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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.
CONVERGENCE CRT CUT-OFF, BACKGROUND AND SUB-CONTRAST ADJUSTMENT
NO. Adjustment part Adjusting procedure conditions Waveform and others NO. Adjustment part Adjusting procedure conditions Waveform and others 1 CRT CUTOFF 1. Switch TV to VIDEO mode, BLUE BACK OFF, 1 CONVERGENCE 1. Receive the �Crosshatch Pattern� signal. ADJUSTMENT with NO VIDEO signal. CONTROL) 3. Connect the oscilloscope to Red OUT from IC801.(TP851 (14")/TP852 (20"/21")) R Range : 1 V/Div (DC) Sweep : 5 msec/Div
RGB 2. Turn the 6-pole magnet to a proper opening
1 V colours.
3.0Vdc
BGR
14BM2, 14BM2S/G 20BM2, 20BM2S/G 21BM2, 21BM2S/G
B G adjustment.) Static convergence
ADJUSTMENT 2. Using the remote controller, call NORMAL (I C BUS 2. Press R/C to set Picture Normal condition. (To be done mode.2 after the purity
1. Turn the 4-pole magnet to a proper opening
angle in order to superpose the blue and red Fig. 5-1
0 4. Adjust SCREEN VR, so that the tip of signal
angle in order to superpose the green colour reach 3.0 ±0.1 Vdc. Fig. 6 over the blue and red colours. G 2 SUB1. Call �SUB-BRI� in service mode. (Receive B Fig. 5-2 2 screen in the following steps. (I C BUS that line 1, 2 and 3 have the same darkness
B 2 3 and finally line 5 will be the brighter 1, 2 and 3 are in same black level. R
Dynamic convergence BRIGHTNESS Crosshatch pattern with 5 black level windows) 1. Adjust convergence on fringes of the ADJUSTMENT 2. Adjust the �SUB BRIGHT� bus data in order 1 2 3 4 5 wherelse 4 is slightly brighter than line 1, a) Fig. 5-1: Drive the wedge at point �a� and RGB CONTROL) swing the deflection coil upward. than line 4. b) Fig. 5-2: Drive the wedge at points �b� and R
G
Fig. 7 �c� and swing the deflection coil * 12,300°K X : 0.272 c) Fig. 5-3: Drive the �c� wedge deeper and BALANCE nal.
downward. 3 WHITE 1. Receive the �WHITE� pattern with BURST sigRefer to Page ????. Fig. 5-3 2. Press R/C to set Picture NORMAL condition. Y : 0.275 swing the deflection coil rightward. SERVICE
R (-) and TP603 (+). Y : 0.255
2
BGR MODE 3. Connect DC miliammeter between TP602 * 18,000°K X : 0.255 d) Fig. 5-4: Drive the �b� wedge deeper and
2. Fix all wedges on the CRT and apply glass (I C BUS 4. Check Beam current should be around 1,100 µA B & DRI-BS data to have a colour temperature *Note: Above Data can be UP/ magnet unit (purity, 4-pole, 6-pole magnets) * Note . 6. Receive �WHITE� pattern, WITH BURST signal, LOW HIGH Finally received the Red-only and Blue-only Wedge "a"
100° LUMINATE Y signal.
swing the deflection coil leftward. ADJUSTMENT G
tape over them. CONTROL) (20"&21") (14" around 800 µA). (MINOLTA COLOUR ANALYZER Fig. 5-4 of 12,300°K or 7,500°K (white). DOWN by Volume key. and magnet unit lock screw.
3. Apply lacquer to the deflection yoke lock screw, 5. Set it to service mode and adjust the DRI-GS, CA-100)
8
Wedge "c" Note: This adjustment must be done after "b"
and set BRIGHTNESS Y by generator, to ** 14" 10 200 cd/m2 signals to make sure there is no other colours (MINOLTA CA-100) by reducing 20"/21" 10 120 cd/m2 on the screen. About 7. Adjust �CUT-R� & �CUT-G� to get desired colour temperature. Then go back NORMAL mode Lacquer (HIGH BRIGHT**) to check colour temperature. If out 14� back to (1)
Fig. 5-5
4-pole magnet CRT neck
warming up the unit for 30 minutes or longer with a beam current over 700 (20"&21") µA. (For 14", the beam current should be 6-pole magnet over 500 µA) * Adjust DRI-GC/GW, DR-BC/BW as following data, after finishing DRI-BS and DRI-GS data * 12,300°K DRI-GW=�DRI-GS�-7 adjustment. DRI-BW=�DRI-BS�-7 DRI-RW=32 (FIXED), DRI-GW=�DRIGS�-7*, DRI-BW=�DRI-BS�-7* * 18,000°K DRI-GC=�DRI-GS� 20cm
40cm
Purity magnet DRI-GC=�DRI-GS�-7* DRI-RC=27
Lacquer (21") DRI-RC=25, DRI-BC=�DRI-BS�, DATA-5
Fig. 5-6 (14") 4 MAXIMUM 1. Receive the �Monoscope Pattern� signal. BEAM CHECK 2. Press R/C to set Picture NORMAL condition. 3. Connect the DC miliammeter between TP603 4. Beam current must be within 1,100 ±100µA
(+) and TP602 (�). (Full Scale: 3 mA Range) (21") 800 ± 100 µA(14") .
8-1 8-2
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