ir7095 print blur

[CanonSco]

Re: ir7095 print blur

not a BLUR Issue------------------
[ATTACH=CONFIG]13570[/ATTACH]

TONER or Transfer issue

check the coating of Toner on the Developer Mag roller --
If the Mag Roller coating is uneven, inspect the two gears on the rear of the Developer Assembly.
[ATTACH=CONFIG]13571[/ATTACH]


What happens If you turn potential control off ?????

Perform a panic stop and checking the image on the drum see if it is light--------------
If Light--------------check & clean The Laser Dust Proof Glass
[ATTACH=CONFIG]13572[/ATTACH]

Also-Check visually to make sure that blanking lamps are coming on.
You should see a red glow next to primary corona, and don't forget to cheat the laser shutter when looking or else it will generate an E110 .
The DC controller sends 24v dc to turn on lamps. You should also not read any continuity when ohming lamps at connector.
If you do read continuity most likely the short also took out DC controller and you will have to replace them both at the same time.

Agree with the man here. Turn off PotControl and post image back.
Also , what are your DPOT VL1M and VL1M-P readings? ( should be around 60v-90v if I remember)

[eurokris]

Re: ir7095 print blur

the discharge lamp is working.whn off potential .no image on paper.

wht i need should check?

[teckat]

Re: ir7095 print blur

the discharge lamp is working.whn off potential .no image on paper.

wht i need should check?

CHECK DRUM SURFACE POTENTIALS
The measured and target values (VL1M and VL1T) (VDM and VDT) in DPOT, SERVICE MODE>COPIER>DPOT, should be relatively close in value. When the measured value of VDM (VOLTAGE DRUM/DARK) is close to the value of VL1M (VOLTAGE LIGHT)\
SCANNER LASER AND BLANK LAMPS should be investigated because the primary voltage is not being dissipated by light.
Check visually to make sure that blanking lamps are coming on. Replace LED ARRAY Unit if needed. = FH7-3395-020
Check the the laser shutter. When the shutter is not open fully, the VL1 value will rise. Bent actuator may be the cause.
Replace the Laser Unit. The part number for the Laser Scanner Assembly is FM2-5449-010.

CHECK DEVELOPER
If copies and prints are light, check the coating of Toner on the Developer.



Set a copy run of 25~50 copies. Once started, go into service mode Copier>Display>DPOT and see what VLT is reading (normally around 65~70 volts). Next check VLM and what that reading is (this should be close to VLT). In cases where VLM is much higher than VLT ( such as VLM= 200) the Laser Scanner power is to weak, and could not bring the voltage down to correct target. If Adjusting Laser Power in Service Mode does not correct problem -replace the Laser Scanner Assembly (FM2-5449-010) -

also check
DC controller.
HVT, Primary Corona ????

[Herrmann]

Re: ir7095 print blur

Do you get an E110 in addition sometimes?
if so, replace the laser Diode assy, not the whole Laser Unit.
Part Number: FM2-8146-000

Btw.: if you perform a panic stop, how does the toner image at the drum surface looks like? is it palish too? if so, go the laser way, if not, go for transfer related things. Try to raise the transfer corona wire 1mm and lower the sep corona wires 1mm, does the quality become better?

[eurokris]

Re: ir7095 print blur

hi good day to all

thanks teckat.i already sovle the problem.change another dc con the print is ok.

pls anyone can explain to me why the cause dc con give poor tranfer print?

thanks again for ur help

[spectraindo]

Re: ir7095 print blur

You used genuine Toner, what type is it ? Must be NPG-29.

[eurokris]

Re: ir7095 print blur

yes i am using ori toner.

[teckat]

Re: ir7095 print blur

hi good day to all

thanks teckat.i already sovle the problem.change another dc con the print is ok.

pls anyone can explain to me why the cause dc con give poor tranfer print?

thanks again for ur help

U need to learn the copy process in printers-
take a look at this picture to see what FUNCTIONS are attached to DCPCB-
this is a wiring diagram <_-_>-& not the direction of signals.
DC.JPG

[creppy]

Re: ir7095 print blur

hi good day to all

thanks teckat.i already sovle the problem.change another dc con the print is ok.

pls anyone can explain to me why the cause dc con give poor tranfer print?

thanks again for ur help

how to trick or repair dc controller cause poor transfer, without replace them with new one unit. anyone know
thank's

[spectraindo]

Re: ir7095 print blur

First you must have a shematic diagram of the DC Con ,locate which IC is driving the HVT unit.
Then you must have equipment for handling SMD's because all IC's on the DC Con are SMD's.
You must have the replacement IC, it's not easy to get.
Replace the IC's one by one until the DC Con is OK

[Herrmann]

Re: ir7095 print blur

There are some soldered fuses (2Amp/125V, if i remember correctly), maybe it is a good idea to check them first. Had this several times, they are easy to replace, just cut them out and solder new fuse to the remaining wires.