Detailed instructions for use are in the User's Guide.
[. . . ] 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. [. . . ]