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.
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!
Text excerpt from page 61 (click to view)
4.
Tracking Balance Measurement 1) 2) 3) Connect the oscilloscope to test points TP-TE and TP-VC. Playback the second track of TCD-782 and press the PAUSE button. Check that the traverse waveforms of the oscilloscope are up and down symmetrically.
OSCILLOSCOPE
OUTPUT
TP -TE TP -VC
5.
Playback Check 1) Playback track numbers 3, 8 and 13 of ATD-001 and check that noise or sound skipping does not occur.
A 0V B
A=B
VOLT / DIV: 100mV TIME / DIV: 1ms
6.
Laser Current Check * Perform this check only when the laser is faulty. 1) Connect a digital multimeter across the resistor R541 (10 ohms). 2) Playback TCD-782 and check the DC voltage value of the 3) 4) digital multimeter. Check the SPEC VALUE specified on the label of pickup. Calculate the laser current (Iop) by diving the DC voltage value across R541 by the resistor value (R541 = 10 ohms). Check that the laser current (Iop) is SPEC VALUE ± 10 %.