Model No: CT-25NI9A
N
Version 1.0
12
Purity Magnet
RB-G RB
Magnet Clamper
Static Magnet
(FIG.1)
(IV) FINAL INSPECTION AND ELECTRICAL FUNCTIONAL CHECK
1. CHECKING THE ELECTRICAL FUNCTION:-
1. Connect the power cord and connect the signal to RF input.
2. Check the power supply whether OK or not. Switch on the TV set and the LED is on.
Switch off the TV screen and should not have CRT spot within 3 sec.
3. Receive the channel 1 for monoscope pattern to check the picture focus and the round
circle should not be distorted. The centre position, and VOS line/size are within spec.
Check the brightness, contrast and colour condition. Check the convergence, picture
must be clear, focus OK and white balance are OK. Also check the complete screen
picture quality. High voltage condition OK and the Screen picture must be OK.
4. Check all the functional keys must be working well.
5. Receive colour pattern signal and the system colour. (PAL/SECAM/NTSC). Check
the power main on/off switch, brightness, volume, colour, contrast and tint. The
picture quality must not have colour noise, unbalance size and distorted condition.
6. Check the sound quality standards, Volume up/down are OK to spec, and sound
output. Ensure the sound output is not distorted and noisy. No interference for
DK/BG/I/M.
7. Use remote Control Unit for all types of function check and ensure OK.
8. Check the words display condition.
9. Shock test and make sure the picture and sound are not distorted and shifted.
10. Use strong and weak signal to check the colour picture condition. After adjust the
signal level to 35-40 dB and the colour should not gone. The picture and sound must
be OK. At 60 dB the picture should not have snow noise.
11. Ensure the factory mode setting are set. Set-off the factory mode function and last
switch off the TV set.
12. All the “NG” sets must send for repairing and recording for reference.
13. Check the AV input and output the picture and sound must be OK.
