Sony UVW-1800 Error Code

Error 91-125 on a Beta SP UVW 1800 is a diagnostic code indicating a problem with the audio channel 1 input. The error message "appears like a feedback on audio channel 1" suggests that there is a signal present on audio channel 1 even though nothing is connected to it. This could be caused by a malfunctioning input or a problem with the internal signal routing.
Here are some steps you can try to troubleshoot this issue:

1. Check all audio inputs and outputs to ensure that nothing is connected to audio channel 1.
2. Disconnect all cables from the Beta SP UVW 1800 and power it off. Wait for a few minutes and then power it back on.
3. Check the audio routing settings in the menu of the Beta SP UVW 1800 to ensure that audio channel 1 is not being routed to an unexpected location.
4. Inspect the audio channel 1 input for any damage or corrosion.
5. Try a different audio cable or input device to rule out any issues with the current cable or device.
6. Check the manual of the Beta SP UVW 1800 for any specific troubleshooting steps.

If none of the above steps resolve the issue, it may be a hardware issue and you may need to contact the manufacturer for further assistance. It could be a malfunction in the audio channel 1 input circuit or a problem with the internal signal routing. A qualified technician should be able to diagnose and repair the problem.

Error 02-403 is "tape slack in ff/rew". Although you were able to get the tape out, the threading ring may not have returned to the unthread position. With the power disconnected and the top of the deck off, look at the mechanism; on the right side, there is a small gray motor with a black wheel in front of it. By turning this wheel, you will be able to make the threading ring turn; turn it so the ring goes clockwise. When the ring has gone as far as it can, it will be in its unthread position, and the deck will probably work normally.

I found a site where the error code are.
http://z.baidu.com/question/97641503.html
02-274 Failed to detect the T reel FG during threadingI hope this helps

Do you get any Error mesages on the display ?

UVW-1800 error 02-694 indicates a problem with one or both reel motors. check the cables going to both motors; have seen failures related to these cables.

Most likely problem when a Beta SP deck won't take the large tapes is a bad cable in the cassette housing. Replacement isn't too difficult, and the cable only costs about $20.00.

02-874 error code signifies a defective takeup reel. The reel is not winding the tape in, so the deck won't go through the eject procedure. Check the connection to the takeup reel motor; if that's OK, the motor itself may be bad. Rarely, the takeup reel motor assembly will need to be replaced; usually it's a connection problem.

error code 02-395 points to a problem with one or both reel motors. a good technician should be able to fix this easily.

check your tape deck unit throughly check for any physical damage of REWIND/FORWARD Gears.and FLY Wheel.
and dis locateion of some lever positions.
defnitly you get solved