Kenwood LZ-702W - Manual (Page 16)

16 | English
Troubleshooting Guide
What might seem to be a malfunction in your unit
may just be the result of slight misoperation or
miswiring. Before calling service, first check the
following table for possible problems.
? The power does not turn ON.
✔ The fuse has blown.
☞ After checking for short circuits in the wires,
replace the fuse with one with the same
rating.
✔ The motor is not attached to the bracket securely.
☞ Attach the motor to the bracket until it clicks.
?
Nothing happens when the buttons are pressed.
✔ The computer chip in the unit is not functioning
normally.
☞ Press the reset button on the unit (page 3).
? The screen is dark.
✔ The unit is in a location where temperature is low.
☞ If the temperature of the monitor unit drops,
the screen may appear darker when power is
first turned on due to the characteristics of a
liquid crystal panel. Wait a while after turning
power on for the temperature to rise. Normal
brightness will return.
✔ The "BRT", "BLK", "CONT", and other screen control
levels are too low.
☞ Adjust the "BRT", "BLK", "CONT", and other
screen controls to obtain appropriate
illumination, or restore them to factory-set
levels with reference to Settings> (page 10).