Denon DN-951FA Comes up with error code 37-65 when switched on. Wont rotate. But have replaced the laser, still no good. The track selector works and so does the stop start (I thnk). Can you help ?

HI ALL YOU NEED TO DO IS PUT IN A CD/DVD LENS CLEANER CAUSE NOW ITS DIRTY THEREFORE THE LASER IS UNABLE TO READ THE DISC.

sounds like the optical pickup (laser) has gone bad. Would have to be replaced.

Don't usually have to do any alignment when replacing the pickup.

HP LASER PRINTER 8100, 8150 ERROR 57.5 code

1. The fan 1 or the laser/scanner fan has occurred.

2. Replace fan 1

3. Replace the D.C. controller board.

Try reseating the connector to the fan, it may have worked loose.

Hello,

The F71 error code means "User interface heartbeat failure" to put that in simple terms what it means is,the touchpad/cycle selector is not talking to the main control board. To check to see why that code is being displayed ya would need to make sure that all the wire plugs between the selector and the control board are tight and in fully pressed in and making good contact at the respective connection point on the circuit board.

If ya find the wire connections to be good and tight,ya would need to start the washer and if the drum rotates the cycle selector would have to be replaced. If the drum does not rotate the main control board would need to be replaced.

F70 and F71 are two logic board error codes that point at a communication error between the main logic module and the control pad (user interface and CCU), and between the motor control unit and central control (MCU, andd CCU that is main control module).

Repair is difficult, as motor, wiring and voltages from control modules must be tested. Try first doing a reset, by disconnecting power cord or tripping circuit breaker and leaving power off for five minutes.

If that does not help and errors come back, then the best thing to do is calling the service number listed on the user manual.

Here extensive explanation of error codes and relative troubleshooting:
F70: CENTRAL CONTROL UNIT HEARTBEAT FAILURE
If a Central Control Unit Heartbeat Failure is displayed, no communication is detected from the Central Control Unit to the User Interface.

1. Check for continuity of the User Interface harness.
2. Check wire harness connections to the User Interface and the Central Control Unit.
3. Replace User Interface if drum is rotating.
4. Replace Central Control Unit if drum is not moving

Hope this helps.

You might want to look at your owner's manual and see what ERROR MESSAGE 87 means.

A laser/scanner error has occurred

Recommended action:
1. From the DIAGNOSTICS menu, run the
laser/scanner motor component test.
Verify that you can hear the motor
rotate.
2. If you cannot hear the motor rotate,
verify that connector J1702 and J1505
are fully seated on the DC controller
PCA (ECU).
3. Verify that the connector J12 on the
laser/scanner assembly is securely
attached.
4. If the error persists, replace the laser/
scanner assembly

help me clear the system error C2202 on my kyocera KM-C2630D. multifunction copier

clean the lasers with a damp cotton bud.
take the lid off, unscrew the circut boards, remove carefully some of the connected wire looms 2 get better access, slighly dampen 1 end of a coton bud with plain water, clean the lens through the hole, repeat with the dry end of the cotton bud. re-assemle.