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Manual abstract: user guide SANYO 28RN2FSERVICE MANUAL
Detailed instructions for use are in the User's Guide.
[. . . ] oppure le forme di onda di immagine nor2. Tutte le resistenze nominali watt sono di male furono prese usando un oscillatore a 1/6 a meno che sia specificato altrimenti. larga banda ed una sonda bassa capasità. Eccetto per i condensatori elettrolitici, tutti 8. [. . . ] 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. This circuit diagram covers a basic or representative chassis only. 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. J213 IC1201 AV2 SW.
Audio Out L, R
IC201 IF/Video/Chroma/Def. 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. Sintonizzare il ricevitore sull'oscillogramma circolare PAL. Regolare i comandi di luminosità e contrasto sui livelli normali. Collegare il misuratore V digitale su "TP-B". 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. Sintonizzare il ricevitore sulla stazione più chiara. Servendosi di T141, regolare AFT per ottenere l'immagine migliore.
Servendosi di T141, regolare "P" in modo che sia di ampiezza massima.
REGOLAZIONE AGC
NOTA: Non tentare questa regolazione con un segnale debole. [. . . ] 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. Forma d'onda
REGOLAZIONE DI CENTRO-H
1. Sintonizzare il ricevitore sull'oscillogramma circolare. Regolare il centro-H servendosi di VR361.
6. [. . . ]
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