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Type: Posts; User: cokwax

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  1. Replies
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    Re: KM5050 Condensed copy

    Problem Identified. Found a broken left door locking tab. Transfer roller not pressing well against the drum to drive paper through.
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    261

    Re: KM5050 Condensed copy

    Scans Ok. Its a print issue. All A3 prints affected. A4 only trailing 1.5inch slightly affected.
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    261

    KM5050 Condensed copy

    Not sure how to describe this problem. Please see attached images. Affects mostly A3 prints and copies.40572405734057440575
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    356

    Re: GR 3750 Check Paper feed area

    Mine seems different issue. Safety bar switch is operating properly,Its switches click when pushed up and click again when released. Even its removal does not help.
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    356

    GR 3750 Check Paper feed area

    Faulty Power supply caused a fault on my system PCB. Replaced both. Now getting an error at startup "controllare area presa carta" which I guess means check paper feed are. No paper is jammed, Papers...
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    351

    KM5050 screen problem

    I have to calibrate the touch screen (U201) every time I wake the machine from sleep. Sometimes even immediately after calibration, I have to do it again.
    Buttons respond several centimeters away...
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    612

    Riso GR3750 Empty Disposal Box error

    This error started being persistent on my GR3750 even after actually emptying the disposal box and setting it in place. I have tested continuity of the sensor wiring and all is well. I swapped the...
  8. IR3300 random Toner Line on prints and copies

    See attached image. This isn't a line as such, since it is not running down the page. I can call them random Toner marks.
    It may appear anywhere on the page and the length varries. Some pages may...
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    1,220

    [Misc] Re: KM-5050 faint copies.

    Ok Thanks all.
    A new Dev unit solved my problem.
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    [Misc] Re: KM-5050 faint copies.

    Happens to both copies and prints. Internal prints using U089 equally faint. Changed Charger unit in vain. Transfer roller springs Ok.
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    [Misc] KM-5050 faint copies.

    I bought KM-5050 used. Produces faint copies from day 1 I received it.
    Even at +3 density, the copies are still not satisfactory. Tried New Toner -same result.
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    1,070

    Re: BIZHUB C451 Frequent Printer board failure

    Print head was the problem.
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    575

    Re: C451 stabilizing image

    Wish u started with printer control board!
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    BIZHUB C451 Frequent Printer board failure

    I have replaced 3 printer boards so far and a fourth one is now required.
    The machine fails to complete image stabilization on start up and displays p-6, p-7, p-8, p-9.
    When the printer board is...
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    742

    Re: IR3300 zig zag copy

    Replaced Dev cylinder and primary Charging roller, problem gone.
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    742

    IR3300 zig zag copy

    I know someone else posted this sometime, but on my 3300 the problem is random. sometimes machine normal, other times zigzag copy. wondering what the problem is. Laser unit was never opened. I...
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    1,504

    [Error Code] Re: Risograph gr3750 disposal box errors!

    I have this same problem on my GR3750. When I disconnected all master sensors and tried again, the machine worked until the disposal box filled again and message persisted again. Could it be a sensor...
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    575

    C451 stabilizing image

    Machine indicates "Stabilizing image" and never comes to the Ready state. No error code indicated. Any ideas?
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    392

    Re: White bands on canon gp335

    That is not TestPrint. It is a glass copy with the copyboard open, Cross-feed.
    Test prints present the same result.
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    [Error Code] Re: Canon Imagerunner 2200

    I wouldn't rush to a screw driver before trying with fingers first. i.e Attempt to clear the code first in service mode, then if it fails, take out the fixing unit.
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    White bands on canon gp335

    See the attached Image of a 'would be' black page. I have cleaned and even changed the primary and transfer charging rollers, Replaced drum, Cleaned the dust-proof glass, Laser Scanner, done CCD...
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    [Electrical] Re: GR 3750 T11 CALL SERVICE

    To avoid getting done, I found a similar connector on my old scrap laserjet printer. I cut it off with sufficient wire to join to the GR wires. Thanks for your connector repair tutorial. I will now...
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    Re: GR3750 elevator reversed

    Thanks for your reply.
    Actually, I realised the cause: The technician I had called to help me service the machine had put a new sensor which was not similar to the original. The sensors we kept on...
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    GR3750 elevator reversed

    The sensing of the lower limit sensor has changed. The elevator paper feed tray now lowers when I close the light path of the the lower limit sensor. Once opened, the tray stops moving.
    I have tried...
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    [Electrical] GR 3750 T11 CALL SERVICE

    This is a sensor problem on my GR3750. The pressure control motor is running fine. The PRP led does not turn on and off when the light path is closed and opened. I tested with another working...
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