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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!
1. ELECTRICAL ADJUSTMENTS
1.1 Supply Voltage Adjustment Connect a digital voltmeter to the cathode of diode D950 at the AV mode of the TV and set the screen voltage to the minimum with the screen potentiometer. Adjust the main supply voltage (B+) with P901 potentiometer to the following value (after supply adjustment, readjust Screen and focus voltage). 20� : 119 VDC (for A48ECR43X51) 21� : 114 VDC (for A51EER33X41)
2. SERVICE ADJUSTMENTS
You need the special service remote control to enter and exit the service menu of the TV (you can order it from the manufacturer). All buttons of the Service RC are same with the user remote control, only service menu In / Out is added to it (please see the picture below). Navigation Service In/Out : Enters to / exits from the Service Menu P+ / P: Moves upward / downward inside the menu V+ / V: Changes the values or options
2.1 IF Adjustments 2.1.1 PAL SECAM BG/DK/I � � � � � � � � � � 2.1.2 � � � � � Supply a 471.25 MHz BG system colour bar RF signal to the set by a pattern generator. Find this signal in �setup� menu (C21). In order to deactivate AFT loop, shift value of �fine tuning� from central point by one unit and then shiftback to the central point again (2 small vertical lines are seen in the scale on central point). Store the channel by selecting �Store� and pressing �OK� button. Switch on the Service Menu with the Service RC. Check that value of �VCO C� is �07�. Adjust the coil LC100 until the colour of �:� sign turns red (�<� and �>� are white). Check that value of �VCO F� is �63�. Adjust the coil LC100 until the colour of �:� sign turns red (�<� and �>� are white). Exit from the service menu with the Service RC. SECAM L/L� (if available) Supply a 55.75 MHz, L� system colour bar RF signal to the set by a pattern generator. Find this signal in �setup� menu (C02). In order to deactivate AFT loop, shift value of �fine tuning� from central point by one unit and then shiftback to the central point again (2 small vertical lines are seen in the scale on central point). Store the channel by selecting �Store� and pressing �OK� button. Switch on the Service Menu with the Service RC.
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