JVC GM-F420S Instruction Manual - Page 26

Troubleshooting Solutions to common problems related to the monitor are described here. If none of the solutions presented here solves the problem, unplug the monitor and consult an authorized dealer or service center. Power is not supplied. ] Is the power cord connected (see page 6)? ] Is the main power switch (POWER) turned on (see page 10)? No picture. ] Is the correct input selected (see page 10)? ] Connect the signal cable firmly. ] Check if the input signal format is acceptable on the monitor. ] Are the devices connected correctly (see page 6)? ] Are signals being input from the connected devices? ] Is brightness adjusted correctly (see page 13)? Self-diagnostic lamp lights (flashes). ] See page 28 for details. No sound. ] Is the volume set at minimum (see page 10)? ] Is the muting function activated (see page 10)? ] Is "AUDIO ASSIGN" set correctly (see page 13)? The remote control does not work. ] Are the batteries installed correctly (see page 5)? ] Are the batteries exhausted? ] Is the front end of the remote control pointing toward the remote sensor? ] Is there any object blocking the path between the remote control and the remote sensor? ] Is the monitor too far away from you? ] Are the functions of motion sensor set to "ON"? Symptom Power is suddenly turned on or off. The picture becomes blurred. Color is abnormally bright or dark. Color is poor or unstable. The picture is cut or shifted toward one side. Some items cannot be selected on the menu. "PLEASE ENTER PASS ID" appears when trying to turn on the monitor. Buttons on the main unit do not work. The motion sensor does not work. The motion sensor does not detects the human in the detection area. The motion sensor works while no human is in the detection area. Probable cause and corrective action • The Power-on/off Timer is activated. Deactivate it. • "AUTO POWER" of "MOTION SENSOR" is set to "ON." Deactivate it. • Adjust "CONTRAST" or "BRIGHT" of "PICTURE SETTING." • For RGB input, adjust "DOT CLOCK" and "CLOCK PHASE" on the main menu. • If the connection cable used for the RGB IN terminal is long, set "SYNC TERM." to "LOW." • Adjust the picture quality on "PICTURE SETTING" of the main menu. • If "TEMP. OVER" is displayed, follow the procedure described on page 28. Select the correct color system. • Input signals (scanning frequency, etc.) are not appropriate. • Adjust the size and position properly. Items not available for the current input or signal format cannot be selected. Change the input or signal format. Page 17 19 13 13 16 13 28 14 8 13 - The Security Lock is activated. Enter the password to turn on the monitor, and then deactivate the Security Lock. 15, 17 • The Control Lock is activated. Deactivate it. 16 • You cannot use the buttons for the items controlled by the external control. Disable the external control. - • You cannot use the buttons for the items controlled by the motion sensor. Deactivate the control by the sensor. 19 If the detection parts (lens) of the sensor is dirty, the sensing level decreases. Wipe the lens with soft cloth. - • The motion sensor does not work when all the motion sensor settings are "OFF." 19 • The sensor will not detect a human who is not moving. • The detectivity of the sensor decreases when the temperature difference between a body and environment - is small. In the following cases, the sensor detects the motion and makes the monitor perform the specified operation. • Animals such as dogs and cats are moving around the monitor. - • Clothes (such as curtain) or plants swaying in the wind is around the monitor. 26