"CLEAR" key does not function. Took apart and verified buttons and PWB are not damaged. Is this a firmware problem? If so, how do I reset/fix?

Something similar to this:

1. In standby mode,press the "Settings/Registration" key.
2. Press the"Reset" key.
3. Press the"Back" key.
4. Press the"Settings / Registration" key.
5. The service modescreen is displayed.
6. Scroll to Printerthen choose Clear
Use the"Back" key to exit Service Mode

Haven't come across that one before:

Trouble content
Detail SCU
Cause SCU PWB trouble.
Check & Remedy Check the SCU PWB.
Replace the SCU PWB.

You could try resetting the machine:

START (Copy mode)
Press the Program key.
Press the asterisk (*) key.
Press the clear key.
Press the asterisk (*) key.

enter 14, execute

Cheers

Andy

This is an error code for the fuser assembly not getting hot enough in a specified time. To rest the error press the additional function key, then the 2 and 8 keys at the same time, then the additional function key again. You should be in service mode. Press copier, then function ( across the top of the display ), CLEAR, Then ERR then OK. Power cycle the copier then all should be good. If the error comes back you have a heater or thermistor problem that must be fixed. I suggest only resetting the copier just one time. The copier is trying to prevent any damage to the fixing assembly that may be more costly than the original problem.

For many cell phones, the buttons are the main way -- and sometimes the only way-- that you can interface with the device. Most cell phone buttons are simply small domed pieces of metal that flatten out when you press them, completing a circuit with a metal pad on the circuit board and allowing the software to register a keypress. If you need to fix buttons that have stopped working, you'll first want to try some simple fixes, but you will probably have to open up the device.

1.Remove the device's battery, wait about 20 seconds, then replace it. Software errors sometimes interfere with the keypad operation. Removing the battery will reset the software and if the buttons start working again, you will have saved yourself a lot of effort.
2.Take note of which buttons are not working. Once you have the device apart and are staring at the internal keyboard, it may be difficult to remember exactly which buttons are non-functional.
3.Remove the cell phone's plastic housing so that you can get to the keyboard. The exact method for doing this will vary widely based on your exact model of cell phone, but most will have small Phillips or Torx screws on the back side. Once you've removed the screws, use a pry tool to separate the housing and get to the keyboard.
4.Check the rubber keypad for damage. This is the part that contains the keys you actually press, the underside of which will have a small cylinder under each key. When you press down on the button, the cylinder pushes down on the actual keyboard. Any damage to the keys on the topside, or to the cylinders underneath, can cause an individual key to stop working. If there is damage, there is no way to fix it -- you will have to replace the rubber keypad.
5.Check the connector that runs from the keyboard to the rest of the circuit board to ensure that it is seated correctly and is not damaged. If it is damaged, you will have to replace the entire keyboard to restore functionality. Not every keyboard will have a cable, as some are installed directly on the control board, so don't worry if you can't find one.
6.Hold the heat gun about six inches above the keyboard. Turn on the heat gun and move it around the keyboard for about a minute. Do not hold the heat gun in any one place for more than a second or two.
7.Pry up the white sticker that sits on top of the keyboard. This sticker holds the metal domes, which are what get pressed down to actually cause a button press, in place. If the sticker is not coming up, apply heat for another 10 seconds and try again. Be careful that you do not separate the metal domes from the underside of this sticker.
8.Apply isopropyl alcohol to your brush and scrub the metal pads on the keyboard, along with any nearby components on the circuit board. Dirt, debris and moisture damage can build up on the keyboard over time and eventually cause it to stop working. Cleaning it is not a guaranteed fix, but it often helps.
9.Locate the metal domes, which are attached to the underside of the white sticker, for any individual keys that are not working. Place the tip of your small screwdriver in the middle of the concave side of the dome and pull the edge toward the screwdriver. Sometimes, the domes will lose their ability to fully depress, and this process will restore this ability. Don't pull too much -- just enough to add a slightly greater curvature to the dome. Note that this process should be used only when a single button is non-functional. If a group of buttons, or all the buttons, are non-functional, the problem is elsewhere.
10.Replace the white sticker, ensuring that the metal domes are positioned exactly over the metal pads on the circuit board. Reassemble the device and try out the keyboard. If the keys are still not working, the keyboard is probably never going to function again.

I hope you find it very helpful. Best regards.

reset printer via hardware module (permanent solution)

H2 00
[Content]
Thermistor open
[Detail]
The thermistor is open.
The fusing unit is not installed.
Cause Thermistor abnormality
Control PWB abnormality
Fusing section connector disconnection
The fusing unit is not installed.
[Check and remedy]
Check the harness and the connector between
the thermistor and the PWB.
Use TC 14 to clear the self diagnostic display.

To enter the serviceman test command mode, press the keys as
follows:
[#] key → [*] key → [C] key → [*] key
Enter 14 Start to clear the code.

This is a fault of the Printer function's PWB (Printed Wire Board, more commonly referred to as a circuit board).

Hopefully this is a glitch and you'll be able to clear it. To do this press the 'P' (Program) key, then the '*' (asterisk) key, then the 'C' (clear), then the '*' (asterisk) key again (Sequence P->*->C->*. This will place the machine into simulation mode.

Now enter the number 14 on the keypad and press the 'Start' key (the one you normally press to start copies or scans). The machine will clear the fault and reboot. If it doesn't reboot shortly afterwards, press the 'CA' (clear all) key and it should definitely reboot.

If the code returns after rebooting, you need to contact a copier repair technician, as this will most likely be a PWB problem that needs further diagnosis and/or repair.

fuser has oevr heated - needs resestting or replacing

It is a fuser error.

Try resetting. To reset a Rank A error follow these steps:

1. Turn OFF the Main Power Switch.
2. Turn Main Power Switch ON while pressing the Utility/Counter key.
3. Touch [Trouble Reset].
4. Check to make sure that [OK] is displayed and the it has been reset.
5. After turning off the Main Power Switch, turn it on again more than 10 seconds after and check if the machine starts correctly.
If the error recurrs then do the following:
1 Check the Fusing Unit for correct installation (whether it is secured in position).
2 Check the Fusing Unit, PWB-M and PU1 for proper connection and correct or change as necessary.
3 Change Fusing Unit
4 Change PWB-M
5 Change PU1

Update teh firmware from tmobiles website. Download the latest firmware and upload it to your mda... Should fix it.