User manual SANYO 28RN2F SERVICE MANUAL

[. . . ] Components indicated by a mark /!\ in this circuit diagram show components whose values have special significance to product safety. It is particularly recommended that only parts specified on the part service manual be used for components replacement pointed out by the mark. PRECAUZIONE DI SERVIZIO L'area inclusa in questa linea ( ) è collegata direttamente con la tensione della rete CA quando si serve l'area collegare un trasformatore isolante tra il ricevitore TV e la linea CA per eliminare il pericolo di scossa elettrica. NOTIZIE SULLA SICUREZZA DI FUNZIONAMENTO Ogni sotituzione di componenti va fatta tenendo conto della sicurezza di funzionamento. I componenti indicati sollo schema con il simbolo /!\ hanno particolare importanza per il sicuro funzionamento del TV. [. . . ] Waveforms were taken by using a wide band oscilloscope and a low capacity probe. Part No. SKP20190 (SHEET 1/2) K1002 J1EK1745:J11B0490N 1 2 3 4 5 6 7 8 9 11 10 12 13 14 15 16 17 18 19 21 20 L1022 Z21B0040N SERVICE REF NO: C21ES56NF-04 90Vp-p 64µs 100Vp-p 64µs SERVICE REF NO: C21ES56NF-07 ASSY, CRT EB4 STEREO MK2 1AA0B10H03500 Q701 2SC2688'1' (K:L:M) :2SC2621 (DRA:ERA) <B-BIAS> 90Vp-p 64µs 100Vp-p 64µs ASSY, PWB, CRT F2RC 1AA0B10E24500 L2601 Q2601 R2604 L2C1 2SC2688'1' B-OUT 2SJ12K 331KN 134. 3V (K:L:M) :2SC2621 (DRA:ERA) 2. 3V B-OUT R704 2SJ12K L1023 L2B9 100KN R1021 1/10GJ 560 C1021 KK1000 BA L1024 L2B9 100KN R1023 1/10GJ 560 C1025 KK1000 BA L1025 L2B9 100KN R1022 1/10 GJ2. 2K C1023 CJ100CA L1026 L2B9 100KN R1024 1/10 GJ2. 2K C1027 CJ100CA SC2 KL J10EA020N 2 R1025 1/10 GJ39K R1027 75 R1028 75 R1029 150 R1026 1/10 GJ33K D1024 MTZJ11C :UZ-11BSC C1029 16EM 10 SP901 VS003PGA :VS017PGB 134. 3V L2601 L2C1 331KN <B-DRIVE> R2603 DJ 1K <B-DRIVE> 2. 3V IC001-1 0HA0016--11 0V 14. 0V B2 25V <B-BIAS> 1. 8V C021 35EM 1000 C010 63GK0. 22V :HJ0. 22G K001 J12B04900 :J12B05400 C012 16EM 1000 R012 1/2 DJ 150 C017 16PM10D JWX1 JWX2 R2605 1/2DJ 3. 3K C2601 KK560 VR702 R3D8102NJ <B-1K> 1. 8V A101 C030 KX 1 KZ 0. 01FA VR2602 R3D8102NJ C1022 16EM 10 C1026 16EM 10 C1024 16EM 10S C1028 16EM 10S D1022 MTZJ11C :UZ-11BSC L-OUT 10 VCC 9 L001 L2G3120KN <B-1K> VR2601 R3D8 472NJ <B-4. 7K> R2602 DJ 3. 9K R2601 DJ330 R703 DJ 1K R705 1/2DJ 3. 3K C701 KK560 VR701 R3D8 472NJ <B-4. 7K> R702 DJ 3. 9K R701 DJ330 SC2 R-OUT SC2 L-OUT SC2 R-IN SC2 L-IN D1021 MTZJ11C :UZ-11 BSC D1023 MTZJ11C :UZ-11BSC D1026 MTZJ11C :UZ-11BSC R-OUT D1027 MTZJ11C :UZ-11BSC 8 7 Q1042 2SA608 (ECNP:FCNP:GCNP) :QT0379(A:B) B6 12V C1042 X L1027 L2B9 4R7KN C1031 CJ 180CA GND R-IN 6 5 C016 L002 16PM10D C009 L2G3120KN 63GK0. 22V :HJ0. 22G C024 C007 R011 13. 8V C011 KZ 63GK0. 22V 1/2 C013 16EM1000 0. 01FA :HJ0. 22G DJ KZ 150 R006 --V 0. 01FA DJ C023 C008 L003 1. 5K 63GK0. 22V Z21B KZ 0V C014 R009 :HJ0. 22G 0040N 0. 01 KZ 1/2DJ4. 7 R008 FA 0. 01FA DJ 1. 5K 28. 6V 1. 6V R010 1/2DJ4. 7 <R-DRIVE> K26P J10EA050N L2611 R2614 Q2611 L2C1 R-OUT 2SC2688'1' 2SJ12K 331KN 137. 1V (K:L:M) :2SC2621 (DRA:ERA) 2. 2V <R-DRIVE> Q711 2SC2688'1' (K:L:M) :2SC2621 (DRA:ERA) R713 DJ 2. 2K <R-BIAS> R-OUT R714 2SJ12K 137. 1V 2. 2V L2611 L2C1 331KN R KR-1 J30B 0250N KR K6PS J11EL 050N 1S1555 1S1555 1S1555 SP902 VS003PGA :VS017PGB B G 1 2 3 4 5 R2613 <R-BIAS> DJ 2. 2K VR2612 R3D8102NJ 1. 8V R2615-B 1/2DJ 3. 3K C2611 KK560 K7P J10EA050N 1 2 3 4 1. 8V R715-B 1/2DJ 3. 3K C711 KK560 <B-1K> R2612 DJ VR2611 3. 9K R3D8 R2611 472NJ DJ330 <B-4. 7K> VR712 R3D8102NJ <B-1K> VR711 R3D8 472NJ <B-4. 7K> R712 DJ 3. 9K R711 DJ330 G-OUT R1041 1/10 GJ27K C1041 16EM 10 R1043 1/10 GJ820 9. 4V 1SS133 1SS133 Q1041 3. 0V 9. 4V 4. 0V 2. 4V IC001 TDA7263M 11. 9V 3 15. 5V Q1043 4. 0V 3. 4V R005 DJ47 C001 25KZ0. 1FA :KZ0. 1FA R002 1/10 GJ1. 8K C002 KK0. 015BA R001 1/10 GJ1K C018 KZ 0. 01FA 2. 2V 1SS133 R1045 1/10 GJ1K Q1042 R007 DJ47 C006 25EM 33 4 1. 6V C003 25KZ0. 1FA :KZ0. 1FA C004 KK0. 015BA R004 1/10 GJ1. 8K R003 1/10GJ 1K KR-2 J30B0250N 10. 0V Q2621 G-OUT R2624 2SJ12K 2SC2688'1' 143. 8V (K:L:M) :2SC2621 (DRA:ERA) R2627 R2623 R2641 <G-BIAS> DJ DJ DJ 470 1. 8K 4. 7K Q2640 2SA608 (ECNP :FCNP1. 5V :GCNP) :QT0379 (A:B) 0V 0V 1. 9V L2621 L2C1 331KN 5 Q721 2SC2688'1' (K:L:M) :2SC2621 (DRA:ERA) R727 DJ 470 R723 R741 DJ DJ 1. 8K 4. 7K <G-BIAS> 143. 8V R724 2SJ12K L2621 L2C1 331KN 2. 2V 1. 9V R2625-B 1/2DJ 3. 3K C2621 KK560 R725-B 1/2DJ 3. 3K C721 KK560 D2611 D2601 D711 D701 D721 1. 6V 25EM C005 33 D2621 2 R1047 1/10 GJ1. 2K ASSY, PWB, AUDIO F3SL 1AA0B10E3250B R1044 1/10 GJ820 C171 63GK0. 1V :HJ0. 1G B6 12V R1046 1/10 GJ2. 2K L-IN 1 1. 6V Z01 2400010 KB J11EG100N SDA SCL Q171 2SC536 (E-NP:F-NP :G-NP) :QT0378(A:B) 3. 1V R1042 1/10 GJ10K 10 K34B X R2622 DJ VR2621 3. 9K R3D8 R2621 472NJ <B-4. 7K> DJ330 0. 9V R2642 DJ3. 3K R2644 DJ270 Q740 2SA608 (ECNP :FCNP 1. 5V :GCNP) :QT0379 (A:B) 0V 0V VR721 R3D8 472NJ 0. 9V <B-4. 7K> R722 DJ 3. 9K R721 DJ330 R742 DJ3. 3K R744 DJ270 85Vp-p 64µs 11. 8V R171 1/10 GJ470 Q1041/Q1043 2SC536 (E-NP:F-NP:G-NP) :QT0378(A:B) SOUND MUTE B2 25V Z02 2400010 R014 220 R016 1/10GJ 47K 0. 1V R2652 DJ 10K 11. 9V R752 DJ 10K 85Vp-p 64µs 11. 9V 15. 5V R172 220 R173 220 2. 5V MUTE 0V R013 1/10GJ 1. 2K C015 25EM 47 R1207 10K C1205 CJ100CA R2653 DJ 10K Q2651 2SA608(ECNP :FCNP:GCNP) 11. 8V :QT0379(A:B) R753 DJ 10K Q751 2SA608(ECNP :FCNP:GCNP) 11. 8V :QT0379(A:B) R015 1/10GJ 1K R017 1/10GJ 10K Q001 2SC536 (E-NP:F-NP:G-NP) :QT0378(A:B) D2651 1S1555 AF2 AF1 D751 1S1555 1 10 K34A X R1206 1/10 GJ47K Q1204 2SC536 (E-NP:F-NP:G-NP) :QT0378(A:B) B6 12V B8 5V SC1 R-IN SC1 L-IN SC1 L-OUT SC1 R-OUT C2635 250EM22 C2651 (CY:BE) 16EM 330CD K26M J30B0250N K2601-B EK0618L W902 JG0141 AT1 Q0356XXH <A51EBV13X09> C751 16EM 330CD C735 250EM22 (CY:BE) K7M J30B0250N K701-B 1AV4J11B3090N <CRT SOCKET> W902 JG0141 S2 <CRT SOCKET> K12B J10EA 050N K12BS J11EL 050N SG X SG X SG X 11 8 6 10 9 SG X SG X SG X 11 8 6 10 Q901 Q0356XXH <A51EBV13X09> 9 PB2601 1AA4B10E0280A 5 7 PB2601 1AA4B10E20100 5 7 1 K12A J10EA 020N K12AS J11EL 020N C2631 2000KP 1000AHE C731 2000KP 1000AHE 1 2 3 KA J11EG100N K26Q J10EA030N K7Q J10EA030N 123 K11A J10EA020N FR R-IN FR L-IN K26D FO X X K7D FO K6QS J11EL030N 1 1 K11AS J11EL020N SIF Board /Pannello SIF Circuit side/Lato del Circuito C3832 C3833 R3806 C3833 R3831 R3834 R3849 Q3802 C3809 SC2 R-IN SC2 L-IN SC2 R-OUT SC2 L-OUT K10B J10EA050N K10BS J11EL050N 6 4 K38H2 1 Q3842 R3848 4 1 K38H1 R3833 R3832 R3844 R3843 J3842 R3835 R3807 R3806 C3804 R3845 C3816 J3801 C3811 16 KPS J11EL 050N X3814 J3810 11 1 J3811 16 9 TEST IN GND NC VCC1 8 4 0V D202 MTZJ11C :UZ-11BSC C200 25KZ0. 1FA :KZ0. 1FA KP J10EA050N 5 C3815 R3846 7 R3813 SAND CASTLE 5 0. 7V GND D201 MTZJ11C :UZ-11BSC D203 MTZJ11C :UZ-11BSC B6 12V X3813 12V R2005 12K B4 24V C3806 3 0V J3805 J3812 J3841 Q3841 C3842 J3803 T3801 2 0V B4 24V IC501-1 1P03173XXB IC501 LA7832 SW501 S10B1370N 1 5. 3V 45Vp-p 20ms VCC OUT C273 KZ 0. 01FA COLOUR BRIGHT B R 4. 2Vp-p 64µs 7 25. 2V 2. 1V 6 0. 7V 5 C503 CJ 39CA 4 0. 7V 3 25. 3V 13. 4V 2 0V GND IN Component Location/Lato del Componente KDY-6 J30B 0250N 1 Z06 Z05 R513 1SJ 1. 5K 1. 7Vp-p 20ms CONT C501 SHARP NESS BLK G 35EM470 4. 6Vp-p 64µs R502 1/2FJ4. 7 C502 35EM220 D501 EM01Z :ED0448 C504 KZ0. 01FA C505 500KK 1000A C506 100GK0. 1P :100HJ0. 1H L501 L2G33R3KN R511 1SJ 270 C511 100GK 0. 15P :100HJ 0. 15H CLR 26 1. 6V KDY-5 J30B 0250N KDY-3 J30B 0250N KDY-1 J30B 0250N KDY KDY CONT 25 2. 9V IC3811 IC3801 K38H2 K38H1 C212 EM 2. 2 C206 25KZ0. 1FA :KZ0. 1FA C207 25KZ0. 1FA :KZ0. 1FA C208 25KZ0. 1FA :KZ0. 1FA R203 100 R204 100 R205 100 L201 L2B9100KN R206 1/10GJ 100 R207 1/10GJ 100 R208 1/10GJ 100 Q201 2SC536 (E-NP:F-NP :G-NP) :QT0378(A:B) C232 CJ180 CA C231 25KZ0. 1FA :KZ0. 1FA R231 1/10GJ 150 L202 L2B9100KN L203 L2B9100KN D210 1SS133 :1SS176 R214 1/10GJ 100 C209 KK 1000BA B-IN 24 3. 4V Q202 2SC536 (E-NP:F-NP :G-NP) :QT0378(A:B) R215 1/10GJ 33K R501 4. 7K S-VHS PRO TECT D502 1Z75 T T G-IN 23 3. 4V 4. 2Vp-p 64µs 4. 7V Q501 2SC536 (E-NP:F-NP:G-NP) :QT0378(A:B) 0V R504 56K 0V R-IN 22 3. 4V 0. 4V 0V R505 10K R506 1. 5K Y07 J30B0250N R507 180 C513 EM10 C512 25EM 1000T R509 1SJ1. 2 C514 EM10 BLK 21 0. 2V R216 0V 22K Y09 J30B0250N L441A AC0013 :AC0013B Y08 J30B0250N R508 2. 2K L L L R-OUT 20 2. 5V VR501 R3D6101NJ :R3L1101NJ <B-100> Audio Board /Pannello Audio Component Location/Lato del Componente KQ J10EA030N KQS J11EL030N G-OUT 19 2. 5V L441A-1 L442-1 L442-2 B-OUT 18 2. 5V R441 1SJ1K L441A-2 L442 AA0026 :AA0026A T BRIGHT 17 3. 4V 0V 0. 8V 0V R217 22K TV/AV Y10 J30B0250N Y11 J30B0250N 3 T451 L40B05500 C441-3 C441-2 R451 2SJ1. 8 IC1251 2 1 TV/AV 16 S-CHR. 0V CVBS 15 EXT(1V) 3. 9V SHARP- 14 NESS 3. 2V 6 T451-5 2. 1Vp-p 64µs 40Vp-p 64µs 1000Vp-p 64µs L231 L2B94R7KN C235 CD 10CA D431 RD9. 1EB1 :RD9. 1EB2 :UZ-9. 1BCA :UZ-9. 1BCB :MTZ9. 1A :MTZ9. 1B R436 DJ15K D432 EM01Z C438 FK0. 01 (D:BE) Q432-1 0HA0015--Q432 2SD 1651YB --V Q432-C C441-1 C441 200NJ 0. 36 5 HV TER1 X TER1 X IC3451 FOCUS SCREEN 3 C425 C421 3000KK330 1500MJ (AHH:CRD 8200XE :CTB:CTD) C421-3 C421-2 T451-10 IC3401 C234 CJ150CA R218 1/10GJ 56K C215 63GK 0. 47V :HJ 0. 47G C136 16EM 470CD C233 25KZ0. 1FA :KZ0. 1FA R232 1/10GJ 100 L232 L2B94R7KN CVBS 13 INT(2V) 4. 4V CAL 12 DEC GND 11 VCC 10 GND 9 DIS DEC 3. 6V 0V 4 T451-1 T451A-11 1 11 10 R435-3 T451-2 Q151/Q153/Q154 B6 12V 0V 0V Z10 J214 J T3401 K34A K34B IC3431 Q152 2SC536 (E-NP:F-NP :G-NP) :QT0378(A:B) L151 L2B9 100KN R151 DJ 680 R152 220 0V 2SA608 (ECNP:FCNP :GCNP) :QT0379(A:B) R153 1/10 GJ1K R156 1/10 GJ1K 9. 3V R433 1/2DJ 470 R159 DJ680 R432 1/10 GJ330 10. 8V 0V C432 500KK 1000A T431 AD0001 :AD0001A Q432-B L431 ZZ0008 7 T451-7 Q432-E 8. 0V 0. 3V L432 Z21B 0040N C421-1 Z09 Z08 Z07 R435 7WK 8. 2I R435-1 2 C437 250GJ 0. 47 B1 130V R225 J1 D135 MTZJ11C :UZ-11BSC 0V C137 25KZ0. 1FA :KZ0. 1FA R154 1/10 GJ3. 3K Q152 8. 7V C151 CJ39CA 8 1. 6V C135 25KZ0. 1FA :KZ0. 1FA V-OUT 7 (2V) R150 3. 1V 1K A-IN 6 4. 0V Q151 3. 8V 3. 2V L152 8. 7V L2B9 220KN R155 1/10 GJ1K Q431 2SC1627 (O:Y) :2SC2274 (E:F) 2. 4V 3. 1V C433 500KK 3900A R434 2SJ 390 B4 24V C434 35EM 47CD J213 J C430 500KK 1000A R224 1K R223 DJ150K C222 PM2. 2X 0V X151 F32B3. 2V 0140N Q153 2. 3V X152 F32B0090N R157 1/10 GJ 910 R158 1/10 GJ1K R431 1/10 GJ330 0V Q154 D221 1SS133 :1SS176 C226 100EM1AE R226 39K . SIF-IN 5 IDENT 4 (T. B) IF C/R IF C/R 0V 6. 1V R227 D222 10K DS442X :1S1553 :1S2076A :1S2471 D481 EU1 C481 500KK 2700A R481 180K PRO TECT X161 F31B0030N C141 R141 1/10GJ CJ 56RA 6. 8K R161 330 C161 CJ100CA L141 L2B9 6. 0V 100KN 3 C146 CJ12CA 6. 0V 2 3. 1V C142 25KZ0. 1FA :KZ0. 1FA C144 KZ 0. 01FA C140 CJ 15CA D141 1SS265 T141 SL0005XV R143 5. 6K R144 1/10 GJ1K L' R149 1/10 GJ22K Q141 2SC536 (E-NP:F-NP :G-NP) :QT0378(A:B) R147 47K D445 1SS133 :1SS176 R448 1/2DJ 330 D442 1S1553 :1S2076A :1S2471 :DS442X D446 UZ-7. 5BCC :UZ-8. 2BCA C445 EM10 Circuit side/ Lato del Circuito 1. 8Vp-p 64µs C482 250GK 0. 1P R482 5. 6K D482 1SS133 :1SS176 R447 4. 7K C3842 SCART 1 OUT VC141 C143 C3C2 1000N KK 3900BA R142 1/10 GJ5. 6K R145 1/10 GJ 22K POS /NEG Q142 2SA608 (ECNP:FCNP :GCNP) :QT0379(A:B) C3842 C3842 C145 KZ0. 01FA 8. There may be some components or partial circuit differences between the actual chassis and the circuit diagram. s Diode 1S1555 may be replaced with 1S2473, 1S2076 or DS472 unless otherwise noted. sTransistor 2SC536(Q, R, S), 2SC1740(Q, R, S), 2SC945A(Q, R, P) or 2SC1815(G, O, Y) unless otherwise noted. s Transistor 2SA608(E, F) may be replaced with 2SA933(Q, R), 2SA564(QA, RA), or 2SA1015(O, Y) unless otherwise noted. Expression of capacitance and resistance in circuit diagram. Capacitance (Example) 1000 C M 2000 D Characteristic Capacitance value (220pF) Tolerance (±20%) Kind(Ceramic) Rated voltage (1, 000V) Resistance (Example) 1/2 N J 1. 2 Resistance value (1. 2) Tolerance (±5%) Kind (M. carbon) Rated wattage(1/2W) J= ± 5% K= ± 10% M= ± 20% T, A, U, D : Electrolytic C, K, B : Ceramic F : Mylar film M, N : Polypropylene Z : Metallized paper D : Carbon N : Metallized carbon S : Oxide metallized W : Wire wounding C : Solid Terminal guide E B C B E C Chip Components N/2 N/2 + 1 1 A K B E 8 NC C3814 Transistor C EC B N A K Diode K A B C E B C E K 9 Resistor 10 C3805 6 G C3843 0V A Part No. SKP20190 F3JLY (SHEET 2/2) C : Collector B : Base E : Emitter A : Anode K : Kathode 3 12 1 2 3 4 5 67 123 12 x 103= 12k C3802 R3802 D161 1SS133 :1SS176 B R3815 8 R3841 C3841 R3842 R3841 X3801 TEST 7 OUT R X3801 C3806 0V R3805 R3803 R165 1/10 GJ1. 5K 1 C3813 X3811 R3841 C3803 TEST 8 IN 0V Q162 2SA608 (ECNP:FCNP :GCNP) :QT0379(A:B) C3812 R3841 Q3831 IC3801 Q3801 Q161 2SC536 (E-NP:F-NP :G-NP) :QT0378(A:B) C164 J1 J3806 C3831 X3815 Q3831 R3804 16 R164 1/10 GJ4. 7K R166 4. 7K 1 X3812 C3834 J3802 X3801 B6 12V J3807 J3831 Main Board /Pannello Principal Component Location/Lato del Componente SW1901 SW1902 SW1903 SW1904 Prog. Prog. + Vol. Vol. + Video- Audio- Audioinput input-R input-L Headphones RC Pre. amp 47 GENERAL BLOCK DIAGRAM FOR EB4 CHASSIS IC801 CPU Control Keys 10 2 3 4 5 17 18 24 51 52 1 7 L/L' T141/VC141 VIF ADJUST X131 SAW Filter 45/46 14 16 3 2 24 23 22 21 15 13 Q151 7 R-Y/B-Y 28/29 R-Y/B-Y 30/31 CVBS In Q2601 Q2611 20 19 R-Y/B-Y 32 18 R Q2621 G B Q431 1 37 41 48 H-Drive Q432 H-Outpit HV Q152/Q154 B G R BLK External CVBS in Internal CVBS in 2: Bright 3: Contranst 4: Colour 5: Sharpness V-In Functuin In(AV1/AV2) V-In CVBS In RGB/BLK In 6 1 8 Out 3 4 Out 7 2 V-In Audio I/O Video I/O Video I/O Audio I/O 21P Scart: AV1 21P Scart: AV2 Audio In Video In LR T481 RC Transformer Q681 SW601 Main switch 6 SCL SDA 49 50 IC801 CPU 5 IC001 Audio-output Audio Board VR641 +B ADJ. Q641 IC802 Memory IC810 Band sw. VL VH U TU IF IC802 Memory D615 Photo-coupler Q171 IC1202 CVBS int/ext sw. IC1201 CVBS AV2 sw. F601 Fuse Q611 Q613 Q612 IC651 +12V TP-D IC652 +8V VC141 T141 Tuner T611 Converter Transformer CRT Unit SIF Board Q462 VR462 H-Width TP-B IC810 Band SW. IC201 IF/Video/Croma/Def. Audio I/O SIF In IC271 1H Delay 11/12 14/16 Q461 Q501 IC271 1H Delay VR361 H-Centre VR131 AGC IC501 V-Outout VR501 V-Size SIF Unit Audio Unit IC281 SECAM 9/10 Q432 H-Output IC281 SW501 V-Centre TP-E T101 T102 L/L' Power Supply Circuit T451 Flyback Transformer A101 Tuner IC1202 Int. /Ext. Output V-Drive 4 2 T611 Converter Transformer B6: 12V B8: 5V B7: 8V FBT Scart 2 Scart 1 R224 AC In Q612 Q613 IC651 IC652 B1: 150V B2: 25V B3: 15V B4: 24V V-Feedback H V Audio In L, R IC001 Audio Output 1/ 5 10/ 8 L, R Speakers C512 VR501 DY CRT Board /Pannello Cinescopio Circuit side/Lato del Circuito SERVICE REF NO: C21ES56NF-04 SERVICE REF NO: C21ES56NF-07 Component Location/Lato del Componente REGOLAZIONI DI SERVIZIO TECNICO REGOLAZIONE DELL'ALIMENTATORE B1 1. Regolare VR641 in modo che sia centro meccanico, prima di premere l'interruttore principale. Regolare i comandi di luminosità e contrasto sui livelli normali. Servendosi di VR641, regolare il voltaggio su 130 ± 0, 5 V (per 21 pollici). Servendosi di VR641, regolare il voltaggio su 150 ± 0, 5 V (per 25 pollici). Per regolar il livelli, premere il tasto livello. ALLINEAMENTO DI CIRCUITO + 10k 0. 002µF 75 1k a b SERVICE REF NO: C21ES56NF-04 VR611 R-BIAS VR621 G-BIAS Q621 VR601 B-BIAS Q601 VR612 R-DRIVE VR602 B-DRIVE Q611 Q641 8. Regolare VR di schermo per un solo colore in modo che sia ben visibile. Allineamento VIF IMPOSTAZIONE DC 15. 5V Tensione AGC (4. 3-4. 5V) Sonda di uscita Sonda di ingresso Marker frequency Sweep ATT 0dB=176mVrms/75 C644 + IC201-pin48 IC201-pin45 (Side b) IC201-pin7 38. 9MHz 20dB Regolazione Sonda di ingresso Sonda di uscita [REGOLAZIONE VR DEL BIAS (POLARIZZAZIONE)] 7. Servendosi di VR602, VR612 o VR622, regolare la linea in modo che sia bianca. Per tornare al modo di funzionament TV, premere il tasto Richiamo. Forma d'onda VIF P REGOLAZIONE AFT 1. [. . . ] Se l'ampiezza H è troppo larga o troppo stretta, collegare o scollegare un filo in piombo J213 (per 21 pollici). Regolare VR462 per ottenere l'ampiezza H appropriata (per 25/28 pollici). Riconfermare l'alto voltaggio. Allineamento Pilot IMPOSTAZIONE Oscilloscopio Ingresso di desidera SW di sistema Deviazione Modo IC3401-pin5 Sistema B/G 27kHz Stereo Regolazione Servendosi di T3401, regolare "P" in modo che sia di ampiezza massima. Premere il tasto "Funzione" (sul televisore) per selezione la funzione "SCREEN". REGOLAZIONE DI CENTRO-V 1. [. . . ]