PHOTOFACT, Technical Service Data
Contents
1. T E 10ps 2SA1037K 2SA1037K 5 02116 Y BUFFER 1 C2103 Q2101Y AMP 9 1V ov 205 87 TOF gt R2165 1000 TAKEN WITH PIP ON AND 5 YN DISPLAYING COLORBARS 91V 02012 82144 8 82166 10 15287 470 p T TAKEN WITH PIP ON AND BRIGHT Rosdi DISPLAYING COLORBARS LEVEL 3300 Ta 2200 2SA1037K T R2150 62102 L 02115 BRT MUTE 5 R2139 3300 01 Xm 4700 25 3052 q2121 2505052 L5 25 3052 02122 HORIZ DRNE 2144 aV 02120 HORIZ PULSE 1 11 F av A 12106 10 _ 1 9V 47 2200 12105 3 021084 2145 02106 TAKEN WITH PIP ON AND R2504 1755 L171 0027 T 152837 DISPLAYING COLORBARS 1025 02107 152837 4 i 11 9V 2SC3052E Q2119 VERT PULSE R2187 aw 2SC3052E 10K sv DN Q2134 BRT MUTE IW R2186 R2146 02101 R2141 2200 22003 22101 2123 182175182177 001 T 82002 10k 52V 9 1V 25 3052 02133 BLK BUFFER R2136 6 V 4 CL R2135 eL 1000 9 1V G TAKEN WITH PIP ON AND DISPLAYING COLORBARS 24 C2233 10ps 10 R2262 uPC661G IC2206 PIP SCHEMA 1V 1037 02114 B Y OUT 12211 A D CONV ES loss qu a FILTER R2244 R2171 R2519 R2261 1000 021222 TOK 2200 TH4sb 10K as 5 TAKEN WITH PIP ON AND 1 DISPLAYING COLORBARS R2242 x 1000 25 A 10ps uod Ld R2241 1000 25 1037 2SA1037K 17V H3 Q2102Y BUFFER 2 02132. m I 1 EV 2 Focus 135V I 1 1 FILAMENTS F PAGE 2G 4558 2501761 CORR 0550 PIN OUT l gt O 6 8 11 1 6 8 9 10ps 53 53 NC gt MC Meere NC 3 4 5 R564 D517 1000 RGP02 17 53 em 1000 15 0 SOURCE 13 1V SOURCE C542 C547 047 000 SEE BASE 0607 PROTECT PAGE 4G A Page2 SET 2910 E IEMATIC 100v 10ps 2SC3311AR 25 2611 gt 0709 VIDEO 0708 RED OUT 32 100 1 8V 1706 S gt D708 C709 2 0 0709 1 6V 159119 680 2V cael 155119 gt R730 R718 u C713 820pF 150 220 R753 22 L3 9 2V B C721 001 1 410V 10ps TP47B 2SC3311AR 2SC2611 Q702 VIDEO Q701BLUE OUT R729 aa 32 100 2 0V CC 0703 1 6 155119 0710 L 726 820pF R751 200V 22 C720 22uF 80v 2SC3311AR 25 2611 0705 VIDEO 0704 GRN OUT C 32 172V 1703 0705 708 T 1SS119 680 9 2V cw 82005 _ 8717 woo 220 151 3 200 9 2V B 1 sd N 2SA1309AR R755 VS 0713 BUFFER L3_ 3302 C719 Sas 9 2V B 551 0 25 2551 0 ix 4710 SW 1 Se 0712 54 2 10K sv PN8 iok 188V N SV R777 R727 56 0713 100K C718 A 199 215583 T R746 R745 3 L3 47K 1000 1W 9 2V B 15 15 200V 200V FOR TERMINAL GUIDES AND NOTES PHOTOFACT STANDARD NOTATION SCHEMATIC 356 PAGE wH 6 Howard W Sams amp Co 1991 PHOT
3. SK10136 SK10136 SK10094 SK10094 SK10093 SK10093 SK3440 SK10093 SK10093 SK3434 SK3434 SK10094 SK10094 SK10093 SK10093 SK10094 SK10094 SK10093 SK10093 SK3747 SK10093 SK10093 SK3434 SK3434 SK3747 SK10093 SK10093 SK3434 SK3434 SK3747 SK10093 SK10093 SK9352 SK10094 SK10094 SK9352 SK10094 SK10094 SK3434 SK10093 SK10093 SK10100 SK10100 SK10097 SK10099 SK10100 SK10100 PARTS L SET 2910 10 continued SEMICONDUCTORS continued Select replacement for best results No Q2117 Q2119 20 Q2121 Q2122 3 Q2125 Q2130 1 Q2133 4 Q2139 Q2200 Type No 25 3052 2SC1623 L6 25 3052 25 1623 6 2SC3052E 25 2713 2SC3052E 2SC1623 L6 25 1037 2SA1162 G 2SC3052E 2SC1623 L6 2SC3052E 2SC1623 L6 25 1037 2SA1162 G 25 3052 25 1623 6 02201 02204 25 1037 02232 02244 5 25 1162 25 3052 2SC1623 L6 2SC3052E 28C1623 L6 Mfr Part No 8 729 100 66 8 729 100 66 8 729 271 32 8 729 100 66 8 729 216 22 8 729 100 66 8 729 100 66 8 729 216 22 8 729 100 66 8 729 216 22 8 729 100 66 8 729 100 66 Lead configuration may vary from original NTE Part No NTE2406 NTE2408 NTE2406 NTE2408 NTE2406 NTE2406 NTE2408 NTE2409 NTE2409 NTE2406 NTE2408 NTE2406 NTE2408 NTE2409 NTE2409 NTE2406 NTE2408 NTE2409 NTE2409 NTE2406 NTE2408 NTE2406 NTE2408 ECG Part No ECG2406 ECG2408 ECG24
4. SET 2910 Page 1 TROUBLESHOOTING continued If the raster has height or width problems Refer to Vertical Horizontal and Power Supply sections of this Troubleshooting guide AUDIO Select an active TV channel and check for an audio waveforms at pins 1 and 2 of MTS Decode IC IC25 1 If there is no audio Check the voltages waveforms and components associated with IC25 1 and pin 10 of IF Module IF201 If audio waveforms are present at pins 1 and 2 of IC251 cheek for audio waveforms at pins 1 and 5 of Audio Amp IC IC405 If audio waveforms are missing Check the voltages waveforms and components associated with Audio Buffer Transistors 4430 Q431 and Buffer Transistors Q202 Q203 If audio waveforms are present at pins 1 and 5 of IC405 Check the voltages waveforms and components associated with IC405 Audio Mute Transistors Q432 Q433 and Mute Transistor Q 103 PIP HORIZONTAL Check for the proper waveforms at pin 9 of A D Conv IC 1 2206 and pin 24 of PIP Control 1 2204 If the waveforms are missing Check the voltages waveforms and components associated with pins 4 thru 10 and 28 of Y C J IC IC2103 pins 8 and 9 of IC2 104 Horizontal Pulse Transistor Q2 120 Horizontal Out Transistor 4212 1 and Horizontal Drive Transistor 42122 If waveforms are present cheek for the proper waveform at pin 60 of IC2204 If waveform at pin 60 of 1 2204 is
5. te 1 10M loess 2SC3311AR 2SC3311AR 0401 BUFFER 0094 Y BUFFER u2 2 ui 2 859 1000 2 2 2A2 1V m 10802 caos i 100 3 00pF 13 9 2V C C 8LIMC HEAVY LINES REDUCE USE OF MULTIPLE LINES Howard W Sams amp Co 1991 FOR GUIDES NOTES SEE PAG PHOTO CIRCUITRACE 5 CIRCUITRACE SEE 37 101 CONTROL PAGE 3G SEE EMITTER Q106 DAT SW PAGE 3H SCHEMATIC 10 10 j 02 22 220 01 22 1 U1 22 2 HAE 01 23 17 ui 23 Y 16 Mad U2 2 U1 2 R906 43V 470K 0904 RO9 1ESB 6904 10uF U2 2 U1 2 7 477 S 47 0905 F SIT RD9 1ESB 2 C906 10uF U2 2 U1 2 M N 14 R1400 C90 D907 33K 16 7 RD9 1ESB L 4 M 02 2 01 2 4 7V 1 0908 RD9 1ESB R IN1 R1403 814 8 AX R IN2 10 4 8v L IN3 NC M C409 INS 12 4 7v 2 E V INS 4 7V V IN 28 4 7V c IN1 00057 7 47 RD9 1ESB 4 R908 C426 100 U2 2 U1 2 22uF Dote 2 RD9 1ESB R470 100K V 3 IV0 0 STANDARD 9 2WC _ VIDEO INPUT 1v 10 1406 100 10 4 3V ROS SESB2 _ 2 VI 2 ERO NN MTS DECODER 2SC3311AR 0430 AUDIO BUFFER R494 54 R489 100 4 0 CC 4700 VX R495 9 2200 560 8 9V 9 2 AUDIO BUF me Q431
6. 106 eb 220pF SEE PIN 7 40 C SW s PAGE 3 OF CP107 10K 1 5 0V 23 01 2235 01 5 14 2 SEE 21 1 444 5 PAGE 38 SEE 22 12 1 444 AV SW Ov PAGE 38 E BASE 03 MUTE GE 3C 22 01 22 gt NC 1 R178 31522 p_34 SEE PIN 14 IC2000 SEE PIN 48 Lens D A CONTR L 10K ae a A 23 U1 22 01 5 NC 12 3 SEE 15 IC2000 ur AME D A CON NTROL 2SC3311AR 0106 DAT Sw R177 4 9V 4 6V 31 1 R176 4 9V SEE PIN 47 106 IC301 e 6 PAGE 2 5 0v EN PAGE 4A L6 5 0V Q101 FM TRAP 75 TUNER TUNERS NQT INCLUDED IN THIS COVERAGE CA o TO TUNER M 2 f TUNER 30v TO TUNER 9 3V TO TUNER 9 2V A _ sy TO TUNER 5 0 4103 103 TO U1 235 A 23 l 13 U1 5W4 NC V 3090 SISSVHO 07 X3 7 3050 225 SISSVHO SCHX342 A M 51300VI SET 2910 Page3 4 SET 2910 02245 V BUFFER Q2123 V BUFFER 2 1 C2130 2129 82628 2 R2183 aaa 1000 9 8 1000 3 5V 1000 27PF 33 PAGE 3C R2526 R2515 s 10 s 000 a PIP SQ TAKEN WITH PIP ON AND R2188 R2184 DISPLAYING COLORBARS 1500 12104 12101 1200 C212 R2173 joo 0022 102 C2136 L C2135 C2 82pF RT 82pF 25 10 WITH PIP DISPLAYING COLORBARS R2510 1 2 3 2155 47 pF
7. 2105 2106 2107 2108 2200 2201 For SAFETY use only equivalent replacement part Item C309 C506 C507 C509 C551 C601 C603 C604 C605 C606 104 GE Gk Gk cb 106 108 CP301 For SAFETY use only equivalent replacement part SET 2910 Function Focus H STAT Position B Level Sub Hue Sub Color Contrast B Y Adj R Y CAPACITORS Rating 39 NPO 50V 5 330 2KV 10 023 2KV 047 400V 5 1 200V 10 47 125V 2096 001 400V 10 47 125V 20 0047 400V 20 0047 400V 20 Cap Network 220 x 20 x 8 Cap Network 220 20 x 8 Cap Network 220 x 2096 x 8 Cap Network 47 x 3 CONTROLS All wattages 1 2 watt or less unless otherwise listed Resistance 22 110M 2200 2200 22L 10K 1000 470K 470K Mfr Part No 1 102 965 00 1 162 115 91 1 137 024 11 1 136 313 51 1 108 433 91 1 136 311 51 1 162 576 51 1 136 311 51 1 161 953 92 1 161 953 92 1 236 479 11 1 236 301 11 1 236 301 11 1 236 730 11 Mfr Part No 1 230 641 11 1 230 619 11 1 238 013 11 1 238 013 11 1 238 017 11 1 238 016 11 1 238 012 11 1 238 023 11 1 238 023 11 Rating 116V 20 3 3 16V 10 1 16V 20 10 16V 2096 NP 10 16V 20 NP 1 50V 2096 NP 150V 2096 NP 150V 2096 NP 4 7 50V 20 NP 2 2 50V 2096 NP ELECTROLYTIC CAPACITORS Mfr Part No 1 131 347 00 1 131 368 00 1 131 347 00 1 126 320 11 1 126 320 11 1 124 499 11 1 124
8. 555 TV NIDEO Ed S56 SURROUND PIP PHOTO CIRCUITRACE 5 CIRCUITRACE 11 FOR TERMINAL GUIDES AND NOTES SEE PAGE 7 A PHOTOFACT STANDARD NOTATION SCHEMATIC wi Howord W amp Co 1991 Page3 SET 2910 E RESET 4 8V CONTROL 4 8V 8 16 V55 VDD X 888201 638 104 SUB CONT 0 5 0 5 0 D R1 R2 R3 R4 R OV 5 0V _5 0V OV OV 9 10 11 12 13 14 R180 R181 R182 R183 1841 R185 2200 2200 2200 2200 2200 2200 5 R6 R7 1 2 R192 R191 2200 2200 4 10 H 11 A 11 1 gt 9 11 11 3 MN1280 S D 03 RESET C626 C128 SEE D602 IN 1 R1105 0 0 10K AC POWER SUPPLY 1 PAGE 4A R1106 ux c 82K 0106 155119 CHEMATIC R144 R179 10K 4700 114 R198 C120 a 10 t1013 6108 L 470 4700 01 3 R190 12 R138 1 9 2V 4 L __ 1000 5 0V 2200 2 ov parr 2 3 part oF 104 103 229 220 47K 1 12 94 NC NC 5 0V R123 m ii in 2200 EMITTER 0604 7 at tice UR BASE PAGE 4F EAS 11 6 0124 220 AUDIO MUTE 19 PAGE 3C _ part or 7 15 106 29 R132 2200 R137 2200 SEE BASE Q102 22 EN PAGE 2A i R131 2200 IC101 R130 M37100M8 115SP 2200 R129 105 HORIZ SYN 2200 PIN Kik R1102 6124 9 IN PAGE 2A gt 8 9V CC R197 R1101 C125 975 R1103 R1103 NC 220pF 10K 33 R157 52
9. Select SHUE and adjust level for proper skin tones Save adjustment to memory S CORRECTION VSCO Enter the Service Adjustment Mode Select VSCO and adjust level to 0 Save adjustment to memory COLOR PURITY Use a degaussing coil to demagnetize the CRT and mounting brack ets Enter the Service Adjustment Mode Adjust ROFF and BOFF levels to MINIMUM Adjust GOFF for a green raster Loosen Deflection Yoke clamp screw and slide it backward to obtain a verti cal green band Adjust purity rings to center the vertical green band Slide the Deflection Yoke forward until a uniform green screen is obtained Check Blue and Red purity by adjusting the ROFF GOFF and BOFF levels Return all controls and adjustments to normal lev els SET 2910 MISCELLANEOUS ADJUSTMENTS continued COLOR TEMPERATURE BCUT GCUT GAMP Adjust G2 Control RV701 so that the retrace lines just disappear Tune crosshatch pattern Enter the Service Adjustment Mode Set Picture to MINIMUM Select SBRT adjustment and adjust level for MINIMUM Select GCUT and BCUT adjustments and adjust lev els for best white balance Save adjustment to memory Set Picture to Maximum Select GAMP and BAMP adjustments and adjust lev els for best white balance Save adjustment to memory Perform Sub Brightness Adjustment CONVERGENCE Adjust the Focus Horizontal Size Vertical Size and Vertical Lin earity Tune in a dot pattern Adjust the Hor
10. T601 T602 Power Transformer T604 Capacitors C608 C609 Electrolytic C610 and D602 If 17 0V is present check for 150V at the lead of D601 If 150V is missing Check the voltages waveforms and components associated with Power Relay RY601 and Relay Driver Transistor Q601 and D601 Note The set may be in shutdown Refer to the High Voltage Shutdown section of this Troubleshooting guide If 150V is present at the lead of D601 check for the proper wa veform at pin 1 of IC65 1 If the waveform is missing Check the voltages waveforms and components associated with IC65 1 Transfer IC 1 652 Converter Transformer T651 and Soft Start Transistor Q612 If the proper waveform is present at pin 1 of IC65 1 Check the voltages waveforms and components associated with T6 5 1 Taken from isolated ground HIGH VOLTAGE SHUTDOWN The high voltage is monitored by Diode 0531 rectifying pulses from the Horizontal Output Transformer T500 Should the high voltage increase the rectified voltage at the cathode of Diode D531 will also increase This will cause the voltage at pin 8 of Protect Module PM501 to increase and turn on Protect Transistors 0607 0608 which causes Relay Drive Transistor 4601 to turn off and remove power from the set To troubleshoot remove Resistor R629 fom the circuit Use a variac for AC power Start at 90VAC and increase as necessary to locate and repair the defec
11. board and connect a variable resistor RV1 about 10K between pin 1 of IC653 and B line 2 Supply 120VAC 2 0VAC with variable transformer Hold down Operation Confirmation 1 Turn the Power switch on and receive a white signal Adjust ABL current to 1650 80uA with Picture and Bright controls 2 Increase B line voltage gradually by adjusting the resistance of RV1 Confirm that the MINIMUM voltage is less than 143 5V when the raster disappears during operation of the hold down circuit Note When the hold down circuit starts operating turn the set off immediately 3 Turn the Power switch on and receive a dot pattern Adjust ABL current to 150 50uA with Picture and Bright controls 4 Increase B line voltage gradually by adjusting RV 1 Confirm that the MINIMUM voltage is less than 146 5V when the raster disappears during operation of hold down circuit Note When the hold down circuit starts operating turn the set off immediately Hold down Readjustment 1 If Hold down Operation Confirmation cannot be satisfied readjustment should be performed by altering the resistance value of R559 R570 CONFIRMATION METHOD HOLD DOWN CONFIRMATION AND READJ USTMENTS The following adjustments should always be performed when replac ing the following components IC653 501 Q608 4607 D531 C545 C627 R570 R591 R627 R628 R675 T500 Preparation Before Confirmation 1 Turn the Power switch on and receive
12. 15 52 GP080 55 A 56 GaP MAGNET 0523 R521 R522 5 R512 100K 180K 47 24 R523 0521 100 0505 W 4 60080 55 7 2 10 8554 R516 PART OF RC4558P PART 2V 5600 IC531 CORR ICI 0562 0563 0593 155119 7M 100K C527 47uF 6 0506 680 106 9 2V A lo ov 7 em RS3FS 5 Raas SET 2910 Page2 TAKEN WITH PIP ON AND DISPLAY COLORBARS IATIC continued SEE COLLECTOR Q2107 BLUE 2SC3052E Q2104 BLUE OUT C2107 11 10ps TAKEN WITH PIP ON 5 1V AND DISPLAY COLORBARS A 32 PAGE 2H R2145 gt 4 7 te 2V 1 25 3052 10 02108 GREEN OUT 2108 STOR 02109 3 9V A F 9 1V 180pF 10 R2129 ms P 31 7 31 8 a 2 5V 180pF I 10 1 C305 9 1V 226 A 31AR 7 A S1R B 1uF R324 0 T R321 R322 100 0 27 100 100 6 18 4 9 2 20 5 0V 6 2V T IN IN B IN CLAMP R S B 100 A732 1 9 24 1K AKB R AKB G AKB B G R327 QV V YM 6 1V 1 8V 100K 25 13 14 19 21 23 22 R370 R356 T c3iil c312 L C313 100 ASS P SEE PIN 1 Ic2104 1000 4 1 10 10 INVERTER R326 PAGE 4D C335 326 2SC3311A 1 0309 VERT BLANK1 32 32 5 ET 5 747 0304 F y R325 2 P 3311AR R358 5 RD9 1ESB2 100K FER 47K M A V 32 32 4 R392 7 4 4700 3 5V LESS i a 3 Sas 9 2 6 7 90V CRT ANODE 26 5KV 27 0KV 150 L
13. 499 11 1 124 499 11 1 124 768 11 1 124 767 00 PARTS
14. 596 1W NF Mtl Flm 6 8 5 2W NF Mil Fim 475 1 4W NF Cbn Elm 475 1 4W NF Cbn Flm 12 596 2W NF Mil Flm 220 5 1 4W NF Cbn Elm 4 75 1 4W NF Cbn Flm For SAFETY use only equivalent replacement part RESISTORS Mfr Part No 1 236 294 11 1 236 491 11 1 236 358 21 1 236 491 11 1 236 776 11 1 215 892 11 1 215 456 00 1 215 865 11 1 215 448 00 1 215 421 00 1 215 457 00 1 215 893 11 1 215 893 11 1 247 722 11 1 216 345 11 1 247 696 11 1 215 884 11 1 215 886 11 1 216 376 00 1 216 376 00 1 215 886 11 1 247 711 11 1 215 880 00 1 216 369 00 1 215 446 00 1 215 459 00 1 249 385 11 1 216 371 00 1 216 453 91 1 215 869 11 1 216 379 91 1 249 443 11 1 249 377 11 1 216 445 91 1 249 409 11 1 249 455 11 NTE Replacement 2W102 1W122 2 215 2 215 QW256 1WD47 QW047 2W047 2W110 2W3D9 2W3D9 2W110 QW168 2W010 2W1D0 QW2D2 2W1D5 2W127 1W210 2W6D8 2W012 QW122 QW4D7 Item No 601 602 603 604 R606 R610 R611 R619 R620 R625 R626 R650 R651 R652 R653 R654 R655 R656 R658 R659 R660 R661 R663 R664 R666 R667 R669 R671 R672 R673 R674 R675 R679 R701 R713 R716 R720 R731 R732 R733 R740 R742 R743 R744 R745 R746 R747 R2111 R2112 For SAFETY use only equivalent replacement part RESISTORS continued Rating 2 2M 10 1 2W Cbn Cmp 1 25 1SW WW 82K 5 1W NF Mtl Flm 56 55 1W NF Mtl Elm 47 5 WW 680 1 1 6W Mtl Film 220K 1 1 6W Mt
15. AUDIO BUFFER FFER R497 33 R493 100 3 9V CC i 4700 19 8 9V 2SA1309AS 2SC3311AR 9 20 oazi maoa 0432 AUDIO MUTE SEE PIN 19 IC101 155119 47K PNO 100 2Q3V A PAGE 3F OV VM 47 gt 0407 8 C475 20 6V 47K 33K 22 R426 R475 100 4 0V i 470 10 5 0 155119 20 V 10 i 2SC33114R 20 6V 9 7 0103 SEE PIN 4 IC101 z CONTROL 23411223 8 PAGE 3G R427 TT 100 39V 7 1 9V 1 5 0V an NC 3 s s SND 2SC3311AR 0410 BUFFER G we 0415 1 402 Y SW R437 aa R439 N 2 MNG 9 100 1501 lt R438 2 4 8V 1090 COMB FILTER 3 9 2V C 7 NC 3 9 2V C 2SC3311AR Q413 BUFFER DNE pes PAGE 4 P 4 2 SEE PIN 49 IC CONTROL PAGE 3G continued C462 220 D SET 2910 Page3 SP1 82 SP2 82 20 6V etos 11904 i AUDIO OUT LEFT i 1 1 i AUDIO OUT RIGHT naas 0 1 100 772 VascxstR 2 J 3311AR 3 25 0416 BUFFER SEE EMITTER 0305 Y 2 9 2V C 2SC3111AR Q417 BUFFER SEE iC301 PIN 5 Y C J PAGE 2B 9 2V C 121 sr T mss 5 1483 59 H 11 11 OOO 051 SENSOR 4 9 al Ny 5 0V 15 R186 5 0V 2200 051 155119 11 1 3 3 H 11 ALS i Nc PIP 552 54 VOL
16. Adjust LC Networks FL2205 FL2206 so that the PIP window size and location is identi cal in all positions MISCELLANEOUS ADJUSTMENTS continued HORIZONTAL SIZE HSIZ Tune in a crosshatch pattern Enter the Service Adjustment Mode Select HSIZ and adjust level for slight horizontal overscan Save ad justment to memory HORIZONTAL CENTER HPOS Perform Horizontal Frequency Adjustment Tune in a crosshatch pat tern Adjust Horizontal Centering Connector A 55 for best horizon tal centering Enter the Service Adjustment Mode Select HPOS and adjust level for best horizontal centering Save adjustment to memory PINCUSHION PAMP CPIN PPHA Tune in a crosshatch pattern Enter the Service Adjustment Mode Select PAMP and adjust level for straight vertical lines at left and right of screen Save adjustment to memory Select CPIN and adjust level for straight vertical lines at top and bottom of screen Save ad justment to memory Select PPHA and adjust level for equal spacing of vertical lines from top to bottom of screen Save adjustment to memory VERTICAL FREQUENCY VFRE Tune in a colorbar pattern Enter the Service Adjustment Mode Se lect VFRE adjustment and adjust the level until the picture locks in Save adjustment to memory VERTICAL SIZE VSIZ Tune in a crosshatch pattern Enter the Service Adjustment Mode Select VSIZ and adjust level for slight vertical overscan Save ad justment to memory V
17. BCUT CROM SPIX SHUE SCOL SBRT RGBP VSOM AFC REF ROFF GOFF BOFF ABLM VSMO AFC REF ROFF GOFF BOFF ABLM TEST DRGB The following adjustments have the listed initial settings Save each adjustment to memory before performing the next one Enter the Service Adjustment Mode Adjust the level of VSOM to 00 AFC to 00 REF to 02 ROFF to 01 GOFF to 01 BOFF to 01 ABLM to 01 TEST to 00 DRGB to O1 DISPLAY POSITION DISP Enter the Service Adjustment Mode Select DISP adjustment Adjust the level to center the display 2 1 2 inches on either side Save ad justment to memory HORIZONTAL FREQUENCY HFRE Tune in a colorbar pattern Enter the Service Adjustment Mode Se lect the AFC Adjustment and set the AFC to 03 Horizontal will lose sync Select HFRE adjustment Adjust the level until the picture locks in Save adjustment to memory Select AFC adjustment and set level to 00 Save adjustment to memory Page 6 SET 2910 PIP ADJUSTMENTS Note Adjustments made with PIP on Refer to Digital Adjustment Procedure in Miscellaneous Adjustment Section PIP BRIGHTNESS AND CONTRAST Tune in a picture Set Brightness Color and Picture to MINIMUM Adjust Bright Level Control RV2 105 for just visible highlights Set Picture and Brightness to Maximum and adjust Contrast RV2108 for minimum blooming Set Picture Brightness and Color to reset PIP WINDOW POSITION Tune in a picture Place PIP window in upper left
18. a white signal Set the Picture and Bright controls to Maximum 2 Confirm that the voltage at TP 85 is more than 108V when the set is operating normally with 120VAC supply Hold down Operation Confirmation 1 Turn the Power switch on and receive a white screen Adjust ABL current to 1650 80uA with Picture and Bright controls 2 Gradually apply DC voltage to TP 85 and confirm that the voltage is less than 137 5V when raster disappears during operation of the hold down circuit Note When the hold down circuit starts operating turn the set off immediately 3 Turn the Power switch on and receive a dot pattern Adjust ABL current to 150 50uA with Picture and Bright controls 4 Gradually apply DC voltage to TF 85 and confirm that the voltage is less than 138 5 V when raster disappears during operation of the hold down circuit Note When the hold down circuit starts operating turn the set off immediately Hold down Readjustment 1 If Hold down Operation Confiition cannot be satisfied readjustment should be performed by altering the resistance value of R570 B VOLTAGE CONFIRMATION The following adjustment should always be performed when replac ing IC653 and R675 1 Supply 130VAC 1VAC with variable auto transformer 2 Receive a monoscope signal 3 Set Picture and Bright controls to initial reset position 4 Confirm that the voltage at TP 91 is less than 137V 5 If step 4 cannot satisfied re
19. missing Check the voltages waveforms and components associated with Horizontal Width IC 1C2102 Horizontal Pulse Transistor Q2117 and pin 39 of Y C J IC 1C301 waveform at pin 60 of IC2204 is present Check the voltages waveforms and components associated with IC2204 and IC2206 PIP VERTICAL Check for the proper waveform at pin 23 of PIP Cont IC IC2204 If the waveform is missing Check the voltages waveforms and components associated with pins 10 thru 13 of IC2104 Vertical Pulse Transistor Q2119 and pins 5 and 36 of Y C J IC 1C2103 If waveform is present at pin 23 of IC2204 check for the proper wa veform at pin 61 of IC2204 If waveform is missing Check the voltages waveforms and components associated with pins 1 and 2 of IC2 104 and Buffer Transistor Q3 12 If waveform is present at pin 23 of IC2204 Check the voltages waveforms and components associated with IC2204 PIP SYNC If there is no vertical or horizontal sync Check the voltages waveforms and components associated with V Buffer 3 Transistor Q2125 and Buffer Transistor Q2130 If there is no vertical sync Check the voltages waveforms and components associated with pm 5 of Y C J IC 1C2103 If there is no horizontal sync Check the voltages waveforms and components associated with pin 4 of IC2103 PIP VIDEO Check for the proper waveform at pin 34 of Y C J IC 1C2103 If video is missing at p
20. s R140 Parr 2200 106 107 112 220 0109 R141 22 155119 2200 22uF 1 1 2 C113 0022 12 5 0V 2SC3311AR 2SC3311AR R152 D108 R153 Q107 AC SET 0108 AC BUF 2200 155119 3900 R1110 IN R139 S 3300 5 CC 2200 ths SEE PIN 9 R1109 VN Rl IC301 Y C J 199 6131 LC130 60 ag 2 022 den 1 12 61 2 12 R1107 5 0V 2700 SER PIN als 5 0V 100K 62 Ris PAGE 2C R406 R166 2700 SEE PIN 10 4 2 960 U1 22 A 22 2200 IC301 Y C J ad R167 LE RA 16 R11 1 8 2200 31901 1 TOP PART 39 81117 PAGE 108 12 220 220pF _ 108 5 0V 220pF 52 1 5 0V L SET 2910 Page3 C118 100pF 8 2 m ov D103 15 113 TRL sols R162 aiz paz RSI TweR 47 220 STEREO 270 FM TRAP AE 2 22 01 22 135 SEE iF201 ie MoDuLe 2200 2 0V PAGE 2A 20 2 3v E PIN 28 gt VO VERT PULSE 224 PAGE 2C 4v CP108 mE ME 220 220pF _ X IN e m I mas 28 2 0V phan R1017 R136 15K 2200 HORIZ SYNC 1 4V 1104 01079 C127 0105 1SS119T 220pF T 155119 a R150 SEE PIN 39 301 2 0 4700 H PAGE 2 59 ov 2SC3311AR 9130 VERT PULSE sis 1 SEE PIN 29 AV IC301 Y C J 220 7 2200 sali PAGE 2B _ R165 R148 47K 47K 6 5 0V 1 NC ov CONTROL SCH MATIC continued
21. 00 CHECK HOLD DOWN ADJUSTMENT 0311 BUFFER FOR R559 AND R570 a 9371 3 100 51 51 SEE BASE 02117 CABLING HORIZ PULSE 529 2 HEAVY UNES REDUCE R391 11 11 4 069 1 43 USE MULTIPLE LINES 10K O 1 2 9 2V _ _ _3 _4 _ _ SCHEMATIC 2SA1309AR 2SC3311AR 25 3311 iro 1 CONTROL 0315 GAMMA 1 Q314 EQUALIZER 0310 BUFFER PAGE SC 1 R387 150 Se PAGE 36__ 2 9 CL i 680 22V q 100 lt R382 A R300 R382 C351 1000 68pF L 3 9 2V A 2SC3311AR 0316 GAMMA COMP2 9 2V A 9 2V A 2SA1309AS R435 Q409 BUFFER 470 SEE 28 SEE EMITTER U1 22 A 22 IC444 AV SW 007 Y ae C IN 2135 38 30 7 32V 1 9v m I ns 9 2V A TAKEN WITH CHROMA 2SA1309AR Ic rin BAR SWEEP GENERATOR 2 1V YE 34v 60 LLLI 9 2V 4 R361 R500 1500 22K 018139 513 52 2 0V VERT VERT 500 VERT OUT 4 HOLD HOLD 0 OSC 2 0V 15 0541 42V 14V 6 1 32 38 29 34 R552 334 C332 R363 2 2 022 1 Lot T c328 8367 528 ta 330K 13 1V SEE BASE 0130 546 VERT PULSE 36 10ps 3 4V C500 10ps 0022 25 2688 15V 10 R348 C501 Q501 HORIZ DR 58 gt 89 2V 6800 gt C502 C505 L C503 P 5045 220pF 330pF p C337 500V 500V 14 gy 160v R350
22. 06 ECG2408 ECG2406 ECG2410 ECG2406 ECG2408 ECG2409 ECG2409 ECG2406 ECG2408 ECG2406 ECG2408 ECG2409 ECG2409 ECG2406 ECG2408 ECG2409 ECG2409 ECG2406 ECG2408 ECG2406 ECG2408 TCE Part No SK10097 SK10099 SK10097 SK10099 SK10097 SK10097 SK10099 SK10100 SK10100 SK10097 SK10099 SK10097 SK10099 SK10100 SK10100 SK10097 SK10099 SK10100 SK10100 SK10097 SK10099 SK10097 SK10099 IST continued CP101 CP102 CP103 CP107 CP109 R161 R266 R268 R311 R313 R341 R502 R503 R505 R506 R510 R512 R513 515 519 R523 R530 R533 R540 R546 R551 R552 R554 R563 R564 R565 R566 R567 R569 R574 R591 Item No Rating Resistor Network 47K x 596 x 8 Resistor Network 10K x 596 x 4 Resistor Network 47K x 5 x4 Resistor Network 10K x 596 x4 Resistor Network 4700 x 5955 x 4 1000 5 2W NF Mtl Elm 30K 1 1 6W Mtl Flm 220 5 1W NF Mtl Flm 13K 1 1 6W Mtl Fim 1000 1 1 6W Mtl Fim 33K 1 1 6W Mtl Flm 1500 5 2W NF Mtl Elm 1500 596 2W NF Mtl Flm 5600 5 1 4W NF Cbn Flm 47 596 1W NF Mtl Elm 47 596 1 4W NF Cbn Flm 47 596 2W NF Mtl Flm 100 5 2W NF Mtl Elm 3 9 5 2W NF Mtl Flm 3 9 5 2W NF Mtl Film 100 5 2W NF Mtl Flm 680 5 1 4W NF Cbn Elm 105 2W NF Mtl Fim 15 2W NF Mtl Flm 11 1 1 6W Mtl Flm 39K 1 1 6W Mtl Fim 2 2 596 1 4W NF Cbn Flm 1 5 5 2W NF Mtl Fim 270 596 2W NF Mtl Flm 1000
23. 1 19 8 719 911 55 8 719 911 19 8 719 976 64 8 719 300 33 8 719 979 85 8 719 302 43 8 719 110 61 8 719 911 19 8 719 305 07 8 719 511 40 8 719 911 55 8 719 911 19 8 719 911 19 8 719 110 78 8 719 911 19 8 719 302 06 8 719 311 31 8 719 301 64 8 719 948 59 IT gt NTE Part No 5013 519 NTE613 NTE519 NTES013A 5021 519 5011 519 5018 5026 519 NTE5027A 5013 5019 5011 519 NTES806 5806 5806 519 5806 NTES19 NTE580 NTES80 587 5031 519 NTE5330 166 168 156 5806 519 519 5036 519 552 552 580 580 506 588 ECG5013A ECG519 ECG613 ECG519 ECG5013A ECGS021A 519 5011 ECGS19 ECG5018A ECG5026A ECG519 ECG5027A ECG5013A 5019 ECGSO11A ECG519 ECG5806 ECG5806 ECGS806 ECG519 5806 ECG519 ECG580 580 ECG587 ECGS031A ECG519 ECG5330 ECG166 ECG168 ECG156 ECG5806 ECG519 ECG519 ECG5036A ECG519 ECG552 ECG552 ECG580 ECG580 ECG506 ECG588 TCE Part No SK6A2 SK3100 SK3326 SK3100 SK6A2 5 12 5 3100 SK5A6 SK3100 SK9A1 SK17A SK3100 SK18A SK6A2 SK10A 5 5 6 SK3100 SK3848 SK3848 SK3848 SK3100 SK3848 SK3100 SK3318A SK5036 SK9937 SK24A SK3100 SK9972 SK9075 SK
24. 1 O 2SA1309AR 2SA1309A QRS 2SA1091 O 2SC3311AR 2SC3311A QRS 02101 Q2103 2SA 1037K 2SA1162 G 02104 Q2109 25 3052 2SC1623 L6 Q2114 Q2116 28A1037K 254 1162 C Lead configuration may vary from original 8 729 822 65 8 729 423 44 8 729 423 37 8 729 202 03 8 729 423 37 8 729 200 17 8 729 423 44 8 729 423 37 8 729 423 44 8 729 423 37 8 729 326 11 8 729 423 37 8 729 200 17 8 729 326 11 8 729 423 37 8 729 200 17 8 729 326 11 8 729 423 37 8 729 255 12 8 729 423 44 8 729 255 12 8 729 423 44 8 729 200 17 8 729 423 37 8 729 216 22 8 729 100 66 8 729 216 22 NTE2324 NTE2324 NTE2362 NTE2362 NTE2361 NTE2361 NTE291 NTE2361 NTE2361 NTE288 NTE288 NTE2362 NTE2362 NTE2361 NTE2361 NTE2362 NTE2362 NTE2361 NTE2361 NTE157 NTE2361 NTE2361 NTE288 NTE288 NTE157 NTE2361 NTE2361 NTE288 NTE288 NTE157 NTE2361 NTE2361 NTE399 NTE2362 NTE2362 NTE399 NTE2362 NTE2362 NTE288 NTE2361 NTE2361 NTE2409 NTE2409 NTE2406 NTE2408 NTE2409 NTE2409 ECG2324 ECG2324 ECG2362 ECG2362 ECG2361 ECG2361 ECG291 ECG2361 ECG2361 ECG288 ECG288 ECG2362 ECG2362 ECG2361 ECG2361 ECG2362 ECG2362 ECG2361 ECG2361 ECG157 ECG2361 ECG2361 ECG288 ECG288 ECG157 ECG2361 ECG2361 ECG288 ECG288 ECG157 ECG2361 ECG2361 ECG399 ECG2362 ECG2362 ECG399 ECG2362 ECG2362 ECG288 ECG2361 ECG2361 ECG2409 ECG2409 ECG2406 ECG2408 ECG2409 ECG2409 TCE Part No
25. 2 and 31 of IC2 103 Check the 3 58MHz oscillator at pins 15 and 18 of IC2103 Check the voltages and components associated with Sub Color Control and pin 13 of IC2103 Check the voltages and components associated with Sub Hue Control and pin 12 of IC2103 If chroma waveform is present at pins 20 and 22 of 1 2103 check for the proper waveforms at pins 17 and 18 of A D Conv IC 1C2206 If the waveforms are missing at pins 17 and 18 of IC2206 Check the voltages waveforms and components associated with R Y Out Transistor Q2103 and B Y Out Transistor 42114 If the waveforms are present at pins 17 and 18 of IC2206 check for the proper waveforms at pins 4 of R Y D A Conv IC 1C2202 and B Y D A Conv IC 1C2203 If the waveforms are missing at pin 4 of IC2202 and IC2203 Check the voltages waveforms and components associated with IC2202 IC2203 PINP Conv IC 1 2204 and IC2206 If the waveforms are present at pin 4 of IC2202 and IC2203 Check the voltages waveforms and components associated with R Y Buffer Transistor Q2203 B Y Buffer Transistor 02204 Red Drive Transistor 02106 Blue Drive Transistor Q2107 and Green Drive Transistor 42109 V 3050 SISSVHO 02HX3 2 AM 4050 225 SISSVHO 52 X3 2 MXI ST300W SET 2910 Page 1 Page2 SET 2910 A TELEVISIO 10ps SA1309AR C346 0329 R375 2SC3311A 2 SEE EMITTER 0418 u1 22 A 22 1200 7M Q30
26. 216 486 51 1 247 704 11 1 247 704 11 1 247 704 11 1 215 902 11 1 249 429 11 1 249 429 11 1 249 429 11 1 247 713 11 1 215 902 11 1 247 725 11 1 216 657 11 1 216 657 11 NTE Replacement HW522 1W382 1W056 PARTS LI continued RESISTORS continued No Rating Mfr Part No NTE Replacement R2113 1500 1 1 6W Mtl Flm 1 215 425 00 R2117 1500 596 1 10W Mtl Chp 1 216 655 11 R2122 1600 596 1 10W Mtl Chp 1 216 656 11 R2124 3600 1 1 6W Mtl Flm 1 215 434 00 R2127 1500 5 1 10W Mtl Chp 1 216 655 11 R2145 475 1 4W Cbn Fim 1 249 377 11 R2535 105 1W NF Mtl Flm 1 215 857 11 R2552 180 596 1 10W Mtl Chp 1 216 633 11 THP601 4 7 Cold PTC 1 808 081 23 ANOS 4 For SAFETY use only equivalent replacement part COILS amp TRANSFORMERS No Function Mfr Part No Number on unit Russell Part No L515 Horiz Linearity 1 459 224 13 L550 Yoke 110 Horiz 81mh 1 451 275 31 1 451 275 12 Vert 21mh T500 Horiz Output 1 439 416 41 1 439 423 21 T501 Horiz Drive 1 437 195 12 1 437 195 11 1502 1 421 794 11 604 Power 1 448 916 11 651 Switching 1 449 953 11 For SAFETY use only equivalent replacement part SPEAKERS Part Quam Part No Description No No V 090 SISSVH2 0 X3 7 V 40Sq 29S SISSWHO SZHX3L2 AN 513000 SP1 SP2 Sealed Unit 8 ohms 1 544 313 11 SET 2910 Page 10 Page 11 item No 701 702 2103
27. 311A QRS 2SA1309AR 2SA1309A QRS 2SC3311AR 2SC3311A QRS 2SA1309AR 2SA1309A QRS 2SC3311AR 2SC3311A QRS 2SC3311AR 2SC3311A QRS 25 1309 5 2SA1309A QRS 2SC3311AR 2SC3311A QRS 2SC3311AR 2SC3311A QRS 2SC3311AR 2SC3311A QRS 2SA1309AS 2SA1309A QRS 25 2688 2SC2688 LK Mfr Part No 8 759 982 26 8 759 030 99 8 729 423 37 8 729 423 44 8 729 423 37 8 729 423 37 8 729 423 37 8 729 423 44 8 729 423 37 8 729 423 44 8 729 423 37 8 729 967 32 8 729 993 72 8 729 423 37 8 729 423 44 8 729 423 37 8 729 423 44 8 729 423 37 8 729 423 37 8 729 423 44 8 729 423 37 8 729 423 37 8 729 423 37 8 729 423 44 8 729 119 80 For SAFETY use only equivalent replacement part Lead configuration may vary from original NTE Part No NTE950 NTE950 NTE2361 NTE2361 NTE2362 NTE2362 NTE2361 NTE2361 NTE2361 NTE2361 NTE2361 NTE2361 NTE2362 NTE2362 NTE2361 NTE2361 NTE2362 NTE2362 NTE2361 NTE2361 NTE18 NTE20 NTE17 NTE17 NTE2361 NTE2361 NTE2362 NTE2362 NTE2361 NTE2361 NTE2362 NTE2362 NTE2361 NTE2361 NTE2361 NTE2361 NTE2362 NTE2362 NTE2361 NTE2361 NTE2361 NTE2361 NTE2361 NTE2361 NTE2362 NTE2362 NTE157 NTE157 ECG Part No ECG950 ECG950 ECG2361 ECG2361 ECG2362 ECG2362 ECG2361 ECG2361 ECG2361 ECG2361 ECG2361 ECG2361 ECG2362 ECG2362 ECG2361 ECG2361 ECG2362 ECG2362 ECG2361 ECG2361 ECG18 ECG20 ECG17 ECG17 ECG2361 ECG2361 ECG2362 ECG2362 E
28. 3300 R2253 100 2 1V 53 16 5 2V 5 17 i men 5 2 NES SEO 2 21 LI 1 1 1 I R2228 R2227 R2226 R2225 R2224 R2229 3300 3300 3300 3300 3300 3300 R2252 100 1 5VI5 23 L8_ 5 2V 24 25 27 48 l J J 2 00 5 58 29 ovite R2200 R2201 R2202 R2203 1 R2204 R2240 33003 33002 33002 33002 3300 3300 R2254 100 30 25199 SN74LS19AN SN74LS19AN Hane PART OF 1C2104 PART OF 1C2104 1 4 nanakia ST 1000 2SC3052E is Q2244 YS BUFFER 1 SEE PIN 15 1000 5v ic301 Y C J PAGE 2C C2243 TAKEN WITH PIP ON AND DISPLAYING COLORBARS 3 9v H 10 ND 5 MISCELLANEOUS ADJUSTMENTS PRETUNING Note Use Remote Commander to accomplish prehming dures require an antenna or cable connected and power supplied to the set Auto Memory 1 Press the Auto Program button Add Channel 1 Select Channel 2 Press Add button 3 Repeat steps one and two to add other channels Delete Channel 1 Select Channel 2 Press Erase button 3 Repeat steps one and two to erase other channels Guide Function 1 Press the Guide button to select Time Timer and Channel Block 2 Select function by pressing guide button until desired function is highlighted Press Enter button 3 Follow the displayed instructions 1 Press Sleep button The set will turn off automatically in approximately one hour 2 T
29. 3648 SK3051 SK3848 SK3100 SK3100 SK33A SK3100 SK9000 SK9000 SK5036 SK5036 SK3925 SK9938 3090 5 SISSVHO 0zuX3ZC 9 v 3080 99S SISSWHO ScuX32C MI sTagOW ANOS SET 2910 Page9 Page 10 SET 2910 D627 D701 D709 D710 D713 D900 D910 D2011 D2012 MA152WK D2102 3 D2106 7 D2108 D2130 D2131 D2550 1 D2552 3 IC51 IC101 IC102 IC103 IC104 IC251 IC301 IC402 3 IC405 IC444 IC500 IC531 IC601 1C603 1 604 1 651 1 652 16653 1 2000 1C2102 1C2103 1 2104 1C2201 2 3 1 2204 1 2206 1 2601 SEMICONDUCTORS continued Select replacement for best results Type No ERB93 02 1SS119 1SS83 RD9 1ES B2 RD3 6M B1 1S2837 8 719 400 18 1S2837 MA152WK 1S2837 MA152WK EL1Z 1S2837 MA152WK 5 1 2 RD6 8M B1 RD12M B1 SBX1483 59 M37100M8 115SP PCD8582 MN1280 S MB88201 638L CXA1264AS 13135 NJM2245S TDA2009A CXA1114P TDA8172 RC4558P UPC78NO5H UPC7893HF UPC78N05H STRS6301 STR S6301 PS2501 1LB SE 135NS CXA1315P SN74LS 123N 8601 TA8601BN FA 1 SN74LS19AN D6901G UPD6901G D42272AGF UPD42272AGF C661G UPC661G 78 05 RC78M05FA For SAFETY use only equivalent replacement patrt Mfr Part No 8 719 948 59 8 719 911 19 8 719 110 13 8 719 105 51 8 719 400 18 8 719 400 18 8 719 302 43 8 719 400 18 8 719 105 82 8 719 106 16 8 719 106 70 8 741 148 33 8 759 635 34 8 759 972
30. 43 8 759 403 44 8 759 978 66 8 752 037 24 8 752 035 52 8 759 710 68 8 759 980 43 8 752 053 17 8 759 980 58 8 759 945 58 8 759 112 06 8 759 142 04 8 759 112 06 8 749 920 57 8 719 156 73 8 749 920 62 8 752 035 53 8 759 901 23 8 759 234 63 8 759 989 67 8 759 148 69 8 759 149 90 8 759 148 68 8 759 982 31 NTE Part No 588 519 177 5018 595 595 595 595 595 595 587 595 595 1788 NTE778A ECG Part No 588 ECG519 ECG177 5018 ECG595 ECG595 ECG595 ECG595 ECG595 ECG595 ECG587 ECG595 ECG595 ECG1788 ECG778A ECG960 ECG960 TCE Part No SK9938 SK3100 SK9091 SK9A1 SK9944 SK9944 SK9944 SK9944 SK9944 SK9944 SK9937 SK9944 SK9944 SK9875 SK3465 SK3591 SK3591 PARTS Item No IC2602 IC2603 Q101 Q103 Q105 Q106 Q108 0130 0202 3 0301 2 Q303 Q304 Q305 6 Q307 Q308 Q309 Q312 Q313 Q314 Q315 Q316 Q318 Q400 Q408 Q409 Q413 Q417 Q430 Q432 Q433 Q501 SEMICONDUCTORS continued Select replacement for best results Type No 78L12A RC78L12A MC7809CT 2SC3311AR 2SC3311A QRS 2SA1309AR 2SA1309A QRS 2SC3311AR 2SC3311A QRS 2SC3311AR 2SC3311A QRS 2SC3311AR 2SC3311A QRS 2SA1309AR 2SA1309A QRS 2SC3311AR 2SC3311A QRS 2SA1309AR 2SA1309A QRS 2SC3311AR 2SC3311A QRS 2SC1652RE 25 2673 0 2SA937R 2SA937 Q 2SC3311AR 2SC3
31. 5 Y Q313 BUFFER SEE PIN 20 IC101 PAGE 3D CONTROL PAGE 3G FOR TERMINAL GUIDES AND NOTES SEE PAGE 7 R11 PHOTO CIRCUITRACE SEE 21 SCHEMATIC CIRCUITRACE 1C251 _MTS DECODE PAGE 3A TAKEN WITH BAR TUNERS C106 C 0022 SWEEP GENERATOR THIS COVERAGE 6 5 4 2 4V 9 2V A 4 3V 0V 0 OV 10 AFT AFT AFT UP MPX OUT IF FROM F F201 FROM F F201 IF MODULE RF AGC VOL OUT 7 4 IV 35V 1 SEE BASE 0105 no HORIZ SYNC M AGC 20 PAGE 3F NR TUNER RF RANGE 5 3V TO 7 6 SEE PIN 22 101 CONTROL PAGE 3F 0102 AGC MUTE 2SA1309AR 0302 V SEXT 1 2SA1308AR 0301 Y BUFFER PART CXA1313S SYNC IC301 Y C J 45 1 5V VEI 21 E W DRIVE HP HD 470pF 4 0V l J Y 2 9V 28V 4 4 21 30 20 35 36 391 37 33 C333 9 2V A R362 R338 220 1000 22 1 0394 1 uF V C315 ms C326 R343 R585 kD C325 022 D3074 1 25 T 8200 2700 155119 2SC1652RE 0507 AFC DET R354 R372 2SC3311AR 150 22K 9 2V R34 Q306 BUFFER 220 0300 5 5V R331 3 0V R330 R345 RD5 6SB2 22 E d CC 22K 2 iav 8533 R3324 94 T 9 22K3 3eK R329 5 P C316 R334 22K A7uF R344 500V 100K 0302 9 2V M AS RD5 6ESB2 Ops Fs SEE PIN 59 1101 CONTROL WHEN REPLACING C545 C627 D531 0653 PM501 PAGE 3G Q607 0608 R559 R570 R591 R627 R628 R675 2SC3STTAR AND T5
32. 9 Y FL2213 T 3 9V 1 9V 10 WITH PIP 33v 15K 2 3V P ur DISPLAYING COLORBARS FILTER 2110 2147 254 R2542 39pF 12 22002 15K 1000 E L5_ 5 2 5VI53 WITH PIP 9 1V 9 1V 2225 DISPLAYING COLORBARS 12201 101 FTT me 2 4 2230 l C2231 Sas WITH 1017 100 T 3 0VI22 DISPLAYING ET 2226 wm 12200 TN DISPLAYING COLORBARS DISPLAYING COLORBARS 22 C2228 1 022294 245 0V A sv 101 T 100 2227 10 s 5 2 401 J SN74LS19AN SN74LS19AN PART OF 1C2104 L2214 n PART OF 1 2104 n UE COE R 1000 7 14 SEE COLLECTOR 82248 0312 BUFFER 1000 PAGE 2C u FILTER SN74LS19AN SN74LS19AN PART OF IC2104 PART OF 1 2104 FL2218 270pF R2247 1000 2SC3052E Q2117 HORIZ PULSE SEE EMMER Q311 BUFFER PAGE 2A 18 SN74LS123N 2CLR c2102 FL2209 47 D3 04 02 Di gt continued N lt 8 C2239 L C2242 LL AT 10 ADCK 4 1 2 5 2V uP042272AGF 12204 PINP CONT M 014 2245 i C2240 5 2V i i 0 WITH PIP DISPLAYING COLORBARS 8 ilps SET 2910 4 45 10 a4 11 12 Jd 2 39 zu 15 R2218 R2217 R2216 1 R2215 R2214 R2219 33002 33002 3300 33002
33. 91 POWER SUPPLY SCHEMATIC continued 2SC3311AR Q601 RLY DRIVE R605 0604 1000 155119 R627 4700 2SC3311AR Q607 PROTECT 47uF 2SA1309AR R629 Q608 PROTECT 1000 135V SOURCE SEE PIN 8 501 X RAY PROTECT PAGE 2E 135v SOURCE 9 2V A SOURCE C342 38 01 I 022 po 9 2V B SOURCE 9 2 52 0 6 64 64 5 0V C673 2 C622 SOURCE 100uF 100uF 65 L P 65 A 2 5 2V C2612 IL 1 C2178 el C2179 4L C2609 1 C2602 C2601 SOURCE 100uF n2208 35 P 33uF 001 I 001 l 100uF 01 12601 5 2 2 5 FILTER 2224 LL C2222 L 2607 L8 SOURCE T 1O00gF T 1 0 2223 C2213 C2221 1 2608 1 C2207 FL2207 100pF l 01 01 001 1 401 I 01 PEER C2611 L C2200 L C2208 C2215 L c2214al C2610 L9 SOURCE 001 01 01 I 001 1004F T 100 Page3 SET 2910 A SEE PIN 10 201 iF MODULE 100 PAGE 2A PAGE 2 __ 6 26582 400 2 1 2 262 U1 22 Ae RIOT EON eni t S PAGE _ MTS DECO 2SC3311AR 2SC3311AR 2SC3311AR 0402 BUFFER niis Q405 Y C MIX Q406 BUFFER 2722757 U2 2 U1 2 100 ax 027 i 3 0V C 62 ee 5 6V R408 S R420 NT 22 gt 10K L3 1000 1000 s 9 2V C EI 9 2V C 9 2 R421 R423 C406 3 9 2V C ir MM 0401 R419 i 47 1000 L3 M412 9 2V C 0405 RAN e
34. CG2361 ECG2361 ECG2362 ECG2362 ECG2361 ECG2361 ECG2361 ECG2361 ECG2362 ECG2362 ECG2361 ECG2361 ECG2361 ECG2361 ECG2361 ECG2361 ECG2362 ECG2362 ECG157 ECG157 TCE Part No SK9169 SK9169 SK10093 SK 10093 SK10094 SK10094 SK10093 SK10093 SK10093 SK10093 SK10093 SK10093 SK10094 SK10094 SK10093 SK10093 SK10094 SK10094 SK10093 SK10093 SK9666 SK9668 SK9665 SK9665 SK10093 SK10093 SK10094 SK10094 SK10093 SK10093 SK10094 SK10094 SK10093 SK10093 SK10093 SK10093 SK10094 SK10094 SK10093 SK10093 SK10093 SK10093 SK10093 SK10093 SK10094 SK10094 SK3747 SK3747 Item No Q502 Q504 Q505 Q530 Q601 Q603 Q604 0605 7 Q608 Q611 12 Q701 Q702 Q703 Q704 0705 0706 7 0708 0709 0710 0711 0712 0713 0900 1 0714 0716 Type Mfr Part No SEMICONDUCTORS continued Select replacement for best results NTE Part No ECG Part No 2SD1886 2SD1886CA 2SA1309AR 2SA1309A QRS 2SC3311AR 2SC3311A QRS 2SD1761F 2SD1408 Y 2SC3311AR 2SC3311A QRS 2SA1091R 2SA1091 O 2SA1309AR 2SA1309A QRS 2SC3311AR 2SC3311A QRS 2SA1309AR 2SA1309A QRS 2SC3311AR 2SC3311A QRS 28 2611 2SC3311AR 2SC3311A QRS 2SA1091R 2SA1091 O 25 2611 2SC3311AR 2SC3311A QRS 2SA1091R 2SA1091 O 25 2611 2SC3311AR 2SC3311A QRS 28 2551 2SA1309AR 2SA1309A QRS 2SC255
35. E OUT SEE BASE Q2108 GREEN OUT PAGE 2D R2127 1500 Y 30S0 29S SISSVH2 079X9 2 4050 225 SISSVHO SCHX3Z2 AM 51300 PHOTO CIRCUITRACE SCHEMATIC CIRCUITRACE 11 FOR TERMINAL GUIDES NOTES SEE PAGE 7 SET 2910 Page2 POWER SUPR NC NC 635522 635 3 FROM TIE POINT J NC _ 6 63 2 6 63 5 G 1A2 NC NC N PS2501 1LB R666 2SC3311AR 75 0 1C652 TRANSFER 470 9611 DRIVE d 2SC3311AR NOTE WHEN REPLACING IC653 OR Q612 SOFT START R663 CONFIRM THAT THE VOLTAGE OF B ee STANDARD 6 32 32 11 0602 51 10 5 SEE BASE 0107 C SET A PHOTOFACT Page4 SET 2910 LY SCHEMATIC 25410918 2SC3311AR R617 2SA1309AR WHEN REPLACING C545 C627 D531 IC653 PM501 0603 OCP 1 Q605 2 4700 0604 OVP 3 Q607 Q608 R559 R570 R591 R627 R628 R675 R614 R612 AND 7500 CHECK THE HOLD DOWN ADJUSTMENT FOR R559 AND R570 SEE PIN 7 IC101 CONTROL PAGE 3F 61 6 61 gt 4 TAKEN FROM COMMON TIE POINT 61 6 61 PHOTO CIRCUITRACE FOR TERMINAL GUIDES NOTES gt 6 61 SEE PAGE 7 SCHEMATIC CIRCUITRACE 300V ilps D625 10 ERB93 02 FB608 C652 R650 1500 220 17 0V 27805 C610 SOURCE REG 470pF 5 0V C110 C136 SOURCE 47pF I 47uF 5 0V SOURCE 4 8 SOURCE ANDARD NOTATION SCHEMATIC ard W Sams amp 19
36. ERTICAL POSITION VPOS Tune in a crosshatch pattern Enter the Service Adjustment Mode Select VPOS and adjust level to center picture vertically Save ad justment to memory VERTICAL LINEARITY VLIN Tune in a crosshatch pattern Enter the Service Adjustment Mode Select VLIN and adjust level for equal vertical spacing of pattern Save adjustment to memory VERTICAL COMP VCOM Enter the Service Adjustment Mode Select VCOM and adjust level to 02 Save adjustment to memory CHROMA TRAP CROM Tune in a colorbar pattern Set Color to Maximum and turn NOTCH on Connect an oscilloscope to TP47R On C Board Enter the Ser vice Adjustment Mode Select CROM and adjust level for MINI MUM chroma Save adjustment to memory SUB BRIGHTNESS SBRT Tune in a crosshatch pattern Set Picture and Brightness to MINI MUM Enter the Service Adjustment Mode Select SBRT and adjust level for visible highlights Save adjustment to memory SUB CONTRAST SPIX Tune in a crosshatch pattern Enter the Service Adjustment Mode Select SPIX and adjust level for best picture Check tracking by ad justing Picture and Brightness to MINIMUM and Maximum and check for blooming Readjust if necessary Save adjustment to memory SUB HUE AND SUB COLOR SHUE SCOL Tune in a colorbar pattern Connect an oscilloscope to TP47B On C Board Enter the Service Adjustment Mode Select SCOL and adjust level for 3 5V p p Tune in an active channel
37. MODELS 27 25 CHASSIS SCC D50F A KV 27EXR20 CHASSIS SCC D50E A SET 2910 SONY PHOTOFACT Technical Service Data SONY Model KV 27EXR25 Chassis SCC D50F A INDEX Adjustment and Alignment Tools Convergence Adjustments GridTrace Location Guide Important Parts Information Miscellaneous Adjustments Parts List Photos Cabinet Rear View CRT Neck Assembly PBoard BottomBoard 7 8 P Board Board 7 8 VI Board Complete coverage for servicing a television receiver Schematics Parts lists PIP Adjustments Placement Chart e Component Troubleshooting Safety Precautions Safety Related Adjustments locations guide Schematics Control Coverage includes this additional model chassis D A Converter MODEL CHASSIS MTS Decoder KV 27EXR20 SCC D50E A Power Supply Television Terminal Guides and Notes Test Equipment Troubleshooting Tuner Terminal Guide Tuner Voltage Chart For Supplier Address HOWARD W SAMS amp COMPANY See PHOTOFACT Annual Index DECEMBER 1991 SET 2910 TROUBLESHOOTING POWER SUPPLY Check AC Fuse F60 1 If F60 1 is open Check Bridge Rectifier Diodes D601 and D602 Resistor R601 Capacitors C601 C603 thru C606 Electrolytics C607 and C650 Power Converter IC IC65 1 and Power Transformer T604 Apply 120V and check for 17 0V at the lead of D602 If 17 0V is missing Check Line Filters
38. O CIRCUITRACE CABLING HEAVY UNES REDUCE USE OF MULTIPLE LINES SCHEMATIC CIRCUITRACE C732 0707 R710 155119 580 1705 1000 175 SA1091R 0707 RED 1 151 SEE Y T500 0712 15585 171 2SA1091 0 0716 RED 1 730 0701 156119 680pF L707 173V 2SA1091R 6 0703 BLUE 1K DET 147V 1 S TO CRT 1 75 SHIELD 8091 R702 G2 R715 1M 2200 1000 01 R703 14 220K 2SA1309AR 1000V Q711 BUFFER BOOST 200V AV 9V 200 22K R7411 V R749 220 1000 47K 3 9 2V 8 FOCUS RANGE 4KV 6 5KV D A CONVERTER SCHEMATIC TAKEN WITH PIP ON AND DISPLAY COLORBARS 16 uPD6901G 162203 B Y D A CONV poBO LSB 17 18 19 20 21 22 25 24 25 26 27 28 29 30 01 C2218 100 2SA1037K Q2201 REF VOLT 2 gt R2207 1 R2209 R2208 33 C2201 gl C2202 00 L9 5 2V 5 2 2SA1037K TAKEN WITH PIP ON AND DISPLAY COLORBARS Q2203 R Y BUFFER 2SA1037K 02204 BUFFER WITH PIP AND DISPLAY COLORBARS te SV LOps R2231 1000 2 3V 2SC3052E a Q2200 REF VOLT 1 5 2 H 9 1V 2SA1037K Q2202 Y BUFFER 25 3052 02106 RED DRIVE 1800 3 5V 5 4V R2112 2SC3052E Q2107 BLUE DRIVE PAGE 2D 1800 5X 9 1V ANOS SEE BASE Q2105 SEE BASE Q2104 BLU
39. R2198 2SA1037K Q2125 V BUFFER 3 C2235 4 4 1V 2 2uF 1 R21301 R21311 2130 F 15K 220 2 152837 pi 1 32 25 5052 02130 BUFFER 5 9 1V 5 6V 9 1V 02131 CABLING 3 RD5 1MB1 HEAVY UNES REDUCE USE OF MULTIPLE LINES TAKEN WITH PIP ON AND PHOTO CIRCUITRACE DISPLAYING COLORBARS SCHEMATIC CIRCUITRACE FOR TERMINAL GUIDES AND NOTES TAKEN WITH PIP ON AND SEE PAGE DISPLAYING COLORBARS 4700 A PHOTOFACT STANDARD NOTATION SCHEMATIC wim Howard W Sams amp Co 1991 R2011 auo 49 R2002 R201 10K 5 NC 4700 9 1V 12 3 5 SEE PIN 37 CXA1315P 10101 CONTROL 1C2000 D A CONTROL A D2550 5 2 5 RD6 8MB1 14 8 1 7 2 9 a 82523 2 R2008 R200 R2000 R2001 1 4 Dir EMITTER Q106 220 R2003 10K 10K 10K 10K PAGE i 10K 02551 M0 8M8 SI 5 2V 5 2V 5 2V 5 5 2 01 02 D3 WITH PIP DISPLAYING COLORBARS 4 R2508 10ps 3300 R2193 X2101 1800 Me C2151 C2139 TAKEN WITH PIP ON AND 3 3uF DUE 02140 10pF R2170 DISPLAYING COLORBARS NC 022 R2192 NC R2196 C2142 3300 em 10M 022 10 5 7 16 18 1 506 82K 052E MUTE 4 1V R2013 10K D4 COL V OUT 4 1V 9 1V 2 4V 2 5V 5 5 38 FSC FCC VCO FILTER HORIZ DR 3 9V WITH PIP 62289 Gains DISPLAYING COLORBARS 10
40. comer of screen Adjust Position Control RV2103 to place PIP window 1 inch from left side of screen Place PIP window in lower right comer of screen Adjust Position Control RV2103 to place PIP window 1 inch from right side of screen PIP SUB COLOR SUB TINT Tune in a colorbar pattern on the PIP screen On main screen select a video input with no signal Position PIP screen in lower left comer of screen Connect an oscilloscope to TP47B Adjust Sub Color Con trol RV2 107 so that the PIP portion of the signal is 1 9V p p Tune in a picture on PIP window Adjust Sub Hue Control RV2106 to obtain proper skin tones PIP RGB PICTURE RGBP Tune in a colorbar Pattern Enter Service Adjustment Mode Select RGBP adjustment and adjust level to 00 Set Picture and Brightness to MINIMUM Adjust RGBP for proper colorbars in PIP window Save adjustment to memory PIP B Y Tune in a colorbar pattern Turn B Y Control RV2200 clockwise until PIP window turns solid blue and note position Turn RV2200 counterclockwise until PIP window colorbars lose blue and note position Set RV2200 to midpoint between the two positions PIP R Y Tune in a colorbar pattern Turn R Y Control RV2201 counter clockwise until PIP window turns solid red and note position Turn RV2201 clockwise until PIP window colorbars lose red and note position Set RV2201 to midpoint between the two positions SUB PICTURE Tune in a colorbar pattern on the PIP window
41. d 44 of Y C J IC IC301 V Sext 1 Transistor Q302 V Sext 2 Transitor Q303 and V Sext 3 Transistor Q304 If there is no horizontal sync Check the voltages waveforms and components associated with pins 41 and 45 of IC301 VIDEO Inject a signal at TP12 and check for video on the CRT If video is present Refer to the IF AGC section of this Troubleshooting guide If there is no video on the CRT check for a video waveform at pin 6 of Comb Filter CM1301 If video is missing at pm 6 of CM1301 Check the voltages waveforms and components associated with Buffer Transistors Q409 Q410 and AV Switch IC IC444 and CM1301 If video is present at pin 6 of CM1301 check for a video waveform at the emitter of Y Amp Transistor 4305 If the video is missing Check the voltages waveforms and components associated with 4305 Buffer Transistor 0416 and Y Switch IC IC402 If the waveform is present at the emitter of Q305 Check the voltages waveforms and components associated with pins 3 4 8 26 and 27 of Y C J IC IC301 Buffer Transistors Q310 Q313 Gamma Comp 1 Transistor Q315 and Equalizer Transistor Q314 Y Clamp Transistor Q317 and Gamma Comp 2 Transistor Q316 If brightness is inadequate or cannot be controlled Check the voltages waveforms and components associated with pin 5 of V901 CHROMA Check for a chroma waveform at pm 5 of Y C J IC 1 301 If the waveform is missi
42. gt R502 R503 56K 1500 1500 2SA937R 2W 2W P TOFACT STANDARD NOTATION HEMATI Q308 HORIZ DR MUTE 27 20V P HOTOFAC OTATION SCHEMATIC 9240 C Howard W Sams amp Co 1991 TELEVISION SCF SEE 62 SEE 61 SEE 0106 101 CONTROL 1 101 CONTROL DAT SW PAGE PAGE 3F PAGE SEE PIN 63 1 101 CONTROL PAGE 3F SEE 02244 YS BUFFER SEE PIN 60 Rees 1002 PAGE 4D 1 101 CONTROL c E AGE SEE 25 3052 T 02105 RED OUT Y OUT eS gg osii SEE COLLECTOR Q2106 aN p MR RD6 2ESB2 Mop esti il lt TAKEN WITH PIP ON 6 4 AND DISPLAY COLORBARS 4 9V V V IV X D OSC BLK BIN GIN RIN BL HOLD FILTER ABL X TAL APC V BLK 4 1 JN 6 0V By 6 1 D 8 27 7 6 28 W 46 R313 R364 2SC3311 14 C310 D303 1000 R312 220 0312 1 22uF 155119 R368 10 in 35 T C308 gh 220pF T 2 7N LGe 4 E3 Naser Gre R357 RD18ESB1 39pF 47K 9 2V A NPO 3 D515 2SC3311AR 2SA1309AR 9 2V A 156119 0505 BUFFER 0504 PROTECT R545 47 0514 R547 1127 R394 s 155119 100 iiiv 41K 16 C ma R393 R544 4700 SEE PIN 40 47K in a prm 16 R542 C536 16 A 52 15 0V 10 15 0V 1 52 C516 C525 a 2uF 850 470pF 200V 500V C517 52 HORIZ CENTER is 4 D504 C518 56501 1515 HE 115 250 SPARK
43. in 34 of IC2 103 Cheek the voltages waveforms and components associated with V Buffer 1 Transistor Q2245 V Buffer 2 Transistor 02123 Buffer Transistor Q4 13 and AV SW IC IC444 If video is present at pin 34 of IC2103 check for a video waveform at pin 16 of A D Conv IC IC2206 If the waveform is missing Check the voltages waveforms and components associated with Y Out Transistor Q2139 Y Buffer 2 Transistor Q2102 Y Amp Transistor Q2 10 1 Y Buffer 1 Transistor 02116 and pins 14 21 23 25 30 32 33 of Y C J IC 1C2103 If waveform is present at pin 16 of IC2206 check for the proper wa veform at pm 4 of Y D A Conv IC IC2201 If the waveform is missing at at pin 4 of IC2201 Check the voltages waveforms and components associated with IC2201 pins 1 46thru 5 1 and 54 of IC2204 Cheek for the proper waveform at the emitter of YS Buffer Trans mitter 42244 TROUBLESHOOTING continued If the wave form is missing at the emitter of Q2244 Check the voltages waveforms and components associated with 42244 pins 3 thru 6 of IC2 104 and pin 3 1 of IC2204 If the waveform is present at pin 4 of IC2201 Check the voltages waveforms and components associated with Y Buffer Transistor 42202 ANOS PIP CHROMA Check for the waveforms at pins 20 and 22 of Y C J IC 1 2103 If the waveforms are missing Check the voltages waveforms and components associated with pins 16 thru 2
44. izontal Static Control CRT NECK ASSEMBLY RV702 to converge the Red and Blue dots over the Green dots horizontally at the center of the screen Rotate the Vertical Static Magnets to converge the Red and Blue dots over the Green dots ver tically at the center of the screen NOTE Some versions use a BMC magnet To adjust the BMC magnet slide it in and out to correct for insufficient horizontal static convergence rotate the BMC magnet to correct for insufficient vertical static convergence Tune in a cross hatch pattern and loosen the Delection Yoke L550 screw Remove the rubber wedges between the Deflection Yoke and the CRT Tilt the Deflection Yoke up or down to converge the vertical lines at top and bottom of screen and the horizontal lines at the right and left sides of the screen Tilt the Deflection Yoke right or left to converge the vertical lines at the right and left sides of the screen and the hori zontal lines at the top and bottom of the screen Repeat convergence procedure if necessary to obtain best overall convergence Apply adhesive to wedges and carefully replace on CRT PURITY MAGNET V STAT MAGNET BMC MAGNET SAFETY RELATED ADJUSTMENTS R559 CONFIRMATION METHOD HOLD DOWN CONFIRMATION AND READJ USTMENTS The following adjustments should always be performed when replac ing the following components 501 4608 4607 R629 R628 R627 R559 Preparation Before Confirmation 1 Remove 675 on the
45. l Flm 4700 5 2W NF Mtl Flm 4700 5 2W NF Mtl Fim 3 3 5 3W NF Mtl Fim 475 1 4W NF Cbn flm 1500 596 2W NF Mtl Flm 1800 5 2W NF Mtl Flm 565 NF Mtl Fim 565 3W NF Mtl Fim 1 10 2W NF WW 47 10 2W WW 560 5 1 4W Cbn Flm 68k 5 2W NF Mtl Flm 68K 5 2W NF Mtl Flm 68K 595 2W NF Mtl Elm 68k 5 2W NF Mtl 15 596 2W NF Mil Elm 18 5 2W NF Mtl Flm 470 595 1 4W Cbn Elm 82K 596 1W NF Mtl Flm 22 5 IW NF Mtl Flm 22 596 IV NF Mtl Flm 1200 5 2W NF Mtl Flm 4 75 1 4W NF Cbn Flm 68K 5 1 4W NF Cbn Flm 120 596 1 4w NF Cbn Flm 56 596 3W NF Mtl Flm 1 5 596 3W NF Mtl Flm 8200 596 3W NF Mtl Flm 8200 5 3W NF Mtl Flm 8200 596 3W NF Mtl Flm 220 595 1 4W NF Cbn Flm 220 596 1 4W NF Cbn 220 5 1 4W NF Cbn Film 47K 5 2W NF Mtl Fim 10K 5 1 4W NF Cbn Fim 10K 5 1 4W NF Cbn Fim 10K 596 1 4W NF Cbn Flm 10K 5 1 4W NF Cbn Flm 47K 5 1W NF Mtl Flm 10K 596 1 4W NF Cbn Flm 1800 596 1 10W Mtl Chp 1800 596 1 10W Mtl Chp Mfr Part No 1 202 723 91 1 205 900 11 1 216 444 11 1 216 425 11 1 207 645 00 1 215 417 00 1 215 477 00 1 215 896 00 1 215 896 00 1 216 395 51 1 249 443 11 1 215 893 11 1 216 458 11 1 216 473 11 1 216 473 11 1 207 612 00 1 207 616 00 1 249 414 11 1 215 903 11 1 215 903 11 1 215 903 11 1 215 903 11 1 215 881 11 1 216 446 00 1 249 413 11 1 216 444 11 1 216 341 11 1 216 341 11 1 216 457 00 1 249 389 11 1 249 439 11 1 249 406 11 1 216 473 11 1 216 391 11 1 216 486 51 1 216 486 51 1
46. ng Check the voltages waveforms and components associated with Buffer Transistor Q417 C Switch IC IC403 and pin 4 of Comb Filter CM1301 If chroma waveform is present at pin 5 of IC30 1 cheek for the prop er waveforms at pins 20 22 24 of IC301 If these waveforms are missing Check the voltages waveforms and components associated with pins 5 6 7 19 thru 25 of IC301 Check the 3 58MHz oscillator at pin 7 of IC301 If the proper wavforms are present at pins 20 22 24 01 Refer to the Raster section of this Troubleshooting guide RASTER Check the CRT and CRT voltages Cheek the voltages waveforms and components associated with Buffer Transistor Q711 SW 1 Transistor 0710 and SW 2 Transistor 4712 If there is no Red Cheek the voltages waveforms and components associated with pin 20 of Y C J IC 1C301 Red Output Transistor 0708 Video Amp Transistor 0709 and Red Det Transistors Q707 Q7 16 If there is no Green Check the voltages waveforms and components associated with pin 22 of IC301 Green Output Transistor Q704 Video Amp Transistor 0705 and Green Det Transistors 4706 Q715 If there is no Blue Check the voltages waveforms and components associated with pm 24 of IC301 Blue Output Transistor Q701 Video Amp Transistor Q702 and Blue 1K Det Transistors Q703 Q714 If the raster has a keystone shape Check the Deflection Yoke L550
47. o cancel sleep timer press Sleep button until Sleep Off is indicated or turn set off Note This set employs digital customer controls Use the Remote Commander to accomplish digital adjustments Unless specified all adjustments are accomplished with controls in reset position DIGITAL ADJ USTMENT PROCEDURES Entering Service Adjustment Mode 1 Tune in a picture and turn set off 2 Insert a small tuning tool in service mode access hole located to the left of the right speaker connections on the back of the set While depressing Service Button SW900 turn set on Making Adjustments l Enter service mode 2 Select adjustment by pressing the the 1 and 4 buttons 3 Make changes on selected adjustment by pressing the 3 and 6 button Saving Adjustments to Memory l Adjustments must be saved to memory 2 To save adjustment press the Mute button and then the Enter button Memory Write Confirmation 1 Disconnect AC plug from outlet 2 Plug set in and enter Service Adjustment Mode 3 Select adjustment and confirm that setting was saved to memory Exiting Service Adjustment Mode l Turn set off and then back on Adjustments Required When Replacing IC s 1 02 VSOM AFC REF ROFF GOFF BOFF ABLM TEST DRGB 2 1 251 MPX FILO DEEM STEV SAPV PILO SEP VD LVOL RVOL 3 IC101 DISP 4 01 VFRE VPOS VSIV VLIN VSCO HPOS HSIZ PAMP CPIN PPHA VCOM GAMP BAMP GCUT
48. place IC653 and 675 Repeat above steps Courtesy of Manufacturer D1 2 D51 D103 D252 D300 D303 D304 D305 D308 D407 D500 D501 D502 D503 D504 5 D506 D509 D510 D517 D519 D531 D540 D563 D601 D602 D603 D604 D605 D606 D621 D622 D623 D624 D625 No CP110 11 D104 D109 0250 51 0301 2 D306 7 D310 11 D408 9 D420 21 0514 15 D520 21 Select replacement for best results Type No RD6 2EB SEL1222R D SEL1222R C 155119 1SV113 155119 RD6 2ES B2 RD12ES B2 195119 RD5 6ES B2 155119 RD9 1ES B2 RDI8ES B1 1SS119 RD18ES B2 RD6 2ES B2 RD10ES B2 RD5 6ES B2 155119 0056 RS3FS U05G RU30A U05G RS3FS 1SS119 U05G 1SS119 RGP02 17 RU3AM EGP20G EL1Z RD24ES B1 1SS119 RBV 406H 51 10 5 51 40 GP08D U05G 1SS119 1SS119 RD33ES B2 1SS119 EU2A RU 1P RU4AM RU4AM T3 RU4DS ERB93 02 For SAFETY use only equivalent replacement part 11 Package contains three zeners 8 sees SEMICONDUCTORS Mfr Part No 8 719 311 89 8 719 911 19 8 719 974 81 8 719 911 19 8 719 109 93 8 719 110 31 8 719 911 19 8 719 109 89 8 719 911 19 8 719 110 13 8 719 110 48 8 719 911 19 8 719 110 49 8 719 109 93 8 719 110 17 8 719 109 89 8 719 911 19 8 719 911 55 8 719 312 71 8 719 911 55 8 719 312 72 8 719 911 55 8 719 312 71 8 719 91
49. t Return R629 to the circuit Note Care should be taken in defeating the high voltage shutdown circuit as this may cause excessive X radiation and damage the CRT T500 and associated components Monitor the high voltage and troubleshoot HORIZONTAL Determine if the TV is in shutdown Refer to the High Voltage Shutdown section of this Troubleshooting guide If the TV is not in shutdown inject a horizontal signal at the base of the Horizontal Output Transistor Q502 If horizontal deflection is now present Check the voltages waveforms and components associated with pins 37 39 41 and 45 of Y C J 1 301 and Horizontal Drive Transistor Q501 If there is no horizontal sweep Check the voltages waveforms and components associated with Q502 and Horizontal Output Transformer T500 and check components associated with Diodes DS 17 D5 19 D520 D521 and D531 for defects The high voltage rectifier is part of T500 and if defective will effect the performance of the horizontal circuits If the horizontal oscillator is off frequency Check the voltages waveforms and components associated with AFC DET Transistor Q307 and Buffer Transistor 0306 Horizontal linearity foldover problems may be caused by tors C506 C507 and C509 beiig defective VERTICAL Inject a vertical drive signal at pin 3 1 of Y C J IC IC301 If vertical deflection is now present Check the voltages
50. waveforms and components associated with pins 29 thru34 38 and 44 of IC301 If there is still no vertical deflection Check the voltages waveforms and components associated with Vert Out IC IC500 Vertical linearity or foldover problems may be caused by pincush ion vertical feedback and bias circuits Check the voltages waveforms and components associated with Pin Correction IC IC531 and Pin Out Transistor 4530 Also check Electrolytics C328 C538 C540 C562 C563 and C566 for defects IF AGC Inject a video signal at the IF input and check for video on the CRT If video is present Check the tuner tuner control and tuner AFC circuits TROUBLESHOOTING continued If there is no video on the CRT check for a video waveform at TP12 If video is present at 12 Refer to the Video section of this Troubleshooting guide If there is no video at TP12 Check the voltages waveforms and components associated with IF Module 1F201 and AGC Mute Transistor 0102 A defective AGC circuit can cause an overloaded picture excessive snow or loss of audio and video See the AGC Voltage Chart for AGC voltages with signal AGC Voltage Chart IF201 pm 1 5 3V SYNC If there is no vertical or horizontal sync Check the voltages waveforms and components associated with Y Buffer Transistor 4301 If there is no vertical sync Check the voltages waveforms and components associated with pins 38 an
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