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This is the original manufacturers service manual, with detailed info on the circit boards, explosion drawings of all parts in assembly order, and tuning instructions. The only thing missing is the information on the dimensions of the various drive belts. mail me if you need them. gcrossman_at_aol.com
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Ordered service manuel for a hard to find plasma tv - your company made it easy to find and purchase - I will use you again
Thanks for your help
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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.
SECTION 3 TEST MODE
3-1. OUTLINE
This set has the test mode in which the pick-up can be operational checked and the video signal can be verified.
3-3. VIDEO SIGNAL VERIFICATION
3-3-1. Setting the test mode 1. Switch positions OPEN switch (S801) : OPEN HOLD switch (S804) : OFF AVLS switch (S893) : OFF 2. Short the TEST terminal TAP801(TEST) by soldering it. Remove the solder from the TAP901(V-TEST) and connect the terminal to the TP945 (VDD) with a 47 k� resistor. 3. Supply 4.5V DC from the DC jack (J401). 3-3-2. Releasing the test mode 1. Open the TEST terminal TAP801(TEST). Remove the resistor from the TAP901 (V-TEST) and short the terminal by soldering it. 2. Turn the power OFF. 3-3-3. Operational checks 1. Connect the TP931 to the TP945 (VDD) with a 47 k� resistor (NTSC mode). 2. Press the O RETURN key once. 3. Verify that a 100% white pattern is output from the VIDEO OUT (J901). 4. Press the O RETURN key once (output off). 5. Connect the TP931 to the TP919 (GND) (PAL mode). 6. Press O RETURN key once. 7. Verify that a 100% white pattern is output from the VIDEO OUT (J901). 8. Press the O RETURN key once (output off). 9. Open the TP931.
3-2. PICK-UP OPERATIONAL CHECKS
3-2-1. Setting the test mode 1. Switch positions OPEN switch (S801) : OPEN HOLD switch (S804) : OFF AVLS switch (S893) : OFF 2. Short the TEST terminal TAP801 (TEST) by soldering it. Remove the solder from the TAP901 (V-TEST) and open the terminal. 3. Supply 4.5 V DC from the DC jack (J401). 3-2-2. Releasing the test mode 1. Open the TEST terminal TAP801 (TEST) and short the TAP901 (V-TEST). 2. Turn the power OFF. 3-2-3.Operational checks 1. When a specific key is operated: Contents of the operation. KEY ((LCD DISPLAY)) u x CHG > NEXT Spindle on. Tracking servo off. ((UP 00 03)) All servo off. Mute on. ((10 different displays are repeatedly presented.)) Moves the pick-up to the outside (with the open switch open). Tracking servo off. Mute on. ((Among 10 different displays, the display when the key is pressed is held.)) Moves the pick-up to the inside (with the open . PREV switch open). Tracking servo off. Mute on. ((Among 10 different displays, the display when the key is pressed is held.)) 2. In play mode � Press the u key: KEY Contents of the operation. ((LCD DISPLAY)) Tracking servo on. Mute off. Each time this key is pressed, the display changes as follows: x1 speed t x2 speed t x3 speed t x4 speed t x1 speed (( 01 00 01)) t ((02 00 02)) t ((03 00 03)) t ((04 00 04)) SELECT REPEAT/ ENTER Each time this key is pressed, the display changes as follows: Tracking gain up. Emphasis on. LCD back light on h Tracking gain down. Emphasis off. LCD back light off
1.0 ± 0.2Vp-p H
Fig. 100% white pattern
Adjustment Location: See page 10.
PLAY MODE
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