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Re: Blinking error light CH will not let machine turn on
Side door of copier is open just close it properly .if error stills just check by pressing start key what is sub code if 00 developer unit is missing if 01toner catridge is missing .just check all connectors of developer unit and toner unit.code will bi removed
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Below are instructions that I have found from the internet. Hope that they will help.
Open the front cover of the printer.
Hold down the Go button for 4 seconds until all the LEDs light up. Then release the Go button
Remove the drum unit and toner cartridge assembly.
Replace the drum unit and toner cartridge assembly back into the printer.
Close the front cover of the printer
Your drum unit should now be reset
MFC / DCP PRINTER SERIES
1.Remove the drum unit and toner cartridge. Wait 1 or 2 minutes.
2.Replace the drum unit and toner cartridge into printer.
3.The error message "Change Drum Soon/Drum end soon" will continue to appear if the drum counter was not reset when you replace the drum unit.
4.To clear this error message, you need to reset the drum counter as instructed below.
5.Make sure that the machine is turned on.
For MFC users: To confirm you are installing a new drum, press 1. For DCP users To confirm you are installing a new drum, press the Up Arrow key
7.When the LCD shows Accepted, close the front cover.
8.Your drum is now reset.
Resetting the drum unit will not improve print quality. It only resets your drum and allows you to continue to print. You decide when to replace the drum unit not the manufacturer!
This machine has a separate drum and toner cartridge. Replacing the toner does not reset the drum light. Double check that the light on is, in fact, the drum light, and if it is, replace the drum unit. This should resolve your problem.
In order to replace the drum unit, do this:
1) With the printer on and the drum light blinking, open the front cover.
2) Press and hold the Go button for about 4 seconds until all the LEDs light up. Once all LEDs light up, release the Go button.
3) Pull the print assembly out of the machine.
4) Push down the green lock lever to take the toner cartridge out of the drum unit.
5) Put the toner cartridge into the new drum unit.
6) Reinsert the print assembly into the machine.
7) Close the front cover and verify that the lights turn off.
It is theoretically possible that you could reset the counter without actually changing the drum by simply skipping steps 3-6 above, but I have never tried it before and Brother may be checking a chip on the drum unit to verify that it is, in fact, a new drum unit. If they are, you will have to actually replace the unit to make the light go off. I would strongly recommend against resetting the counter without actually changing the drum though, as your print quality will degrade and the machine may start to dump toner into the inside creating a rather large mess and a hefty repair bill.
CH are in two forms steady and blinking CH. Steady CH is associated with door switch for either front cover or side cover. Make sure that the front cover and the right side cover are closed properly.Secondly, Blinking CH is associated with the toner cartridge or the developer unit not being sensed by the machine. Make sure that the developer unit is well locked in the machine. Pull out the toner cartridge and insert back with some force into the machine, it should clear this sign. If it does not, replace a new cartridge Sharp AR016FT. Let me know if any further clarification/ assistance is required.
Good Luck! Appreciate generously, if the solution could have been of any help! CreativeTECH
Hope you are fine, ch are in two forms steady one and the blinking ch. Steady CH This is associated with door switch for either front cover or side cover. Check that the front cover of the copier and the right side is well closed. Blinking CH This is associated with the toner cartridge or the developer unit not being sensed by the machine. Make sure that the developer unit is well locked in the machine. Pull out the toner cartridge and insert back with some force into the machine, it should clear this sign. If it does not, replace a new cartridge Sharp Ar016ft and you are done. Good luck.
The steady lower light indicates the unit needs a new toner cartridge, MLT-D108S. Did you previously see this light blinking or blinking rapidly? (Those indicate the toner being low.) Replace the cartridge and check for any other error lights. Turn off the machine and let it cool. Then open the front cover and pull the old toner cartridge. Open the package with the new cartridge, remove the packing tape and paper that protects the cartridge and gently shake it (avoid touching the blue or green parts of the OPC drum). Press the cartridge into the slot until it is fully seated. Close the front cover.
The green/red blinking power light is not one I'm seen before. The printer indicates a non-toner failure (open cover, no paper, LSU failure, etc.) with a steady red light.
CH is a door open?Open side door before you open the front door,check that drum,dev & toner unit is installed if this doesnt solve it push the righthand door downwards so that the switch makes connection.
Indication Cause and remedy Page Drum replacement required indicator Steadily lit Replacement of drum cartridge will be needed soon. Prepare a new cartridge. 70 Blinking Drum cartridge must be replaced. Replace it with a new one. 58 TD cartridge replacement required indicator Steadily lit Replacement of TD cartridge will be needed soon. Prepare a new cartridge. 70 Blinking TD cartridge must be replaced. Replace it with a new one. 57 Misfeed indicator Blinking A misfeed has occurred. Remove the misfed paper referring to the description of "MISFEED REMOVAL". 63 SPF misfeed indicator Blinking An original misfeed has occurred in the SPF. Remove the misfed originals referring to the description of "D: Misfeed in the SPF". 67 Power save indicator is steadily lit. The unit is in the preheat mode. Press any key to cancel the preheat mode. 54 The unit is in the auto power shut-off mode. Press the start ( ) key to cancel the auto power shut-off mode. 54 The paper tray indicator is blinking. The paper tray is not installed properly. Push the tray into the unit securely. – "CH" is blinking in the display. The TD cartridge is not installed. Check if the cartridge is installed. 57 "CH" is steadily lit in the display. Side cover is open. Close the side cover securely by pressing the round projections near the side cover open button. – "P" is blinking in the display. The paper tray or multi-bypass tray is empty. Load paper. 15, 17 A misfeed has occurred in the paper tray or multi-bypass tray. Remove the misfed paper. 63 A letter and a number appear alternately. The scan head locking switch is locked. Unlock the scan head locking switch. 9 A letter and a number appear alternately. The unit will not function. Turn the power switch off, remove the power cord from the outlet, and contact our Technical Assistance Department at 1-(630)378-3590 in the USA or 905-568-7140 in Canada. –