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This is a high quality manual with clear schematic and components layout diagrams ; with service procedure included.
 ;
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.
 ;
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.
 ;
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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7.1.10 DIAGNOSIS OF THE MAIN ASSY
Power ON
A
Does a desired screen appear when selected a tuner? Yes
No
1 Failure in the periphery of CN2301 (Poor contact with the TUJB Assy.) 2 Failure in the periphery of CN2401 (Power supply is not supplied from the POWER SUPPLY Unit.) 3 Failure in the periphery of IC4504, IC4507, IC4511 and IC4512 (Power supply is not supplied to each IC.) 1 Failure in the periphery of CN2301 (Poor contact with the TUJB Assy.) 2 Failure in the periphery of IC3101 (Failure in the periphery of AUDIO ADC for input audio.) 3 Failure in the periphery of IC3201 (Failure in the periphery of AUDIO DAC for output audio.)
No
Does a desired audio output it? Yes
B
No
No
Video recording and playback by HDD
Can the video recording and playback of HDD? Yes Video recording and playback by DVD
C
No
1 Failure in the periphery of CN3801 (Poor contact with the HDD.) 2 To the HDD check mode
No
Does the tray open?
No
1 Failure in the periphery of CN601 (Poor contact with the FRONT Assy.) 2 Failure in the periphery of IC501 (Failure in the periphery of the Driver IC.)
Yes Insert a disc and close the tray, then playback it
Do recognize a disc?
D
No
1 Failure in the periphery of CN101 (Poor contact with the Pickup Assy.) 2 Failure in the periphery of IC101 (Failure in the periphery of the RF IC.) No 3 Failure in the periphery of CN501 (Poor contact with the SPDL.) 4 Failure in the periphery of CN502 (Poor contact with the STEPPER.)
Yes 1 Failure in the periphery of CN2301 (Poor contact with the TUJB Assy.) 2 Failure in the periphery of IC3101 (Failure in the periphery of AUDIO ADC for input audio.) 3 Failure in the periphery of IC3201 (Failure in the periphery of AUDIO DAC for output audio.)
Do play back desired video and audio? Yes DVD recording
No
No
E
Can record desired video and audio?
No
1 Failure in the periphery of CN101 (Poor contact with the Pickup Assy.) 2 Failure in the periphery of IC101 (Failure in the periphery of the RF IC.) No
Yes End Failure in the periphery of IC101 (There is possibility of failure of the EMMA2RFE chip.)
F
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DVR-640H-AV
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