Trouble Shooting - Sharp VL-H870U Service Manual

VL-H870U
VL-H875U
VL-H890U

6-5. TROUBLE SHOOTING

6-5-1. Classification of troubles
No function 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
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)
Black streaking
Normal
û
Check the Power circuit and system control circuit.
YES
û
YES
Check the system control and loading motor circuit.
û
Check the inverter transformer and power circuit.
YES
û
YES
* Check the camera section and Y/C circuit and LCD
circuit.
û
YES Check the Y/C circuit and head amplifier circuit.
û
YES Check the Y/C circuit and head amplifier circuit.
û
Check the Y/C circuit and head amplifier circuit.
YES
û
YES Check the ATF circuit.
û
Check the LCD circuit and character generator (IC705).
YES
û
* Check the camera section and Y/C circuit.
YES
û
Check the Y/C circuit and head amplifier circuit.
YES
û
Check the Y/C circuit and head amplifier circuit.
YES
û
YES Check the audio circuit.
û
YES Check the system controller and CAP MOTOR DRIVER
circuit.
6-16
VL-H870U
VL-H875U
VL-H890U