What is control board assemble and how can I see it?

HP LASER PRINTERS 2, 2D, 3, 3D

1. Defective cable laser scanner to dc controller.

2. Defective laser scanner assembly.

HP LASER PRINTERS 2P, 2P+, 3P
1. Bad scanner motor.

2. bad dc controller.

HP LASER PRINTERS 3SI, 4SI, 4V
1. Faulty cable assembly.

2. Scanner motor problem.

3. Defective laser scanner assembly.

4. Defective dc controller.

HP LASER PRINTERS 4, 4+, 5
1. Faulty laser scanner cable.

2. Defective laser scanner assembly.

HP LASER PRINTERS 4L, 4P, 5P, 5L, 5SI
1. Temporary error. Scanner startup failure.

2. Improperly fitted scanning assembly.

3. Scanner cable problem.

4. Defective laser scanner assembly.

5. Defective dc controller board.

HP LASER PRINTERS 1200, 2200, 3100 FAX, 3200 FAX, 4100
1. Temporary error. scanner rotation error.

2. Replace contact image sensor.

4. Replace laser scanner.

5. Replace cables to laser scanner and engine board
HP LASER PRINTERS 1100, 2100, 4000, 4050, 8000
1. Scanner start up error
2. Replace scanner cable to the D.C. controller and back to scanner. Or replace scanner cable from engine board to scanner ***'y.
3. Replace scanner ***'y.
4. Replace the engine board.
5. Replace the D.C. controller only on the 8000.
HP LASER PRINTER 2300 ERROR 52.X
1. A temporary scanner start up error.
2. This can also be the shutter tab on the print cartridge. Replace the toner cartridge.
3. Replace the scanner ***'y.
4. Replace the engine board.
HP LASER PRINTERS 4200, 4300 ERROR 52.XX
1. Printer scanner speed error has occurred.
2. Replace laser scanner ***'y
3. Replace the D.C. controller ***'y
HP COLOR LASER PRINTER 4600, 5500 ERROR 52.XK, 52.XC, 52.XM, 52.XY
1. Error code K - No Black Color.
2. Error code C - No Cyan Color
3. Error code M - No Magenta color
4. Error code Y - No Yellow color
5. Replace laser scanner ***'y
6. Replace the D.C. controller ***'y
HP LASER PRINTERS 5000, 5100
1. Printer scanner speed error has occurred.
2. Replace laser scanner ***'y
3. Replace the D.C. controller ***'y
4. Replace cable ***'y from scanner to D.C. controller.
HP LASER PRINTERS 8100, 8150
1.Laser scanner error/start up/rotation error
2.Replace laser scanner ***'y.
3.Replace D.C. controller board.
4.Replace cable ***'y from scanner to D.C. controller
HP LASER PRINTER 4500, 4550
1. Temporary error. Laser scanner error/start up/rotation error

2. Replace laser scanner.
3. Replace D.C. controller ***'y
HP COLOR LASER PRINTERS 4600, 5500
1.Laser scanner error/start up/rotation error.
2.Take the toners out and reseat them, or replace them
3. Replace laser scanner ***'y
4. Replace D.C controller board.
HP LASER PRINTER 8500, 8550
1. Temporary error. Laser scanner error/start up/rotation error

2. Replace laser scanner motor.
3. Replace D.C. controller ***'y

HP LASER PRINTER 9000
1. Temporary laser scanner error/start up/rotation error

2. Replace laser scanner.
3. Replace upper cable guide assembly.
4. Replace DC controller.

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Door or Lid Latch Assembly If the washer won't spin or agitate the lid switch assembly might be defective. This is a very common problem. The lid switch assembly can fail either mechanically or electrically. Test any electrical switches with an Ohm meter for continuity. The switches should have continuity according to their design.

Door Lock Motor and Switch Assembly If the washer won't spin or agitate the door lock assembly should be checked. The door lock can fail either mechanically or electrically. Test any switches on the door lock with an Ohm meter. The switches should have continuity according to their design.

Motor Control Board If the washer won't spin or agitate the motor control board might be defective. The motor control board provides power to the motor as well as direction and force. If the motor control board is defective the washer may not work at all or function properly.

Hello Carol;

My name is Peter. I am a retired field service appliance technician.

F70:

No communication between the electronic control board and the user interface control board assemblies.

Unplug the dryer. Check the wire harness connections between the main electronic control board and the user interface control board assemblies. If the connections are sound, have a technician diagnose the cause of the communication failure. The main electronic control board and/or the user interface control assemblies might need to be replaced.

The F11 fault code indicates a serial communication error between the Machine Control board and the Motor Control board. This can be caused by several different problems.

A failed Machine Control board could be failing to provide the Motor Control board with proper voltage. If this is causing the F11 code, then the Machine Control board would need to be replaced.

The Machine Control board could also be failing to supply proper voltage to the door lock assembly. The Machine Control board would need to be replaced for this failure as well.

Voltage flows from the Machine Control board to the Door Lock Assembly. The Door Lock then energizes and closes the Door Lock MAIN Switch. Voltage flows out of the Door Lock Main Switch to the Motor Control board. So if you have power into the Door Lock Assembly but not out of the Main Door Lock Switch, it will give you an F11. If so, you will need to replace the Door Lock Assembly.

You could have a bad Motor Control board that is causing this failure. A bad wiring connection between the Motor Control board and the Machine Control board could also cause this fault code. A bad wiring connection between the Motor Control board and the drive motor is also a possible failure. A failed drive motor could also cause the F11.

With so many possible causes for this failure, I recommend calling a service technician to diagnose and repair the problem in your washer. If you are able to unplug the washer and check the wiring connections, you may be able to find a loose wire harness connection that is causing the problem. Much of the diagnosis for the potential problems noted above requires live voltage checks. I do not recommend conducting these types of checks yourself. Unless you want to take a chance and replace the Machine Control board and the Door Lock Assembly,

You are experiencing a vent issue - While in wash cycle, Main Control Board does not receive signal from vent assembly that vent plunger is closed. Plunger status is sensed with optical sensor in vent assembly. Check wiring between vent assembly and Main Control Board. If wiring correct, replace vent assembly. If error still exist, replace Main Control Board.

Hello, welcome to FixYa

Based on the info you provided, specifically the E41 error, It sounds like the unit is detecting an unlocked door, loose wire, or the control itself is bad. (E41= Shorted or open. Defective door lock assembly.Around 1500Ohms. Defective control board.)

The PAU simply indicates the control thinks it has been paused...that may be just a side affect of the door lock assembly.

Here's how to check...

**Unplug the unit from the wall first...safety first**

Remove the door lock assembly and measure the resistance of the PTC. Should get a reading of around 1500ohms.

Attached here is a great tutorial for accessing the assembly for testing and replacing.

http://www.repairclinic.com/PartDetail/Door-Switch-Assembly/131763202/1531974

Let me know if you need further assistance going forward or if anything is not clear.

Thank's again for visiting FixYa today. Good luck.

Regards,

Macmarkus :)

The F1 error code on Whirlpool Cabrio Top Load Washers means primary control failure . Check every wiring harness to the machine control assembly for any poor and loose connection. Clean the wiring harness connectors and terminals to ensure good connections.

Resolving F1 Error on Whirlpool Cabrio Top Load Washers

1. Safety first. Unplug the machine.
2. Remove the three hex-head screws from the rear of the console assembly.
3. Lift the console assembly off the cabinet and disconnect the user interface wiring harness from the machine control board.
   
4. Disconnect and clean every wiring harness connector and terminal on the machine control board. Ensure that all connections are good and tight.
5. Reconnect the wiring harness connectors and reassemble the console.
6. Replace the machine control board if the problem is not resolved.
7. Pull the pressure transducer tube off the fitting on the machine control board.
8. Remove the hex-head control board mounting screw.
   
9. Lift the front of the machine control board, slide it out from under the clips at the back, and remove it.
10. Install the new machine control board in reverse order of the steps above.
11. Reinstall the console and secure it with the three mounting screws.
    

The problem is with th door lock assembly or the control board. You can meter the PTC on the door lock assembly to determine if the problem is in the lock or control board. If PTC meters open or closed = bad door lock assembly. 1200 to1500 ohms = bad control board.