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Colour Television
Service Manual
Model CE25B5-C
Service Ref. No. CE25B5-C-00
PRODUCT CODE: 111357604
ORIGINAL VERSION: Chassis No. EB6-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
Contents
Safety precautions/Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Block diagrams. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3~5
Cabinet Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Adjustment and Repair Procedures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7~11
CPU Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12~13
Component Locations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14~15
IC Block Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16~20
Pin description of semiconductors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Part Description and reading of schematic diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Cabinet Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Electric Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24~31
Part No.
SKSM0483
C3VES
JULY 2001
25B5
CE
-C
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Summary of Contents for Sanyo CE25B5-C
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Page 1: Table Of Contents
Colour Television 25B5 Service Manual Model CE25B5-C Service Ref. No. CE25B5-C-00 PRODUCT CODE: 111357604 ORIGINAL VERSION: Chassis No. EB6-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. -
Page 2: Safety Precautions/Specifications
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 3: Block Diagrams
BLOCK DIAGRAM This is a diagram for all models and therefore differs slightly from the actual block diagram. Outline C3VES... - Page 4 AV Selector IC1201 NICAM DECODER AV-SELECTOR <MM1313> K12H Q1203 FRONT AV3 MONITOR-OUT FRONT-AV (V)34 1(V) 2(L) Q1202 MONITOR-OUT 4(R) Y-IN SC-1 SC-1 13(V) (VIDEO/AUDIO-L/R) 14(L) 16(R) SC-2 SC-2 IC3451 C-IN 7(V) (VIDEO/Y/C/AUDIO-L/R) 8(L) NICAM 9(Y) L-OUT & 10(R) 11(C) R-OUT STEREO K12J <TDA9875>...
- Page 5 Deflection Control IC501 V-Output<LA7846> Deflection Yoke Vert. V-Drive Coil IC201 IF/VIDEO/ Q431 DEFLECTION H-Output Horiz. T431 Q431 <TB1251> Drive Trans Coil H-Drive T451 FlyBack Trans D441 CS SW Screen Width Control EW-Out Pcc Control Q461 Q462 C3VES...
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Page 6: Cabinet Disassembly
CABINET DISASSEMBLY CABINET BACK DISASSEMBLY 1. Remove 7 screws(A). 2. Pull out the cabinet back. C3VES... -
Page 7: Adjustment And Repair Procedures
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 performed following setting and “SERVICE ADJUSTMENT” on next page. - Page 8 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 adjustments data for each circuit, therefore, when the memory IC is replaced, it should be performed “OPTION SETTING”...
- Page 9 To select the mode and service item and change data value + Highlight the desired adjustment mode by using the P or P button and then press the F/OK button. + To select the adjustment item, use the P or P button.
- Page 10 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. DRIVE ADJUSTMENT + B VOLTAGE ADJUSTMENT 6. Select item no.3 “REGULAR 3, GRY” (G-Drive) or 4 “REGULAR 4, GRY”...
- Page 11 CORNER ADJUSTMENT 1. Receive cross hatch pattern and set screen mode to VERTICAL HEIGHT ADJUSTMENT “FULL”. 1. Receive circular pattern and set screen mode to 2. Enter to the service mode and select mode “WIDE”, “FULL”. and select item no. 10 “WIDE 10.P CNR”. 2.
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Page 12: Cpu Functions
CPU PORT FUNCTIONS Pin No. Function Name Function IN/OUT MMU0 External memory 0 MMU3 External memory 3 ADDR10 Address bus 10 Data Strobe ADDR11 Address bus 11 ADDR9 Address bus 9 ADDR8 Address bus 8 Read Write Strobe Power Supply OSC-IN Clock Input OSC-OUT... - Page 13 Pin No. Function Name Function IN/OUT WSCF VPS/WSS Slicer Line PLL VDD-A Analogue Power Supply PXFM Pixel Frequency Multiplier RESET Reset Input (Active L) MCFM Pixel Frequency Multiplier JTRSTO TXCF CVBS0 TEST0 CVBS1 Video signal Input CVBS2 Video Signal Input GND-A DAT3 Data bus 3...
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Page 14: Component Locations
COMPONENT LOCATIONS MAIN BOARD A101 T131 IC001 IC802 IC501 Q432 T611 -14- C3VES... - Page 15 CRT BOARD Q701 C735 K7D1 -15- C3VES...
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Page 16: Ic Block Diagrams
IC BLOCK DIAGRAMS IC001 TDA7263M <Audio Output> CF COUPL RF1 27K IN -L OUT L IN +L MUTE PROTECTION REFERENCES TURN-ON SUPPLY AND-OFF PROTECTION VOLTAGE IN +R OUT R IN -R TDA7263M RF1 27K CF COUPL IC501 LA7846N <Vertical Output> THERMAL PUMP PROTECTION... - Page 17 IC201 TB1251AN <IF/Video/Chroma/Def.> H.AFC ABCL IN ref R FBP IN/SCP OUT H Vcc(9V) V OUT H OUT V NFB V RAMP Dig GND V BIAS FILTER B OUT BLACK Det G OUT Dig.VDD R OUT Sync in YC GND Y IN EXT.B IN DC Restor EXT.G IN...
- Page 18 IC1301 LA6393D <Operation Amplifier> IC1303 M34225M1<Single Chip Micro-computer> -18- C3VES...
- Page 19 IC1201 MM1313BD<AV Selector> IC3451 TDA9875A <NICAM & Stereo Sound Decoder> AUXOR SIF1 AUXOL SIF2 -19- C3VES...
- Page 20 IC3001 FA5311P <Power Switching Controller> BIAS UVLO FA5311P IC3051 TA8216H <Audio Amplifier> TA8216H AMP2 AMP1 SPEAKER SPEAKER -20- C3VES...
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Page 21: Pin Description Of Semiconductors
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 -21-... -
Page 22: Part Description And Reading Of Schematic Diagram
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 23: Cabinet Parts List
CABINET PARTS LIST FOR MODEL CE25B5-C-00 Note: Parts order must contain Service Ref. No., Part No., and descriptions. WIDE -/-- MENU/ BASS TXT/TV • Ref. No. Part No. Description Ref. No. Part No. Description CABINET PARTS ACCESSORIES 610 273 1835... -
Page 24: Electric Parts List
Note: Parts order must contain Service Ref. No., Part No., and descriptions. Description Part No. Ref. No. Chassis construction CE25B5-C-00 (Page 24~29) 1AA0B10H050S0 ASSY,PWB,MAIN C3VES 1AA0B10H047B0 ASSY,PWB,HARMONICS EB6 AC (Page 29) - Page 25 Description Ref. No. Part No. Description Ref. No. Part No. C122 403 164 0214 CERAMIC 0.1U Z C501 403 194 3800 ELECT 2200U M C124 403 157 1518 CER.GRM39COG3R0C50PT C502 403 217 1103 ELECT 220U M C125 403 069 8315 CERAMIC 0.01U Z C503...
- Page 26 Ref. No. Part No. Description Ref. No. Part No. Description D1013 407 012 4416 DIODE 1SS133-T-77 COIL D1021 407 063 8319 ZENER DIODE MTZJ11C L1003 610 078 5946 PIPE CORE D1022 407 063 8319 ZENER DIODE MTZJ11C L1010 645 001 4550 PEAKING COIL 10UHK D1023 407 063 8319...
- Page 27 Ref. No. Part No. Description Part No. Ref. No. Description Q652 405 014 4519 TR 2SC2412KT146/R R136 401 105 0415 MT-GLAZE 100 JA 1/16W Q681 405 059 9804 TR 2SD1913-Q-RA R137 401 105 5212 MT-GLAZE 470 JA 1/16W Q682 405 002 0318 TR 2SA1037K-T96-R R138 401 105 5212...
- Page 28 Part No. Ref. No. Part No. Ref. No. Description Description R447 401 026 9927 CARBON 4K7 JA 1/6W R814 401 105 7919 MT-GLAZE 0.000 ZA 1/16W R448 401 009 5843 CARBON 330 JA 1/2W R815 401 105 0415 MT-GLAZE 100 JA 1/16W R449 401 067 0000 OXIDE-MT...
- Page 29 Ref. No. Description Ref. No. Part No. Part No. Description J305 401 105 7919 MT-GLAZE 0.000 ZA 1/16W 1AA0B10H043N0 NO 3D&FAV. A2.SW.C3JEV J325 401 105 7919 MT-GLAZE 0.000 ZA 1/16W J332 401 105 7919 MT-GLAZE 0.000 ZA 1/16W CAPACITOR J333 401 105 7919 MT-GLAZE 0.000 ZA 1/16W...
- Page 30 Ref. No. Description Ref. No. Part No. Part No. Description Q1201 405 134 5925 TR 2SA1037AK-T146-R J3464 401 105 7919 MT-GLAZE 0.000 ZA 1/16W J3471 401 105 7919 MT-GLAZE 0.000 ZA 1/16W Q1202 405 014 4519 TR 2SC2412KT146/R Q1203 405 014 4519 TR 2SC2412KT146/R K12J 645 040 4610...
- Page 31 EURO PLUG +2P HOUSE @ 2.1 W902 610 286 1600 GND,WIRE CONEC.C2VAV All information in this manual is correct at the start of production. Sanyo reserves the right to modify components and procedures in order to comply with their continuous improvement policy. -31- C3VES...
- Page 32 Sanyo Industries (UK) Ltd Printed in UK -32- C3VES...