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Sanyo CE25DN9-B Service Manual

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Colour Television
Service Manual
Model CE25DN9-B
Service Ref. No. CE25DN9-B-01
PRODUCT CODE: 111360913
ORIGINAL VERSION: Chassis No. EB8-A
Please use Schematic Diagram SKP20435
inserted with this Service Manual.
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
Contents
Safety precautions/Specifications ..................................................................................................................2
Block diagrams ..............................................................................................................................................3
Cabinet Disassembly ......................................................................................................................................4
Adjustment and Repair Procedures............................................................................................................5~9
CPU Functions ..............................................................................................................................................................................10~11
Component Locations ..................................................................................................................................12
IC Block Diagrams ..................................................................................................................................13~15
Pin description of semiconductors ................................................................................................................16
Part Description and reading of schematic diagram ....................................................................................17
Cabinet Parts List/TV Stand parts list ..........................................................................................................18
Electric Parts List ....................................................................................................................................19~24
Part No. SKSM0711
C5VRL
JUNE 2004
25DN9
CE
-B

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  • Page 1: Table Of Contents

    Colour Television 25DN9 Service Manual Model CE25DN9-B Service Ref. No. CE25DN9-B-01 PRODUCT CODE: 111360913 ORIGINAL VERSION: Chassis No. EB8-A Please use Schematic Diagram SKP20435 inserted with this Service Manual. 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.
  • Page 2 Colour Television 28DN9 Service Manual Model CE28DN9-B Service Ref. No. CE28DN9-B-01 PRODUCT CODE: 111373100 ORIGINAL VERSION: Chassis No. EB8-A Please use Schematic Diagram SKP20443 inserted with this Service Manual. 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.
  • Page 3 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 certain that all the protective devices are installed when a service is performed on the primary of the properly, such as, control knobs, adjustment covers converter transformer of the set.

  • Page 4: Block Diagrams

    BLOCK DIAGRAM This is a diagram for all models and therefore differs slightly from the actual block diagram. Outline K1101 K1001 K1002 SCART 2 SCART 1 C7WAS...

  • Page 5: Cabinet Disassembly

    CABINET DISASSEMBLY CABINET BACK DISASSEMBLY 1. Remove 9 screws(A) for 28” 2. Pull out the cabinet back. C7WASÍ...
  • Page 6 OPTION SETTING [After replacing the Memory IC (IC801)] The memory IC, IC801, 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 6 to 9.
  • Page 7 SERVICE ADJUSTMENTS After replacing the Memory IC (IC801)] The memory IC, IC801, stores the service adjustments data for each circuit, therefore, when the memory IC is replaced, it should be programmed by using “OPTION SETTING” on previous page and the following adjustments. ADJUSTABLE SERVICE ADJUSTMENT Item No.
  • Page 8 To enter to the Service Mode + Press and hold the GREEN button on the remote control and then press the P button on the cabinet. To select the service item and change data value + To select the adjustment item, use the P or P button.
  • Page 9 ADJUSTMENTS IMPORTANT NOTICE Do not attempt to adjust the following service adjustments except when adjustments are required in servicing otherwise it may cause loss of performance and product safety. + B VOLTAGE ADJUSTMENT PCC ADJUSTMENT 1. Receive white raster pattern. PCC ADJUSTMENT 2.
  • Page 10 CORNER ADJUSTMENT VERTICAL ADJUSTMENT 1. Receive cross hatch pattern and set screen mode to “FULL”. VERTICAL CENTRING ADJUSTMENT 2. Enter the service mode and select item no. 25. UC 1. Receive circular pattern and set screen mode to PARABOLA for top corner adjustment OR item no. “FULL”.

  • Page 11: Cpu Functions

    CPU PORT FUNCTIONS Pin No Function Name Function In/Out 1v8_1 1.8v Supply 3.3v Supply Vref 3.3v Reference Vref V Ref Gnd Vref 3.3v Reference Vref V Ref Gnd Vref 3.3v Reference XTAL IN Clock Oscillator XTAL OUT Clock Oscillator Vguard sw Dec Dig 1.8v source supply 5v Supply...
  • Page 12 CPU PORT FUNCTIONS (continued) Pin No Function Name Function In/Out Scan Velocity Modulation FbiSo Flyback In SandCastle Out In/out Hout Horizontal Drive Out VssComb V5Comb 5v Supply Vin/R2/Pr Scart 2 R-In Uin/B2/Pb Scart 2 B-In Yin/G2/Y Scart 2 G-In Y Sync Y Sync Y out Yout...

  • Page 13: Component Locations

    COMPONENT LOCATIONS MAIN BOARD / FRONT BOARD / CRT BOARD K1101 B10E33300 A1901 D1911 K1101 R692 R699 SW1901 SW1902 SW1903 SW1904 K031 R637 R691 C023 KF-1 B10E3330B KR-2 C650 SW601 KEM1 KF-2 PS601 KR-1 L601 KE-1 KE-2 K701 R602A KFF-1 KFF-2 C691 C655...

  • Page 14: Ic Block Diagrams

    IC BLOCK DIAGRAMS IC001 LA42052 <Audio Output> STAND BY INPUT AMPLIFIER OUTPUT AMPLIFIER IN 1 OUT 1 REFERENCE AMPLIFIER THERMAL PROTECTION CIRCUIT PRE GND POWER OUT 2 IN 2 OUTPUT AMPLIFIER INPUT AMPLIFIER RIPPLE FILTER POP NOISE PREVENTION BLOCK RIPPLE FILTER IC501 LA78041 <Vertical Output>...
  • Page 15 IC601 Block Diagram TN6Q03/04 VDD pin Input Under voltage protection Internal power supply Falling edge detection EDGE pin Oscillator Over heat protection Burst On Latch Circuit Burst Off Over voltage protection Latch for Burst circuit Reference Voltage DRAIN pin Over current/FB comparator Logic Driver FB pin...
  • Page 16 -15- C7WAS...
  • Page 17 PIN DESCRIPTION OF SEMICONDUCTORS Diode Diode K: Cathode A: Anode Transistor/FET Transistor/FET C: Collector D: Drain B: Base G: Gate Index E: Emitter S: Source C1 C2 C1 C2 (GND) RESET (IN) (OUT) Index Index Index Index Index Index Index Index Index -16-...
  • Page 18 PARTS DESCRIPTION AND READING IN SCHEMATIC DIAGRAM 1. The parts specification of resistors, capacitors and Resistor Reading coils are expressed in designated code. Please Example 1/2 D J 10K B check the parts description by the following code table. Characteristic 2.
  • Page 19 DOOR-C6AA 665 000 2654 DEC IND-C7WA 610 253 2449 AC CORD HOLDER-U-D4VA 610 261 3032 COIL SPRING-E7GCS 645 043 5058 BADGE,SANYO*53.5X12L53.3 610 265 4202 HOLDER DC GBR-F3SC ACCESSORIES JXPLA RC TRANSMITTER 645 054 9533 BATTERY ENERGIZER R6SH2VP 665 000 2647...
  • Page 20 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. It is particularly recommended that only parts specified on the following parts list be used for components replacement pointed out by the mark Note: Parts order must contain Service Ref.
  • Page 21 Description Ref. No. Part No. Part No. Ref. No. Description C109 403 113 3815 GRM188R71H102KA01D PT115 C269 403 164 0214 GRM188F51E104ZA01D PT115 C110 403 113 4119 GRM188R71H222KA01D PT115 C271 403 258 3619 25 YK 33 M TA 0511 C1101 403 113 3815 GRM188R71H102KA01D PT115 C272 403 215 2211...
  • Page 22 Description Ref. No. Part No. Part No. Ref. No. Description C685 403 195 8824 ELECT 100U M D613 407 099 5224 ZENER DIODE MTZJ-T72-5.1B C686 403 199 9718 25 YK 470 M TA K1012 D614 407 091 6724 DIODE AP01C C691 403 209 4709 ELECT...
  • Page 23 Description Ref. No. Part No. Part No. Ref. No. Description R1022 401 105 1412 MT-GLAZE 150 JA 1/16W TRANSISTOR Q001 405 014 4519 TR BC847B,235 10000/REEL R1023 401 027 6638 CARBON 75 JA 1/6W 52MM Q1001 405 134 5925 TR BC857B,235 10000/REEL R1024 401 105 0514 MT-GLAZE...
  • Page 24 Description Ref. No. Part No. Part No. Ref. No. Description R238 401 027 5532 CARBON 6K8 JA 1/6W 52MM R516 401 027 5532 CARBON 6K8 JA 1/6W 52MM R239 401 105 1115 MT-GLAZE 12K JA 1/16W R517 401 105 1610 MT-GLAZE 15K JA 1/16W R246...
  • Page 25 All information in this manual is correct at the start of KE-2 645 008 4058 TERMINAL PLUG production. Sanyo reserves the right to modify components KFF-1 645 008 4058 TERMINAL PLUG and procedures in order to comply with their continuous...
  • Page 26 BLOCK DIAGRAM A1901 RC RECEIVER SPEAKER A101 IC001 TUNER SP901 AUDIO AMPLIFIER SP902 Q866 IF IN KEY SW 108 109 X121 SIF IN X122 T611 C BUS CONTROL CONVERTER SC_1 B-IN IC801 SC_1 G-IN MEMORY TO UOC PINS 3,100,117,118,124 SC_1 R-IN Q202 SC1 FB IN Q1001...
  • Page 27 MAIN / CRT BOARD SW1904 SW1903 SW1902 SW1901 K031 K1101 A1901 C1107 C1106 R1916 R1915 R637A R1914 R1913 D1911 R699 R637-3 Q861 R637-2 R637-1 R692 RL601H3 RL601H2 R691 R637 L607 SW601 KF-1 C032 C023 L601 L601-1 L601-2 R669 KEM1 L601A-2 KR-2 Q602 C650...
  • Page 28 K1101 B4J12B02900 C402 KK0.01GQ IC001 LA42052-E IC001-1 1AA2HEA0238-- K031 L1108 L1107 L2B9100KB L2B9100KB KEM2 B4J12B05000 J30B0250N JW2-JW3 :J12B05400 R1101 8MKK012AA 1/16GJ R1106 2.2KC C1101 C1106 C057 J10EA020N 1/16GJ KK1000GQ KK1000GQ C040 KK1000GQ 2.2KC KK2200GQ C021 C006 R011 R012 C009 25EM100 1/16GJ C036 25EM47CD...
  • Page 29 SW601 S10B6340N A1901 U20B20900 SW1904 SW1903 SW1901 SW1902 D1101 S10B1170N S10B1170N S10B1170N S10B1170N SW601-1 2400010 1SS355 KE-2 KE-1 J30B0250N J30B0250N L601A L608 F35B0570N PS601 F601-2 :F35B1020N F601 R601 DHXAAEV0065 Z20103--- J20B00100 4A250VTCSL D1911 1/2DJ220K :J20B0170J L601A-3 L601A-4 W901 2400030 SW601-2 D1102 2400030 2400010...
  • Page 30 MAIN BOARD (Circuit side) K1101 B10E33300 A1901 D1911 K1101 R692 R699 SW1901 SW1902 SW1903 SW1904 K031 R637 R691 C023 KF-1 B10E3330B C650 KR-2 SW601 KEM1 KF-2 PS601 KR-1 L601 KE-1 KE-2 K701 R602A KFF-1 KFF-2 C691 C655 T4AH250V T4AL250V C022 R648 F601-1 F601-2...
  • Page 31 To enter to the Service Mode OPTION SETTING + Press and hold the GREEN button on the remote control and then press the P button on the cabinet. [After replacing the Memory IC (IC801)] The memory IC, IC801, stores the option data of TV set and service adjustments data for each circuit, therefore, To select the service item and change data value when the memory IC is replaced, it should be programmed to the following settings and “SERVICE ADJUSTMENT”...
  • Page 32 CPU PORT FUNCTIONS Pin No Function Name Function In/Out Pin No Function Name Function In/Out Scan Velocity Modulation FbiSo Flyback In SandCastle Out In/out Hout Horizontal Drive Out 1v8_1 1.8v Supply 3.3v Supply VssComb Vref 3.3v Reference V5Comb 5v Supply Vref V Ref Gnd Vin/R2/Pr...
  • Page 33 M, N : Polypropylene 7. Waveforms were taken with colour bar and controls adjusted wise noted. CE25DN9-B MODEL NUMBER the part service manual be used for Z : Metallized paper isolating transformer between for normal picture.
  • Page 34 MAIN / CRT BOARD SW1904 SW1903 SW1902 SW1901 K031 K1101 A1901 C1107 C1106 R1916 R1915 R637A R1914 R1913 D1911 R699 R637-3 Q861 R637-2 R637-1 R692 RL601H3 RL601H2 R691 R637 L607 SW601 KF-1 C032 C023 L601 L601-1 L601-2 R669 KEM1 L601A-2 KR-2 Q602 C650...
  • Page 35 K1101 B4J12B02900 IC001 LA42052-E IC001-1 1AA2HEA0238-- K031 L1108 L1107 KEM2 L2B9100KB L2B9100KB B4J12B05000 J30B0250N JW2-JW3 :J12B05400 R1101 8MKK012AA 1/16GJ R1106 2.2KC C1101 C1106 C057 J10EA020N 1/16GJ KK1000GQ KK1000GQ C040 KK1000GQ 2.2KC KK2200GQ C021 C006 R012 R011 25EM100 C009 1/16GJ C036 25EM47CD 10KC 0.012GQ...
  • Page 36 KK1000GQ CJ100CGQ KK1000GQ 6.8K :2SB1274R 2SC536-E 390KC :2SB1274S D469 R468 :2SB1565E :2SB1565F D489 D464 R463 R1031 MTZJ15A 1/10GJ R1032 25-C5VRL / CE25DN9-B C468 1/16GJ3.3KC C467 R462 25EM22CD D465 D463 16KZ1FA D466 EB8A 0SDC5VRL---01 D1019 1/16GZ0C 1SS355 1SS133 MTZJ20B C470 UDZS10BG KK0.022GQ...
  • Page 37 MAIN BOARD (Circuit side) K1101 B10E33300 A1901 D1911 K1101 R692 R699 SW1901 SW1902 SW1903 SW1904 K031 R637 R691 C023 KF-1 B10E3330B C650 KR-2 SW601 KEM1 KF-2 PS601 KR-1 L601 KE-1 KE-2 K701 R602A KFF-1 KFF-2 C691 C655 T4AH250V T4AL250V C022 R648 F601-1 F601-2...
  • Page 38 + Press the MENU button or turn off the TV set by using the Mains switch. ADJUST : EXIT : RECALL OPTION MODE FOR CE25DN9-B-01 To set the Option Mode + Highlight the desired option item by using the P or P button .
  • Page 39 CPU PORT FUNCTIONS Pin No Function Name Function In/Out Pin No Function Name Function In/Out Scan Velocity Modulation FbiSo Flyback In SandCastle Out In/out 1v8_1 1.8v Supply Hout Horizontal Drive Out 3.3v Supply VssComb Vref 3.3v Reference V5Comb 5v Supply Vref V Ref Gnd Vin/R2/Pr...
  • Page 40 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 certain that all the protective devices are installed when a service is performed on the primary of the properly, such as, control knobs, adjustment covers converter transformer of the set.

  • Page 41: Block Diagrams

    BLOCK DIAGRAM This is a diagram for all models and therefore differs slightly from the actual block diagram. Outline K1101 K1002 K1001 SCART 2 SCART 1 C5VRL...

  • Page 42: Cabinet Disassembly

    CABINET DISASSEMBLY CABINET BACK DISASSEMBLY 1. Remove 9 screws(A) for 25” 2. Pull out the cabinet back. C5VRL...
  • Page 43 COUNTRY WIDE TEXT NO SIGNAL ADJUST : EXIT : RECALL OPTION MODE FOR CE25DN9-B-01 To set the Option Mode + Highlight the desired option item by using the P or P button . + To switch the option mode, use the Volume - (LEFT) or Volume + (RIGHT) button.
  • Page 44 SERVICE ADJUSTMENTS After replacing the Memory IC (IC801)] The memory IC, IC801, stores the service adjustments data for each circuit, therefore, when the memory IC is replaced, it should be programmed by using “OPTION SETTING” on previous page and the following adjustments. ADJUSTABLE SERVICE ADJUSTMENT Item No.
  • Page 45 To enter to the Service Mode + Press and hold the GREEN button on the remote control and then press the P button on the cabinet. To select the service item and change data value + To select the adjustment item, use the P or P button.
  • Page 46 ADJUSTMENTS IMPORTANT NOTICE Do not attempt to adjust the following service adjustments except when adjustments are required in servicing otherwise it may cause loss of performance and product safety. + B VOLTAGE ADJUSTMENT PCC ADJUSTMENT 1. Receive white raster pattern. PCC ADJUSTMENT 2.
  • Page 47 CORNER ADJUSTMENT VERTICAL ADJUSTMENT 1. Receive cross hatch pattern and set screen mode to “FULL”. VERTICAL CENTRING ADJUSTMENT 2. Enter the service mode and select item no. 25. UC 1. Receive circular pattern and set screen mode to PARABOLA for top corner adjustment OR item no. “FULL”.
  • Page 48 CPU PORT FUNCTIONS Pin No Function Name Function In/Out 1v8_1 1.8v Supply 3.3v Supply Vref 3.3v Reference Vref V Ref Gnd Vref 3.3v Reference Vref V Ref Gnd Vref 3.3v Reference XTAL IN Clock Oscillator XTAL OUT Clock Oscillator Vguard sw Dec Dig 1.8v source supply 5v Supply...
  • Page 49 CPU PORT FUNCTIONS (continued) Pin No Function Name Function In/Out Scan Velocity Modulation FbiSo Flyback In SandCastle Out In/out Hout Horizontal Drive Out VssComb V5Comb 5v Supply Vin/R2/Pr Scart 2 R-In Uin/B2/Pb Scart 2 B-In Yin/G2/Y Scart 2 G-In Y Sync Y Sync Y out Yout...

  • Page 50: Component Locations

    COMPONENT LOCATIONS MAIN BOARD / FRONT BOARD / CRT BOARD K1101 B10E33300 A1901 D1911 K1101 R692 R699 SW1901 SW1902 SW1903 SW1904 K031 R637 R691 C023 KF-1 B10E3330B KR-2 C650 SW601 KEM1 KF-2 PS601 KR-1 L601 KE-1 KE-2 K701 R602A KFF-1 KFF-2 C691 C655...

  • Page 51: Ic Block Diagrams

    IC BLOCK DIAGRAMS IC001 LA42052 <Audio Output> BLOCK DIAGRAM OF IC001 STAND BY QLA42052-E---N INPUT AMPLIFIER OUTPUT AMPLIFIER IN 1 REFERENCE AMPLIFIER THERMAL PROTECTION CIRCUIT PRE GND POWER IN 2 OUTPUT AMPLIFIER INPUT AMPLIFIER RIPPLE FILTER POP NOISE PREVENTION BLOCK RIPPLE FILTER IC501 LA78041 <Vertical Output>...
  • Page 52 IC601 Block Diagram TN6Q03/04 VDD pin Input Under voltage protection Internal power supply Falling edge detection EDGE pin Oscillator Over heat protection Burst On Latch Circuit Burst Off Over voltage protection Latch for Burst circuit Reference Voltage DRAIN pin Over current/FB comparator Logic Driver FB pin...
  • Page 53 -15- C5VRL...
  • Page 54 PIN DESCRIPTION OF SEMICONDUCTORS Diode Diode K: Cathode A: Anode Transistor/FET Transistor/FET C: Collector D: Drain B: Base G: Gate Index E: Emitter S: Source C1 C2 C1 C2 (GND) RESET (IN) (OUT) Index Index Index Index Index Index Index Index Index -16-...
  • Page 55 PARTS DESCRIPTION AND READING IN SCHEMATIC DIAGRAM 1. The parts specification of resistors, capacitors and Resistor Reading coils are expressed in designated code. Please Example 1/2 D J 10K B check the parts description by the following code table. Characteristic 2.

  • Page 56: Cabinet Parts List

    CABINET PARTS LIST FOR MODEL CE25DN9-B-01 Note: Parts order must contain Service Ref. No., Part No., and descriptions. JXPLB Item Part No. Description CABINET PARTS 610 278 4848 CABINET FRONT-C5VA 610 297 9183 BUTTON POWER-C5WA 610 297 9190 BUTTON UNITED-C5WA...
  • Page 57 Note: Parts order must contain Service Ref. No., Part No., and descriptions. Description Part No. Ref. No. Chassis construction CE25DN9-B-01 013C5VRL ELECTRICAL PARTS (PAGE 19) 1AA0B10H069AA ASSY,PWB,MAIN C5VRL...
  • Page 58 Description Description Ref. No. Part No. Ref. No. Part No. C1101 403 113 3815 GRM188R71H102KA01D PT115 C272 403 215 2211 GRM188R71H103KA01D PT115 C1106 403 113 3815 GRM188R71H102KA01D PT115 C276 403 256 5011 CERAMIC 560P J C121 403 067 6274 POLYESTER 0.15U J C280 403 269 5916 GRM219R71C224KC01D PT115...
  • Page 59 Ref. No. Part No. Description Ref. No. Part No. Description C685 403 195 8824 ELECT 100U M D613 407 099 5224 ZENER DIODE MTZJ-T72-5.1B C686 403 199 9718 25 YK 470 M TA K1012 D614 407 091 6724 DIODE AP01C C691 403 209 4709 ELECT...
  • Page 60 Ref. No. Part No. Description Part No. Ref. No. Description R1022 401 105 1412 MT-GLAZE 150 JA 1/16W TRANSISTOR R1023 401 027 6638 CARBON 75 JA 1/6W 52MM Q001 405 014 4519 TR BC847B,235 10000/REEL Q1001 405 134 5925 TR BC857B,235 10000/REEL R1024 401 105 0514...
  • Page 61 Part No. Ref. No. Part No. Ref. No. Description Description R236 401 027 5532 CARBON 6K8 JA 1/6W 52MM R492 401 105 1115 MT-GLAZE 12K JA 1/16W R237 401 105 1115 MT-GLAZE 12K JA 1/16W R493 401 105 5915 MT-GLAZE 560 JA 1/16W R238 401 027 5532...
  • Page 62 All information in this manual is correct at the start of J622 401 105 7919 MT-GLAZE 0.000 ZA 1/16W production. Sanyo reserves the right to modify components and KCPA 645 006 0946 PLUG,7P procedures in order to comply with their continuous...

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