Sanyo CP28WF2 Service Manual

Colour television

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Instruction manual (17 pages)

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Page 1 FILE NO. SERVICE MANUAL Colour Television Model No. CP28WF2 (Australia/New Zealand) Service Ref. No. CP28WF2-00 TV/AV MENU Specifications Product Code:111371200 Power Source ..AC220-240V, 50/60Hz. Colour System ..PAL, SECAM, NTSC4.43, NTSC Original Version Television System .
Page 2: Table Of Contents
Contents Safety Notice ..........2 Chassis Block Diagram .
Page 3: Chassis Block Diagram
Chassis Block Diagrams K1101 K1003 K1002 K1001 AV1 SCART AV3 IN (FRONT) MONITOR OUT AV2 IN...
Page 4: Ic Block Diagrams
IC Block Diagrams IC201 < IF/Video/Chroma/Def.> TB1262F Bed pin Cync. out ABCL IN Y sm H.AFC EXT. B IN EXT. G IN DC Resistor EXT. R IN BLACK DET VM OUT YS(YCbCr) B OUT Cb2/B IN G OUT YCbCr2 Cbr2/R IN YCbCr3 R OUT Y2/CVBS2/G IN...
Page 5 IC Block Diagrams IC001 < Audio AMP.> TA8200AH RF I 27K INVERTING INPUT (1) OUTPUT-L NON INVERTING INPUT (1) SUR/MUTING MUTE PROTECTION REFERENCES TURN ON AND OFF PROTECTION NON INVERTING INPUT (2) OUTPUT-R INVERTING INPUT (2) RF I 27K TDA7263M IC501 <...
Page 6 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 7: Cpu Port Functions
CPU Port Functions Pin No. Function Name Function IN/OUT Pin No. Function Name Function IN/OUT LED2 Brightness control of LED RC IN RC signal input S-VIDEO SW S-video switch RESET Reset input H-Phase H-Phase (not used) 50/60 50/60Hz output (50Hz=H) OSC OUT Oscillator (output) H-BLK...
Page 8: Option Setting
Option Setting After replacing the Memory IC (IC803) The memory IC (IC803), 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 9 to 12.
Page 9: Service Adjustments
Service Adjustments Note: Some items of the service adjustments for this chassis are controlled by the CPU (IC801), and the adjustments are carried out by using the RC handset. After replacing the Memory IC (IC803) The memory IC (IC803), stores the service adjustment data for each circuit, therefore, when the memory IC is replaced, it should be programmed by using “OPTION SETTING”...
Page 10 Service Adjustments 1) To enter to the Service Mode Press and hold the GREEN button on the remote control and then press the Programme down button (CHM) on the front panel of the TV. Press the Programme down button to select the mode required (Regular, Image, others and TB12**). Then press the F/OK button to select the mode.
Page 11: Focus 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. DRIVE ADJUSTMENT +B VOLTAGE ADJUSTMENT (6) Select item No. 3. “Regular 03 GRY” (G-Drive) or No.04 “Regular 04 GRY”...
Page 12 Adjustments OSA POSITIONING ADJUSTMENT HORIZONTAL ADJUSTMENT HORIZONTAL CENTRING ADJUSTMENT (1) Receive circular pattern and set screen mode to “FULL”. (1) Receive circular pattern and set screen mode to “FULL”. (2) Enter to the service mode and select mode “Regular”, and (2) Enter to the service mode and select mode “Image”, and select item No.
Page 13: 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 Rubber wedge green, blue and white raster and crosshatch...
Page 14: Convergence Adjustment
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 15: Mechanical Disassembly
Mechanical Disassembly CABINET BACK REMOVAL 1. Refer to Figure 1, remove 14 screws. 2. Pull off cabinet back and remove. AV2 IN MONITOR VIDEO (MONO) S-VIDEO AUDIO AV1 IN ANT. 75Ω 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 16: Cabinet Parts List
610 312 8436 CABINET FRONT-F8WA 610 312 8467 DOOR-F8WA 610 312 8474 DEC SHEET DOOR-F8WA 610 284 7741 DOOR COVER-C2SA BADGE,SANYO 645 040 4672 645 041 7269 BADGE,SANYO 610 291 6836 SPRING PLATE-S6DK 610 312 8450 CABINET BACK-F8WA 610 313 0309...
Page 17: Chassis Electrical Parts List
Chassis Electrical Parts List F8WA 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 18 F8WA Ref. No. Part No. Description Ref. No. Part No. Description 405 163 1602 TR 2SC2812N-L6-TB0 Q651 405 089 0000 TR 2SA1707-S 405 163 1701 TR 2SC2812N-L7-TB0 405 089 0109 TR 2SA1707-T 405 173 9803 TR 2SC3928A1R 405 009 6907 TR 2SB985-S 405 173 9902 TR 2SC3928A1S...
Page 19 F8WA Ref. No. Part No. Description Ref. No. Part No. Description C008 403 164 0204 CERAMIC 0.1U Z 403 317 4608 CERAMIC 0.33U K C009 403 164 0204 CERAMIC 0.1U Z C505 403 036 6600 CERAMIC 8P D 500V C010 404 089 7200 ELECT 100U M...
Page 20 F8WA Ref. No. Part No. Description Ref. No. Part No. Description R006 401 025 1605 CARBON 1.5K JA 1/6W R516 401 027 5502 CARBON 6.8K JA 1/6W R007 401 026 9303 CARBON 47 JA 1/6W R517 401 105 3406 MT-GLAZE 27K JA 1/16W R008 401 025 1605...
Page 21 F8WA Ref. No. Part No. Description Ref. No. Part No. Description COIL D504 407 149 0807 DIODE 1SS355-TE-17 L1101 645 001 4567 INDUCTOR,10U K D603 407 006 6300 DIODE ERC05-10BV1 L1106 645 001 4567 INDUCTOR,10U K 407 009 6901 DIODE RM11C L1921 645 002 1787 CORE,PIPE...
Page 22 F8WA Ref. No. Part No. Description Ref. No. Part No. Description 645 019 4887 SWITCH,PUSH 1P-1TX1 405 002 6706 TR 2SA1179-M6-TB 645 027 7382 SWITCH,PUSH 1P-1TX1 405 002 6904 TR 2SA1179-M7-TB SW1956 645 003 4701 SWITCH,PUSH 1P-1TX1 405 163 1503 TR 2SA1179N-M6-TB 645 019 4887 SWITCH,PUSH 1P-1TX1...
Page 23 F8WA Ref. No. Part No. Description Ref. No. Part No. Description 405 173 9902 TR 2SC3928A1S C1200 404 084 8905 ELECT 10U M Q491 405 014 4509 TR 2SC2412K T146 R 403 049 4204 ELECT 10U M 405 014 4608 TR 2SC2412K T146 S C1202 404 087 4904...
Page 24 F8WA Ref. No. Part No. Description Ref. No. Part No. Description C242 403 207 0307 CERAMIC 1U Z 403 322 6109 CERAMIC 2.2U Z C243 403 314 5905 CERAMIC 0.47U K C833 403 157 2505 CERAMIC 27P J 403 307 8807 CERAMIC 0.47U K C834...
Page 25 F8WA Ref. No. Part No. Description Ref. No. Part No. Description R3441 401 105 1600 MT-GLAZE 15K JA 1/16W L3457 645 011 0252 INDUCTOR,2.2U K R3442 401 105 1600 MT-GLAZE 15K JA 1/16W L3459 401 105 7909 MT-GLAZE 0.000 ZA 1/16W R3443 401 105 1600 MT-GLAZE...
Page 26 F8WA Ref. No. Part No. Description Ref. No. Part No. Description C1028 403 215 2201 CERAMIC 0.01U K K1003 645 032 1979 JACK,RCA-3 C1031 403 113 3805 CERAMIC 1000P K K1004 645 016 0806 SOCKET,DIN 4P C1034 403 157 3601 CERAMIC 100P J C1037...
Page 27 F8WA Ref. No. Part No. Description Ref. No. Part No. Description 610 237 1000 PIPE CORE DIODE D741 401 105 7909 MT-GLAZE 0.000 ZA 1/16W D742 401 105 7909 MT-GLAZE 0.000 ZA 1/16W D751 407 149 0807 DIODE 1SS355-TE-17 D752 407 149 0807 DIODE 1SS355-TE-17 D753...
Page 28: Component Locations
Component Locations Main Board (Parts Side) CH_UP VOL_UP VOL_DOWN MENU TV/AV CH_DOWN A1901 J527 SW1951 SW1952 SW1953 SW1954 SW1955 SW1956 D1951 L1901 K1101 K1921 K19E JS603 K19E-2 K19E-1 SW691H1 PS691 JS695 JS601 SW691H2 R024 C010 C006 JS602 C015 RL691 JS604 RL691H2 J513 RL691H1...
Page 29 Component Locations BACK Board (Parts Side) Sub Board (Parts Side) B10E3320B R823 R826 R824 J280 J271 R884 K1002 K1003 (SOLDER SIDE) R815 JWEM1 AV2 IN MONITOR OUT J273 IC1050 J277 VIDEO/Y SW YELLOW R885 D826 R817 R821 R808 R822 J276 WHITE R881 JWEM1A...
Page 30: 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 Q001 Q431 Q432 Q043 Q044 Q451 Q461 Q462 Q611 Q612 Q613 Q641 Q642 B 1.7V B -0.5V B -0.4V 0.5V B 12.4V B -0.9V...
Page 31: Crt Board
Voltages and Waveforms Charts IC201-pin39 IC1201-pin1 Terminal KP-pin1 Terminal KP-pin2 Terminal KP-pin3 IC201-pin47 <V drive> <H drive> <VIDEO OUT> <R out> <G out> <B out> 1.7Vp-p 0.9Vp-p 4.2Vp-p 5.1Vp-p Horiz. 4.2Vp-p 3.9Vp-p 2.0Vp-p Vert. Terminal K30EE-pin4 Terminal K30DD-pin12 <VIDEO out> <Video Monitor out>...
Page 32 SANYO Electric Co., Ltd. A14800 /Feb. /’04 /30 BB Printed in Japan...
Page 33 Product safety should be considered when a component replacement is made in any SERVICE F: Mylar film CP28WF2-00 DIODE ELECTRIC 7. Waveform were taken with PAL colour bar and controls adjusted for normal picture. Waveforms were taken by using a area of a receiver.
Page 34 TO CRT K7P ASSY,PWB,SUB F8WA J10EA050N: J10KR050N 1AA0B10E6870A JW11 JW12 JW13 A101 F1BEB0250 R885 KCPA TUNER(WITH PLL & BAND SW) R821 R822 J10AM050N R835 Q808 L861 Q802 L2B95R6KN C811 R840 R834 1/16GJ D1051 R860 C818 1/16GJ UDZS R839 270C 1/16GJ KK4700 10BG 5.6KC...

Sanyo CP28WF2 Service Manual

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