Service manual

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