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Colour Television
Service Manual
Model C25EG65NB A
Service Ref. No. C25EG65NB A-03
PRODUCT CODE: 111325400
ORIGINAL VERSION: Chassis No. EB4-A
Service Ref. No. C25EG65NB A-04
Service Ref. No. C25EG65NB A-05
Service Ref. No. C25EG65NB A-06
Service Ref. No. C25EG65NB A-07
Service Ref. No. C25EG65NB A-08
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.
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
Part No. SKSM0212
F2VAM
(U.K.)
JULY 1997
25BN1
Specifications
Power source
Television system
Colour system
Receiving channel
Aerial input impedance
AV terminal
21 Pin sockets
Sound output(Cont.)
Picture tube
(Visible picture diagonal) 59cm
Dimensions (WxHxD)
Weight
AC 220~240V 50Hz
System I
PAL
UHF 21~69
75ohm
CENELEC standard
5 watts X2
63cm diagonal, 110 degree
680 x 535.5 x 449.5mm
25.5 Kg
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Table of Contents
Related Manuals for Sanyo 25BN1
Summary of Contents for Sanyo 25BN1
- Page 1 Colour Television 25BN1 Service Manual Model C25EG65NB A (U.K.) Service Ref. No. C25EG65NB A-03 PRODUCT CODE: 111325400 ORIGINAL VERSION: Chassis No. EB4-A Service Ref. No. C25EG65NB A-04 Service Ref. No. C25EG65NB A-05 Service Ref. No. C25EG65NB A-06 Service Ref. No. C25EG65NB A-07 Service Ref.
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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 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. F2VAM... -
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. TRAP ALIGNMENT 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 F2VAM... - Page 7 B1 POWER SUPPLY ADJUSTMENT HIGH VOLTAGE & WIDTH ADJUSTMENT 1. Set VR641 to it’s mechanical centre before pressing [HIGH VOLTAGE ADJUSTMENT] the mains switch. 1. Tune the receiver to 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 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 39.5MHz Sweep ATT... - Page 9 INITIALISATION (Important Notice) When you replace a memory IC (IC802), it is Service mode description necessary to initialise the IC as following step. K1, K2 : For adjustment of stereo separation ST ID : Mode setting for A2 stereo judgement A.
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Page 10: Cabinet Parts List
DOOR-F2RA 610 261 6125 DEC BOARD-F2VTM 610 260 6843 DEC CONTROL SHEET-F2VTM 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 610 254 8426 SPACER CUSHION-D5PC 412 009 3003... -
Page 11: Chassis Electrical Parts List
/ ! \ CHASSIS ELECTRICAL PARTS LIST Product safety should be considered when a component replacement is made in any area of a receiver. Components indicated by a mark in this parts list and the circuit diagram show components whose value have special significance to product safety. -
Page 12: Assy,Pwb,Crt F2Rc
Ref. No. Part No. Description Ref. No. Part No. Description ASSY,PWB,AUDIO F2RC 1AA0B10E23000 C3488 403 043 9106 ELECT 47U M C3490 403 009 5708 CERAMIC 100P J C3491 403 130 3604 CERAMIC 0.047U K 403 130 3109 CERAMIC 0.047U K TRANSISTOR C3492 403 041 8804... - Page 13 Ref. No. Part No. Description Ref. No. Part No. Description Q2611 405 041 6507 TR 2SC2621-D-RA K26M 645 008 4058 TERMINAL,PLUG 405 041 6705 TR 2SC2621-E-RA K26P 645 004 2911 PLUG,5P 405 066 9903 TR 2SC2688(1)-K K26Q 645 004 2898 PLUG,3P 405 067 0008 TR 2SC2688(1)-L...
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Page 14: Integrated Circuit
Ref. No. Part No. Description Ref. No. Part No. Description 405 019 3804 TR 2SC536-G-NP 405 019 1909 TR 2SC536-E-NP Q121 406 007 2106 TR JC546A 405 019 2708 TR 2SC536-F-NP 406 007 2007 TR JC546B 405 019 3804 TR 2SC536-G-NP 405 019 1909 TR 2SC536-E-NP Q611... - Page 15 Ref. No. Part No. Description Ref. No. Part No. Description 409 026 9507 IC L78M12-RA C1105 403 009 5708 CERAMIC 100P J 409 269 1207 IC L78M12CV C1106 403 069 1702 CERAMIC 1000P K 409 366 1803 IC MC78M12CT C1107 403 041 8804 ELECT 10U M...
- Page 16 Ref. No. Part No. Description Ref. No. Part No. Description C272 403 069 1702 CERAMIC 1000P K C617 403 059 6205 POLYESTER 0.022U K C273 403 069 9500 CERAMIC 0.01U Z 403 179 2408 POLYESTER 0.022U K C274 403 041 8804 ELECT 10U M / ! \...
- Page 17 Ref. No. Part No. Description Ref. No. Part No. Description R1009 401 027 6608 CARBON 75 JA 1/6W R161 401 026 3905 CARBON 330 JA 1/6W R101 401 037 7810 MT-GLAZE 150 JA 1/10W R162 401 037 9101 MT-GLAZE 180 JA 1/10W R1010 401 027 6608 CARBON...
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Page 18: Variable Resistor
Ref. No. Part No. Description Ref. No. Part No. Description R451 401 061 0808 OXIDE-MT 3.9 JA R822 401 038 6505 MT-GLAZE 47K JA 1/10W R462 401 015 2704 CARBON 1.2K JA 1/6W R823 401 025 7805 CARBON 2.2K JA 1/6W R463 401 024 9325... - Page 19 Ref. No. Part No. Description Ref. No. Part No. Description COIL 407 057 0104 ZENER DIODE RD5.6EB3 L001 645 008 5635 INDUCTOR,12U K 407 151 8501 ZENER DIODE UZ-5.6BCC L002 645 008 5635 INDUCTOR,12U K D135 407 063 8309 ZENER DIODE MTZJ11C L003 645 002 1787 CORE,PIPE...
- Page 20 Ref. No. Part No. Description Ref. No. Part No. Description 407 013 1008 DIODE 1S1553 K10B 645 004 2911 PLUG,5P 407 013 4306 DIODE 1S2076A K1001 645 005 5867 SOCKET,RGB 21P 407 013 6508 DIODE 1S2471 610 234 3779 SOCKET 21P / ! \ K1001Z 610 261 2813...
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Page 21: Specifications
Colour Television Service Manual 25BN1 Mascot No. 25BN1 Model C25EG64NB A (U.K) Service Ref. No. C25EG64NB A-04 SERVICE MANUAL SUPPLEMENT Chassis No. EB4-A25 Product Code.111 325 400 SERVICE MANUAL SUPPLEMENT THIS SUPPLEMENT SHOULD BE FILLED WITH THE ORIGINAL SERVICE MANUAL FOR C25EG65NB A-03. - Page 22 ELECTRICAL PARTS LIST DIFFERENCES Description Ref. No. Part No. Ref. No. Part No. Description Service Ref. No. C25EG64NB A-04 Chassis construction ASSY, PWB, MAIN F2VAV 1AA0B10H016Y0 (Differences) ASSY,PWB,SIF F2RC 1AA0B10E2300A (Page 11) ASSY,PWB,AUDIO F2RC 1AA0B10E2300B (Page 12) ASSY,PWB,CRT F2RC 1AA0B10E24500 (Page 12) OUT OF CIRCUIT-F2VAV (Page 11)
- Page 23 Colour Television Service Manual 25BN1 Mascot No. 25BN1 Model C25EG64NB A (U.K) Service Ref. No. C25EG64NB A-05 SERVICE MANUAL SUPPLEMENT Chassis No. EB4-A25 Product Code.111 325 400 SERVICE MANUAL SUPPLEMENT THIS SUPPLEMENT SHOULD BE FILLED WITH THE ORIGINAL SERVICE MANUAL FOR C25EG65NB A-03.
- Page 24 ELECTRICAL PARTS LIST DIFFERENCES CABINET DIFFERENCE LIST Description Ref. No. Part No. Ref. No. Part No. Description Service Ref. No. C25EG64NB A-05 Chassis construction ASSY, PWB, MAIN F2VAMK 1AA0B10H019H0 (Differences) ASSY,PWB,SIF F2RC 1AA0B10E2300A (Page 11) ASSY,PWB,AUDIO F2RC 1AA0B10E2300B (Page 12) ASSY,PWB,CRT F2RC 1AA0B10E24500 (Page 12)
- Page 25 Colour Television Service Manual 25BN1 Mascot No. 25BN1 Model C25EG64NB A (U.K) Service Ref. No. C25EG64NB A-06 SERVICE MANUAL SUPPLEMENT Chassis No. EB4-A25 Product Code.111 325 400 SERVICE MANUAL SUPPLEMENT THIS SUPPLEMENT SHOULD BE FILLED WITH THE ORIGINAL SERVICE MANUAL FOR C25EG65NB A-03.
- Page 26 ELECTRICAL PARTS LIST DIFFERENCES Description Ref. No. Part No. Ref. No. Part No. Description / ! \ W901 645 011 8838 CORD,POWER Service Ref. No. C25EG64NB A-06 W902 610 251 5831 ASSY,WIRE GND CONNECTOR E Chassis construction ASSY, PWB, MAIN F2VAV 1AA0B10H016Y0 (Differences) ASSY,PWB,SIF F2RC...
- Page 27 Colour Television Service Manual 25BN1 Mascot No. 25BN1 Model C25EG64NB A (U.K) Service Ref. No. C25EG64NB A-07 SERVICE MANUAL SUPPLEMENT Chassis No. EB4-A25 Product Code.111 325 400 SERVICE MANUAL SUPPLEMENT THIS SUPPLEMENT SHOULD BE FILLED WITH THE ORIGINAL SERVICE MANUAL FOR C25EG65NB A-03.
- Page 28 ELECTRICAL PARTS LIST DIFFERENCES CABINET DIFFERENCE LIST Description Ref. No. Part No. Ref. No. Part No. Description Service Ref. No. C25EG64NB A-07 Chassis construction ASSY, PWB, MAIN F2VAM 1AA0B10H016W0 (Differences) ASSY,PWB,SIF F2RC 1AA0B10E2300A (Page 11) ASSY,PWB,AUDIO F2RC 1AA0B10E2300B (Page 12) ASSY,PWB,CRT F2RC 1AA0B10E24500 (Page 12)
- Page 29 Colour Television Service Manual 25BN1 Mascot No. 25BN1 Model C25EG64NB A (U.K) Service Ref. No. C25EG64NB A-08 SERVICE MANUAL SUPPLEMENT Chassis No. EB4-A25 Product Code.111 325 400 SERVICE MANUAL SUPPLEMENT THIS SUPPLEMENT SHOULD BE FILLED WITH THE ORIGINAL SERVICE MANUAL FOR C25EG65NB A-03.
- Page 30 ELECTRICAL PARTS LIST DIFFERENCES Description Ref. No. Part No. Ref. No. Part No. Description Service Ref. No. C25EG64NB A-08 OUT OF CIRCUIT PARTS-F2VAV Chassis construction PICTURE TUBE / ! \ Q901 414 007 1104 A59ECY13X38 ASSY, PWB, MAIN F2VAY 1AA0B10H019S0 (Differences) ASSY,PWB,SIF F2RC 1AA0B10E2300A...
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Page 31: Cabinet Parts
Ref. No. Part No. Description Part No. Description Ref. No. CABINET PARTS 610 270 7397 ASSY,CABINET FR-F2VAM-A ACCESSORIES 610 269 0477 TV STAND-F2VA (MST2572) or 610 267 8413 TV STAND-F3JA (MST2171) THIS CABINET ASSY HAS 8 BRASS INSERTS FITTED TO THE UNDERSIDE OF THE CABINET.