My hitachi c8fb2 saw won't turn off

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Its not too difficult:
1) There are 2 retainer pins located on the rear slide support (#4 on breakdown) - carefully drive these out with a punch - be careful to support the bracket so you don't break it.
2) remove the rear support and slide the saw head and arms out of the bearing.
3) Remove the 2 covers (front and rear) over the bearing
4) loosen the allen head set screw on the housing that holds the bearing in place
5) using a large socket and a plastic hammer - gently tap out the old bearing.
Reverse process to replace.
Do not use grease or oil on the bearing or slides - use a pure, clear silicone spray that dries completely - grease & oil attract & hold dirt and debris and will cause bearing failure.
Hitachi C8FB2 8 1 2 Twin Rail Sliding Compound Miter Saw Parts

Check the input power is coming or not. Check fuse inside control board & wiring too. If everything ok then it's problem of control board

Cause: Head too hot, exceeds the threshold, usually the color Catridge
Solution:

1. Turn Off printer, cable power still plug in.

2. Press Stop/Reset button, don't release the button.

3. Press Power button by holding without release and than release Stop/Reset Button.

4. Press Stop/Reset button two times (2x) now release the Power Button.

5. Wait until service mode to zero (0).

6. Turn off the Printer, cable power still plug in.

7. Press Stop/Reset button, don't release it.

8. Press Power button don't release & than release Stop/Release button.

9. Press Stop/Reset button four times (4x), wait until service mode to "1"

10. Turn off printer, and loose cable power, wait for one (1) minute.

11. Connect cable power, turn on printer again, now this printer ready to use.

To solve your problem follow the instruction step by step...

1. Turn Off printer, cable power still plug in.

2. Press Stop/Reset button, don't release the button.

3. Press Power button by holding without release and than release Stop/Reset Button.

4. Press Stop/Reset button two times (2x) now release the Power Button.

5. Wait until service mode to zero (0).

6. Turn off the Printer, cable power still plug in.

7. Press Stop/Reset button, don't release it.

8. Press Power button don't release & than release Stop/Release button.

9. Press Stop/Reset button four times (4x), wait until service mode to "1"

10. Turn off printer, and loose cable power, wait for one (1) minute.
Connect cable power, turn on printer again, now this printer ready to use

To solve your printer problem using the following directions..

Follow this instruction step by step.

1. Turn Off printer, cable power still plug in.

2. Press Stop/Reset button, don't release the button.

3. Press Power button by holding without release and than release Stop/Reset Button.

4. Press Stop/Reset button two times (2x) now release the Power Button.

5. Wait until service mode to zero (0).

6. Turn off the Printer, cable power still plug in.

7. Press Stop/Reset button, don't release it.

8. Press Power button don't release & than release Stop/Release button.

9. Press Stop/Reset button four times (4x), wait until service mode to "1"

10. Turn off printer, and loose cable power, wait for one (1) minute.

11. Connect cable power, turn on printer again, now this printer ready to use.

1. Turn Off printer, cable power still plug in.

2. Press Stop/Reset button, don't release the button.

3. Press Power button by holding without release and than release Stop/Reset Button.

4. Press Stop/Reset button two times (2x) now release the Power Button.

5. Wait until service mode to zero (0).

6. Turn off the Printer, cable power still plug in.

7. Press Stop/Reset button, don't release it.

8. Press Power button don't release & than release Stop/Release button.

9. Press Stop/Reset button four times (4x), wait until service mode to "1"

10. Turn off printer, and loose cable power, wait for one (1) minute.

11. Connect cable power, turn on printer again, now this printer ready to use.

Follow this instruction step by step.

1. Turn Off printer, cable power still plug in.

2. Press Stop/Reset button, don't release the button.

3. Press Power button by holding without release and than release Stop/Reset Button.

4. Press Stop/Reset button two times (2x) now release the Power Button.

5. Wait until service mode to zero (0).

6. Turn off the Printer, cable power still plug in.

7. Press Stop/Reset button, don't release it.

8. Press Power button don't release & than release Stop/Release button.

9. Press Stop/Reset button four times (4x), wait until service mode to "1"

10. Turn off printer, and loose cable power, wait for one (1) minute.

11. Connect cable power, turn on printer again, now this printer ready to use.

Follow the instructions step by step

1. Turn off printer, cable power still plug in,
2. Press Stop/Reset button don't release
3. Press Power Button don't release and than release Stop/Reset button
4. Press Stop/Reset button 2X , wait until service mode to " 0 "
5. Turn off printer, cable power still plug in
6. Press Stop/Reset button don't release
7. Press Power Button don't release and than release Stop/Reset button
8. Press Stop/Reset button 4X , wait until service mode to " 1 "
9. Turn off printer, and loose cable power, wait one minute.
10. Connect cable power, turn on printer again, now this printer ready to use.

After removing the black brush caps, take compressed air and blow any debris out. Next take a pair of needle nose pliers and gently pull the brush,,, ( you can use a moderate force). If it does not pull out you may need to remove the black vent cover adjacent and use a tiny screwdriver between the brush and the armature, as there may be a slight burr on the brush. Good Luck.