Sony CRT-01 CRT TV Troubleshooting & Diagnostic Training Manual
Contents
1. 1 Sony Drive CRTO10104 Park Ridge New Jersey 07656 01 05 04 Reproduction in whole or part without written permission is prohibited All rights reserved2. KV24FS13C KV24FS17 KV32FV27 KV36FS13 VP Bus UPIN Bus LPIN No KV36FS17 KV36FV27 adjustment KV38FS16 KV27FS100 KV27FS200 VP1 Bus UPIN Bus LPIN Bus VTRP VK29FS100 KV32FS100 KV32FS200 KV34FS100 KV27FV300 KV29FV300 KV32FV300 KV36FV300 KV36FS100 KV36FS200 KV38FS200 KD34XBR2 KV32HS20 CXA2150D Bus HTPZ KV36HS20 KV36HS20H 1 amp 2 KV32XBR450 KV36XBR450 KV36XXBR450H KV32HS500 KV32HV600 KV34DRC500 KV34XBR800 KV36HS500 KV36XBR800 KV38DRC500 KV40XBR800 KV40DRC800 KV24F S100 KV25FS100 No adjustment O No adjustment No adjustment SLIN 2170D 1 amp 2 Table 8 2 D Geometric Adjustments 29 Chapter 9 Focus Troubleshooting PIXF Overview Figure 9 1 shows two examples of a focused CRT and two of an unfocused CRT The focused examples are on the left and the unfocused ones are on the right CRT Causes FIGURE 9 1 Internal Current leakage Check for a blue glow in the CRT neck assy If present it indicates a current leak within the CRT gun See figure 9 2 If a blue glow is not present initially allow the unit to warm up for about 6 hours then recheck Current leakage can develop with time FIGURE 9 2 30 9 Focus Troubleshooting PIXF External Current leakage Leakage between the CRI pins on the socket base due to dirt or insufficient RTV material y e Remove the C board clean the CRT base and AS u RTv MUST BE the CRT socket and reapp
3. KV36HS20 balance balance balance KV36HS20H KV36XBR450 KV36XBR450H KV34XBR800 4 pole 4 6 pole 4 pole 8 TLV 4 pole amp TLV KV34DRC500 KV32HS500 balance balance balance KV32HV600 KV36HS500 KV35XBR800 KV38DRC500 KV40XBR800 KV42DRC800 Table 7 1H Convergence Adjustments Note 1 CRT Beam Landing adjustment tool 9 948 310 60 works effectively for Landing adjustment Note 2 Landing adjustment and inspection direction Adjustment Direction Face unit in an east or west direction this creates a stronger geo magnetic effect on the CRT Check Unit Direction Set should turn to North and South then degauss and check landing A minimum check of three directions is needed east or west and north and south 24 Chapter 8 Geometric Distortion PIXD PIXW Overview In simple terms geometric distortion causes straight lines appear angled crooked bent too short or too long The most common causes geometric distortion are slight drifts caused by aging fine circuit adjustment drift and customer dissatisfaction with acceptable limits 1 In both instances fine adjustments to the geometric control circuits are the first steps to take to satisfy the customer 2 Readjust the DY tilt slightly 3 Replace the deflection yoke if step 1 does not yield satisfactory results It usually has the same effect as replacing the CRT 4 Replace the CRT if steps 1 2 and 3 do not yield satisfactory results But note geometric
4. Picture noisy Out of focus Poor color Wrong color PIXD PIXF PIXW FIGURE 2 2 ANALYSIS FLOW CONTINUED NO Is there a flaw on outside surface of inside of the screen CHECK Spots scatches Color spots Shadows lines etc Refer to information sheet EIA Code CRT blemish Physical damage APPR DAMG CTRO1 2 2 12 3 03 Chapter 3 CRT Related Symptoms Spots black white burn dust color mixing shadows line kinks Cause Flaw on or behind phosphor affecting the overall appearance of the picture EIA Code APPR EIA Description Appearance defect CTV Description Visual defect Arcing popping noise from the CRT gun raster noise intermittent focus intermittent brightness changes Cause Current leak stray electrons Particles in the electron gun cause intermittent current leakage between elements EIA Code ARCS PIXI PIXJ EIA Description Arcing Intermittent picture Jittery unstable picture CTV Description Arcing Short No picture sound is present heater filaments are ON Cause Cathode emission short low vacuum The cathode emission may be weak grids may be shorted may be intermittent or consistent EIA Code NPIX EIA Description No picture CTV Description White balance short No color in picture Cause CRT short at cathode or grids causing a defect in B board video drive EIA Code PIXC EIA Description No color in picture CTV Descrip
5. Adjustment Steps FIGURE 10 1 CONVERGENCE STEPS Note To minimize interactions with each other set all VRs and magnets to zero or null positions before starting Center Adjustments V Stat Adjustment With H Stat separated adjust the 4 pole ring magnet to align the blue and red spots in the horizontal axis This is done by either spreading apart or bringing together the two handles on the magnet 32 10 Convergence Supplemental Information Rotate both 6 pole magnet rings together as a unit to align the red and blue together to the green in the horizontal akis FIGURES 10 3 A B H Stat Adjustment Separate or bring together the 6 pole magnet rings so that the blue and red spots are equal distance from the green E 5 ud Kash hi FIGURES 10 4 A B Adjust the H Stat control on the C board to bring the red and blue spots in line with the green FIGURES 10 5 A amp B 33 10 Convergence Supplemental Information Y Axis Adjustments These adjustments converge the center part of the screen vertically from top to bottom See Figure 10 6 bi FIGURE 10 6 Y AXIS TLV Reactor Adjustment Separate the dots again with the TLV reactor control on the DY and adjust the LTV reactor to converge the red and blue dots at the top and the bottom of the screen See Figure 10 7a The location of the reactors is shown in Figure 10 7b TOP CENTER EE BOTTO
6. Retrace Lines ARCS PIXC PIXI PIXJ PIXL PIXL PIXI PIXJ PICC or ARCS CRT Causes Four causes may produce above symptoms and all are related to current flow between electron gun elements 1 Internal Arcing Popping sound Cause Current discharge from a high voltage potential to ground or to low voltage potential Arcing can occur when foreign particles as small as 2mm are present in the CRT gun Factors for arcing are voltage potential differences between the electrodes distances between the electrodes shape size and location of the particles Space between Electrode 2mm Dust burr 2mm in height FIGURE 6 1 CTRO1 6 12 5 03 W od Pin shaped dust Round shaped dust FIGURE 6 2 CTRO1 6 2 12 5 03 Occasionally arcing occurs between the cathodes causing emission problems Stray Electrons Cause Voltage V As a result of cold emissions electrons flow from a lower electric potential of the gun to a higher potential of the gun in areas that they would not otherwise normally flow Cold Emission occurs when an electron flow is induced by a strong electric field between two Eleotrio Field F Field F parallel electrodes 6 3 11 3 External Leaks Cause These leaks occur between the CRT pins on the CRT socket and are caused by external contamination on the socket between the pins or by insufficient RTV Solution Clean socket and apply RTV compound in areas shown 4 Shorts Caus
7. Service intervention Solutions 1 In all instances fine adjustments to the CRT and circuits are the first steps to take to satisfy the customer When appropriate steps should include external degaussing circuit adjustments DY ring adjustments CRT magnet replacements and permalloy strip replacements 2 Replace the deflection yoke if step 1 does not yield satisfactory results It usually has the same effect as replacing the CRT 3 Replace the CRT if steps 1 and 2 do not yield satisfactory results Consult with your Sony Technical representative before replacing a CRT if the unit is within acceptable limits and the customer is still dissatisfied CRT Aperture Grill An aperture grill that has shifted off its frame causes the symptom shown in Figure 7 3 The unit being dropped usually causes this Check for other physical damage to unit or packaging to confirm Replace the CRT Non CRT Caused Beam Landing Purity M L The beam landing discolorations are usually caused by either a magnetized CRT aperture grill or by external magnetic forces near the CRT that affects the CRT beam The most common external items are Set Stand If the set is on an iron or steel stand take it off the stand Discoloration will usually occur on the bottom of the screen See Figure 7 4 e f M L disappears inform customer of the need to change stand li home service add B L magnet FIGURE 7 4 e f still M L still exists take off existing landing
8. Symptom Cause Mislanding purity shift No picture no sound HV will not turn ON Cause Vacuum leak broken neck frit leak open filament heaters Main fuse may be blown EIA Code PIXX DEAD EIA Description No picture no sound CTV Description Broken CRT open heaters Chapter 4 DEAD Unit Troubleshooting DEAD or CRT Causes No Heaters Turn the power ON and visually check the heaters FIGURE 4 2 Broken CRT Look for damage to the neck of body of the CRT FIGURE 4 3 BROKEN CRT 7 Table 4 1 DEAD Unit DEAD PIXX Possible causes other than the CRT Symptom CHECK ITEMS COUNTER MEASURE No Picture No Power cord plugged in Plug in Turn power on Power Power on Change fuse Anode cap position Connect anode cap securely if off Check G2 level If too high 2 flash OCP lower H out may be defective If too low 5 flash AKB will occur Adjust for correct level Check B voltage Check for short circuit to GND AE 5A may be low H out 2 flash OCP Power IC problem The fuse may be broken replace fuse Check FBT soldering Re solder bad connection connection Check for crack board near Replace board FBT Check M board connection Secure M board insert correctly Check service bulletin Implement fix as per bulletin information Check DY connection Check if DY connector is inserted into the board correctly Chapter 5 No Picture or Dark Picture Troubleshooting NPIX or
9. 1 Causes other than the CRT PROBLEM CHECK ITEMS COUNTER MEASURE Arcing Open ground connections HV leaks around anode cap Clean anode area Apply sealer if required Arcing leakage at socket pins Apply RTV G4 and IBR pins No color in Check video drive circuit Repair IC picture Intermittent or Check connections on the boards Reconnect loose connections jittery picture Check for cracked circuit boards May be intermittent contact Replace board Check for cold soldering Resolder the bad connection Raster only no Check G 2 drive circuit Overdriving will produce retrace picture Replace the defective part Retrace lines readjust Check Video drive circuit Repair IC 13 Chapter 7 Convergence Beam Landing Troubleshooting PIXD PIXW Overview Incorrect colors can be caused either by 1 incorrect beam landing purity that is one or more beams do land on their respective color phosphor stripe or by 2 incorrect convergence that is the R G B beams are not superimposed over each other Identifying Convergence Beam Landing Problems Beam Landing Poor beam landing is visible as a discoloration whenever there is a raster on the screen In can be of any size and in any location on the screen An example is shown in figure 7 1 Convergence The three beams produced by the CRT electron gun must be n superimposed and converge on the same spot on the CRT face FIGURE 7 1
10. 1FV300 KV24FV300 KV25FV300 KV20S90 KV21SE43C DEF Bus Bus Bus Bus VPOS VSIZ HPOS HSIZ KV24FS100 KV25FS100 DEF Bus Bus Bus Bus VPOS VSIZ HPOS HSIZ KV25FS12 KV25FS12C ma Bus Bus Bus uM VSIZ HPOS HSIZ KV27FS12 KV27FS17 KV27FV17 DEF Bus Bus Bus Bus KV29FS13 KV29FV17 VPOS VSIZ HPOS HSIZ KV29FS13C KV29FV17C KV32FS13 KV32FS17 KV24FS13C KV24FS17 KV32FV27 KV36FS13 KV36FS17 VP Bus Bus Bus Bus KV36FV27 KV38FS16 VPOS VSIZ HPOS HSIZ KV27FS100 KV27FS200 VP1 Bus Bus Bus Bus VK29FS100 KV32FS100 VPOS VSIZ HPOS HSIZ KV32F S200 KV34FS100 KV27FV300 KV29FV300 KV32FV300 KV36FV300 KV36FS100 KV36FS200 KV38FS200 KD34XBR2 KV32HS20 CXA2150D Bus Bus Bus Bus KV36HS20 KV36HS20H 1 amp 2 VPOS VSIZ HPOS HSIZ KV32XBR450 KV36XBR450 KV36XXBR450H KV32HS500 2170D 1 8 KV32HV600 KV34DRC500 2 KV34XBR800 KV36HS500 KV36XBR800 KV38DRC500 KV40XBR800 KV40DRC800 Table 8 2 A Geometric Adjustments 26 MODEL KV13FS100 KV13FS110 KV14FV300 KV20FS100 KV20FV300 KV21FM100 KV21FS100 KV21FV300 KV24FV300 KV25FV300 KV20S90 KV21SE43C KV24FS100 KV25FS100 KV25FS12 KV25FS12C KV27FS12 KV27FS17 KV27FV17 KV29FS13 KV29FV17 KV29FS13C KV29FV17C KV32FS13 KV32FS17 KV24FS13C KV24FS17 KV32FV27 KV36FS13 KV36FS17 KV36FV27 KV38FS16 KV27FS100 KV27FS200 VK29FS100 KV32FS100 KV32F S200 KV34FS100 KV27FV300 KV29FV300 KV32FV300 KV36FV300 KV36FS100 KV36FS200
11. 50 KV36HS20 BUS RSAP KV36HS20H KV36XBR450 LSAP KV36XBR450H KV34XBR800 KV34DRC500 TLH PLATE 8 TLV VR DY amp XCV CORE KV32HS500 KV32HV600 BUS RSAP KV36HS500 KV35XBR800 LSAP KV38DRC500 KV40XBR800 KV42DRC800 Table 7 1C Convergence Adjustments 19 a n KV 21SE43C No Mn 6 pole 8 4 pole 14 EL balance balance KV13FS100 KV13FS110 6 pole amp 4 pole XCV CORE amp 4 pole KV14FV300 KV20FS100 balance balance KV20FV300 KV21FM100 KV21FS100 KV21FV300 KV24FV300 KV25FV300 KV24FS100 KV25FS100 KV25FS12 KV25FS12C DY amp XCV 6 pole amp 4 pole XCV CORE amp 4 pole KV27FS100 KV27F S138 CORE balance balance KV27FS17 KV27FS200 KV27FV17 KV27FV300 KV29FV300 KV32FS13 KV32FS17 KV29FV17 KV29FV17C KV34FS13C KV34FS17 KV32FS100 KV32FS200 KV32FV300 KV34FS100 KV36FS100 KV36FS200 KV36FV300 KV38FS200 KV32FV27 KV36FS13 DY amp XCV 6 pole amp 4 pole XCV CORE amp 4 pole KV36FS17 KV36FV27 CORE balance balance KV38FS17 KV34XBR2 KV32HS20 DY amp XCV 6 pole amp 4 pole XCV CORE amp 4 pole KV32XBR450 KV36HS20 CORE balance balance KV36HS20H KV36XBR450 KV36XBR450H KV34XBR800 DY amp XCV 6 pole amp 4 pole XCV CORE amp 4 pole KV34DRC500 KV32HS500 CORE balance balance KV32HV600 KV36HS500 KV35XBR800 KV38DRC500 KV40XBR800 KV42DRC800 Table 7 1D Convergence Adjustments 20 YCH cen KV29S90 KV 21SE43C_ DYtit DYtit No
12. A poorly converged unit will have discolorations at either horizontal or vertical areas of the picture It will not occur in solid parts of the picture An example of poor horizontal and vertical convergence is shown in Figure 7 2 enm i mm M il AT WM ILL AAA ll UUJ KUKUMI LIMI FIGURE 7 2 CTRO1 7 2 12 5 03 CRT Caused H static Drift The most common cause of color convergence problems attributable to the CRT is h static drift caused by a change of the IBR resistor value This occurs after a unit has been placed in service Stray current inside the electron gun or arcing can change the IBR resistor value If this occurred H static in the center of the CRT will still be adjustable The drift may stabilize after a period and further adjustment or CRT replacement may not be necessary 14 7 Convergence Beam Landing Troubleshooting PIXD PLXW Aging Slight convergence drifts due to aging if the CRT may cause slight convergence drifts The drift may be small and within tolerances or may be large Magnetization External environmental magnetization can magnetize the CRT over time so and create a purity problem Customer Dissatisfaction The unit may be within acceptable limits but the customer may not be satisfied This issue is more subjective than an actual problem and may require customer counseling circuit touchups or Sony Customer
13. FS100 KV21FV300 KV24FV300 KV25FV300 KV24F S100 KV25F S100 KV25F 912 KV25FS12C KV27FS100 KV27FS13 KV27F S17 KV27FS200 KV27FV17 KV27FV300 KV29FV300 KV32FS13 KV32FS17 KV29FV17 KV29FV17C KV34FS13C KV34FS17 KV32FS100 KV32FS200 KV32FV300 KV34FS100 KV36FS100 KV36FS200 KV36FV300 KV38FS200 KV32FV27 KV36FS13 KV36FS17 H STAT KV36FV27 KV38FS17 knob RV 1761 KV34XBR2 KV32HS20 KV32XBR450 H STAT KV36HS20 KV36HS20H KV36XBR450 knob KV36XBR450H RV9001 KV34XBR800 KV34DRC500 KV32HS500 KV32HV600 KV36HS500 KV35XBR800 KV38DRC500 KV40XBR800 KV42DRC800 H STAT knob RV9001 V ETZN 4 pole VSTAT MAGNET 4 pole VSTAT MAGNET 4 pole VSTAT MAGNET 4 pole VSTAT MAGNET 4 pole VSTAT MAGNET 4 pole VSTAT MAGNET Table 7 1A Convergence Adjustments 17 HAMP APH APH 6 pole BMC MAGNET amp NECK ASSY 6 pole BMC MAGNET amp NECK ASSY 6 pole BMC MAGNET amp NECK ASSY 6 pole BMC MAGNET amp NECK ASSY 6 pole BMC MAGNET NECK ASSY amp BUS RSAP LSAP 6 pole BMC MAGNET NECK ASSY amp BUS RSAP LSAP 29990 KV 21SE43C 6 pole MAGNET KV13FS100 KV13FS110 KV14FV300 KV20FS100 KV20FV300 KV21FM100 KV21FS100 KV21FV300 KV24FV300 KV25FV300 KV24FS100 KV25FS100 KV25F 912 KV25FS12C KV27FS100 KV27FS13 KV27F S17 KV27FS200 KV27FV17 KV27FV300 KV29FV300 KV32FS13 KV32FS17 KV29FV17 KV29FV17C KV34FS13C KV34FS17 KV32FS100 KV32FS200 KV32F
14. FS200 KV27FV17 KV27FV300 KV29FV300 KV32FS13 KV32FS17 KV29FV17 KV29FV17C KV34FS13C KV34FS17 KV32FS100 KV32FS200 KV32FV300 KV34FS100 KV36FS100 KV36FS200 KV36FV300 KV38FS200 KV32FV27 KV36FS13 H Static H Static 4 pole balance KV36FS17 KV36FV27 balance balance KV38FS17 KV34XBR2 KV32HS20 Bus YBWU Bus RUBW 4 pole balance KV32XBR450 KV36HS20 YBWL RLBW LUBW KV36HS20H KV36XBR450 LLBW KV36XBR450H KV34XBR800 Bus YBWU Bus RUBW 4 pole balance KV34DRC500 KV32HS500 YBWL RUMB RLBW KV32HV600 KV36HS500 LUBW KV35XBR800 LUMB LLBW KV38DRC500 LLMB KV40XBR800 KV42DRC800 Table 7 1F Convergence Adjustments 22 MODEL CHCR C BOW CBV KV29S90 KV 21SE43C 4 pole balance 4 pole amp 6 pole 4 pole amp 6 pole balance balance KV13FS100 KV13FS110 4 pole amp TLV 4 pole amp 6 pole KV14FV300 KV20FS100 balance balance KV20FV300 KV21FM100 KV21FS100 KV21FV300 KV24FV300 KV25FV300 KV24FS100 KV25FS100 KV25FS12 KV25FS12C 4 pole amp TLV 4 pole amp 6 pole KV27FS100 KV27FS13 balance balance KV27FS17 KV27FS200 KV27FV17 KV27FV300 KV29FV300 KV32FS13 KV32FS17 KV29FV17 KV29FV17C KV34FS13C KV34FS17 KV32FS100 KV32F S200 KV32FV300 KV34FS100 KV36FS100 KV36FS200 KV36FV300 KV38FS200 KV32FV27 KV36FS13 4 pole amp TLV 4 pole amp 6 pole KV36FS17 KV36FV27 balance balance KV38FS17 KV3AXBR2 KV32HS20 4 pole amp TLV Bus RUBW K
15. KV38FS200 KD34XBR2 KV32HS20 KV36HS20 KV36HS20H KV32XBR450 KV36XBR450 KV36XXBR450H KV32HS500 KV32HV600 KV34DRC500 KV34XBR800 KV36HS500 KV36XBR800 KV38DRC500 KV40XBR800 KV40DRC800 CENTER V PIN ROTATION ik LIE DEF DY 8 User DY TILT control adjustmen t DEF DY ROTATION DY TITLE No amp Y adjustmen magnet t DEF DY amp User DY amp Y No control magnet adjustmen t DEF DY amp User DY amp Y NO control magnet adjustmen t DEFL DY amp User DY amp Y NO control magnet adjustmen t VP DY Rotation amp DY amp Y NO TILT magnet adjustmen CORRECTION t MENU VP1 DY Rotation amp DY amp Y NO TILT magnet adjustmen CORRECTION MENU CXA2150D 1 amp 2 DY Rotation amp TILT CORRECTION MENU Bus NSCO DY amp Bus VCEN Bus VPIN 2170D 1 amp 2 1 Table 8 2 B Geometric Adjustments 27 c c c c c c o o o o o o V ANGLE Bus VANG V BOW Bus VBOW Bus VANG VBOW VANG VBOW VANG VBOW VANG VBOW c c c o o o Bus VBOW amp Y MAGNET VANG Bus VBOW 8 Bus VANG Y MAGNET VANG LANG LANG BER S iini eroup Aub KEYSTONE CORRECTION V LINEARITY KV13FS100 KV13FS110 Bus Bus TRAP Bus SCOR Bus VLIN PAMP KV20S90 KV21SE43C DEF Bus Bus TRAP Bus SCOR Bus VLIN PAMP CPIN KV24FS100 KV25FS100 Bus TRAP Bus SCOR Bus VLIN PAMP DEF KV25FS12 KV25FS12C DEF Bus Bus TRAP Bus SCOR Bus VLIN PAMP VP V
16. M aj ee FIGURES 10 6 A 8 B LTV REACTOR FUNCTION amp LOCATION APV or VCR Adjustment e 6 Top 9 Ideally all three color dots should line up in the horizontal axis from the top to the bottom of the screen If the screen looks like Figure 10 8 make corrections by rotating both 6 pole magnet rings together as a unit Touch ups with the 4 pole ring magnets may be necessary as the rings interact with each other Priority must be given to the center areas 0606 Center 006 9 Bottom 9 FIGURE 10 8 34 Y Bow Adjustment H STAT Bus mode There are two adjustment methods when the red or blue are bowed but line up on the same side of the green in the vertical plane Top o o oee Figure 10 9 e Use the YBWU and YBWL bus service mode registers on units that have these registers Many units do not have these registers Center e On models without the YBWU and YBWL registers make corrections with the H STAT control Bottom eo e FIGURE 10 9 Y Cross Adjustment e There are three adjustment methods when the red or blue shift their positions from the green as you go from the top towards the bottom of the screen See Figure 10 10 e Use the YBWU and YBWL bus service mode registers on units that have these registers Many units do not have these registers e Tilt the DY up and down e YCH Reactor FIGURE 10 10 X Axis Adjustments These adjustments converge the center horizontal part of the screen from t
17. P1 KV14FV300 KV20FS100 KV20FV300 KV21FM100 KV21FS100 KV21FV300 KV24FV300 KV25FV300 KV27FS12 KV27FS17 DEFL Bus Bus HTRP Bus SCOR Bus VLIN KV27FV17 KV29FS13 PAMP KV29FV17 KV29FS13C KV29FV17C KV32FS13 KV32ES17 KV24FS13C KV24FS17 KV32FV27 KV36FS13 Bus Bus HTRP Bus VSCO Bus VLIN KV36FS17 KV36FV27 PAMP amp DY VR KV38F S16 KV27FS100 KV27FS200 Bus Bus HTRP Bus SCOR Bus VLIN VK29FS100 KV32FS100 PAMP amp DY VR KV32FS200 KV34FS100 KV27FV300 KV29FV300 KV32FV300 KV36FV300 KV36FS100 KV36FS200 KV38FS200 KD34XBR2 KV32HS20 CXA2150D Bus PPHA Bus VSCO Bus VLIN KV36HS20 KV36HS20H 1 2 KV32XBR450 KV36XBR450 170D 1 KV36XXBR450H 5 KV32HS500 KV32HV600 KV34DRC500 KV34XBR800 KV36HS500 KV36XBR800 KV38DRC500 KV40XBR800 KV40D RC800 Table 8 2 C Geometric Adjustments RIEL 2 LIU l UPPER LOWER CORNER TRAP ES PIN KV13FS100 KV13FS110 Bus UPIN Bus LPIN No KV14FV300 KV20FS100 adjustment KV20FV300 KV21FM100 KV21FS100 KV21FV300 KV24FV300 KV25FV300 HOR S CORRECTION No adjustment No adjustment KV20S90 KV21SE43C No Adjustment Adjustment adjustment Bus UPIN Bus LPIN No adjustment KV25FS12 KV25FS12C D Bus UPIN Bus LPIN No No adjustment adjustment KV27FS12 KV27FS17 DEFL Bus UPIN Bus LPIN Bus VTRP No adjustment KV27FV17 KV29FS13 KV29FV17 KV29FS13C KV29FV17C KV32FS13 KV32FS17
18. PIXS Poor Emission Vacuum Adjust the Cathode drive and G 2 level and check for brightness changes Short Hot Short With ain socket off check each CRT pin for a short with another pin Note G 1 and heaters have multiple pins Heat expansion may cause hot shorts For hot shorts turn the set on wait until problem occurs then quickly shut down and check for shorts No Heaters Turn the power ON and visually check the filament heaters for glow HEATER NO GOOD FIGURE 5 1 HEATER OK Table 5 1 No Picture or Dark Picture NPIX or PIKS Possible causes other than the CRT Symptom CHECK ITEMS COUNTER MEASURE No Picture Voltages to each electron gun Trace back to power source for the cause Video drive circuit Replace IC Check if anode cap is on Connect the anode cap securely C board may be loose or off Attach the C board properly Normally a 5 flash AKB error Filament heater Heater voltage Trace cause of missing heater should be about 6 3 Vrms Sound voltage and repair should work G2 voltage 2 flash OCP or 5 flash AKB error If too high lower Hout may be broken 2 flash OCP error If too low 5 flash AKB error will occur Readjust B voltage Repair short circuit to GND AE 5A may be low H out 2 flash OCP Power IC problem Broken blown fuse Repair FBT mounting Repair re solder bad connection Chapter 6 Arcing No Color Intermittent Picture Jitter Raster Only or
19. RE 1 2 TOP VIEW OF ELECTRON GUN Chapter 2 Repair Analysis Flowchart Check for visible damaged parts Yes or loose connections Repair damaged At this point part of loose check for DEAD TV sent to repair connections technician Turn set ON to observe fault or Age unit test set Technician to check the reported fault NG J Go to next page Check for It is likely to have physical caused the damage problem Yes Repair Damage Test TV Age unit O Set returned to Customer Check for Repair using service service bulletin bulletins FIGURE 2 1 ANALYSIS FLOWCHART cTRO 21 120g Will set turn on No CHECK Heaters Board voltages Board connections Fuses Refer to information sheet EIA Code DEAD No Picture No Sound PIXX Yes Is bright Raster visible NO CHECK Heaters Board voltages Board connections Refer to information sheet EIA Code No Picture Dark Raster NPIX PIXS Yes Picture Condition Noisy Intermittently turns off Black amp white only No video Yes CHECK Board voltages Board connections Ground connections Refer to information sheet EIA Code Raster only Intermittent picture Jitter Jumping No color Arcing NO Is picture quality poor Yes CHECK Focus Landing Convergence Geometry Refer to information sheet EIA Code Picture distorted
20. SONY Training Manual gp aja pang Kerri aq rr AES P aaa CRT Troubleshooting Diagnostics and Troubleshooting Course CRT 01 Recommended Troubleshooting amp Repairing Guide V3 0 LED amp LCD TV V2 0 LCD TV Repair Repair Tips ebook LOD TEL Tips amp Case Histories LED Television R e More information on pil T con Board amp Mainboard 1 Secret Repair Tips ME Vol 3 LCD LED MC kw V1 0 Collection of LCD 2 NG l Monitor Repair Case TV Repair Tips Mm Histories by Jestine Yong ELM LCD LED amp 3D TV Plasma amp 3D TV Ste Repair Membership Site eae Repair Membership Site SETON AL GILE Projection TV amp uw Troubleshooting lt DLP LCD Projector Repairing LCD TV Repair Membership Site My Guide Plasma TV Repair Guide T Kas 4 LCD TV Repair Display Fault m secrets Revealed Troubleshooting Basic l a F Sa 10 True Repair Case LCD Monitor Repair Guide sp Histories ol Kek A TA Bale Case Histories of LCD Monitor ce banting amp Repaint qronbleshooting 8 Repairing EUM SMPS Switch Mode eua Testing Electronic Power Supply Repair Components like a Pro Guide E a fi For Beginner Cita Please visit http Icd television repair com newsletter Recommend html Table of Contents 1 Inside the CB ama 1 2 Repair Analysis Flowchart 2 3 CRT Related Symptoms 4 opots black
21. V300 KV34FS100 KV36FS100 KV36FS200 KV36FV300 KV38FS200 KV32FV27 KV36FS13 KV36FS17 6 pole BMC KV36FV27 KV38FS17 MAGNET KV34XBR2 KV32HS20 KV32XBR450 6 pole BMC KV36HS20 KV36HS20H KV36XBR450 MAGNET KV36XBR450H NECK ASSY amp BUS RSAP LSAP 6 pole BMC MAGNET NECK ASSY amp BUS RSAP LSAP Table 7 1B Convergence Adjustments 6 pole BMC MAGNET 6 pole BMC MAGNET KV34XBR800 KV34DRC500 KV32HS500 KV32HV600 KV36HS500 KV35XBR800 KV38DRC500 KV40XBR800 KV42DRC800 18 4 pole VSTAT MAGNET VSTAT MAGNET 4 pole VSTAT MAGNET 4 pole VSTAT MAGNET MAGNET MAGNET 6 pole BMC MAGNET BMC MAGNET 6 pole BMC MAGNET 6 pole BMC MAGNET 6 pole BMC MAGNET 6 pole BMC MAGNET MODEL V TILT TLV X CROSS XCV KV29S90 KV 215E43C DY tilt DY tilt No Adjustment KV13FS100 KV13FS110 TLH PLATE TLV VR DY 8 XCV CORE KV14FV300 KV20FS100 KV20FV300 KV21FM100 KV21F S100 KV21FV300 KV24FV300 KV25FV300 KV24ES100 KV25FS100 KV25FS12 KV25FS12C TLH PLATE TLV VR DY amp XCV CORE KV27FS100 KV27FS13 KV27FS17 KV27FS200 KV27FV17 KV27FV300 KV29FV300 KV32FS13 KV32FS17 KV29FV17 KV29FV17C KV34FS13C KV34FS17 KV32FS100 KV32F S200 KV32FV300 KV34F S100 KV36F S100 KV36F S200 KV36FV300 KV38FS200 KV32FV27 KV36FS13 TLH PLATE TLV VR DY 8 XCV CORE KV36FS17 KV36FV27 KV38FS17 KV34XBR2 KV32HS20 TLH PLATE amp TLV VR DY amp XCV CORE KV32XBR4
22. V32XBR450 KV36HS20 balance RLBW LUBW KV36HS20H KV36XBR450 LLBW KV36XBR450H KV34XBR800 4 pole amp TLV Bus RUBW KV34DRC500 KV32HS500 balance RUMB RLBW KV32HV600 KV36HS500 RLMB LUBW KV35XBR800 LUMB LLBW KV38DRC500 LLMB KV40XBR800 KV42DRC800 Table 7 1G Convergence Adjustments 23 4 pole amp 6 pole balance amp TLH amp APH 4 pole amp 6 pole balance amp TLH amp APH 4 pole amp 6 pole balance amp TLH amp APH 4 pole amp 6 pole balance amp TLH amp APH 4 pole amp 6 pole balance amp TLH amp APH amp Bus RUMB RLMB LUMB LLMB CSV CVCR KV29890 KV 21SE43C 4 pole amp 6 pole 4 pole balance 4 pole balance balance KV13FS100 KV13FS110 4 pole amp 6 pole 4 pole amp TLV 4 pole amp TLV KV14FV300 KV20FS100 balance balance balance KV20FV300 KV21FM100 KV21FS100 KV21FV300 KV24FV300 KV25FV300 KV24FS100 KV25FS100 KV25FS12 KV25FS12C 4 pole amp 6 pole 4 pole amp TLV 4 pole amp TLV KV27FS100 KV27FS13 balance balance balance KV27FS17 KV27FS200 KV27FV17 KV27FV300 KV29FV300 KV32F S13 KV32FS17 KV29FV17 KV29FV17C KV34FS13C KV34FS17 KV32FS100 KV32FS200 KV32FV300 KV34FS100 KV36FS100 KV36F S200 KV36FV300 KV38FS200 KV32FV27 KV36FS13 4 pole amp 6 pole 4 pole amp TLV 4 pole amp TLV KV36FS17 KV36FV27 balance balance balance KV38FS17 KV34XBR2 KV32HS20 4 pole 6 pole 4 pole 8 TLV 4 pole amp TLV KV32XBR450
23. adjustment KV13FS100 KV13FS110 DY amp YCH DY amp YCH No adjustment KV14FV300 KV20FS100 reactor reactor KV20FV300 KV21FM100 KV21FS100 KV21FV300 KV24FV300 KV25FV300 KV24FS100 KV25FS100 KV25F S12 KV25FS12C DY amp YCH DY amp YCH No adjustment KV27FS100 KV27F S138 reactor reactor KV27FS17 KV27FS200 KV27FV17 KV27FV300 KV29FV300 KV32FS13 KV32FS17 KV29FV17 KV29FV17C KV34FS13C KV34FS17 KV32FS100 KV32F S200 KV32FV300 KV34FS100 KV36FS100 KV36FS200 KV36FV300 KV38FS200 KV32FV27 KV36FS13 DY amp YCH DY amp YCH No adjustment KV36FS17 KV36FV27 reactor reactor KV38FS17 KV34XBR2 KV32HS20 Bus YBWU Bus RUBW Bus RUBW RLBW KV32XBR450 KV36HS20 YBWL RLBW LUBW LUBW LLBW KV36HS20H KV36XBR450 LLBW KV36XBR450H KV34XBR800 Bus YBWU Bus RUBW Bus RUBW RUMB KV34DRC500 KV32HS500 YBWL RUMB RLBW RLBW LUBW KV32HV600 KV36HS500 RLMB LUBW LUMB LLBW LLMB KV35XBR800 LUMB LLBW KV38DRC500 LLMB KV40XBR800 KV42DRC800 Table 7 1E Convergence Adjustments 21 BU MODEL C BOW CBH X BOW XBV Y BOW YBH KV29S90 KV 21SE43C H Static H Static 4 pole balance balance balance KV13FS100 KV13FS110 H Static H Static 4 pole balance KV14FV300 KV20FS100 balance balance KV20FV300 KV21FM100 KV21FS100 KV21FV300 KV24FV300 KV25FV300 KV24FS100 KV25FS100 KV25FS12 KV25FS12C H Static H Static 4 pole balance KV27FS100 KV27FS13 balance balance KV27FS17 KV27
24. distortion is not likely to be caused by a CRT Adjustments Table 8 1 shows the most common generic geometric distortions and what to adjust to correct the distortion CORNER BEND Take the magnet off then readjust The best position is around DY on the CRT carbon coating edge Check visual L D e L D magnet position is too close to DY If the corner still bends adjust the data register for Corner Pin Check Permalloy Quantity Take off Permally and readjust Check the Convergence again PATTERN KINK Check Bus data Adjust data register for Corner Bend Check if DY is down Pull up DY to improve Y Axis Correction Magnet Adjust DY up and down to improve Touch up Y Axis magnet to share top middle and bottom V TRAPEZOID ET y Data Adjust data register for Trapezoid PTA MON Adjust data register for H Trapezoid Move DY left and right then fix the DY wedge H TRAPEZOID TLV VR on the DY H Trap Adjust the TLV VR a little bit Last option Adjust Manual Picture Rotation Menu Circuit Picture Tilt If it is still tilted readjust DY the tilt Before adjustment the rotation menu should be set to 0 Table 8 1 Geometric Adjustments 25 Fine Geometric adjustments The following four tables show the geometric circuits to adjust by model number MODEL V SIZE so l ela Get CENTER KV13FS100 KV13FS110 Bus Bus Bus Bus KV14FV300 KV20FS100 VPOS VSIZ HPOS HSIZ KV20FV300 KV21FM100 KV21FS100 KV2
25. e A complete short between two grids It may be internal usually caused by physical damage or mishandling or external caused by contamination or shorted wires Collateral Damage Caused by Arcing Semiconductor Damage Arcing can damage semiconductors Surface Burn Spots When stray electrons occur in the neck area areas of the screen can remain illuminated after deflection has ceased and cause CRT burn marks Focus Shift A resistor divider normally supplies G4 voltage When stray current flow occurs the excessive current flow through the resistor can change its value causing focus changes Brightness and White Balance Changes On some units a resistor divider supplies G2 voltage When stray current flows from G2 the excessive current flow through resistor can change its value causing brightness level changes on direct view units and white balance changes on projection units On some units this can also occur from G1 with similar results Horizontal Static Misconvergence HME Stray current from G1 G2 and G4 or from the internal CRT wall may hit the C plate and flow through the IBRs C terminal causing a potential change on this terminal and horizontal static misconvergence IBR Resistance Change Stray electrons flowing through the IBR and ions bombarding the IBR directly can cause a temperature rise in the IBR changing its value This causes the horizontal static convergence to gradually shift with use 12 Table 6
26. e mode HPOS and HSIZ DY Rotation Rotation 4 There are three methods to adjust V Center depending on the chassis One is DY tilt up and down Note This will effect convergence and landing The second method is Y Magnet on the neck assy The third is Bus service mode VCEN DY Tilt Y Magnet VCEN Vertical Center E 5 Most models do have have an adjustment for V PIN The models which do are located in the Bus service mode VPIN VPIN Vertical Pin Cushion HE 6 Adjust V Bow by Bus service mode VBOW In the event that the center is straight but the sides are bowed then use LBOW for adjustment VBOW or LBOW Vertical Bow 7 Adjust Pin Amp by Bus service mode PAMP PAMP Pin Amplitude CA FL 8 Adjust Pin Phase by Bus service mode PPHA PPHA Pin Phase rH HO 9 VANG or LANG AFC Angle Linear Angle LI L IAL HTPZ H Trapezoid CJ Ho 10 11 Adjust vertical S Correction and V Linearity so that the height of the squares is the same at the top center and bottom of the screen using the Bus service mode VSCO and VLIN VSCO S CORRECTION LEE VLIN V LINEARITY E 12 Adjust Upper Corner Pin and Lower Corner Pin using the Bus service mode UCP and LCP UPC Upper Corner Pin DAMI LCP Lower Corner Pin LAH SONY is a trademarks of Sony Electronics SONY 2004 Sony Electronics Inc EMCS A Service Company
27. ed by Arcing 12 7 Convergence Beam Landing Troubleshooting PIXD PIXW 14 el m A SAS 14 Identifying Convergence Beam Landing PODIEN S na 14 CR CAUSE RTT 14 Non CRT Caused naaa 15 Fine Convergence Adjustments 17 8 Geometric Distortion PIXD PIXW 25 OV CIWIGW a ke Takeshi 25 AOJUSIMONIS ik lk hen e nena Duo makakaasa 25 Fine Geometric Adjustments 25 9 Focus Troubleshooting PIXF 30 psc a 30 Uo aaa naka bin n ad aa bwote naa ban 30 Non CRT Causes stitit taber 31 10 Convergence Supplemental 32 VOCS e 92 Center Adjustments gana a 32 H Stat Adjustment a 33 Y Axis Adjustments 94 A AXISJAGIBSUTIGIIS az 35 Corner Adjustments eano 37 Appendix Geometry Chapter 1 Inside the CRT E SOCKET BASE d STEM ELECTRON GUN APERTURE GRILL PHOSPHOR amp CARBON STRIPES 7 a imis a TA taa anala Om I I kg sanan LL i aaa cqqq4 FIGURE 1 1 EXPLODED VIEW CTRO1 1 1 12 5 03 RI IBR En A NNN pamang RED CATHODE ANNA GREEN CATHODE BLUE CATHODE G2 Gl CRT01 1 2 12 5 03 FIGU
28. he left to the right of the screen See Figure 10 11 FIGURE 10 11 Y AXIS 35 10 Convergence Supplemental Information APH adjustment There are three adjustment methods when the red and Left Center green misconverge but are on the same side of the green gt lt at both sides of the screen See Figure 10 12 eoo Use the RSAP and LSAP bus service mode OO registers on units that have these registers FIGURE 10 12 e Use the 6 pole magnets e Move the neck assembly slightly forward or back TLH adjustment There are two adjustment methods in cases where the red and green misconverge in opposite directions on both sides of the screen TLH plate on the side of the DY slide TLH plate in or out to make changes Inserting the TLH plate in an opposite side will make it move the red and blue in an opposite direction e Some models have bus service mode registers RSAP and LSAP Left Center Right FIGURES 10 13A amp B TLH PLATE FUNCTION amp LOCATION XCV Adjustment Left Center Right For models with reactor controls turn the control wheel to correct convergence keystone Figure 10 7b shows the XCV reactor location In convergence keystone the red and blue dots cross vertical positions from side to side e e See Figure 10 14 FIGURE 10 14 36 10 Convergence Supplemental Information XBV Adjustment Convergence bowing can only be corrected with the Left Center Right with the 4 pole ri
29. ly RTV material to 1 EE APPLIED IN AREA the area shown in Figure 9 3 mc ZZ OUTLINED BY THE WHITE DOTS Focus pin Non CRT Causes FIGURE 9 3 Focus control The focus control on FBT affects the entire screen e Adjust for best center focus with the focus control of the FBT then correct the side focus with the focus phase control next paragraph Focus Phase Control The focus phase control data bus has a greater effect on the sides of the screen than on the center e Adjust for best focus on both sides of the screen with the focus phase control then compensate at the center of the screen with the focus control previous paragraph G2 and RGB Drive Levels Excessive G2 drive levels will cause red beam flare at peak saturation which appears as poor focus G4 Level Poor focus can be caused by an incorrect G4 voltage level G4 voltage is normally supplied by a resistor divider and this divider may change in value either spontaneously or due to overheating caused by stray current flow inside the CRT FIGURE 9 4 Set up Levels data bus Incorrect level setups can cause peak overdrive levels and blooming which can give the appearance of an out of focus CRT ODO DOD ODU 31 Chapter 10 Convergence Supplemental Information Process A three step process is used to adjust convergence 1 Center adjustments 2 Xand Y axis adjustments 3 Corner adjustments The locations of these steps are shown in Figure 10 1
30. magnets on the effected corner and add new magnets to improve landing Check landing see Note 2 Set Location Check If set is on the floor or near building beams posts Move set to different location and recheck e f M L disappears inform customer to change location of set li home service add magnet FIGURE 7 3 15 7 Convergence Beam Landing Troubleshooting PIXD PLXW e f M L still exists take off existing landing magnets on the effected corner Add new magnets to improve landing DY Adjustment Adjust 2 pole purity ring magnets on DY slightly DY Position Check for loose DY especially If M L is extreme and concentrated on FIGURE 7 6 the right left sides rather than at corners See Figure 7 6 If DY is loose slide DY forward or backward to improve landing and tighten see Note 2 Degauss Circuit See Figures 7 7 and 7 8 Switch unit off for 15 minutes minimum Turn on again and check if degauss is working by sound and vibration If not working repair FIGURE 7 7 degauss circuit Check connector Weak L D Magnets These can occur in any screen edge or corner See Figure 7 8 Remove L D magnets and replace with new one on the effected corner Readjust FIGURE 7 8 16 Fine Convergence Adjustments The following tables show the fine convergence adjustments by model number H p aaa n KV 21SE43C H STAT knob RV 701 KV13FS100 KV13FS110 KV14FV300 KV20FS100 KV20FV300 KV21FM100 KV21
31. ng magnets In convergence bowing the red and blue dots vary in their vertical position with e respect to each other when scanned across the screen E a ii but are always on the same side of each other See 4 e 8 Figure 10 15 e e FIGURE 10 15 Corner Adjustments Identify the corner with the convergence problem and insert permalloy strips behind the DY in the area corresponding to the convergence problem e Vary the position and depth of the strip until the mis convergence is minimized e Several permalloy strips may be required in the same location LI i i NL Wi re AN P 1 1 i 4 4 a NA i di 4 a 1 a i 1 a i i L peck kiui Ivar L sad kaka n kib kiu tji a ad jus Fi Fa au i i ki N k i FIGURES 10 16 amp B CORNER ADJUSTMENT amp PERMALLOY LOCATIONS hi ai i 37 Appendix Geometry Adjustment 1 Adjust V position and V size by using Bus service mode VPOS and VSIZ Bus VPOS Vertical Position jJ Bus VSIZ Vertical Size LIA 2 Adjust H position and H size by using Bus service HPOS and HSIZ Bus HPOS Horizontal Position LAH H Bus HSIZ Horizontal Size Ld HO 3 Adjust Rotation by rotating the DY Note Some models have adjustment in the users menu Be sure to adjust the menu to Zero value prior to the adjustment on the DY and H size by using Bus servic
32. tion Short Poor convergence color distortion Cause CRT gun is not perpendicular to the CRT face physical damage internal IBR resistor is damaged Color distortion may consist of colored shadows in the picture EIA Code PIXD EIA Description Picture distorted noisy CTV Description Convergence Geometric distortion Cause CRT gun is not perpendicular to the CRT face physical damage internal IBR resistor is damaged EIA Code PIXD EIA Description Picture distorted noisy CTV Description Geometric Entire screen is out of focus Cause Leak current between G 3 and G 4 This may be constant or intermittent EIA Code PIXF EIA Description Picture out of focus CTV Description Focus Raster with retrace lines normal or low brightness no video Cause Short between grids typically G1 and G2 G2 drive circuit may become damaged EIA Code PIXL EIA Description Raster is present but no picture CTV Description Short Dark or no picture sound is present limited brightness level adjustment Cause Poor emission due to shorted grids or vacuum leak Sound is present but the picture is weak or cannot be seen EIA Code PIXS EIA Description Dark picture CTV Description White balance Color contamination or incorrect colors typically at the corners Cause Purity beam landing DY ring magnets CRT magnets degauss defective EIA Code PIXW EIA Description Poor or incorrect color CTV Description Landing
33. white burn dust color mixing shadows line kinks esssss 4 Arcing popping noise fro the CRT gun raster noise intermittent focus intermittent brightness 8 65 4 No picture sound is present heater filaments LEO 4 INO COIOF IN PI W NO sanon Da ba De 4 Poor convergence color distortion 5 Geometric distortion aa 5 Entire screen is out of focus D Raster with retrace lines normal or low brightness no video eseeeeeeeneeeeanneo 5 Dark or no picture sound is present limited brightness level adjustment 5 Color contamination or incorrect colors typically AVINE COMGIS kaba 6 No picture no sound HV will not turn ON 6 4 DEAD Unit Troubleshooting DEAD or PDO 7 en AA a 7 OGR se 7 5 Picture or Dark Picture Troubleshooting NPIX or PIXS 9 Poor Emission Vacuum eene 9 Shon Hot SMO sl sokat ari a edu a a unda 9 Ned cic 9 6 Arcing Color Intermittent Picture Jiter Raster Only or Retrace Lines ARCS PIXC PICJ PEE m 11 PIXL PIXI PIXK PICC OR ARCS CRT CAS SS aa ana pi M a E I DU ME 11 Collateral Damage Caus
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