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Colour Television
Service Manual
Model CE25B2-GK
Service Ref. No. CE25B2-GK-01 (F4GEV)
CE25B2-GK-07 (F4GEY)
PRODUCT CODE: 111327615
ORIGINAL VERSION: Chassis No. EB4-A
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.
SKSM0275
F4GEY/V
(W.Europe)
AC 220~240V 50Hz
System B/G
PAL
VHF: E2-E12
CATV: X, Y, Z, S1-S41
UHF: #21~69
75ohm
AV1: CENELEC standard (S-Video
Input)
AV2: CENELEC standard
12 watts x 2
63cm diagonal, 110 degree
59cm
680 x 535.5 x 449.5 mm
25.5 Kg
OCTOBER 1998
25B2
CE
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.
-GK
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Related Manuals for Sanyo CE25B2-GK
Summary of Contents for Sanyo CE25B2-GK
- Page 1 Colour Television 25B2 Service Manual Model CE25B2-GK (W.Europe) Service Ref. No. CE25B2-GK-01 (F4GEV) CE25B2-GK-07 (F4GEY) PRODUCT CODE: 111327615 ORIGINAL VERSION: Chassis No. EB4-A Specifications Power source AC 220~240V 50Hz Television system System B/G Colour system Receiving channel VHF: E2-E12 CATV: X, Y, Z, S1-S41...
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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 certain that all the protective devices are installed when a service is performed on the primary of the properly, such as, control knobs, adjustment covers converter 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. F4GEY/V... -
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. SIF BOARD SIF ADJ. GREY SCALE ADJ. IC3811 IC3801 K38H2 K38H1 AUDIO BOARD CRT BOARD IC1251 IC3451 IC3401... - Page 7 B1 POWER SUPPLY ADJUSTMENT HIGH VOLTAGE & WIDTH ADJUSTMENT 1. Set VR641 to be mechanically centre before pressing [HIGH VOLTAGE ADJUSTMENT] the mains ON/OFF switch. 1. Tune the receiver to the circular pattern. 2. Tune the receiver to a PAL circular pattern. 2.
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Page 8: Circuit Alignment
CIRCUIT ALIGNMENT 10kΩ 0.002µF 75Ω 1kΩ Output probe Input probe VIF alignment Adjustment SETTING 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 necessary to initialise the IC as following step. 2. Select the desired service item by using the Function button on the remote control handset. A. Initialisation 3. Change the data by using the Level + or - button Press and hold the normalisation button on the remote control handset and press the programme +...
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Page 10: Cabinet Parts
610 272 4417 DEC IND-F4GT 610 272 4387 BUTTON UNITED-F4GT 610 273 9299 GRILLE SP-F2VA 610 253 2449 AC CORD HOLDER-U-D4VA 645 023 4316 BADGE,SANYO*46.2X13.5L45 610 261 3032 COIL SPRING-E7GCS ACCESSORIES JXZB RC TRANSMITTER SKP10128-B INST MANUAL -F4MT (GB,D,F) SKP10129-B... -
Page 11: Chassis Electrical Parts List
Note: Parts order must contain Service Ref. No., Part No., and descriptions. Part No. Description Ref. No. Chassis construction: Read description in the Capacitor and Resistor as follows: SERVICE REF. NO.: CE25B2-GK-07 CAPACITOR CERAMIC 100P K 50V ASSY,PWB,MAIN F4GEY 1AA0B10H026G0 (Page 11) - Page 12 Description Ref. No. Part No. Ref. No. Part No. Description Q801 405 118 4217 TR PH2369 C1203 403 069 8305 CERAMIC 0.01U Z Q835 406 007 2106 TR JC546A C1205 403 009 5718 CERAMIC 100P J Q861 406 007 1901 TR JC556A C121 403 068 0419...
- Page 13 Ref. No. Part No. Description Part No. Description Ref. No. C504 403 069 9510 CERAMIC CHIP 0.01Z R1004 401 038 0711 MT-GLAZE 2.2K JA 1/10W C505 403 075 7101 CERAMIC 1000P K 500V R1005 401 027 6628 CARBON 75 JA 1/6W C506 403 183 7901...
- Page 14 Description Ref. No. Part No. Ref. No. Part No. Description R1903A 401 037 5014 MT-GLAZE 0.000 ZA 1/10W R508 401 025 7825 CARBON 2K2 JA 1/6W R1904 401 038 2111 MT-GLAZE 2.7K JA 1/10W R509 401 057 7507 OXIDE-MT 0.82 JA R1905 401 038 0711 MT-GLAZE...
- Page 15 Ref. No. Part No. Description Part No. Description Ref. No. R864 401 039 0314 MT-GLAZE 820 JA 1/10W L607 610 237 1000 PIPE CORE R865 401 038 0711 MT-GLAZE 2.2K JA 1/10W L608 610 237 1000 PIPE CORE R866 401 038 0711 MT-GLAZE 2.2K JA 1/10W L641...
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Page 16: Assy,Pwb,Sif F2Rt
Description Ref. No. Part No. Ref. No. Part No. Description D861 407 012 4416 DIODE 1SS133-T-77 SW1903 610 011 2698 SWITCH,PUSH D871 407 012 4416 DIODE 1SS133-T-77 SW1904 610 011 2698 SWITCH,PUSH D872 407 055 7927 ZENER DIODE RD3.6EL SW501 610 011 2728 SWITCH,LEVER 1P-3T SW601... - Page 17 Ref. No. Part No. Description Part No. Description Ref. No. COIL PB001 610 259 5857 PWB,AUDIO&SIF F2RC X3801 421 006 2902 SAW F OFW G9251 L3451 401 037 5014 MT-GLAZE 0.000 ZA 1/10W X3811 645 003 2806 CERAMIC FILTER (5.5C) MISCELLANEOUS X3814 645 006 3022...
- Page 18 403 045 1504 ELECT 1000U M C012 403 045 1504 ELECT 1000U M C015 403 047 3100 ELECT 47U M SERVICE REF. NO.: CE25B2-GK-01 C018 403 069 9510 CERAMIC CHIP 0.01Z C021 403 154 1907 ELECT 1000U M ASSY,PWB,MAIN F4GEV 1AA0B10H019U0 C1001...
- Page 19 Ref. No. Part No. Description Part No. Description Ref. No. C138 403 069 9510 CERAMIC CHIP 0.01Z C603 403 076 7130 CERAMIC 1000P M C141 403 028 4419 CERAMIC 56P J C604 403 076 7130 CERAMIC 1000P M C142 403 068 0419 CERAMIC 0.1U Z C605...
- Page 20 Ref. No. Part No. Description Part No. Description Ref. No. R1013 401 012 4543 CARBON 100 JA 1/4W R1924 401 022 3147 CARBON 6K8 JA 1/4W R1014 401 027 6628 CARBON 75 JA 1/6W R2001 401 038 2210 MT-GLAZE 27K JA 1/10W R1015 401 038 6416 MT-GLAZE...
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Page 21: Variable Resistor
Ref. No. Part No. Description Part No. Description Ref. No. R620 401 007 5815 CARBON 120K JA 1/2W R873 401 038 6416 MT-GLAZE 4.7K JA 1/10W R621 401 007 5815 CARBON 120K JA 1/2W R874 401 037 5618 MT-GLAZE 10K JA 1/10W R622 401 014 5241 CARBON... - Page 22 Description Ref. No. Part No. Ref. No. Part No. Description D1007 407 063 8319 ZENER DIODE MTZJ11C IC001-1 610 251 4186 AUDIO HEATSINK ASSY E7PC D1008 407 063 8319 ZENER DIODE MTZJ11C IC001-2 411 046 8507 SCR PAN+SW+W 3X10 D1010 407 063 8319 ZENER DIODE MTZJ11C IC001-3...
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Page 23: Picture Tube
Ref. No. Part No. Description Part No. Description Ref. No. X201 645 025 2631 OSC,CRYSTAL 4.43MHZ MISCELLANEOUS X871 645 018 9593 OSC,CRYSTAL 12MHZ K26M 645 008 4058 TERMINAL PLUG 645 008 4058 TERMINAL PLUG K26P 645 008 7288 HOUSING PLUG 5P 645 008 4058 TERMINAL PLUG K26Q... - Page 24 -24- SANYO ELECTRIC CO. LTD. SERVICE MANUAL FOR EB4 CHASSIS...
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Page 25: Colour Television
J1EK1745- K1001 :J11B0490N L1002 Z21B0040N D1010 R1014 SHARP MTZJ11C NESS R1001 R1003 :UZ-11BSC 1/10 R1002 R1004 1/10 R1005 R1008 CONT GJ560 1/10 1/10 GJ560 GJ2.2K GJ2.2K BRIGHT L1003 L1004 L1005 L1006 R1012 L2B9 L2B9 L2B9 L2B9 R1010 COLOUR 100KN 100KN 100KN 100KN R1009... - Page 26 Main Board /Pannello Principal Circuit side/Lato del Circuito...
- Page 27 J1EK1745- K1002 :J11B0490N CRT Board /Pannello Cinescopio 64 µ s 64 µ s 90Vp-p 100Vp-p ASSY,PWB,CRT F2RC Component Location/Lato del Componente 1AA0B10E24500 L2601 Q2601 R2604 L1022 L2C1 2SC2688'1' 2SJ12K Z21B0040N B-OUT 331KN SP901 (K:L:M) 134.3V A10B00400 :2SC2621 L1023 L1024 L1025 L1026 J10EA020N <B-DRIVE>...
- Page 28 FRONT-IN K12A J10EA020N K12B J10EA R1251 050N 1/10 GJ2.7K SC2-IN R1252 C1251 1/10 16EM GJ6.8K MONITOR-OUT R1253 1/10 Q1251 GJ82K R1264 2SC2812L6 1/10 :BC848B R1254 GJ82K 1/10 GJ82K Q1252 2SC2812L6 R1263 IC3431 R1257 :BC848B 1/10 TDA8424 1/10 GJ82K C3431 GJ470 R1256 R1262 1/10...