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Sanyo CP25AF3T Service Manual

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SERVICE MANUAL Colour Television
Specifications
Power Source . . . . . . . .AC220-240V, 50/60Hz.
Colour System . . . . . . .PAL (AV Input: PAL/NTSC4.43/NTSC/PAL-60Hz)
Television System . . . . .B/G
Channel Coverage
. . . .Australian Channels
VHF: 0-11, 5A
UHF: 28-69
CATV: S1-S41, X, Y, Z, Z+1, Z+2
New Zealand Channels
VHF: 1-11
UHF: 21-69
CATV: S1-S41, X, Y, Z, Z+1, Z+2
Video IF . . . . . . . . . . . . . 38.0MHz
Aerial Input Impedance
75Ω
Ext. Terminals
Video inputs: Phono jack
S-Video Input
DVD Input: Component Video Jack-Y
Component Video Jack CB/CR
Audio inputs:Phono jack (R/L)
Video monitor outputs: Phono jack
Audio monitor outputs: Phono jack(R/L)
Headphone jack: Mini Stereo jack
Speakers ......... 5cm
12cm
Sound Output (Music) . . 7.5W + 7.5W
Dimensions . . . . . . . . . . 660(W)
Weight . . . . . . . . . . . . . .approx. 31.2 Kg
Specifications subject to change without notice
C2PZT
-
+
P
3 (1.0Vp-p, impedance 75Ω)
1 (Din 4 pin, Separate Y/C Signals Input)
1 (1.0Vp-p, impedance 75Ω)
1 (0.7Vp-p, impedance 75Ω)
3 (436mVrms, impedance more than 40KΩ)
1 (1.0Vp-p, 75Ω)
1(436mVrms, Impedance less than
1
2
520(H)
458(D)mm
FILE NO.
Model No. CP25AF3T
Service Ref. No. CP25AF3T-00
TIMER
TV/AV
1
2
3
4
5
6
7
8
0
9
-/--
P
ZOOM
MENU
P
VSM
SWAP
CH SCAN
P
P
TV/TEXT
i
X
?
ASM
SURROUND
A•B
BBE
BASS
JXMLA
Product Code: 1 113 523 39
Original Version
Chassis Series: FA1
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
600Ω)
the specification table.
REFERENCE NO.
(Australia/New Zealand)
SM
5110169

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Summary of Contents for Sanyo CP25AF3T

  • Page 1 FILE NO. SERVICE MANUAL Colour Television Model No. CP25AF3T (Australia/New Zealand) Service Ref. No. CP25AF3T-00 TIMER TV/AV -/-- ZOOM MENU SWAP CH SCAN TV/TEXT SURROUND A•B BASS JXMLA Specifications Power Source ..AC220-240V, 50/60Hz.

  • Page 2: Table Of Contents

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

  • Page 3: Chassis Block Diagram

    Chassis Block Diagrams (MAIN SIGNAL PROCESSING CIRCUIT)
  • Page 4 Chassis Block Diagrams (SYSTEM CONTROL)

  • Page 5: Ic Block Diagrams

    IC Block Diagrams IC201 < IF/Video/Chroma> QXXAVB629 AUDIO EXIT AUDIO H OUTPUT AUDIO DIRECT AF DC H-OSC BLACK PEAK B-Y IN R-Y IN SIF IN DEFLECTION HI VCC X TAL 3.58 X TAL 4.43 IF OUT VIDEO VIDEO COLOUR APC IDENT FILTER IF APC KILLER FILTER...
  • Page 6 IC Block Diagrams IC001 < Sound Output > LA4270 LA4270 Thermal Shutdown Over Voltage Ripple Filter IC301 <COMB Filter> TC9090ANM SECAM LINE VERTICAL CORING VIDEO MEMORY ENHANCER Y DAC Y-OUT PEDESTAL CLAMP CLIP CHROMA KILLER 4.43 NTSC DYNAMIC 1 LINE DOT C DAC C-OUT COMB FILTER...
  • Page 7 IC Block Diagrams IC501 < Vertical Output > LA7841 IC3401 <BBE> QBA3880AFS 24 DETL THERMAL PUMP DETR PROTECTION 22 DEFL DEFR LA7841 21 VCC – HI MID VCAR 20 VCAL R-MIX 19 L-MIX R-OUT L-OUT R-IN L-IN APFR – APFL HPFR HPFL LPFR...
  • Page 8 IC Block Diagrams IC1001 < AV Selector > MM1313BD MTV-V V1-V 34 V COMB V2-V V3-V STV-V V1-Y V2-Y V1-C -6dB 39 C V2-C MTV-L V1-L -6dB V2-L V3-L STV-L MTV-R V1-R 32 R -6dB V2-R 24 R V3-R STV-R BIAS BIAS ADDRESS...
  • Page 9 IC Block Diagrams IC3451 < Digital TV Sound Processor > TDA9875A SIF2 SIF1 (first general purpose I/O pin) (analog supply voltage 1) V DDA1 (second general purpose I/O pin) (first I C-bus slave SUPPLY INPUT SWITCH ADDR1 C-BUS V SSA1 address modifier) (supply ground 1) SOUND IF...

  • Page 10: Service Adjustments

    Service Adjustments MAIN BOARD TELETEXT BOARD T611 Q613 CONVERTER POWER. OUT SECAM BOARD TRANS. Q612 POWER. DRIVE Pincushion Adjustment B-Voltage Supply Adjustment FOCUS ADJUSTMENT PINCUSHION ADJUSTMENT (1) Receive the monochrome circular pattern. (1) Receive the cross hatch pattern signal. (2) Set the brightness to normal and contrast to maximum. (2) Adjust so that the vertical lines to become straight by (3) Adjust the focus control on the F.B.T for the best focus using VR463.

  • Page 11: Service Adjustments With Replacing Memory Ic(Ic802)

    Service Adjustments with Replacing Memory IC(IC802) Note: The CPU (IC801) 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.
  • Page 12 Service Adjustments with Replacing Memory IC(IC802) [2] Required Service Adjustments Readjust the following service adjustments. Adjustments Service Mode No. & Item Horizontal centre adjustment Item 01, H-P Vertical centre adjustment Item 02, V-P Vertical size adjustment Item 03, V-S OSD position adjustment Item 04, OSD RF AGC adjustment Item 05, AGC...

  • Page 13: Entering To Service Mode

    Service Adjustments with Replacing Memory IC(IC802) [Entering to Service Mode] Press and hold the MENU button on the TV set and press the [1] button on the remote control handset. Following setting items appears on the screen. Display for [H-P] Horizontal centre adjustment Read Status TIMER TV/AV...

  • Page 14: Service Mode Adjustments

    Service Mode Adjustments Following adjustments should be carried out when the memory IC is replaced. How to enter the service mode and adjust values, please refer to “ Entering to Service mode” on page 13. Item 05 [AGC] AGC Item 01 [H-P] HORIZONTAL CENTRE NOTE: Do not attempt this adjustment with weak signal.

  • Page 15: Protection Circuit

    Service Mode Adjustments Items 18-24 GREY SCALE (1) Receive the monochrome circular pattern. (2) Set the brightness and colour to normal, contrast to TIMER TV/AV Red Drive - Red Bias + maximum. (3) Enter to the service mode. Red Bias - Red Drive + (4) Select No.

  • Page 16: 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, Figure 1 green, blue and white raster and crosshatch pattern signals.

  • Page 17: Convergence Adjustment

    Purity and Convergence Adjustment CONVERGENCE ADJUSTMENT Figure 5 Preparation: After carrying out purity adjustment and before proceeding to convergence adjustment, provisionally insert the rubber wedge so that there is no vertical or sideways play in the deflection yoke. Signals: Display a crosshatch pattern. 1.

  • Page 18: Mechanical Disassemblies

    Mechanical Disassemblies CABINET BACK REMOVAL CHASSIS REMOVAL 1. Refer to Figure 1, remove 12 screws. 1. Remove cabinet back. 2. Pull off cabinet back and remove. 2. Discharge the picture tube anode (2nd anode lead) to the dag coating (picture tube grounding lead). 3.

  • Page 19: Cabinet Parts List

    RC-BATTERY LID 610 284 7734 DOOR 610 285 4909 CABINET FRONT 610 284 6881 INSTRUCTIONS MANUAL 610 284 7765 DEC SHEET DOOR 610 284 7833 SPRING PLATE 610 284 7741 DOOR COVER 645 040 4672 BADGE,SANYO 645 041 7269 BADGE,SANYO -19-...

  • Page 20: Chassis Electrical Parts List

    C2PZT 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 21 C2PZT Ref. No. Part No. Description Ref. No. Part No. Description 405 012 2101 TR 2SC1815-O 407 013 4207 DIODE 1S2076 405 012 2309 TR 2SC1815-Y 407 013 7109 DIODE 1S2473 405 020 7501 TR 2SC945A-PA D2004 407 063 8606 ZENER DIODE MTZJ5.1A 405 020 7709 TR 2SC945A-QA...
  • Page 22 C2PZT Ref. No. Part No. Description Ref. No. Part No. Description Q312 406 000 6804 TR 2SA1015-G(SAN)-TPE2 405 020 7907 TR 2SC945A-RA 405 001 7407 TR 2SA1015-O(SAN) Q3521 405 011 8401 TR 2SC1740S-Q 405 001 7605 TR 2SA1015-Y(SAN) 405 011 8500 TR 2SC1740S-R 405 004 3109 TR 2SA564A-Q(CU)
  • Page 23 C2PZT Ref. No. Part No. Description Ref. No. Part No. Description C307 403 149 9208 CERAMIC 0.01U Z C3530 403 043 9106 ELECT 47U M C308 403 041 8804 ELECT 10U M RESISTOR C310 403 149 9208 CERAMIC 0.01U Z C311 403 149 9208 CERAMIC...
  • Page 24 C2PZT Ref. No. Part No. Description Ref. No. Part No. Description R3501 401 105 0603 MT-GLAZE 10K JA 1/16W 405 006 1707 TR 2SA933S-Q R3502 401 105 1105 MT-GLAZE 12K JA 1/16W 405 006 1806 TR 2SA933S-R R3503 401 105 1600 MT-GLAZE 15K JA 1/16W Q1002...
  • Page 25 C2PZT Ref. No. Part No. Description Ref. No. Part No. Description 405 011 8609 TR 2SC1740S-S 405 020 7709 TR 2SC945A-QA 405 012 2002 TR 2SC1815-GR 405 020 7907 TR 2SC945A-RA 405 012 2101 TR 2SC1815-O Q7913 405 011 8401 TR 2SC1740S-Q 405 012 2309 TR 2SC1815-Y...
  • Page 26 C2PZT Ref. No. Part No. Description Ref. No. Part No. Description 405 012 2309 TR 2SC1815-Y C7970 403 041 9405 ELECT 10U M 405 157 0505 TR 2SC536NF-NPA RESISTOR 405 151 8705 TR 2SC536NG-NPA 405 020 7501 TR 2SC945A-PA R1001 401 105 2706 MT-GLAZE 220 JA 1/16W...
  • Page 27 C2PZT Ref. No. Part No. Description Ref. No. Part No. Description R7909 401 105 1907 MT-GLAZE 180 JA 1/16W D1304 407 099 6607 ZENER DIODE MTZJ-T-7212B R7910 401 105 0603 MT-GLAZE 10K JA 1/16W 407 054 3207 ZENER DIODE RD12EB2-T4 R7911 401 105 0603 MT-GLAZE...
  • Page 28 C2PZT Ref. No. Part No. Description Ref. No. Part No. Description 405 011 7503 TR 2SC1740-S R734 401 026 6609 CARBON 390 JA 1/6W 405 011 8401 TR 2SC1740S-Q R735 401 024 7004 CARBON 1K JA 1/6W 405 011 8500 TR 2SC1740S-R R736 401 026 9600...
  • Page 29 C2PZT Ref. No. Part No. Description Ref. No. Part No. Description 405 020 7907 TR 2SC945A-RA 405 151 8705 TR 2SC536NG-NPA Q140 406 000 6804 TR 2SA1015-G(SAN)-TPE2 405 020 7501 TR 2SC945A-PA 405 001 7407 TR 2SA1015-O(SAN) 405 020 7709 TR 2SC945A-QA 405 001 7605 TR 2SA1015-Y(SAN)
  • Page 30 C2PZT Ref. No. Part No. Description Ref. No. Part No. Description 405 151 8705 TR 2SC536NG-NPA 405 157 0505 TR 2SC536NF-NPA 405 020 7501 TR 2SC945A-PA 405 151 8705 TR 2SC536NG-NPA 405 020 7709 TR 2SC945A-QA 405 020 7501 TR 2SC945A-PA 405 020 7907 TR 2SC945A-RA 405 020 7709...
  • Page 31 C2PZT Ref. No. Part No. Description Ref. No. Part No. Description IC802 409 383 6805 IC 24LC08B/P C3809 403 046 9905 ELECT 4.7U M C3811 403 145 9905 CERAMIC 22P J CAPACITOR C3813 403 048 6308 ELECT 0.47U M CR355TM 403 075 9006 CERAMIC 150P K...
  • Page 32 C2PZT Ref. No. Part No. Description Ref. No. Part No. Description C615 403 056 9704 POLYESTER 0.01U J R173 401 105 7909 MT-GLAZE 0.000 ZA 1/16W 403 311 8602 POLYESTER 0.01U J R188 401 105 1907 MT-GLAZE 180 JA 1/16W C616 403 167 8702 CERAMIC...
  • Page 33 C2PZT Ref. No. Part No. Description Ref. No. Part No. Description R3805 401 105 7909 MT-GLAZE 0.000 ZA 1/16W R638 401 011 2708 CARBON 68K JA 1/2W R3807 401 105 6506 MT-GLAZE 680 JA 1/16W R639 401 025 8208 CARBON 22K JA 1/6W R3809...
  • Page 34 C2PZT Ref. No. Part No. Description Ref. No. Part No. Description R895 401 105 0603 MT-GLAZE 10K JA 1/16W D466 407 099 7802 ZENER DIODE MTZJ20A R898 401 105 0603 MT-GLAZE 10K JA 1/16W 407 055 1707 ZENER DIODE RD20EB1 408 041 0704 ZENER DIODE MTZJ20A VARIABLE RESISTOR...
  • Page 35 C2PZT Ref. No. Part No. Description Ref. No. Part No. Description D684 407 005 7308 DIODE EM01Z 405 020 7907 TR 2SC945A-RA 408 035 3100 DIODE TEM01Z Q3455 405 011 8401 TR 2SC1740S-Q 408 037 7205 DIODE EM01Z(LYS) 405 011 8500 TR 2SC1740S-R D686 407 099 5303...
  • Page 36 C2PZT Ref. No. Part No. Description Ref. No. Part No. Description C3486 610 012 3991 JUNPER LEAD C3487 610 012 3991 JUNPER LEAD C3492 403 215 2201 CERAMIC 0.01U K C3493 403 215 2201 CERAMIC 0.01U K RESISTOR R3451 401 105 0405 MT-GLAZE 100 JA 1/16W R3452...
  • Page 37 SANYO Electric Co., Ltd. A14800 Nov. /’00 /350 SI Printed in Japan...
  • Page 38 Rated wattage (1/2W) W: Wire wounding 1S1553, 1S2076A, 1S2471, 1N4148 may be some components or partial circuit differences between the SERVICE CP25AF3T-00 C: Solid 1S1555, 1S2473, 1S2076, DS442, 1N4148 actual chassis and the circuit diagram. REF. NO. 9. Parts specified with "X" are not installed in this model.
  • Page 39 L721 C743 C742 Q901 L2C1181KN 250EM 4.7CY (On the Socket Board) BXXAVB190SEH- 200V R724 TO:NICAM UNIT (K34DD) TO:NICAM UNIT (K34EE) 2SJ8.2K R726 Q701 Q702 Q711 Q712 Q721 Q722 Q731 Q732 Q721-A1 R743 8.2K R742 R725 Q721 B 12.3V B 2.3V B 12.3V 2.0V B 12.3V...

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