There will be a testing DVD disc (for NTSC system named as 5-1 disc, for PAL system named
as 5-2P disc) as a tool when repair, below will introduce the content of the disc
6). Digital Signal Test (not usable for the time being)
3.2 Test Instructions:
1). Video Signal Test need go through 6 screen pictures to check the output
Note of Step:
Login the picture as below for no. 1--Video Signal Test
Then, 3 pictures will show up on the screen: 1.Color bar, 2.Mono scope and 3.Dot
Pattern.
And test will automatically go on to playback the 3 pictures shown as below:
¾ Test Criteria:
Color bar has sharp, bright and stable color show;
Mono scope or Dot pattern has no tilt or twisted effect;
The RGB picture as below has normally good effect to the naked eyes.
If anything undeterminable, please refer to the following factors to evaluate:
3-2
Video Performance (The test appliance is Tektronix VM 700/s-video VM500/Component):
2). Speaker & Sound Signal Test is to test its output audio fineness and locating
efficiency of the speaker.
Note of Step:
Select no.2 --- Speaker & Sound Signal Test in the login. The test will check the
locating efficiency and audio signal as well as special frequency.
¾ Test Criteria:
The standard audio output is clear without popping and the signal output from Hi-Fi is normal.
3-3
If anything undeterminable, please refer to the following factors to evaluate:
Audio Performance (The test appliance is Audio position SWR-2122U)
DA converter 24 –bit /192KHZ
AD converter 24≦-bit
Signal-Noise (1kHZ) 90dB≧
Dynamic range(1kHZ) 80dB≧
Cannel Separation(1kHZ) 80dB≧
Total Harmonic Distortion(1kHZ) ≦-65dB
3). Music Demo test is to check the video output signal good without noise.
4). Video Demo test is to check the normal function of subtitle, language, angle
and so on.
Login in the main test menu for no.4 Video Demo and press the key of “Navi” on
remote to choose “Subtitle” “Audio” and “Angle” to check the normal function.
Navi button
3-4
5). Karaoke Demo Test:
3.3 Items of the DVD disc in common use when rma
5.3.1 Necessary Repairing tools in need to test the following 3 items:
A. Video output
B. Audio output
C. AV output (film)
5.3.2 Note of step:
STEP1:
A. Insert the DVD VIDEO 5-1 / 5-2P disc and it will auto playback
B.Press the key of “Top Menu” on remote to login the menu
3-5
C.Select the item 1—Video Signal Test and press “Enter” to start the test on any
color difference in Color bar and the standard fineness of the RGB, then press “Top
Menu” back to test menu
STEP2:
A.Select item 2—Speaker & Sound Signal Test and press “Enter” for the item
1--Speaker & Sound Signal Test, then press “Enter” for “2.0CH” and the “1KHZ Audio
Test”, to test the R/L- C’s output is normally good or not. And then press “Top Menu”
back to menu
B.In the menu to choose item 4--Video Demo and press “Enter” to start the test, to
check the normally good video and audio output , then press “Top Menu” back to
test menu.
STEP3:
Take out the test disc and the test is over.
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