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Sanyo CP28WF1 Service Manual
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Sanyo CP28WF1 Service Manual

Sanyo CP28WF1 Service Manual

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SERVICE MANUAL Colour Television

Specifications

Power Source
. . . . . . . .AC220-240V, 50/60Hz.
Colour System . . . . . . . .PAL, SECAM, NTSC4.43, NTSC, PAL 60Hz
Television System . . . . .B/G, D/KK', I, M/M
Channel Coverage . . . . .VHF: 0-11, 5A
UHF: 28-69
CATV: S1-S41, X, Y, Z, Z+1, Z+2
Video IF . . . . . . . . . . . . . .38.0 MHz
Aerial Input Impedance . 75Ω
Ext. Terminals
AV1 (Rear): CENELEC Standard
Input (Composite video, RGB and audio-L/R)
Output (TV-output with composite video and audio-L/R)
S-Video Input (Din 4 pin, Separated Y/C signals input)
AV2 (Front): Phone jack (Video input and Audio-L/R input)
AV3 (Rear): Phone jack (Video input and Audio-L/R input)
DVD Input (Component Video Jack-Y and Video Jack CB/CR)
Monitor Output: Phone jack (Video monitor output and Audio-L/R monitor
output)
Headphone Jack: Mini Stereo Jack
Speaker . . . . . . . . . . . . . . 5 cm  12 cm  2 pcs.
Sound Output(RMS) . . . . 5W + 5W
Dimensions . . . . . . . . . . . 774 (W)  491 (H)  508 (D)mm
Weight . . . . . . . . . . . . . . . approx. 36.6 Kg
Specifications subject to change without notice
F8WFS
TV/AV MENU
CH
POWE R
FILE NO.
Model No. CP28WF1
Service Ref. No. CP28WF1-09
Product Code: 111371205
Original Version
Chassis Series: FB1-B
Give complete "SERVICE REF. NO." for parts
order or servicing. It is shown on the rating plate
at the cabinet back of the unit.
This T.V. receiver will not work properly in
foreign countries where the television
transmission system and power source dif-
fer from the design specifications. Refer to
the specification table.
REFERENCE NO.
(Australia)
SM
3010206

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Summary of Contents for Sanyo CP28WF1

  • Page 1: Specifications

    FILE NO. SERVICE MANUAL Colour Television Model No. CP28WF1 (Australia) Service Ref. No. CP28WF1-09 TV/AV MENU POWE R Product Code: 111371205 Specifications Power Source ..AC220-240V, 50/60Hz. Colour System ..PAL, SECAM, NTSC4.43, NTSC, PAL 60Hz Television System .

  • Page 2: Table Of Contents

    Contents Safety Notice ..........2 Chassis Block Diagram .

  • Page 3: Chassis Block Diagram

    Chassis Block Diagrams IC1401<Woofer Pre-Amp. IC> is not used VIF/SIF INPUT-3 INPUT-1 INPUT-2 MONITOR...

  • Page 4: Ic Block Diagrams

    IC Block Diagrams System Control...
  • Page 5 IC Block Diagrams IC201 < CPU/IF/Video/Chroma/Def.> QXXAVC534C7JAS YUV IN/OUT...

  • Page 6: Ic Block Diagrams

    IC Block Diagrams IC001 < Audio AMP.> TDA8944J VCC1 VCC2 OUT1- IN1- IN1+ OUT1+ N.C. N.C. TDA8944J N.C. OUT2- IN2- IN2+ OUT2+ STANDBY/ MODE MUTE LOGIC kΩ SHORT CIRCUIT TEMPERATURE PROTECTION kΩ GND1 GND2 IC501 < Vertical Output > LA7846N PUMP THERMAL PROTECTION...

  • Page 7: Cpu Port Functions

    CPU Port Functions Pin No. Function Name Function Pin No. Function Name Function VSSP2 Ground DVBO/IFVO/FMRO Digital Video Broadcast output / IF VSSC4 Ground video output / FM radio output VDDC4 Digital supply to SDACs (1.8V) DVBO/FMRO Digital Video Broadcast output / FM radio output VDDA3(3.3V) Supply (3.3V)

  • Page 8: Cpu Port Functions

    CPU Port Functions Pin No. Function Name Function Pin No. Function Name Function 3 rd G input / Y input P3.3/ADC3 Port 3.3 or ADC3 input G/YIN3 3 rd B input / P VSSC/P Digital ground for µ-Controller core input and periphery GND3 Ground 3 for TV-processor...

  • Page 9: Option Setting

    Option Setting After replacing the Memory IC (IC802) The memory IC (IC802), stores the option data of TV set and service adjustments data for each circuit, therefore, when the memory IC is replaced, it should be programmed to the following settings and “ SERVICE ADJUSTMENT” on pages 15 to 16.

  • Page 10: Service Adjustments With Replacing Memory Ic(Ic802)

    Service Adjustments with Replacing Memory IC(IC802) Note: The CPU (IC201) and memory IC (IC802) store the service adjustments data and controls data for each circuit.When the Memory IC(IC802) is replaced, some of the service adjustments should be readjusted to obtain the best performance. The necessary service adjustments are carried out by using the RC handset. Please set up the TV set with following steps [1] to [2].
  • Page 11 Service Adjustments with Replacing Memory IC(IC802) 1) To enter to the Service Mode 1. Press and hold the Volume + button on the front of TV set and press the Menu button on the Remote Control. Display for Software Version Information TV/AV MENU SERVICE...
  • Page 12 Service Adjustments with Replacing Memory IC(IC802) Following table shows the initial values which have been stored in the CPU ROM, and items for the service adjustments. Service mode adjustments table in CPU ROM DATA INITIAL DATA INITIAL ITEM RANGE SETUP DESCRIPTION ITEM RANGE SETUP...
  • Page 13 Service Adjustments with Replacing Memory IC(IC802) Following table shows the initial values which have been stored in the CPU ROM, and items for the service adjustments. Service mode adjustments table in CPU ROM DATA INITIAL DATA INITIAL ITEM RANGE SETUP DESCRIPTION ITEM RANGE SETUP...
  • Page 14 Service Adjustments with Replacing Memory IC(IC802) Following table shows the initial values which have been stored in the CPU ROM, and items for the service adjustments. Service mode adjustments table in CPU ROM DATA INITIAL DATA INITIAL ITEM RANGE SETUP DESCRIPTION ITEM RANGE SETUP...

  • Page 15: Service Adjustments With Replacing Memory Ic (Ic802)

    Service Adjustments with Replacing Memory IC(IC802) Following table shows the initial values which have been stored in the CPU ROM, and items for the service adjustments. Service mode adjustments table in CPU ROM DATA INITIAL DATA INITIAL ITEM RANGE SETUP DESCRIPTION ITEM RANGE SETUP...

  • Page 16: Dealer Mode

    Dealer Mode Cautions to the dealer!! When the TV will distributed to the market, it should be reset all received channel by following these procedure. 1. Press the TV/AV button on the TV set for a about 2 seconds until “MEMORY CLEAR” is displayed. (displayed in yellow colour) TV/AV MENU...

  • Page 17: Adjustment

    Adjustments IMPORTANT NOTICE Do not attempt to adjust the following service adjustments except when adjustments are required in servicing other- wise it may cause loss of performance and product safety. +B VOLTAGE ADJUSTMENT PCC ADJUSTMENT (1) Connect a DC voltmetre to TP-B and the ground. PCC ADJUSTMENT (2) Tune the receiver to an active channel and synchronized pic- (1) Receive cross hatch pattern, set the picture mode to Natural.

  • Page 18: Adjustment

    Adjustments OSD POSITIONING ADJUSTMENT HORIZONTAL ADJUSTMENT HORIZONTAL CENTRING ADJUSTMENT (1) Receive circular pattern and set bright and Contrast to (1) Receive circular pattern and set picture mode to “Dynamic”. Dynamic. (2) Enter to the service mode item No. 23 “HOR.SHIFT”. (2) Enter to the service mode and select item No.

  • Page 19: Purity And Convergence Adjustment

    Purity and Convergence Adjustment CAUTION: The Convergence and Purity adjustments have been made at the factory. Readjustment should be made only after picture tube or deflection yoke replacement, following the steps below: Signals: Use a pattern generator which can output red, Rubber wedge Figure 1 green, blue and white raster and crosshatch...
  • Page 20 Purity and Convergence Adjustment CONVERGENCE ADJUSTMENT Figure 5 FOUR-POLE MAGNET TABS Preparation: After carrying out purity adjustment and SIX-POLE MAGNET TABS before proceeding to convergence adjustment, provisionally insert the rubber wedge so that there is no vertical or ANGLE sideways play in the deflection yoke. OF TABS Signals: Display a crosshatch pattern.

  • Page 21: Mechanical Disassembly

    Mechanical Disassembly CABINET BACK REMOVAL 1. Refer to Figure 1, remove 16 screws. 2. Pull off cabinet back and remove. AV1 IN S-VIDEO AUDIO AUDIO (MONO) VIDEO ANT. 75Ω AV3/DVD MONITOR INPUT Figure 1. Cabinet Back Removal Protection Circuit This TV set has a built-in power supply protection circuit. It is provided to protect the TV set in case of a power supply circuit malfunctions.

  • Page 22: Cabinet Parts List

    CABINET FRONT-A-F8WFS 610 332 7433 DOOR-F8WFS 610 284 7741 DOOR COVER-C2SA 610 332 7464 DEC SHEET DOOR-F8WFS 645 040 4672 BADGE,SANYO*43.5X10L43.5 645 041 7269 BADGE,SANYO*43.5X10L43.5 610 332 7426 CABINET BACK-F8WFS 645 052 2697 ASSY,REMOCON JXMTA 610 297 9879 RC-BATTERY LID-JXMTA...

  • Page 23: Chassis Electrical Parts List

    Chassis Electrical Parts List F8WFS 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 24 F8WFS Ref. No. Part No. Description Ref. No. Part No. Description 4051739813 TR 2SC3928A1R Q203 4051648412 TR KTC3875S-GR-RTK 4051739912 TR 2SC3928A1S 4050144519 TR 2SC2412K T146 R Q006 4051648412 TR KTC3875S-GR-RTK 4050144618 TR 2SC2412K T146 S 4050144519 TR 2SC2412K T146 R 4050158724 TR 2SC2812-L6-TB 4050144618...
  • Page 25 F8WFS Ref. No. Part No. Description Ref. No. Part No. Description 4051631612 TR 2SC2812N-L6-TB0 4050158922 TR 2SC2812-L7-TB 4051739813 TR 2SC3928A1R 4051631612 TR 2SC2812N-L6-TB0 4051739912 TR 2SC3928A1S 4051739813 TR 2SC3928A1R Q451 4060121408 TR 2SK2010-CTV-YA14 4051739912 TR 2SC3928A1S Q461 4050296307 TR 2SB817-E Q866 4051648016 TR KTA1504S-GR-RTK...
  • Page 26 F8WFS Ref. No. Part No. Description Ref. No. Part No. Description C1004 4031573611 CERAMIC 100P J 4040848905 ELECT 10U M C1005 4040968207 ELECT 47U M 4031957748 ELECT 10U M 4040848202 ELECT 47U M C231 4031552210 CERAMIC 3300P K 4032006623 ELECT 47U M C232 4031640214...
  • Page 27 F8WFS Ref. No. Part No. Description Ref. No. Part No. Description C294 4033670417 CERAMIC 0.1U K C601 4040725909 MT-POLYEST 0.22U M 250V C295 4011506011 MT-GLAZE 0.000 ZA 1/10W 4040881704 MT-POLYEST 0.22U K 250V 4011057919 MT-GLAZE 0.000 ZA 1/16W 4040662204 MT-POLYEST 0.22U M 275V C401...
  • Page 28 F8WFS Ref. No. Part No. Description Ref. No. Part No. Description 4034140414 CERAMIC 470P K 4011052112 MT-GLAZE 18K JA 1/16W C642 4040559801 ELECT 220U M 200V R038 4011505816 MT-GLAZE 100K JA 1/10W C643 4032112532 ELECT 1000U M 4011050712 MT-GLAZE 100K JA 1/16W 4032112502 ELECT 1000U M...
  • Page 29 F8WFS Ref. No. Part No. Description Ref. No. Part No. Description 4011050613 MT-GLAZE 10K JA 1/16W R254 4011506219 MT-GLAZE 1K JA 1/10W R132 4010247440 CARBON 10K JA 1/6W 4011050514 MT-GLAZE 1K JA 1/16W R135 4011622919 MT-GLAZE 220 JA 1/10W R256 4012556510 MT-GLAZE 100 JA 1/10W...
  • Page 30 F8WFS Ref. No. Part No. Description Ref. No. Part No. Description R437 4010247034 CARBON 1K JA 1/6W R646 4010145132 CARBON 15K JA 1/4W R439 4010182751 CARBON 330 JA 1/4W 4010145251 CARBON 15K JA 1/4W 4010182850 CARBON 330 JA 1/4W R647 4010191852 CARBON 3.9K JA...
  • Page 31 F8WFS Ref. No. Part No. Description Ref. No. Part No. Description R847 4010247034 CARBON 1K JA 1/6W L804 6450082887 INDUCTOR,5.6U K R866 4011505915 MT-GLAZE 10K JA 1/10W DIODE 4011050613 MT-GLAZE 10K JA 1/16W R867 4011505915 MT-GLAZE 10K JA 1/10W D001 4072128818 DIODE KDS160-RTK 4011050613...
  • Page 32 F8WFS Ref. No. Part No. Description Ref. No. Part No. Description 4070134336 DIODE 1S2076A 4071490817 DIODE 1SS355-TE-17 D466 4070997822 ZENER DIODE MTZJ20A D801 4070124426 DIODE 1SS133 4070551717 ZENER DIODE RD20EB1 D802 4070124426 DIODE 1SS133 D467 4080093204 DIODE 1N4148 D803 4070124426 DIODE 1SS133 4070124426 DIODE 1SS133...
  • Page 33 F8WFS Ref. No. Part No. Description Ref. No. Part No. Description R711 4012562917 MT-GLAZE 150 JA 1/10W R1012 4012562719 MT-GLAZE 75 JA 1/10W 4011051412 MT-GLAZE 150 JA 1/16W 4011134412 MT-GLAZE 75 JA 1/16W R714 4010246730 CARBON 100 JA 1/6W R1023 4010276638 CARBON 75 JA...

  • Page 34: Component Locations

    Component Locations Main Board (Parts Side) IC501A IC501 -34-...
  • Page 35 Component Locations CRT Board (Parts Side) K1451 K17J R1466 R1749 C745 IC701-1 C1723 C1719 L1708 R1739 D1455 R1465 R1701 J1707 D1454 D1453 R714 L1707 JW66 D1452 J1455 D712 IC701 R704 C1750 R1735 D702 R724 C1702 C710 C1705 R715 C1748 L721 Q1702 IC1453 C1467...
  • Page 36 Component Locations MAIN Board (Solder Side) R1904 D1908 R1905 R1901 R1903 R1908 D1907 R1911 SW1906 SW1905 J1020 R1913 D1905 JP1901 R1902 D1906 R1912 J1017 D1903 R887 SW1904 SW1902 SW1901 R1907 A1901 SW1903 D1902 D1901 D850 R1011 R1906 D1909 D1003 Q886 JP102 D1001 R1013...
  • Page 37 Component Locations CRT Board (Solder Side) K1451 K17J R1466 R1749 C745 IC701-1 C1723 L1708 R1739 D1455 R1465 C1719 R1701 J1707 D1453 D1454 R714 JW66 J1455 D1452 L1707 C1705 D712 R704 IC701 C1750 R1735 D702 R724 C1702 C710 C1748 IC1453 C1751 R715 C1467 L721...

  • Page 38: Voltages And Waveforms Charts

    Voltages and Waveforms Charts Note: Voltages and waveforms were measured with colour bar signal and controls adjusted for normal picture. Main Board Q004 Q006 Q007 Q008 Q1005 Q111 Q112 Q113 Q202 Q203 Q204 Q003 E 5.6V E 1.7V E 0.5V 0.4V E 3.3V E 3.3V...
  • Page 39 Voltages and Waveforms Charts CRT Board Q1702 Q1706 Q1707 Q1708 Q1712 Q1709 Q1711 3.1V E 0.6V E 10.8V E 10.8V B 141.2V C 19.7V C 19.7V C 10.6V 71.2V C 71.2V B 3.7V B 10.66V E 10.6V B 1.2V E 140.5V 0.8V IC701 (Triple Video Output Amp.) Pin-1 2.2V...
  • Page 40 SANYO Electric Co., Ltd. Sept. /’06 /30 CPS Printed In Indonesia...
  • Page 41 8. This circuit diagram covers a basic or representative chassis only. W: Wire wounding Rated wattage (1/2W) POSISTER There SERVICE CP28WF1-09 C: Solid RESISTOR may be some components or partial circuit differences between the REF. NO. 12 X 10 =12K actual chassis and the circuit diagram.

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