Table of Contents
Advertisement
Quick Links
Colour Television
Service Manual
C28ER57N
(W.Europe)
Service Ref. No. C28ER57N-00
Service Ref. No. C28ER57N-01
PRODUCT CODE: 1113 27208
ORIGINAL VERSION: Chassis No. EB4-A
Note
This TV receiver will not work properly in foreign
countries where the television transmission system
and power source differ from the design specifications.
Refer to the specifications for the design specifications
Give complete "SERVICE REF. NO." for parts order or
servicing, it is shown on the rating sheet on the
cabinet back of the TV set.
Specifications
Power source
Television system
Colour system
Receiving channel
Aerial input impedance
AV terminal
21 Pin socket
Sound output(Music)
Picture tube
(Visible picture diagonal)
Dimensions (WxHxD)
Weight
Part No.
SKSM0174
F3SGM
AC 220~240V 50Hz
System B/G
PAL
VHF: E2-E12
CATV: X, Y, Z, S1-S41
UHF: #21~69
75ohm
CENELEC standard
12 watts X2
70cm diagonal, 110 degree
66cm
736 x 596 x 500mm
32 Kg
28DN2
Advertisement
Table of Contents
Related Manuals for Sanyo 28DN2
Summary of Contents for Sanyo 28DN2
- Page 1 Colour Television 28DN2 Service Manual C28ER57N (W.Europe) Service Ref. No. C28ER57N-00 Service Ref. No. C28ER57N-01 PRODUCT CODE: 1113 27208 ORIGINAL VERSION: Chassis No. EB4-A Note This TV receiver will not work properly in foreign countries where the television transmission system and power source differ from the design specifications.
-
Page 2: Safety Precaution
SAFETY PRECAUTION 1: An isolation transformer should be connected in the 3: When replacing a chassis in the cabinet, always be power line between the receiver and the AC line when certain that all the protective devices are installed a service is performed on the primary of the converter properly, such as, control knobs, adjustment covers or transformer of the set. -
Page 3: Block Diagram
BLOCK DIAGRAM This is a diagram for all models and therefore differs slightly from the actual block diagram. F3SGM... -
Page 4: Circuit Description
CIRCUIT DESCRIPTION 1. POWER SUPPLY control) The chroma signal is divided into R-Y and B-Y The power supply circuit of the EB4-A chassis is chroma signals, demodulated in IC201, and output from composed of a rectifier smoothing circuit, an oscillation pin30 (R-Y) and pin31 (B-Y). -
Page 5: Horizontal Output
6. HORIZONTAL OUTPUT Pin25: Black A horizontal oscillation signal is output from pin37 of Pin26: IREF IC201 and switches the drive transistor Q431. This Pin27: Odd/Even output switching signal is current amplified by the drive Pin28: GND transformer T431 and drives the output transistor Q432. Pin29: - When Q432 becomes ON, an amplifying current flows Pin30: V-deflection stop output... -
Page 6: Service Control Adjustment
SERVICE CONTROL ADJUSTMENT B1 POWER SUPPLY ADJ. AFT ADJ. TU-AGC ADJ. MAIN BOARD HIGH VOLTAGE & H-WIDTH ADJ. FOCUS ADJ. V-CENTRE ADJ. V-SIZE ADJ. H-CENTRE ADJ. GREY SCALE ADJ. SIF BOARD SIF ADJ. CRT BOARD IC3811 IC3801 K38H2 K38H1 AUDIO BOARD IC1251 IC3451 IC3401... - Page 7 B1 POWER SUPPLY ADJUSTMENT HIGH VOLTAGE & WIDTH ADJUSTMENT 1. Set VR641 to be mechanically centre before [HIGH VOLTAGE ADJUSTMENT] pressing the mains ON/OFF switch. 1. Tune the receiver to the circular pattern. 2. Tune the receiver to a PAL circular pattern. 2.
-
Page 8: Circuit Alignment
CIRCUIT ALIGNMENT 10kΩ 0.002µF 75Ω 1kΩ Output probe Input probe VIF alignment SETTING Adjustment Waveform DC 15.5V C644 + By using T141, adjust "P" to AGC voltage (4.3-4.5V) IC201-pin48 be maximum amplitude. Output probe IC201-pin45 (Side b) Input probe IC201-pin7 Marker frequency 38.9MHz Sweep ATT... - Page 9 INITIALISATION (Important Notice) When you replace a memory IC (IC802), it is 2. Select the desired service item by using the Function necessary to initialise the IC as following step. button on the remote control handset. 3. Change the data by using the Level + or - button A.
-
Page 10: Cabinet Parts
610 264 7594 DOOR-F3SLV 610 261 6132 DEC BOARD-F3SCM 610 261 7726 DEC CONTROL SHEET-F3SCM 610 253 2449 HOLDER AC CORD-GBR-D4VA 645 003 9256 BADGE,SANYO*46.2X13.5L45 610 104 2505 LATCH PUSH,7.9X6.9BK 610 210 7302 COIL SPRING-D8HA ACCESSORIES JXZB 0r JXRG RC TRANSMITTER SKP10064... -
Page 11: Chassis Electrical Parts List
Ref. No. Part No. Description Part No. Description Ref. No. Chassis construction Read description in the Capacitor and Resistor as follows: CAPACITOR C28ER57N-00 (28DN2) CERAMIC 100P K 50V Rated Voltage ASSY,PWB,MAIN F3SGM 1AA0B10E226C0 (Page 11) Tolerance Symbols: ASSY,PWB,SIF F2RV 1AA0B10E230CA... - Page 12 Description Ref. No. Part No. Ref. No. Part No. Description 405 019 1909 TR 2SC536-E-NP 405 019 3804 TR 2SC536-G-NP 405 019 2708 TR 2SC536-F-NP Q203 406 007 2106 TR JC546A 405 019 3804 TR 2SC536-G-NP 406 007 2007 TR JC546B Q1042 406 007 1901 TR JC556A...
- Page 13 Ref. No. Part No. Description Part No. Description Ref. No. 405 019 1909 TR 2SC536-E-NP C103A 403 069 9500 CERAMIC 0.01U Z 405 019 2708 TR 2SC536-F-NP C1031 403 014 9203 CERAMIC 180P J 405 019 3804 TR 2SC536-G-NP C104 403 043 9106 ELECT 47U M...
- Page 14 Description Ref. No. Part No. Ref. No. Part No. Description C234 403 013 3004 CERAMIC 150P J / ! \C632 404 044 2806 CERAMIC 470P K 400V C235 403 008 7406 CERAMIC 10P D 404 071 4606 CERAMIC 470P K 400V C271 403 069 1702...
- Page 15 Ref. No. Part No. Description Part No. Description Ref. No. R1015 401 038 6406 MT-GLAZE 4.7K JA 1/10W R1906 401 037 5004 MT-GLAZE 0.000 ZA 1/10W R1016 401 019 1000 CARBON 390 JA 1/4W R1907 401 037 5608 MT-GLAZE 10K JA 1/10W R1017 401 024 7400 CARBON...
-
Page 16: Variable Resistor
Description Ref. No. Part No. Ref. No. Part No. Description R511 401 059 2807 OXIDE-MT 150 JA R864 401 039 0314 MT-GLAZE 820 JA 1/10W R512 401 010 7625 CARBON 560 JA 1/2W R865 401 038 6406 MT-GLAZE 4.7K JA 1/10W R513 401 063 1001 OXIDE-MT... - Page 17 Ref. No. Part No. Description Part No. Description Ref. No. L152 645 003 9782 INDUCTOR,22U K 407 163 8209 ZENER DIODE UZ-5.1BCC L201 645 001 4567 INDUCTOR,10U K D352 407 057 8308 ZENER DIODE RD8.2EB2 L202 645 001 4567 INDUCTOR,10U K 407 164 5207 ZENER DIODE UZ-8.2BCB L203...
-
Page 18: Assy,Pwb,Sif F2Rv
Description Ref. No. Part No. Ref. No. Part No. Description D648 407 053 4007 ZENER DIODE MTZ16C C511 403 188 1607 MT-POLYPRO 0.1U J 100V 407 054 7205 ZENER DIODE RD16EB3 COIL 407 164 7201 ZENER DIODE UZ-16BCC L441 610 000 1046 LINEARITY COIL D652 407 053 6803... -
Page 19: Assy,Pwb,Audio F2Rv
Ref. No. Part No. Description Part No. Description Ref. No. ASSY,PWB,AUDIO F2RV 1AA0B10E230CB C3478 403 048 6308 ELECT 0.47U M C3480 403 192 5905 CERAMIC 0.1U K 403 070 0909 CERAMIC 0.1U K TRANSISTOR C3481 403 069 9500 CERAMIC 0.01U Z Q1251 405 109 4407 TR BC848-B... -
Page 20: Assy,Pwb,Crt F2Rc
Description Ref. No. Part No. Ref. No. Part No. Description X3401 645 016 6662 OSC,CRYSTAL 10MHZ DIODE X3461 645 007 7449 OSC,CRYSTAL 8.192MHZ D2601 407 013 1206 DIODE 1S1555 D2611 407 013 1206 DIODE 1S1555 D2621 407 013 1206 DIODE 1S1555 ASSY,PWB,CRT F2RC 1AA0B10E24500 D2651... - Page 21 Some voltages may vary with gio presi usando un segnale di barre col- lare importanza per il sicuro funziona- ficato altrimenti. 28DN2 cance to product safety. It is particu- MODEL NUMBER: signal strength. ore sono con tutti i controlli alle loro Il transistore 2SA608(E,F) puo essere mento del TV.
- Page 22 Main Board /Pannello Principal Circuit side/Lato del Circuito C3461 R3469 KZ0.01FA FRONT-IN 1/10 GJ33K C3494 L3455 K12A 16EM47 L2A22R2KN J10EA020N VCONT VDDF1 C3462 16EM C3493 MIXREF VCLK 0.01FA C3458 R3461 K12B 1/10 J10EA 390BA GJ1K R1251 050N DQPSK VSSF1 1/10 C3463 GJ2.7K R3462...
- Page 23 J1EK1745- K1002 :J11B0490N Waveforms on ICs and Transistors ASSY,PWB,CRT F2RC 1AA0B10E24500 IC201-pin7 IC201-pin15 IC201-pin18 IC201-pin19 IC201-pin20 L2601 <CVBS out> <CVBS in> <B out> <G out> <R out> Q2601 R2604 L1022 L2C1 2SC2688'1' 2SJ12K Z21B0040N B-OUT 331KN SP901 (K:L:M) A10B00400 :2SC2621 10 µ...
- Page 24 Main Board /Pannello Principal Component Location/Lato del Componente GENERAL BLOCK DIAGRAM FOR EB4 CHASSIS Audio- Video- Audio- SW1901 SW1902 SW1904 SW1903 input-R input-L Headphones Prog.+ Prog.- input Vol.- Vol.+ IC801 Audio In Video In 21P Scart: AV1 21P Scart: AV2 RC Pre.amp Control Keys Audio I/O...