Panasonic TH50PHD7UX TH37PWD7UX User Guide - Page 37
Troubleshooting
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Troubleshooting Before you call for service, determine the symptoms and make a few simple checks as shown below. Picture Symptoms Interference Normal Picture No Picture No Picture Sound Noisy Sound No Sound No Sound Normal Sound Checks Electrical Appliances Cars / Motorcycles Fluorescent light Volume (Check whether the mute function has been activated on the remote control.) Not plugged into AC outlet Not switched on PICTURE and BRIGHTNESS/Volume setting (Check by pressing the power switch or stand-by button on the remote control.) If a signal with a non-applicable colour system format, or frequency is input, only the input terminal indication is displayed. No Colour Colour controls set at minimum level. Normal Sound (see page 21, 22) COLOR SYSTEM (see page 34) No remote control operations can be performed. Check whether the batteries have discharged completely and, if they have not, whether they were inserted properly. Check whether the remote control sensor is exposed to an outdoor light or a strong fluorescent light. Check whether the remote control designed specifically for use with the unit is being used. (The unit cannot be operated by any other remote control.) A cracking sound is sometimes heard from the unit. If there is nothing wrong with the picture or sound, this is the sound of the cabinet undergoing very slight contractions in response to changes in the room temperature. There are no adverse effects on the performance or other aspects. The top or bottom of the picture on the screen is cut Adjust the position of the picture on the screen. off when I use the zoom function. Areas at the top and bottom of the screen where the image is missing appear when I use the zoom function. When using a video software program (such as a cinema size program) with a screen wider than one in the 16:9 mode, blank areas separate from the images are formed at the top and bottom of the screen. I can hear sounds coming from inside the unit. When the power is turned on, a sound of the display panel being driven may be heard: This is normal and not indicative of malfunctioning. This Plasma Display uses special image processing. Hence a slight time lag may occur between image and audio, depending on the type of input signal. However, this is not a malfunction. 37