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Sounds like the daisy wheel is loose. Wiggle the daisy wheel side to side. there should be little movement. If it is loose, remove it and reinstall it. also, look for foreign objects down in the wheel printhead assembly.
If that doesn't fix it, remove the daisy wheel,unplug machine and let it rest for 20 minutes, or so. . reinstall the wheel and see what happens.
first try turn typewriter off, (button on left panel toward the back), then turn it back on, and while hold down the CODE button, press RESET key, the whole print head will move and reset
if that doesn't work, power off again, open the cover, release the lever to the Daisy Wheel, and inspect that Daisy Wheel - mine has a bent forward letter, and another letter was kinda stuck to the side of another letter... I gently fix both letters, put the Daisy Wheel back in, firmly lock it in place with the lever, close the cover... and voila, it works like a charm.
While you have it open you might want to dust (use the cleaning spray can duster)... You wouldn't believe what I found in my typewriter... Good luck!
If that doesn't work, I would replace the Daisy Wheel. gkt
The SX 4000 is a "Daisy Wheel" printer. A plastic Wheel with the letters embossed on them spin via the input of the keyboard. I would suggest that your Daisy Wheel mhas slipped its index, presenting a offset letter., or the wheel is on inproper, but I do not see how it could happen, short of forcing it on. You may have to buy another Daisy Wheel, if that one is broken at the hub. See:
make sure the black lever on the right of the printhammer is all the way forward.
if it still doesn't work, it will need a trip to the repair shop, or just look for a cheap replacement at a thrift shop.
Sounds like the gears you cleaned may be dry and sticking, spray a little WD40. or that gear on the right side is still out of time. I think there is a spring clutch in the gear train which may be bad. One secret to repairs is to perform the same actions that you want the typewriter to do by hand and watch closely. You may see something not movving, or moving slow that under power you won't see.
This part yu take off, the pin goes into a slot that goes around inside a cam. If you have that pin not in the slot you will get this lock up. Try taking the part you mentioned out or remove wht is called the ribbon plate, which is the part where the ribbon sets on, then turn the machine on or wind the printer motor by hand to home out or bring the printing unit to the home or start position, turn off and very carefully install the parts you tokk off making sure the pin in the ribbon lift (The small part yout ook off on the right side of the printer) is in the correct cam track or small track or canal. Once installed you can rotate the motor by hand an see if it moves freely. GOOD LUCK
The ML-300 needs to be reset each time the Daisy Wheel is removed or replaced or if the Keyboard Switch changes
position. According to Brother, if this is not done the typewriter will print incorrect characters.
Try these steps:
1) Open the Top Cover. There is a lever directly behind the Daisy Wheel. Pull the lever back towards you. Remove
the Daisy Wheel by pulling it up and out.
2) Verify that it is the Standard Daisy Wheel that came with your machine and not a Symbol or International Daisey
Wheel. Write down the Pitch (10, 12, or dual pitch 1012) printed on the wheel.
3) Reinstall the Daisy Wheel (the plastic top ear goes to your right.) Push the lever (step 1) forward.
4) Press the ALT key plus the PITCH key and the number 1 key simultaneously. Verify the Pitch setting is the same as
is printed on the Daisy Wheel.
5) Press the CODE key plus the RESET key and the letter Q key simultaneously. This will reset the typewriter
mechanism and align (or time, in technical terms) the carriage mechanism.
Check if the typewriter prints correctly now. If still incorrect, perform these additional steps.
6) Verify the three position Keyboard Switch (inside the top cover, on the right side, at the bottom) is in the
I=Standard position. The other positions are: II=International and III=Symbol.
7) If the Keyboard Switch is in the correct position, slide it to position III and then back to I. (This will clean the
switch contacts in case they are dirty and not making good electrical contact.
8) Press the CODE key plus the RESET key and the letter Q key combination again to reset the typewriter mechanism.
Check if the typewriter prints correctly now.
If still incorrect, the only other things I can think of is that:
1) an incorrect Daisy Wheel is installed that does not work in the ML-300. Brother sell a "B type" Daisy Wheel with
two plastic ridges/raised slots below the center of the Daisy Wheel (viewed with the raised top tab on your left.)
The B type are incompatible with your machine.
2) the typewriter has failed and needs repair.