Model No: CT-21DR9A_21DR9CP_21DR9CP(SKD)_21DR9R_21DR9R(SKD)
Version 1.0
8
10.10 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.
10.11 Ensure the factory mode setting are set. Set-off the factory mode function and last switch off the
TV set.
10.12 All the “NG” sets must send for repairing and recording for reference.
10.13 Check the AV input and output the picture and sound must be OK.
11. Reliability Aging Test:-
1
st
lot of production sets. Sampling 20 sets for aging 7 days continues test with colour signal in.
Normal production sets must be age for 1 day.
12. Mechanical Inspection:-
12.1 Inspect all glue are firmly placed.
12.2 Check all screws are tightened, no missing and loose.
12.3 Check all the connectors are fully located onto the chassis base.
12.4 Check all the safety components are firmly located onto the chassis and no damage.
12.5 The TV internal side should not see any excess metal materials.
12.6 Check all the cable and wire are OK in-used.
12.7 Check the FBT and switching transformers not high mounting. The big capacito are not slanting
and high mounting.
13. High Potential Testing
:-
13.1 Set the mega-meter is set in position.(Insulation tester)
13.2 Set the meter to DC500V.
13.3 Use the meter probe onto the tuner body and the power cord on connector socket.
13.4 Switch on the button and test the insulation performance and the reading at 2/3 position.
13.5 Insulation spec must over 9.0 Mohm. if not reject.
Note: Everyday work check the high pot. Condition as 3100V, 10 mA, 5 sec are OK.
14. Safety Check
:-
14.1 High voltage checking. Use high pot tester and set the tester to 3100V, 10mA and ensure the
AC/DC switch is in AC position. Set the tester to 10mA and timer to 5 sec.
14.2 Checking methods.
- connect the power cord into power socket.
- the high pot tester gun pointed at metal part of TV set body.
- switch on the switch to test the high electric power.
- connect with high voltage within 5 second and remove the tester gun point.
(B) CTV SET ALIGNMENT - FACTORY SERVICE MODE
1. “
Enter” and “Leave” the Factory mode adjustment methods
:
1.1. Enter factory password: (use normal Remote control unit)
1.1.1
Set TV as RF condition and press remote control “PROG” key and follow by “6”, “4”, “8”, “3”
1.1.2
Repeat the same step of “1.1.1.” to enter into “White Balance” adjustment condition
1.1.3
Repeat the same step of “1.1.1.” to enter into “Factory mode” adjustment condition
1.1.4
Repeat the same step of “1.1.1.” to enter into “Factory mode” setting condition
1.1.5
Repeat the same step of “1.1.1” to leave the factory mode function
1.2 Direct Enter:
Use Factory mode Remote control unit, press the “factory” key to enter into “factory mode” function.
Press one more time “factory” key to enter “White balance” adjustment condition, press one more time
to enter the adjustment condition. Press One “factory” key to setting up our requirement spec. Last
press once “factory” key to leave factory mode function.
Use “factory mode” for TV ageing, 2
nd
step is to align the White Balance in good condition. 3
rd
step
adjust the required electrical specification. (The function adjustment are 20 selection) Others function
of adjustment are 39 items, and you can use “P+/P-“ key and “V+/V-“ key for selection and
adjustment.
Содержание CT-21DR9
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