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This is a high quality manual with clear schematic and components layout diagrams ; with service procedure included.
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This service manual for the Kenwood KT-990D was reproduced really well ,is very legible and manual is complete.Combined with the low price paid,in the future,I will be checking Owner-Manuals.com any time I need a manual.
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When I purchased this manual I had my doubts regarding the quality as the price was so reasonable as compared to other outlets.
The manual itself is of high standard the print is very clear as are the diagrams. Obviously with the diagrams one has to zoom in otherwise it is to small to be able to read.
Overall I am very pleased with the company who delivered as they said and with the manual they supplied.
I occasionally require a manual and now having registered with this company I shall order from them in the future.
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I was at first dubious about payiong for downloaded manuals but having done so, I was extremely impressed with quality of the two manual I ordered, well worth the small price I paid.
I would highly recommend these to my friends.
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reasonable price for the schematic - the service is perfect, all as expected and pointed by instructions - good scan of the original plans - thank you!
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1.7. 1.8. 1.9. 1.10.
Use remote Control Unit for all types of function check and ensure OK. Check the words display condition. Shock test and make sure the picture and sound are not distorted and shifted. 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. 1.11. Ensure the factory mode setting are set. Set-off the factory mode function and last switch off the TV set. 1.12. All the �NG� sets must send for repairing and recording for reference. 1.13. Check the AV input and output the picture and sound must be OK.
2.
RELIABILITY AGING TEST:2.1. 1st 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.
3.
MECHANICAL INSPECTION:3.1. Inspect all glue are firmly placed. 3.2. Check all screws are tightened, no missing and loose. 3.3. Check all the connectors are fully located onto the chassis base. 3.4. Check all the safety components are firmly located onto the chassis and no damage. 3.5. The TV internal side should not see any excess metal materials. 3.6. Check all the cable and wire are OK in-used. 3.7. Check the FBT and switching transformers not high mounting. The big capacitor are not slanting and high mounting. HIGH POTENTIAL TESTING:4.1. Set the mega-meter is set in position.(Insulation tester) 4.2. Set the meter to DC500V. 4.3. Use the meter probe onto the tuner body and the power cord on connector socket. 4.4. Switch on the button and test the insulation performance and the reading at 2/3 position. 4.5. Insulation spec must over 9.0 Mohm. if not reject. 4.6. Note: Everyday work check the high pot. Condition as 3100V, 10 mA, 5 sec are OK.
4.
5. SAFETY CHECK:5.1 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. Test all naked metal of the TV and ensure no arcing and sparking. 5.2 Checking methods. 5.2.1. connect the power cord into power socket. 5.2.2. the high pot tester gun pointed at metal part of TV set body. 5.2.3. switch on the switch to test the high electric power. 5.2.4. connect with high voltage within 5 second and remove the tester gun point.
Model No: CT-21TF9A_21TF9C_21TF9CP_21TF9CP(IKD)_21TF9CP(SKD)_21TF9CP(M)_21TF9N_21TF9R Version 1.0
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