Memorex MT1130C Service Manual

THIS SERVICE MANUAL IS FOR MT1130C SUFFIX A , B , C AND D CRT USAGE SUFFIX A SUFFIX B SUFFIX C SUFFIX D V451 5721-014ST37N (37GDA86X) 5721-37CN030T (370KSB22(SYB)) 5721-026TT37N (A34JFQ90X) 5721-030ZT37N (A34JXV70X) DY501 4993-117 4993-052 4993-110 4993-124 REMOTE SENSOR VOLUME CHANNEL POWER DOWN UP DOWN UP

- 3 - ADJUSTMENT MODE The following adjustment items can be performed from menus by Remote Control as shown below : NOTE: The button combination and position on the Remote Control to select the adjustment items is given on page 4. 1. Press the SHIFT + ADJ. MODE buttons on the Remote Control simultaneously to bring up the adjustment mode menu screens shown below. 2. From the menu screen, press the + or - button on the Remote Control to select the item to be adjusted. 3. Press the MENU button on the Remote Control to enter adjustment mode for the item selected, and the display shown below appears : Example: 4. Use the + or - button on the Remote Control to adjust the data for the item selected. 5. When adjustment has been completed, press the SHIFT + ADJ. MODE buttons on the Remote Control simultaneously to return to the main menu. COLOR 32 RED CUTOFF 127 OR

- 4 - METHOD OF RECALL V-BLOCK PASS NUMBER If user forgets the V-Block Pass Number, call recall by the Service Remote Control or User Remote Control. 1. If use the Service Remote Control, at the Pass Number entry menu, while holding down [SHIFT] button and press the [Q.REV] button repeatedly four times. 2. If use the User Remote Control, at the Pass Number entry menu, while holding down [VOLUME DOWN] button on the TV set and press number [3] button on the remote control repeatedly four times. 3. The blinking “?” will be replaced with “!” after each press. 4. Release the [SHIFT] button or [VOLUME DOWN] button and then press [MENU] button. “V- BLOCK SET” menu will be appearing on-screen with the user setting pass number. VIDEO VIDEO

- 5 - INTEGRATED CIRCUITS IC101 TA87C-B6 Microcomputer IC501 AN5512 Vertical Deflection Output IC102 CAT24CO4 EEPROM IC601 STR30130 AVR IC301 TA1268N IF/Video/Chroma/Deflection IC671 NJ7805LD Voltage Regulator and Reset IC311 NJ7809FA Voltage Regulator TRANSISTORS Q101 DTC143ZS Vertical Synchronizing Q452 2SC1473A(R) Blue Color Driver Q102 2SC945(P) Horizontal Synchronizing Q453 2SC1473A(R) Green Color Driver Q173 2SC945(P) SD Signal Buffer Q551 2SC1473A(R) Horizontal Driver Q301 2SC945(P) SIF Signal Buffer Q552 2SD 1 877 Horizontal Driver Q302 2SA733(P) Video Buffer Amplifier Q601 2SC945(P) Power On/Off Relay Driver Q303 2SC945(P) Video Out Q801 2SC945(P) Audio Amplifier Q351 DTC143ZS Service Mode Switching Q802 2SA950(0) Audio Amplifier Q451 2SC1473A(R) Red Color Driver Q803 2SC2120(0) Audio Amplifier PICTURE TUBE V451 37GDA86X CRT (SUFFIX A) V451 A34JFQ90X CRT (SUFFIX C) V451 370KSB22(SYB) CRT (SUFFIX B) V451 A34JXV70X CRT (SUFFIX D) CHASSIS REMOVAL 1. Remove 4 screws (183) from Cabinet Back (AB) and remove Cabinet Back from rear. 2. Discharge anode lead at CRT chassis ground through a 10kohm resistor. 3. Disconnect anode lead from CRT. 4. Disconnect CRT Socket P.C. board (PCB-2) from CRT(V451). 5. Disconnect 3 connectors (CN501 (DY501), CN601 (L601) and LCN801) from Main P.C. board (PCB-1). 6. When replacing chassis, reverse the above procedure making certain that all leads are fastened in their original places. CRT REMOVAL CAUTION: Wear shatterproof goggles and exercise proper handling precautions when working around high vacuum picture tubes. 1. Remove chassis per instructions under CHASSIS REMOVAL. 2. Remove Convergence Magnet Assembly (MG451) from neck of CRT. 3. Remove Deflection Yoke (DY501) from neck of CRT 4. Remove 3 wedges (158) from CRT 5. Remove Degaussing Coil (L601) from CRT 6. Remove braid wire (331) and spring (157) from CRT 7. Lay cabinet face down on some protective material. 8. Remove 4 CRT mounting screws (174). 9. Remove CRT from Cabinet Front (AA). 10. To install new CRT, reverse above procedure. 11. Perform purity and convergence adjustments.

- 6 - CAUTION: Use an isolation transformer when performing any service on this chassis. SHUTDOWN CIRCUIT: When the high voltage rises, there are simultaneous voltage increase developed at terminal 6 of the Horizontal Output Transformer ( T671 ) and applied to pin 29 of IC301. If excessive high voltage is produced, the increased voltage developed exceeds the rating of zener diode D552 causing the Horizontal Oscillator to stop functioning and the high voltage system to shut down. AFT ( AUTOMATIC FINE TUNING ) ADJUSTMENT 1. Connect TV Test Pattern Generator (NTSC signal, Monoscope signal, 70dBu, channel 2) to EXT. Antenna Terminal (TE1) through TV Channel Signal Generator. 2. Connect wire (+) of DC Digital Voltmeter to TP6 and wire (-) to TP4. (Figure 1) 3. Adjust T202 so that the DC Digital Voltmeter reading is 2.0V ± 0.1V. FIG. 1 SUB COLOR AND SUB TINT ADJUSTMENT 1. Connect TV Test Pattern Generator (NTSC signal, Color Bar signal, 70dB u , channel 6) to EXT. Antenna Terminal (TE1) through TV Channel Signal Generator. 2. Connect positive lead of Oscilloscope to TP14 and negative lead to TP10. 3. Set Tint control to center position. (by Remote Control). ( NOTE: For steps 4, 5 and 6 below, refer to page 3 for Adjustment By Remote Control Method). 4. Go to Adjustment Mode (1) by remote control. 5. Select SUB COLOR and SUB TINT from Adjustment Mode (1) menu screen. 6. Adjust SUB COLOR and SUB TINT level (by using + or - button on remote control) so that waveform 1 & 4 (for SUB COLOR) and waveform 2 & 3 (for SUB TINT) is the same as shown in Figure 2. FIG. 2

SOUND IF ADJUSTMENT 1. Connect TV Test Pattern Generator (NTSC signal, 70dB u , channel 2) to EXT. Antenna Terminal (TE1) through TV Channel Signal Generator. (Standard modulation is 400Hz at 25kHz deviation for sound signal. 2. Connect positive lead of DC Digital Voltmeter to TP7 and negative lead to TP9. 3. Adjust T203 so that the DC Digital Voltmeter reading is 4.0V. COLOR PURITY ADJUSTMENT For best results, it is recommended that the purity adjustment be made in the final receiver location. If the receiver will be moved, perform this adjustment with it facing East. The receiver must have been operating 15 minutes prior to this procedure and the face plate of the CRT must be at room temperature. The following procedure is recommended while using a Dot/Bar Generator. 1. Check correct location of all neck components. ( Refer to Figure 3 ) 2. Rough -in the static convergence at the center of the CRT, as explained in the static convergence procedure. 3. Set the Contrast control to minimum position and Brightness control as far maximum as possible without causing the picture to “bloom”. 4. Apply green raster signal from Dot/Bar Generator to receiver. 5. Loosen the deflection yoke clamp screw and pull the deflection yoke toward the rear of the CRT. 6. Begin the following adjustment with the tabs on the round purity magnet rings set together. Slowly separate the two tabs while at the same time rotating them to adjust for a uniform green vertical band at the center of the CRT screen. 7. Carefully slide the deflection yoke forward to achieve green purity (Uniform green screen). NOTE: Center purity is obtained by adjusting the tabs on the round purity magnet rings. Outer edge purity is obtained by sliding the deflection yoke forward. 8. Check for red and blue field purity by applying red and blue raster signal alternately from Dot/Bar Generator to receiver. Repeat steps 2 through 7, if required. 9. Tighten deflection yoke clamp screw. 10. Perform BLACK AND WHITE ADJUSTMENT procedure. ( CW : clockwise, CCW : counterclockwise ) FIG. 3

STATIC CONVERGENCE ADJUSTMENT ( Refer to Figure 3 and 4 ) IMPORTANT: Before proceeding, make sure the location of the convergence magnet assembly on the neck of the CRT is as shown in Figure 3. The rear edge of this assembly must be positioned 65 mm from the tip of the CRT base. If not properly positioned, convergence adjustment may be difficult, if not impossible. 1. Apply dot or crosshatch pattern from Dot/Bar Generator to receiver. Reduce setting of Brightness and/or Contrast controls to eliminate any blooming in pattern. 2. Observe the blue and red pattern appearing on the CRT screen. Locate the 4 pole magnet rings and separate their adjusting tabs approximately the width of one tab. 3. Now rotate this pair of magnet rings as a unit without re-adjusting the spacing between the tabs. This will minimize the separation between the blue and red dots (lines). 4. If the blue and red dots are not completely converged at this point, readjust the spacing between the two tabs to complete convergence of the blue and red dots (lines), thus producing magenta dots (lines). 5. If necessary, repeat step 2, 3 and 4 until proper convergence is achieved. 6. Observe the magenta (B/R) and green pattern now appearing on the CRT screen. 7. Locate the 6 pole magnet rings and separate their adjusting tabs approximately the width of one tab. 8. Rotate this pair of magnet rings as a unit without re-adjusting the spacing between the tabs. This will minimize the separation between the magenta (B/R) and green dots ( lines). 9. If the magenta and green dots (lines) are not completely converged at these points, readjust the spacing between the two tabs to complete convergence of the magenta and green dots (lines). 10. If necessary, repeat step 7, 8 and 9 until proper convergence is obtained. To prevent accidental mis-adjustment of the magnets, apply a stripe of paint across all six rings and onto the neck of the CRT. FIG. 4 DYNAMIC CONVERGENCE ADJUSTMENT ( Refer to Figure 5) Dynamic convergence (convergence of the three edges of the CRT screen) is accomplished by proper insertion and positioning of three rubber wedges between the edges of the deflection yoke and funnel of the CRT. This is accomplished in the following manner. 1. Turn the receiver ON and allow it to warm up for 15 minutes. 2. Apply crosshatch pattern from Dot/Bar Generator to receiver. Observe spacing between lines around edges of CRT screen. 3. For the misconvergence shown in Figure 5 ( A ), tilt the deflection yoke down and insert wedge A between deflection yoke and CRT. 4. For the misconvergence shown in Figure 5 ( B ), tilt the deflection yoke up and insert wedge B between deflection yoke and CRT. 5. For the misconvergence shown in Figure 5 ( C ), tilt left side of the deflection yoke and slightly insert wedge C between deflection yoke and CRT. Then, deeply insert wedges A and B between deflection yoke and CRT. 6. For the misconvergence shown in Figure 5 ( D ), tilt right side of the deflection yoke and deeply insert wedge C between deflection yoke and CRT. Then, slightly insert and/or extract wedges A and B between deflection yoke and CRT. 7. Alternately change spacing between and depth of insertion of the three wedges until proper dynamic convergence is obtained. 8. Use a strong adhesive tape to firmly secure each of the three rubber wedges to the funnel of the CRT.

FOCUS ADJUSTMENT Adjust focus control, located on the Horizontal Output Transformer (T671), for maximum overall definition and fine picture detail with Brightness and Contrast controls set at normal viewing levels. BLACK AND WHITE ADJUSTMENT (CUTOFF / WHITE BALANCE) The purpose of this procedure is to adjust the bias applied to the color picture tube for reproducing a quality monochrome picture at all brightness levels and also to achieve maximum usable brightness. Confirm that proper purity and AGC adjustments have been completed before starting this adjustment. 1. Connect the TV test pattern generator (Monoscope pattern) to the EXT. antenna terminal via TV VHF/UHF signal generator (NTSC signal, 70dB u). 2. Select Cutoff Mode by remote control, (refer to page 4 for remote control key combination and position) and CUT OFF will be displayed on top-right screen for about 3 seconds. At the same time the data readings for Cutoff and Gain in Adjustment Mode (2) will become as follows: R CUTOFF: 50, G CUTOFF: 50, B CUTOFF: 50, G GAIN: 127, B GAIN: 127 3. Select Service Mode by remote control, (refer to page 4 for remote control key combination and position) and TV screen becomes horizontal line. 4. Turn the Screen control (located under the flyback transformer) clockwise until any blue, green or red color line appears. 5. Check the color of the line which appeared first, then turn the Screen control (located under the flyback transformer) fully counterclockwise. 6. Adjust the cutoff level of the color which appeared first by remote control, (refer to page 4 for remote control key combination and position) so that voltage between TP16 and TP15 (blue), TP14 (green) or TP13 (red) is 20 ± 1V. 7. Turn the Screen control (located under the flyback transformer) clockwise so that the bright color line can just be seen. 8. Adjust cutoff levels other than the above by remote control, (refer to page 4 for remote control key combination and position) so that the line color is white. 9. Press again Service Mode key by remote control, (refer to page 4 for remote control key combination and position) to return to TV position. Monoscope pattern will appear on TV screen. 10. Adjust the contrast and brightness controls to make the picture dim. Adjust the Green and Blue Cutoff levels by remote control, (refer to page 4 for remote control key combination and position) so that the picture is white. 11. Adjust the contrast and brightness controls to make the picture bright. Adjust the Green and Blue Gain levels by remote control, (refer to page 4 for remote control key combination and position) so that the picture is white. 12. Repeat steps 10 and 11 so that the picture is white in both dim and bright conditions. Fig. 5 GREEN RED BLUE (A) RED GREEN BLUE WEDGE A DEFLECTION YOKE REAR VIEW GREEN BLUE RED GREEN RED BLUE BLUE GREEN RED RED GREEN BLUE (C) WEDGE A WEDGE B WEDGE C DEFLECTION YOKE REAR VIEW GREEN BLUE RED (B) BLUE GREEN RED WEDGE B DEFLECTION YOKE REAR VIEW GREEN RED BLUE GREEN BLUE RED RED GREEN BLUE BLUE GREEN RED (D) WEDGE A WEDGE B WEDGE C DEFLECTION YOKE REAR VIEW

HORIZONTAL PHASE ADJUSTMENT 1. Connect TV Test pattern Generator (NTSC signal 70dB u, Monoscope Pattern) to Antenna T erminal (TE) through TV Channel Generator. (NOTE: For steps 2, 3 and 4 below, refer to page 3 for Adjustment By Remote Control Method). 2. Go to Adjustment Mode (2) by remote control. 3. Select H. PHASE from Adjustment Mode (2) menu screen. 4. Adjust H. PHASE level (by using + or - button on remote control) so that horizontal reading of test pattern becomes the same value. VERTICAL PHASE ADJUSTMENT 1. Connect TV Test pattern Generator (NTSC signal 70dB u, Monoscope Pattern) to Antenna Terminal (TE) through TV Channel Generator. (NOTE: For steps 2, 3 and 4 below, refer to page 3 for Adjustment By Remote Control Method). 2. Go to Adjustment Mode (2) by remote control. 3. Select V. PHASE from Adjustment Mode (2) menu screen. 4. Adjust V. PHASE level (by using + or - button on remote control) so that vertical reading of test pattern becomes the same value. VERTICAL AMPLITUDE ADJUSTMENT 1. Connect TV Test pattern Generator (NTSC signal 70dB u, Monoscope Pattern) to Antenna Terminal (TE) through TV Channel Generator. (NOTE: For steps 2, 3 and 4 below, refer to page 3 for Adjustment By Remote Control Method). 2. Go to Adjustment Mode (2) by remote control. 3. Select V. AMP from Adjustment Mode (2) menu screen. 4. Adjust V. AMP level (by using + or - button on remote control) so that picture fills the picture opening from top to bottom and is proportionate to the width. RF AGC ADJUSTMENT 1. Connect TV Channel Signal Generator to Antenna Terminal (TE). 2. Connect positive lead of DC Digital Voltmeter to TP5 and negative lead of DC Digital Voltmeter to TP4. 3. Adjust level of TV Channel signal Generator so that the output level is 57dB u. (Monoscope Pattern) (NOTE: For steps 4, 5 and 6 below, refer to page 3 for Adjustment By Remote Control Method). 4. Go to Adjustment Mode (2) by remote control. 5. Select RF AGC from Adjustment Mode (2) menu screen. 6. Adjust RF AGC level (by using + or - button on remote control) so that the DC Digital Voltmeter reading is 6.0V ± 0.2V. SUB BRIGHTNESS ADJUSTMENT 1. Connect TV Test Pattern Generator (NTSC signal, Color Bar Signal, 70dB u) to EXT. Antenna Terminal through TV Channel Signal Generator. (NOTE: For steps 3, 4 and 5 below, refer to page 3 for Adjustment By Remote Control Method). Go to Adjustment Mode (1) by remote control. 3. Set the COLOR and CONTRAST of the TV set to minimum and the SUB CONTRAST and SUB BRIGHT to 4. Fig. 6 DIM LIGHT

- 12 - OPERATION CONDITION : TINT, BRIGHT and COLOR CONTROL……….. CENTER CONTRAST ………………………………………. MAXIMUM COLOR BAR SIGNAL IC101 TERMINAL No 1 2 3 4 5 6 7 8 9 10 Volt 4.9 0.0 0.0 0.0 5.0 5.0 5.0 0.0 0.0 0.6 TERMINAL No 11 12 13 14 15 16 17 18 19 20 Volt 0.0 0.0 5.0 5.0 5.0 2.3 0.0 0.0 0.6 0.7 TERMINAL No 21 22 23 24 25 26 27 28 29 30 Volt 0.0 0.0 0.0 0.0 0.0 3.9 4.7 4.9 4.9 0.0 TERMINAL No 31 32 33 34 35 36 37 38 39 40 Volt 2.1 2.3 5.0 0.0 5.0 4.5 3.1 2.0 0.0 0.7 TERMINAL No 41 42 Volt 0.7 5.0 IC102 TERMINAL No 1 2 3 4 5 6 7 8 Volt 0.0 0.0 0.0 0.0 2.0 3.1 0.0 5.0 IC301 TERMINAL No 1 2 3 4 5 6 7 8 9 10 Volt 0.0 3.8 3.0 0.0 4.6 0.0 2.0 0.7 9.0 4.4 TERMINAL No 11 12 13 14 15 16 17 18 19 20 Volt 6.3 4.8 0.0 0.0 4.8 4.8 4.8 3.3 2.6 2.5 TERMINAL No 21 22 23 24 25 26 27 28 29 30 Volt 2.3 0.8 5.1 5.2 5.6 8.3 3.0 2.0 2.1 1.0 TERMINAL No 31 32 33 34 35 36 37 38 39 40 Volt 0.7 1.2 6.9 5.4 0.0 2.8 3.2 3.1 3.0 6.3 TERMINAL No 41 42 43 44 45 46 47 48 49 50 Volt 3.1 4.9 4.7 2.4 2.0 9.0 4.0 9.0 8.4 8.2 TERMINAL No 51 52 53 54 55 56 Volt 0.0 0.0 2.8 5.2 5.8 0.0 IC311 TERMINAL No 1 2 3 Volt 12.1 0.0 9.0 IC501 TERMINAL No 1 2 3 4 5 6 7 8 9 Volt 0.0 12.5 0.0 24.2 13.7 0.7 -0.3 1.2 23.8 IC601 TERMINAL No 1 2 3 4 5 Volt 0.0 131.0 160.0 131.0 0.0 IC671 TERMINAL No 1 2 3 4 5 6 7 8 Volt 10.3 0.0 5.5 0.0 0.0 5.0 0.0 5.0 B E C B E C Volt Volt Volt Volt Volt Volt Q101 0.1 0.0 4.7 Q453 2.3 2.2 132.0 Q102 -0.7 0.0 3.9 Q551 0.3 0.0 126.0 Q173 -0.1 0.0 4.5 Q552 -0.2 0.0 - Q301 3.9 3.3 9.0 Q601 0.7 0.0 0.1 Q302 1.5 2.1 0.0 Q801 0.6 0.0 6.7 Q303 1.6 1.0 9.0 Q802 6.7 7.4 0.0 Q351 0.0 0.0 9.0 Q803 8.0 7.4 16.0 Q451 2.5 2.3 122.6 Q452 2.3 2.2 129.3

PCB2 CRT C107 100 /10V C108 0.022 ZF R101 4.7k C112 680pB C111 680pB C101 0.1 R105 1k R106 22k IC101 TMPA8700CPN U-COM C102 0.1 R102 4.7k R112 22k R110 22k TP6 C217 47p CH CF201 4.5MHz BPF L203 22uH C218 47p CH TP7 SIF R301 1.8k R220 1k C231 0.01 ZF R214 56k R307 330 R308 1k R305 3.3k D301 1S2473 R302 1.8k R303 1.8k 1/4W C391 1/50V R391 75k C303 0.1 MYL 1000p MYL R361 1k D303 1S2473 R335 68k 1/6W C304 0.01 R340 1M R570 390 R330 220k 1/6W Q302 2SA733 (P) C214 0.01 ZF L361 5.6uH C361 C213 4700p B FM DET SIF GND C221 0.01 ZF SF201 45.75MHz C210 0.01 ZF C208 0.47 /50V R350 470 Q351 DTC143ZS C206 1000p B C209 47 /16V X301 3.58MHz C322 0.47 /50V IC301 TA1268N T203 D312 1SS133 D308 1S2473 R319 220 R320 220 R321 220 R192 1k R191 1k R212 10k C211 4.7 /50V C220 2200p B C320 0.022 ZF R322 3.3k C341 0.1 /50V R G B R G B C342 0.1 /50V C343 0.1 /50V R343� 820 C346 100p B R351 220 C345 100p B C344� 100p B C381 0.01ZF R344 10k R341� 820 D555 3.3V C380 1/50V R381 820 1/2W R518 27k 1/6W C501 2.2 /50V C553 0.01 ZF D559 RD9R1ES2 C554 100 /16V R342 820 D309 1SS133 D310 1SS133 D311 1SS133 C552 2.2 /50V C319 10p CH R123 390 RF AGC PIF GND PIF VCC GND 3.3V H.VCC SIF VCC VCC 32fH VCO HC/D H-SEP. V-SEP. V. RAMP BUS AFC1 H-OUT X-RAY H.RAMP C212 4.7 50V T202 VCO R218 1k R306 330 CF301 4.5MHz TRAP Q301 2SC945 (P) C232 47 /16V C317 0.01 C318 47 /16V Q303 2SC945 (P) VIDEO TP8 C308 10 /50V C306 0.1 MYL C315 2.2 /50V D302 1SS133 H. VCC R329 5.6k R336 2.2k R555 15k C555 10 /50V R554 47k C556 10 /50V R328 2.2k C562 1 /50V D552 RD6R8ES2 D553 1SS133 R556 5.6k TP11 X-RAY R551 2.2k 1/4W C551 0.01 ZF X551 503KHz R331 180k 1/6W C305 1 /50V C331 0.01 C362 100p R362 39K GND TP9 AFT R116 1k R105� 1k R114 1k R113 10k X101 8MHz R119 1k 1/4W R120 1k L101 47uH R121 5.6k 1/4W BLK R122 5.6k 1/4W R123 5.6k 1/4W R124 5.6k 1/4W C103 4.7/50V C104 27p CH C105 27p CH C106 30p CH C109 8.2p CH 5V R142 1 k 1/4W R146 1 k C180 100p B C4 4.7 /50V R4 180k R151 1k 1/4W R152 1k 1/4W C7 330 /16V R1 220 1/4W C1 10 /50V C8 22 /50V D8 HZT33 R3 10k AGC R103 100 R104 100 SCL SDA BM BP BT IF TE 1 S105 VOL-DOWN S104 VOL-UP S103 CH-DOWN S102 CH-UP S101 POWER R131 3.3k R132 3.3k R133 5.6k R134 12k VOUT VCC GND C177 270p D306 1SS133 R177 33k R178 56k Q173 2SC945 (P) R180 68k 1/6W R179 18k 1/4W R176 10K 1/4w R181 33k WF-2 5V RX101 REMOTE SENSOR ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! R615 47 1/4W D606 1S2473 R674 1.8k 1W MTL IC671 NJ7805LD CN801 LCN801 SP801 8 OHM SPEAKER R801 470 C801 4.7 /50V C803 2200p D802 1SS133 Q801 2SC945 (P) Q802 2SA950 (O) R809 2.2 1/6W R808 1 1/6W C804 220 /16V R812 10 1/2W R810 2.2 C805 0.1 D801 1SS133 R806 150 R805 470 Q803 2SC2120 (O) C802 47 /16V R804 10k R807� 150 C806 1000 /16V R803 1k R802 10k ! ! ! ! B G R 42 41 40 39 38 36 35 37 1 2 3 4 5 7 6 34 32 33 8 9 11 10 30 31 12 29 27 28 25 26 24 22 23 13 14 16 15 17 18 19 21 20 VIDEO INPUT VIDEO INPUT VCC GND NC V-SYS V-BLOCK NC POWER IN ST/MONO SERVICE LANGUAGE TV/VIDEO NC MAIN/SAP VCHIP SEL KEY IN MENU COLOR ADJ MODE 3 OSD CONT 2 POWER AFC NC OSD CONT 1 GND SDA SCL H. SYNC REMOTE GND RESET XOUT XIN TEST OSC1 OSC2 VD-OSD HD-OSD BLK B G R TP5 AGC TP4 TU1 VHF/UHF/CATV TUNER GND TP3 IF 8 7 6 5 1 2 3 4 IC102 M24C02 VCC WC SCL SDA E0 E1 E2 VSS 5V 33V 130V RESET OUTPUT C682 2200 /6.3V C681 0.1 MYL C678 100� /25V VOUT ROUT VIN G CD F. BACK START 8 7 6 5 4 3 2 1 1 3 1 3 2 2 WF-1 C664 100 /16V R614 680 1/4W D607 1SS133 IC311 NJ7809FA VOLTAGE REGULATOR R558 330 Q551 2SC1473A (R) C683 0.01/400V R559 330 C557 680p /500V R561 3.3k 5W CEM IC601 STR30130 R607 4.7k C605 0.01 /250V KH C604 0.01 /250V KH Q601 2SC945 (P) C616 0.01 /250V R610 1.8k 5W CEM C602 0.01 /250V KH D603 1N4002E D602 1N4004E C611 1000 /25V R611 680 1/2W D605 RD12ES2 R604 12k 1/4W R605 330k 1/4W C608 22 /160V R606 47 1/4W C606 0.01 /250V C607 470 /200V R603 270 10W CEM R601 2.7 5W MTL D601 RS104 TH601 CN601 L601 DEGAUSSING RL601 RELAY FU601 4A /125V P1 AC120V 60HZ C614 0.01 /250V KH C601 0.1 /AC125V L602 FILTER Q552 2SD1877 C559 4300p 1.6kV C561 680p/2KV R562 0.5 1/2W C558� 560p /500V D681 1F4-E T552 WF-8 FB551 11V WF-9 OUT IN R613 4.7k 2W MTL R612 4.7k 2W MTL ! ! SAFETY CRITICAL DEVICE S A F E T Y C R I T I C A L C O M P O N E N T S THE DESIGN OF RECEIVER CONTAINS MANY CIRCUITS AND COMPONENTS INCLUDED SPECIFICALLY FOR SAFETY PURPOSES. FOR CONTINUED PROTECTION. NO CHANGES SHOULD BE MADE TO THE ORIGINAL DESIGN AND COMPONENTS SHOWN IN ON THE SCHEMATIC SHOULD BE REPLACED WITH EXACT FACTORY REPLACEMENT PARTS. THE USE OF UNAUTHORIZED SUBSTITUTE PARTS MAY CREATE A SHOCK FIRE X-RAY RADIATION OR OTHER HAZARD. SERVICE SHOULD BE PERFORMED BY QUALIFIED PERSONNEL ONLY. RELIABLE AND PERFORMANCE FOR CONTINUED RELIABILITY AND PERFORMANCE EXACT FACTORY REPLACEMENTS ARE RECOMMENDED FOR ALL OTHER PARTS REPLACED. IF A SUBSTITUTE MUST BE USED BE SURE ITS QUALITY AND SPECIFICATIONS ARE IDENTICAL TO THE ORIGINAL PART. 44 42 43 40 41 39 37 36 35 34 33 32 31 30 29 38 55 56 54 53 52 50 51 49 47 48 45 46 Q102 2SC945 (P) C129 100p B R137 15k Q101 DTC143ZS C126 560p B JL101A 5P R G B R G B JL101B 5P TP13 TP16 TP15 R454 2.7k 1/4W R462 1.5k 1/4W R460 1.5k 1/6W R461 330 1/6W JL102 JL102A WF-6 R334 120k 1/2W C674 10 /250V R675 1M R332 1k 1/4W C326 1 /250V D315 1SS133 C511 100 /25V C560 0.39 /200W R563 330 2W MTL C508 1000 /25V C673 3300p /400V R673 2.2 1/4W ! ! R671 2.2 1/4W D673 1F4-E C672 3300p /400V R672� 2.2 1W 160V C671 3300p /400V D672 1F4-E C676 1000 /25V C675 1000 /25V D671 1F4-E C609 33 /160V TP1 T671 HORIZONTAL OUTPUT 24V R509 1.5 1/4W R505 470 1/4W C507 0.047 MYL D561 1F4-E CN501 R333 120k 1/2W R463 3.3 1W CEM FUSE JL102B R459 330 1/6W R458 1.5k 1/4W R457 330 1/6W C451 470p B R471 220 C452 470p B R472 220 C453 470p B R473 220 C455 1000p /500V C454 1000p /2kV R456 2.7k 1/4W SU451 V451 CRT R451 15k 1W MTL R452 15k 1W MTL R453 15k 1W MTL R455 2.7k 1/4W TP14 Q451 1473A (R) RED Q452 1473A (R) BLUE Q453 1473A (R) GREEN JL101 9V 9V TP10 GND C127 1000p B R136 100k R126 22k R127 270k 1/4W R129 10k R128 2.2k 1/6W SCHEMATIC DIAGRAM 9 8 7 6 5 3 1 4 4551-2011602D VERTICAL DY501 DEFLECTION YOKE HORIZONTAL DRIVER STAGE IC501 AN5512 VERTICAL DEFLECTION OUTPUT C504 470p B C512 100p B C503 0.033 MYL R501 1k R557 1k C130 100p D554 1SS133 R510 5.6k R519 56k 1/6W C510 3.3 /50V R507 56k R508 33k C509 2.2 /50V L.L R504 15k C505 0.1 MYL D501 1N4002E C506 100/25V R503 100 1/4W WF-5 WF-7 WF-4 WF-3 OUTPUT STAGE FLYBACK GENERATOR PULSE SHAPER 3 4 9 8 7 2 5 1 6 9 6 5 7 4 2 8 G F S 1 3 HV 3 1 2 1 3 4 6 15V 9V 1 2 4 3 1 2 3 4 5 V ERROR RESET PROTECT LIMIT LOCK DET VCO Q DET 1 DET BPF CLAMP 3.58 TRAP BLACK STRETING WPS DC REST SMOOTH CONTRAST SHARP Y-DL LPF WPL BRIGHT CUTOFF TINT KILL ANALOG RGB AFT ACC APC SW VCXO LOCK DET COLOR DEMO MATRIX VC/D AFC2 1 2 3 4 5 6 13 7 8 9 11 10 12 14 15 22 23 24 25 26 27 28 16 17 18 19 21 20 90 16 ! SCHEMATIC DIAGRAM NOTES: 1. ALL RESISTANCE VALUES ARE IN . k = 1000 . M = 1000k . 2. THE WATTAGE OF RESISTORS ARE 1/8W UNLESS OTHERWISE NOTED. 3. ALL CAPACITANCE VALUES ARE IN uF UNLESS OTFHERWISE NOTED. p = pF = u u F. 4.� SAFETY REQUIREMENTS COMPONENTS IN ACCORDANCE WITH � PRESENT SAFETY REGULATIONS. THESE COMPONENTS. MOST � ONLY BE REPLACED BY ORIGINAL PARTS. UHV/VHF 75 L301 15 uH TP2