridge)
26.7 mm (1.05 inches)
Charge roller (Print Cartridge)
32.9 mm (1.3 inches)
37.7 mm (1.48 inches)
Transfer roller (ETB)
54.5 mm (2.15 inches)
ETB rollers (ETB)
56.6 mm (2.22 inches)
Fuser sleeve (Fusing Assembly)
62.8 mm (2.47 inches)
Pressure roller (Fusing Assembly)
75.4 mm (2.97 inches)
OPC (Print Cartridge)
Drum Memory Make about 5 to 10 prints; then, leave the machine in the office environment (normal temperature/humidity conditions) * This symptom is noticeable in a low temperature/ humidity environment, and is absent under normal environmental conditions. * This symptom occurs in keeping with the primary charging roller rotation (38 mm).
Toner/developing cylinder 37.7 mm (1.48 inches)
Toner/primary charging roller 37.7 mm (1.48 inches)
Heating element 56.5 mm (2.22 inches)
Transfer roller 45.2 mm (1.78 inches)
Pressure roller 62.8 mm (2.47 inches)
Toner/drum 75.4 mm (2.97 inches)
Feed roller 55.1 mm (2.17 inches)
From the service manual: "Repetitive print defects usually are associated with a specific roller within the printer or the Toner Cartridge. Use Figure 7-1 to isolate the cause of repetitive print defects. Align the first occurrence of the defect with the top of the “ruler” (at the top or bottom of the misprinted page), and measure to the next occurrence of the defect to determine the roller in question. When the defect pattern matches the pattern of the ruler, replace the indicated roller."
I can't post the ruler from the service manual here, but it gives some measurements.
Start with the initial point where the occurence started then measure down to the next occurence.
If it occurs at 38 mm, then it is your primary charging roller. At 42 mm, feed roller. 44mm, registration roller 46mm, transfer charging roller 50mm, developing cylinder 63 mm, pressure roller 75mm fusing film unit 94 mm, photosensitive drum
Developer streak is characterized by a line of dark or missing toner
that stretches from the leading edge to the trailing edge. Replace the
toner cartridge corresponding to the color of the developer streak (for
example, if the streak is magenta, replace the magenta toner
Repetitive defects troubleshooting
Repetitive defects are defects that occur in the same vertical position
on the page, but not necessarily on every page. Most repetitive
defects are caused by problems with one of the following, and are
indicated by the positioning of the defect on the page:
developer roller (at 38 mm)
charging roller (at 44 mm)—see additional information under
“Charge roller set” on page 454.
cleaning roller (at 56 mm)
developer DSD wheels (at 65 mm)
transfer roller (at 66 mm)
transfer drum (occurs once per 11-by-17 inch or A3-sized page,
or every other letter- or A4-sized page)
fuser (at 150.5 mm)
imaging drum (at 195 mm)
transfer belt (at 222 mm)