5
h) Check if the color
coordinates
of the cool/warm color temperature at YPbPr (include 480i,
480P, 720P, 1080i), VIDEO(NTSC, PAL) and TV channels are within the scope of the
corresponding value (permit ±8 error).
5 Functional Inspection
5.1 TV function
Connect RF terminal to the central signal source, Enter Search menu
→
auto search, check if there
is station skipping. Check if Fine Tune, the output of earphone and speakers, and the picture are
normal. Check STEREO/SAP/CCD/Parent Control and the picture and sound from AV-OUT.
5.2 ATSC function
Connect AIR terminal to the central signal source, press INFO button and check if the information is
right. Open EPG table and do the same check. Open CCD, V-CHIP and check the display.
5.3 AV/S-Video terminal
Separate input AV1/S/AV2 signal, check if they are normal. Check if the picture and sound from
AV-OUT is normal. It should auto-jump to S terminal when insert S-terminal at the status of AV1.
5.4 VGA terminal
Input VGA signal (VG849 signal generator), separate input the VGA format signal of table 1 and
check if the display and sound are normal. If the image is slight disturb, press auto correction button
on the remote control and check the display.
Table1 PC signal format
No Resolution H-frequency(kHz)
V-frenquency(Hz)
Point clock pulse
frenquency(MHz)
Remark
1 720
×
400
31.47
70.08
25.17
DOS
2 640
×
480
31.50
60.00
25.18
DOS
3 640
×
480
37.90
72.00
31.50
Mac.(SOG)
4 640
×
480
37.50
75.00
31.50
VESA
5 640
×
480
43.30
85.00
36.00
VESA
6 800
×
600
35.16
56.25
36.00
VESA
7 800
×
600 37.90
60.00
40.00
VESA
8 800
×
600 46.90
75.00
49.50
VESA
9 800
×
600 48.08
72.19
50.00
VESA
10 832
×
624 49.00
74.00
57.27
Mac.(H+V)
11 1024
×
768 48.40
60.00
65.00
VESA
12 1024
×
768 56.50
70.00
75.00
VESA
13 1024
×
768 60.00
75.00
78.75
VESA
14 1280
×
1024 64.00
60
108.00
SXGA
15 1280
×
1024 80.00
75
135.00
SXGA
5.5 YPbPr terminal
Input YPbPr signal (VG849 signal generator), separate input the format signal of table 2, check if
the image and sound is normal. If the image is slight disturb, press auto correction button on the
remote control and check the display.
