Hitachi 32HDL52A, Service Manual

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7.Self Diagnosis Function
If a problem arises while you are using the TV, please read this self diagram function guide carefully before
you ask to have the TV repaired. You may be able to fix it easily by yourself. For example, if the mains plug is
disconnected from the mains outlet, or the TV aerial has problems, you may think there is a problem with the
TV itself.
Important:
z This self diagram function guide only covers problems whose causes are not easy to decide. If you have
a question when you are operating a function, read the page(s) for that function carefully, not this self
diagram function guide.
z If you follow the advice in this self diagram function guide without any success, unplug the mains plug
and ask your TV to be repaired. Do not attempt to repair the TV by yourself or to remove the rear cover
of the TV.
If you cannot turn on the TV:
z Are the AC plug on the power cord from the TV is connected to AC outlet?
z Make sure to set the VCR/TV/DVD switch to the TV position. You cannot turn the TV on when the
VCR/TV/DVD switch is set to the VCR or DVD position.
Poor picture:
z If noise totally blocks out the picture , there may be a problem with the aerial or the aerial cable. Check
the following to try to solve the problem:
- Have the TV and aerial been connected properly?
- Has the aerial cable been damaged?
- Is the aerial pointing in the right direction?
- Is the aerial itself faulty?
z If the TV or aerial suffers interface from other equipment, stripes or noise may appear in the picture.
Move any equipment such as an amplifier, personal computer, or a hair drier, that can cause
interference away from your TV. Or try moving the TV. If the aerial suffers interference from a ratio
tower or high-voltage wire, please contact your local dealer.
z If the TV suffers interference from signals reflecting from mountains or buildings,
double-pictures(ghosting) will occur. Try to change the aerial’s direction or replace it with one with better
directionality.
z Have the COLOR and BRIGHT settings been adjusted properly? Follow the description “PICTURE
ADJUSTMENT” to try to adjust them properly.
z Videotaping teletext is not recommended because it may not record correctly.
z When viewing images from commercially available video software products, or videos from videotapes
which have been recorded improperly, the top of the image may be distorted. This is due to the
condition of the video signal. There is nothing wrong with the TV.