Question about Office Equipment & Supplies
How do I clear an error [service call] The chucking sensor is not found An unrecoverable error occurred, or part replacement must be performed by a service technician is required. The machine is not even 6 months old and they are located in Costa Rica. What can I do about this there must be a way to release the tool I think the sensor is just stuck. It was in the middle of a part run when it happened.
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Posted on Jan 02, 2017
SOURCE: 929 service toner sensor error
well i was having the same problem and what i did was open up the side of the printer. the same side that the toner sensor is on. the sensor consists of three metal parts. i took a screwdriver and pressed them on the outside. i pressed them in and up to ensure that the sensors are connecting. and i have not had that problem since.
Posted on Dec 11, 2008
SOURCE: Riso GR3750 T1 error Drum Jam
I had this problem too: just unlock the hook under the drum; disengage the drum then pull out the drum; then check the home position if not in position open the behind cover, pull the belt until you get the puller to the home position. You will get the same problem if you will not put the main drum puller to the home position. firstname.lastname@example.org
Posted on Jan 24, 2009
SOURCE: 929 service toner sensor error
Error: 929 Toner Sensor
A 929 Service Toner Sensor error indicates a problem with the toner sensor, the front harness cable, or the developer drive. It could also mean that the toner cartridge is defective.
The most likely cause of this error is the toner cartridge itself. This is especially true if it is a new cartridge and the error started after you installed it.
Take the cartridge out of the printer and locate the encoder wheel on the right-hand side of the cartridge. The encoder wheel can be found on the right side of the cartridge (usually over a bar code sticker). It is a thin, black, plastic wheel with small rectangular notches cut into it. This wheel will sometimes get stuck, but you can free it by turning it by hand.
Try moving the wheel forwards and backwards a little. If it does not turn correctly, you will receive a 929 Toner Sensor error on the printer when you try to use the cartridge it is attached to. Note: The encoder wheel moves only a little bit each way. It should not make a complete revolution. If it does, the wheel is probably broken.
Try to move it a little bit each way a couple of times to see if you can free it up. Caution! DO NOT force the wheel as you could break it.
If the wheel on the toner cartridge is stuck, try another new toner cartridge. ( If you do not have another new toner cartridge available, an old toner cartridge or another cartridge from a working printer of the same model will also suffice for this test.) Power the printer off and install the second toner cartridge. Then power the printer back on. If another toner cartridge clears up the 929 error, the printer is fine and the problem is with the toner cartridge. If the error does not clear, there may be a problem with the printer.
If you narrow down the problem to the toner cartridge, call the point of purchase and explain the situation to them. They may have a replacement policy. If they cannot help you, call our Technical Support Center and we will see what we can do to replace the cartridge that is causing the error. We will not be able to reimburse the price of the cartridge, but we can offer you an exchange. To do this, we may ask you to send in your cartridge first. Please note that we cannot offer an exchange on a refilled or refurbished cartridge. For this, you must go through the point of purchase.
Click here to order toner cartridges and other supplies for your printer.
If you receive this error with a second toner cartridge, you may want to check if the Front Harness Cable is plugged into the Toner Sensor. Do the following:
Turn off the printer and remove the toner cartridge.
Look inside the printer at the place where the cartridge goes (on the right). You should see the Toner Sensor. On the back of the sensor assembly, you should be able to see a white cable connector.
Push this white cable connector into the toner sensor assembly by pushing the connector towards the front of the printer.
If you continue to receive the 929 error, your printer will probably need service.
Source: Lexmark KnowledgeBase
Posted on Mar 09, 2009
Just fixed this today. Ink from head cleaning is dripping down on the idler gear that runs the exit rollers. The ink gets thicker as it dries and makes the idler gear (attached to a swing arm) to not sweep up into position. The sensor on the left does not trigger, causing the error. Follow the epson_4000_field_repair.pdf to remove right cover, push down on green head release button to move printhead to left. Remove one screw that holds recovery funnel (left square plastic). Have fun cleaning partially dried overflowed ink in gear area. I removed the E-clip and removed the idler arm to clean completely. If adventurous, remove 4 screws holding print capping mechanism (way down) with a long driver and move slightly to the right to allow the two larger nylon gears to be removed. Clean all you can including the funnel and reassemble. Be sure to open up the drip slot from the maintenance tank side so the problem does not repeat
Posted on May 23, 2011
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[CE40] Image quality control test pattern abnormality
(1) Use "Image quality control abnormal detection counter Y to K display/0 clearing (08-573 to 576)"to check the abnormal occurring condition for each color.
(2) Check "Output value display of image quality sensor / Low-density pattern (05-391-0 to 3)" to
check if the low-density pattern abnormality occurs for each color. The values under 320 for Y, M
and C, and under 220 for K are defined as low-density pattern abnormality.
(3) Check "Output value display of image quality sensor / High-density pattern (05-390-0 to 3)" to
check if the high-density pattern abnormality occurs for each color and identify the color which
pattern is abnormal. If the value is 630 or above, it is defined as high-density pattern abnormality.
(4) Set the values of "Image quality closed-loop control / Contrast voltage (08-556)" and "Image
quality closed-loop control / Laser power (08-557)" to "0" (Invalid).
(5) Perform "Enforced performing of image quality open-loop control (05-394)".
(6) Output the image quality control test pattern (04-270) more than one time and check the patch of the color identified in step (3) to see if the image is abnormal.
(7) Replace the image quality sensor.
(8) Set the values of "Image quality closed-loop control / Contrast voltage (08-556)" and "Image
quality closed-loop control / Laser power (08-557)" to "1" (Valid).
(9) Perform "Enforced performing of image quality open-loop control (05-394)" and make sure it is
completed normally. (Error [CE40] does not appear.)
(10) Clear all "Image quality control abnormal detection counter Y to K display/0 clearing (08-573 to 576).
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