Yamaha MT4X Owner's Manual - Page 46

Appendix 44 Appendix Troubleshooting If you experience difficulty operating the MT4X, or it does not seem to be working as it should, look up the problem in the following table. You may find it is just a simple error, easy to correct. Symptom Possible Cause Solution The MT4X cannot be powered ON. The power cable is not correctly connected. The POWER switch has not been correctly set. Make sure the power cable is connected to a suitable AC outlet and plugged into the AC IN connector on the MT4X's rear panel. Make sure the POWER switch on MT4X's rear panel is pressed ON. Note: If the MT4X still cannot be powered ON, please contact your Yamaha dealer. Cannot record. Cannot hear a connected instrument. Recordings sound noisy or distorted. Recordings sound dull, suffer from wow and flutter, or are of poor quality. Recordings playback at the wrong pitch. Tape sync does not function correctly. The REC SELECT key is not set correctly. The setting of the ASSIGN key(s) is incorrect. The cassette is loaded incorrectly. The cassette's record protect tabs have been removed. The corresponding input select key is set incorrectly. The fader or monitor is set incorrectly. The recording level is set incorrectly. The record/playback head and capstan is dirty. The wrong type of cassette is being used. The cassette tape is defective. The PITCH control was reset during recording. The tape speed was reset. The SYNC key was not pressed when the dbx™ system was ON. The FSK track was recorded at too low a level. The MIDI-to-FSK converter is incorrectly connected. Set the REC SELECT key correctly. Select the correct ASSIGN key(s) for the group and tracks you intend to use. Make sure the tape is firmly inserted in the cassette compartment. Make sure that the cassette's record protect tabs are intact. Set the input select key to the correct position. Raise the fader for the input module. Make sure the MONITOR SELECT switch is set to CUE and adjust the CUE LEVEL control. Set the channel fader so that the level occasionally reaches +9 dB (with dbx™ ON or +3 dB with it OFF). If the signal level is too low, the recording may sound noisy. If it is too high, distortion may occur. Clean the record/playback head and mechanism. See "Maintenance" on page 45. Be sure to use high-quality Type II (High Bias, 70 µs EQ) chrome cassettes. Try a new cassette tape. Set the PITCH control to the "0" centre-detent position. Press the tape speed select key to set the MT4X back to the correct tape speed. Press the SYNC key and connect the FSK source to track 4. Re-record the FSK signal. Make sure the recording level is set to about +3dB. Make sure the connections are correct. User's Guide