Sanyo C25EG92F Service Manual
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Sanyo C25EG92F Service Manual

Sanyo C25EG92F Service Manual

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Colour Television

Specifications
Power source
Television system
Colour system
Receiving channel
Aerial input impedance
AV terminal
21 Pin socket
Sound output
Picture tube
(Visible picture diagonal) 59 cm
Dimensions (WxHxD)
Weight
Part No. SKSM0121 E8AL
Service Manual Model C25EG92F
AC 220~240V 50Hz
System B/G, I, L/L'
PAL/SECAM
VHF E2~E12,F2~F10
CATV X, Y, X, S1~S41,B~Q
UHF 21~69
75ohm
CENELEC standard
3 watts
63 cm diagonal, 90 degree
584 x 533.5 x 446.5mm
24 Kg
Service Ref. No. C25EG92F-00
Service Ref. No. C25EG92F-02
PRODUCT CODE
1113 24310
ORIGINAL VERSION
Chassis No. EC3-A
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
(France)

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Summary of Contents for Sanyo C25EG92F

  • Page 1: Colour Television

    Colour Television Service Manual Model C25EG92F (France) Service Ref. No. C25EG92F-00 Service Ref. No. C25EG92F-02 PRODUCT CODE Specifications Power source AC 220~240V 50Hz 1113 24310 Television system System B/G, I, L/L' ORIGINAL VERSION Colour system PAL/SECAM Chassis No. EC3-A Receiving channel...

  • 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.

  • 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 EC3-A chassis is chroma signals, demodulated in IC101, and output from composed of a rectifier smoothing circuit, an oscillation pin30 (R-Y) and pin31 (B-Y). These chroma signals pass circuit, a control circuit and an output rectifier circuit.

  • Page 5: Horizontal Output

    6.HORIZONTAL OUTPUT Pin33: AFT signal input A horizontal oscillation signal is output from pin37 of Pin34: Option switch (GND) IC101 and switches the drive transistor Q431. This Pin35: Key scan signal input switching signal is current amplified by the drive Pin36: Timer-ON (Timer LED drive) transformer T431 and drives the output transistor Q432.

  • Page 6: Service Control Adjustment

    SERVICE CONTROL ADJUSTMENT B1 POWER SUPPLY ADJ. AFT ADJ. TU-AGC ADJ. MAIN BOARD SW701 SW702 SW703 SW704 SW705 SW706 SW301 Q712 Q713 Q722 Q708 Q721 Q352 Q1002 IC350 Q1003 Q345 IC701 Q722 Q703 F301 Q371 Fuse Q372 Q1001 Q353 IC171 IC790 Q711 Audio...
  • Page 7 B1 POWER SUPPLY ADJUSTMENT V-CENTRE ADJUSTMENT 1. Set VR351 to be mechanical centre before pressing the main 1. Tune the receiver to the circular pattern. switch. 2. If picture is not in the centre, connect or disconnect a lead 2. Tune the receiver to the PAL circular pattern. wire JR012.

  • Page 8: Circuit Alignment

    CIRCUIT ALIGNMENT VIF ALIGNMENT 10kΩ 0.002µF 75Ω 1kΩ Output probe Input probe (A) DETECTOR DETECTOR ADJUSTMENT I ADJUSTMENT II DC 15V R352 & R382 R352 & R382 AGC voltage (4.3-4.5V) IC101-48 p IC101-48 p Output probe Tuner IF Tuner IF (Side b) (Side b) Input probe (A)
  • Page 9 MEMORY IC REPLACEMENT (Important Notice) PT M Level Button Function Button When you replace a memory IC (IC790), it is necessary to initialise the IC as follows. A. Initialisation of Memory IC 1. When you press and hold the Function button on the TV set and then press the Recall button on the RC transmitter, the following picture will appear on the screen.

  • Page 10: Cabinet Parts List

    CABINET PARTS LIST C25EG92F-00/02 PART No. DESCRIPTION 610 256 4266 ASSY,CABINET FR-E8AC 610 254 9201 CABINET BACK-E8YC 610 255 2447 DEC BOARD-E8GC 610 256 4303 BUTTON UNIT-E8AC 610 253 2449 HOLDER AC CORD-GBR-D4VA 645 003 9256 BADGE,SANYO*46.2X13.5L45 610 210 7302...

  • Page 11: Chassis Electrical Parts List

    Note Parts order must contain Service Ref. No., Part No., and descriptions. Ref. No. Part No. Description Part No. Description Ref. No. SERVICE REF. NO. C25EG92F-00 Read description in the Capacitor and Resistor as follows: CAPACITOR CERAMIC 100P K 50V OUT OF CIRCUIT BOARD Rated Voltage PICTURE TUBE...
  • Page 12 Description Ref. No. Part No. Ref. No. Part No. Description 405 019 1909 TR 2SC536-E-NP 405 019 2708 TR 2SC536-F-NP 405 019 2708 TR 2SC536-F-NP 405 019 3804 TR 2SC536-G-NP 405 019 3804 TR 2SC536-G-NP Q708 406 007 1901 TR JC556A Q154 406 007 2106 TR JC546A...
  • Page 13 Ref. No. Part No. Description Part No. Description Ref. No. CAPACITOR 403 256 0808 MT-COMPO 0.47U J C100 403 074 8901 CERAMIC 680P K C212 403 057 0601 POLYESTER 0.01U K C101 403 194 4609 ELECT 470U M 403 179 3801 POLYESTER 0.01U K C102...
  • Page 14 Description Ref. No. Part No. Ref. No. Part No. Description 403 237 8007 MT-COMPO 0.1U J 403 237 7901 MT-COMPO 0.22U J C402 403 061 8303 POLYESTER 4700P K C742 403 270 2901 MT-POLYEST 0.1U K 403 179 1104 POLYESTER 4700P K 403 237 8007 MT-COMPO...
  • Page 15 Ref. No. Part No. Description Part No. Description Ref. No. R219 401 019 1000 CARBON 390 JA 1/4W R448 401 065 2808 OXIDE-MT 120 JA R230 401 027 5908 CARBON 68K JA 1/6W R451 401 026 8108 CARBON 4.7 JA 1/6W R231 401 027 9005...
  • Page 16 Description Ref. No. Part No. Ref. No. Part No. Description R767 401 026 9907 CARBON 4.7K JA 1/6W L152 645 008 2894 INDUCTOR,5.6U K R768 401 020 0801 CARBON 470 JA 1/4W L153 645 008 2924 INDUCTOR,8.2U K R771 401 024 9701 CARBON 12K JA 1/6W...
  • Page 17 Ref. No. Part No. Description Part No. Description Ref. No. 407 013 1008 DIODE 1S1553 K801 610 009 8275 SOCKET 21P 407 013 4306 DIODE 1S2076A 610 218 6673 SOCKET 21P 407 013 6508 DIODE 1S2471 610 225 2361 SOCKET 21P D317 407 007 6606 DIODE ES1...
  • Page 18 405 066 9903 TR 2SC2688(1)-K 405 067 0008 TR 2SC2688(1)-L C25EG92F-02 differs from C25EG92F-00 on the 405 067 0107 TR 2SC2688(1)-M following points, refer to C25EG92F-00 for all other Q640 406 007 1901 TR JC556A points. 406 007 1802 TR JC556B...

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