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AV-28WFR1EKS AV-28WFR1EK SERVICE MANUAL COLOUR TELEVISION BASIC CHASSIS AV-28WFR1EKS AV-28WFR1EK The following items for the AV-28WFR1EKS / AV-28WFR1EK models were changed from those of the AV-28WFR1EKS / AV-28WFR1EK models. Therefore, this service manual describes only the items which differ from those of the AV- 28WFR1EKS / AV-28WFR1EK service manual.
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AV-28WFR1EKS AV-28WFR1EK CHANGED ITEMS USING PW BOARD DIFFERENCE TABLE (Page 38) AV-28WFR1EKS AV-28WFR1EKS Model AV-28WFR1EK AV-28WFR1EK PWB ASS’y No.51695 No.51695B MAIN PWB SJK-1906A-U2 SJK-1904A-U2 POWER & DEF. PWB SJK-2508A-U2 SJK-2504A-U2 CRT SOCKET PWB SJK-3503A-U2 SJK-3502A-U2 FRONT CONTOROL SJK-8506A-U2 SJK-8504A-U2 SJK0S905A-U2 AV SEL.
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AV-28WFR1EKS AV-28WFR1EK POWER & DEF. PW BOARD ASS’Y(Page 41~42) SJK-2508A-U2 PW BOARD No. SJK-2504A-U2 PARTS NAME DESCRIPTION ! Symbol No. PARTS No. PARTS No. QRA14CF-3091Y R2403 QRE141J-123 3.09kΩ 1/4W F QRE121J-100Y R2414 QRE121J-3R9Y 10Ω 1/2W J QRL039J-330 R2467 QRG039J-120 OM R 33Ω...
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VICTOR COMPANY OF JAPAN, LIMITED HOME AV NETWORK BUSINESS UNIT 1106 Heta, Iwai-city, Ibaraki-prefecture, 306-0698, Japan 28WFR1EKSA-U #003 Printed in Japan 28WFR1EKA-U #003 VP 0011 DP2050...
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AV-29RF6 SPECIFICATIONS Item CONTENTS Dimensions ( W× × × × H× × × × D ) 732mm × 588mm × 508mm 52kg Mass TV RF System B, G, I, D, K, K1, M PAL, SECAM, NTSC3.58, NTSC4.43 Colour System A2 / NICAM (B/G, I, D/K) system Stereo System Receiving Frequency VHF(L)
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AV-29RF6 SAFETY PRECAUTIONS 1. The design of this product contains special hardware, many 9. Isolation Check circuits and components specially for safety purposes. For (Safety for Electrical Shock Hazard) continued protection, no changes should be made to the original After re-assembling the product, always perform an isolation design unless authorized in writing by the manufacturer.
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AV-29RF6 FEATURES " By preference, users can select the picture size from REGULAR, " Built-in ECO (ECONOMY, ECOLOGY) MODE. ZOOM, 16:9 modes. In accordance with the brightness in a room, the brightness " Because this TV unit corresponds to multiplex broadcast, users and/or contrast of the picture can be adjusted automatically to can enjoy music programs and sporting events with live realism.
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AV-29RF6 FUNCTIONS ① Headphone jack ⑥ TV/VIDEO ⑪ POWER ② Video-4 terminal ⑦ AUTO VNR ⑫ ECO sensor ③ MENU OK ⑧ ECO ⑬ Remote control sensor ④ Channel -/+ (MENUUP/DOWN) ⑨ ON TIMER ⑭ Main POWER SW ⑤ Volume -/+ (MENULEFT/RIGHT) ⑩...
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AV-29RF6 SPECIFIC SERVICE INSTRUCTIONS DISASSEMBLY PROCEDURE REMOVING THE REAR COVER CHECKING THE PW BOARD 1. Disconnect the power plug from wall outlet. To check the PW Board from back side. 1. Pull out the chassis (refer to REMOVING THE CHASSIS). 2.
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AV-29RF6 FRONT CABINET SPEAKER BOX FRONT CONTROL PWB(2/2) POWER DEF PWB CLAW CRT SOCKET PWB CHASSIS BASE FRONT CONTROL PWB(1/2) Fig.1 CLAW MAIN PWB SPEAKER BOX AV SEL. PWB AV TERMINAL BOARD POWER CORD REAR COVER Fig.2 No.51754...
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AV-29RF6 REMOVING THE CRT " Replacement of the CRT should be performed by 2 or more persons. CRT CHANGE TABLE " After removing the cover, chassis etc., 1. Putting the CRT change table on soft cloth, the CRT change table should also be covered with such soft cloth (shown in Fig.3).
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(4) Check and set SYSTEM CONSTANT SET 1-7 : SELECT DISP : EXIT It must not adjust without signal. JVC JK ASIA V** M*******-***** 1) Press the DISPLAY key and the PICTURE MODE key of the REMOTE CONTROL UNIT simultaneously. Fig.1 2) The SERVICE MENU screen of Fig.
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AV-29RF6 INITIAL SETTING VALUES OF SYSTEM CONSTANT SET (TABLE 1) CONTENTS VARIABLE RANGE INITIAL SETTING VALUE MULTI TRIPLE MULTI COLOUR SUPER BASS CENTER SPEAKER TEXT BLUE BACK MUTE VOLUME LIMIT COLOUR AUTO TILT C-TRAP E.M.C N/S WHITE BACK …… 1250 1260 1270 7 LED SPEED...
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AV-29RF6 SERVICE MENU SETING ITEMS (TABLE 3) Setting item Setting value Setting item Setting value 1. IF VCO (CW) 4. DEF 1. V-SHIFT 2. V-SIZE 3. SUBTITLE 4. H-CENT 5. H-SIZE 2. V / C 1. CUT OFF (R, G, B) 6.
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AV-29RF6 REPLACEMENT OF CHIP COMPONENT ! CAUTIONS 1. Avoid heating for more than 3 seconds. 2. Do not rub the electrodes and the resist parts of the pattern. 3. When removing a chip part, melt the solder adequately. 4. Do not reuse a chip part after removing it. ! SOLDERING IRON 1.
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AV-29RF6 SERVICE ADJUSTMENTS BEFORE STARTING SERVICE ADJUSTMENT 1. There are 2 ways of adjusting this TV: One is with the REMOTE CONTROL UNIT and the other is the conventional User mode setting condition method using adjustment parts and components. PICTURE MODE (VSM) STANDARD 2.
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7. AUTO PROGRAM (OFF) SERVICE MENU. And then press the DISPLAY key again, return to the normal screen. 1-7 : SELECT DISP : EXIT ** ** JVC JK ASIA V** [Select the SUB MENU from MAIN MENU] *******-***** ***** ******* *******...
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AV-29RF6 2.V/C, 4.DEF, 5.VSM PRESET and 6.WB PRESET ① 2, 4, 5, 6 Key ・・・・・・・・・・・・・・・・・・ Select one from 2. V/C, 4. DEF, 5. VSM PRESET and 6.WB PRESET. ② MENU UP/DOWN Key ・・・・・・・・・・ Select setting items. ③ MENU LEFT/RIGHT ・・・・・・・・・・・・ Set (adjust) the setting values of the setting items. ④...
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3. AUDIO 4. DEF 5. VSM PRESET 6. WB PRESET 7. AUTO PROGRAM (OFF) 1-7 : SELECT DISP : EXIT JVC JK ASIA V** M*******-***** SUB MENU 1.IF (VCO) **.** **.** MHz : CH ** **.** **.** ** ** VCO (CW)
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AV-29RF6 ADJUSTMENT LOCATIONS FRONT FRONT CONTROL PWB (1/2) FRONT CONTROL PWB (2/2) FRONT POWER F901 CN001 CN013 FRONT FRONT MAIN PWB POWER&DEF PWB CN001 IC701 IC702 MEMORY AV SEL. PWB 1PIN : B1(TP-91) 2PIN : NC 3PIN : NC 4PIN : NC 5PIN : GND TUNER IC301...
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AV-29RF6 ADJUSTMENTS CHECK ITEMS BEFORE ADJUSTMENTS Measuring Item Test point Adjustment part Description instrument 1. Input the black and white signal. Check of B1 Signal TP-91(B1) SCREEN VR generator 2. Select 2. V/C from the SERVICE MENU. Power Supply TP-E [ In HVT ] [X Connector 3.
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AV-29RF6 CHECK OF IF CIRCUIT Measuring Item Test point Adjustment part Description instrument ! Under normal conditions, it is no adjustment required. Adjustment of Remote 1.IF control unit ! It must not adjust without broadcast signal. 1. Select 1.IF from the SERVICE MENU, then displays the VCO adjustment screen.
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AV-29RF6 SETTING OF WHITE BALANCE PRESET Measuring Item Test point Adjustment part Description instrument 1. Select 6.WB PRESET from the SERVICE MENU. Setting of Remote 6.WB PRESET WHITE control unit 1. R DRIVE 2. Select COOL in the user setting MENU. 3.
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AV-29RF6 Measuring Item Test point Adjustment part Description instrument ! Set the PICTURE MODE to STANDARD. Adjustment 1.CUT OFF Signal generator 1. Set the WHITE BALANCE to COOL. of WHITE R, G, B BALANCE 2. Receive a black and white signal (colour off). SCREEN VR Remote (Low Light)
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AV-29RF6 Measuring Item Test point Adjustment part Description instrument Adjustment Remote 3.BRIGHT 1. Receive any broadcast. control unit 2. Select 2.V/C from the SERVICE MENU. SUB BRIGHT 3. Select 3.BRIGHT with the MENU UP/DOWN key. 4. Set the initial setting value with the MENU LEFT/RIGHT key. 5.
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AV-29RF6 Measuring Item Test point Adjustment part Description instrument 5.COLOUR [Adjustment method using measuring instrument] Adjustment Signal TP-47G of SUB generator TP-E(! ! ! ! ) COLOUR Ⅱ Ⅱ Ⅱ Ⅱ [CRT PAL COLOUR 1. Input the PAL full field colour bar signal (with 75% white). Oscilloscope SOCKET 2.
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AV-29RF6 Measuring Item Test point Adjustment part Description instrument [Adjustment method without measuring instrument] Adjustment Remote 6. TINT control unit SUB TINTⅠ Ⅰ Ⅰ Ⅰ 1. receive the NTSC 3.58MHz broadcast. NTSC 3.58 TINT 2. Select 2.V/C from the SERVICE MENU. 3.
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AV-29RF6 Measuring Item Test point Adjustment part Description instrument Adjustment Remote [Method of adjustment without measuring instrument] control unit SECAM 1. Receive the SECAM broadcast. 7. BLACK OFFSET BLACK (R-Y) 2. Select 2. V/C from SERVICE MENU. OFFSET-Ⅰ Ⅰ Ⅰ Ⅰ (B-Y) 3.
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AV-29RF6 DEFLECTION CIRCUIT ADJUSTMENT There are 3 modes of the adjustment ( 1 ) 50Hz mode ( ① REGULAR ② ZOOM ③ 16:9 ), ( 2 ) 60Hz mode ( each aspect mode ) ・・・・・ depending upon the kind of signals ( vertical frequency 50Hz / 60Hz ). The adjustment using the remote control unit is made on the basis of the initial setting values.
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AV-29RF6 Measuring Item Test point Adjustment part Description instrument Adjustment Signal 1. V- SHIFT ● At first, select the ASPECT mode to REGULAR. generator 1. Input the circle pattern signal. V-SHIFT 2. Select 4.DEF from the SERVICE MENU. Remote 3. Select 1.V-SHIFT with the MENU UP/DOWN key. control unit 4.
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AV-29RF6 Measuring Item Test point Adjustment part Description instrument 10. Input the circle pattern signal. Adjustment of Signal 4.H-CENT. generator H.CENTER 11. Select 4.H-CENT and set the initial setting value. 12. Adjust H-CENT to make C=D. Remote 13. Press the OK key and memorize the set value. control unit Adjustment Signal...
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AV-29RF6 Measuring Item Test point Adjustment part Description instrument 21. Input the cross-hatch signal. Adjustment Signal 7.TRAPEZ generator of TRAPEZ 22. Select 7.TRAPEZ with the MENU UP/DOWN key. 23. Set the initial setting value of TRAPEZ with the MENU Remote LEFT/RIGHT key.
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AV-29RF6 Measuring Item Test point Adjustment part Description instrument At first the adjustment in 50Hz-REGULAR mode should be done, then the data for the other aspect mode is corrected in the respective value at the same time. And confirm the deflection adjustment initial setting value in 60Hz( NTSC Video mode ) REGULAR mode.
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AV-29RF6 PURITY, CONVERGENCE ADJUSTMENT PURITY ADJUSTMENT 1. Demagnetize CRT with the demagnetizer. WEDGE DYNAMIC CONVERGENCE ADJUSTMENT 2. Loosen the retainer screw of the deflection yoke. PURITY MAGNET(P) 3. Remove the wedges. 4. Input a green raster signal from the signal generator, and turn the screen to green raster.
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AV-29RF6 STATIC CONVERGENCE ADJUSTMENT (FRONT VIEW) 1. Input a crosshatch signal. 2. Using 4-pole convergence magnets, overlap the red and blue lines in the center of the screen (Fig.1) and turn them to magenta (red/blue). 3. Using 6-pole convergence magnets, overlap the magenta (red/blue) and green lines in the center of the screen and turn Fig.
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AV-29RF6 AV-29RF6 BLOCK DIAGRAM SIF(TU001) AV SEL. PWB IC603 IC 601 IC602 VIDEO-1 VIDEO-2 Y, C IC304 IC101 IC601 VIDEO COMB SW IC607 IC605 AV SW IC606 SPEAKER POWER VOL&TONE FILTER SURROUND VIDEO-3 Y, C VIDEO IC301 SPEAKER DIGI COMB VIDEO-4 CRT SOCKET MONITOR...
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AV-29RF6 PARTS LIST CAUTION " " The parts identified by the symbol are important for the safety. Whenever replacing these parts, be sure to use specified ones to secure the safety . " The parts not indicated in this Parts List and those which are filled with lines in the Parts No. columns will not be supplied. "...