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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.
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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!
XL-30H/30W
� HF error.
Is output (tracking error signal) obtained at the pins 46 (TEI) and 47 (TEZI) of IC802 the CD TEST MODE "STEP 4" is changed to "STEP 5"? Yes
test mode "step 4" test mode "step 5"
No
Is output obtained at the pins 2 and 5 of BI802/CNS802 No
Optical pickup failure.
Yes Check the periphery of IC801. Check the PWB pattern between pin 12. (TEO) of IC801 and pins 46 and 47 of IC802. Is it normal ? Yes Check the PWB pattern between pin 50 (TEO) of IC802 and pin 18 of IC804. Check the periphery of IC804 and BI801/CNS801. If OK. Optical pickup failure. IC801 is faulty. No
TEI TEZI
Is output (HF signal) obtained at the pin 38 (RFI) of IC802 when the CD TEST MODE "STEP 4" is changed to "STEP 5"? Yes
test mode "step 4" test mode "step 5"
No
Is output obtained at the pins 1 and 3, 4 of BI802/CNS802. No Yes Check the periphery of IC801.
Optical pickup failure.
RFI
Check the PWB pattern between pin 19 (RFGO) of IC801 and pins 38 (RFI) of IC802. If OK. IC801 is faulty
Is output (HF signal) obtained at the pins 41 (RFZI) and 42 (RFRP) of IC802 when the CD TEST MODE "STEP 4" is changed to "STEP 5"? Yes
RFZI RFRP test mode "step 4" test mode "step 5"
No
Check the periphery of IC801. Check the PWB pattern between pin17 (RFRP) of IC801 and pins 41 (RFZI) and 42 (RFRP) of IC802. If OK. IC801 is faulty.
Is the following wave output to the pin 55 (DMO) of IC802 when the CD TEST MODE "STEP 4" or "STEP 5"? Yes
DMO test mode "step 4" test mode "step 5"
No
Check the periphery pins 28~32 of IC802. If OK. IC802 failure.
Normal.
� No sound.
No sound from both L and R-ch? No Yes Check the interval between the pins 82 or 85 of IC802 and the pins 1 or 3 IC601.
Is +4.5V applied to pin 83 (DVDD) of IC802? Yes No
Check the PWB pattern between R819 and Q861.
Is signal of pins 82 and 85 of IC802 output? Yes The main PWB is faulty. No
Check the peripheral parts of IC802. If OK, IC802 is faulty.
� 42 �
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