Sharp VL-A111UL Service Manual - Page 35

6-8. TROUBLE SHOOTING 6-8-1. Classification of troubles No operation at all No tape ejection No LCD light-up No picture in EE mode No picture playback No video recording Streaking at self-recording/playback Black streaking VL-A111U/AH131U VL-AH151U/AH161U ûYES Check the Power circuit and system control circuit. ûYES Check the system control and loading motor circuit. ûYES Check the inverter transformer and power circuit. ûYES * Check the DSP circuit. ûYES ûYES ûYES Check the DSP circuit, RF circuit and head amplifier circuit. Check the DSP circuit, RF circuit and head amplifier circuit. Check the DSP circuit, RF circuit and head amplifier circuit. û Noises at regular intervals in playback No recorded characters on screen No color in EE mode No color in playback No color in recording No sound Error message (e.g. E007) Normal û û û û û ûYES û YES Check the RF circuit, system control circuit and DSP circuit. Check the LCD circuit and character generator (IC707). ûYES * Check the Video out circuit and DSP circuit. ûYES ûYES Check the RF circuit, Video out circuit and DSP circuit. Check the RF circuit and DSP circuit. ûYES Check the audio circuit and RF circuit. ûYES Check the system controller and CAP MOTOR DRIVER circuit. ûû 35