Hitachi CMP4221U Owners Guide - Page 32

ENGLISH TROUBLESHOOTING Symptoms That Seemingly Appear to be Failures Make the checks suggested below depending on the symptoms observed. If the symptoms remain uncorrected, contact your dealer. WARNING Self servicing can be hazardous. ʳ Symptom Ɣ There is no picture and the indicating lamp is off. Point to check Ɣ Check to see that the power cable is properly connected. Ɣ Press the main switch. See Page 15 16 Ɣ In RGB mode, the message "NO SIGNAL" is displayed. Ɣ In Video mode, the message "NO SIGNAL" is displayed. Ɣ There is no picture and the indicating lamp lights orange. Ɣ The message "OUT OF RANGE" is displayed. No sync signal is detected. 13 NO SIGNAL Ɣ Check that the signal cable is properly connected. Ɣ Make sure that the computer, imaging equipment, etc., is turned on. 14 Ɣ Make sure the computer is not in power-save mode. Ɣ Ensure that the input selection matches the connection terminal. An input signal is received abnormally. 13 OUT OF RANGE Ɣ Ensure that the input signal matches the monitor specifications. Ɣ Check to see that the signal cable is properly connected. 14 Ɣ The indicating lamp is lit normally but there is no picture. Ɣ Check the contrast and brightness settings (adjust them for higher 21 contrast and brightness). Ɣ Check to see that the signal cable is properly connected. 13 14 Ɣ The display image appears slanted. Text displayed across the screen appears vertically streaked, with the characters in vertical columns blurred. Ɣ Adjust the clock frequency and the phase. (Adjust the clock frequency 22 first, the dot clock phase next.) (RGB input) 34 Ɣ Text displayed across the screen appears blurred. Ɣ Adjust the clock phase till the desired clarity is obtained. 22 A fine pattern flickers when displayed on the screen. (RGB input) 34 Ɣ The remote control does not work. ʳ Ɣ Ensure that the batteries in the remote control are inserted with 11 the correct polarity. Ɣ Check to see that the batteries in the remote control are functional. 32