Advertisement
Quick Links
Colour Television
Service Manual
Model CE28DN7-C
Service Ref. No. CE28DN7-C-00
PRODUCT CODE: 111351318
ORIGINAL VERSION: Chassis No. EB6-B
Please use Schematic Diagram for CE28DN7-C-00.
Part no SKP20350.
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. SKSM0533
C2WYV
JANUARY 2001
28DN7
CE
-C
Advertisement
Related Manuals for Sanyo CE28DN7-C
Summary of Contents for Sanyo CE28DN7-C
- Page 1 Model CE28DN7-C Service Ref. No. CE28DN7-C-00 PRODUCT CODE: 111351318 ORIGINAL VERSION: Chassis No. EB6-B Please use Schematic Diagram for CE28DN7-C-00. Part no SKP20350. 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 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 Q701 Q711 Aerial Q721 VIDEO-OUT A101 TUNER Q242 X132 Q141 Q243 Q244 IC201 X131 TV-OUT PC-IN POWER Q121~Q133 IF/VIDEO/ CHROMA/ TV-IN SC-1 SIF-IN C BUS C-OUT SC-2 Y-OUT IC801 MONTO SYNC-IN -OUT EW-OUT Refer also IC803 to FIG.-2. MEMORY AV SELECTOR H-OUT T451 NICAM DECODER...
- Page 4 AV Selector IC1201 NICAM DECODER AV-SELECTOR <MM1313> K12H Q1203 FRONT AV3 MONITOR-OUT FRONT-AV (V)34 1(V) 2(L) MONITOR-OUT Q1202 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<LA7833> Deflection Yoke Vert. V-Drive Coil IC201 IF/VIDEO/ Q431 H-Output DEFLECTION Horiz. T431 Q431 <TB1251> Drive Trans Coil H-Drive T451 FlyBack Trans EW-Out Pcc Control Q461 Q462 C2WYV...
- Page 6 CABINET DISASSEMBLY CABINET BACK DISASSEMBLY 1. Remove 7 screws(A). 2. Pull out the cabinet back. C2WYV...
- Page 7 BG + DK SIF OPTION AUTO VOLUME ADJUST : EXIT : RECALL OPTION SETTINGS FOR CE28DN7-C-00 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 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 programmed by using “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 VERTICAL HEIGHT ADJUSTMENT 1. Receive cross hatch pattern and set screen mode to 1. Receive circular pattern and set screen mode to “FULL”. “FULL”. 2. Enter to the service mode and select mode “WIDE”, 2. Enter to the service mode and select mode “WIDE”, and select item no.
- Page 12 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...
- Page 14 COMPONENT LOCATIONS MAIN BOARD A101 T131 IC001 IC802 IC501 Q432 T611 -14- C2WYV...
- Page 15 CRT BOARD Q701 C735 K7D1 -15- C2WYV...
- Page 16 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 LA7833N <Vertical Output> PUMP UP VERTICAL VERTICAL...
- 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 IC3451 TDA9875A <NICAM & Stereo Sound Decoder> AUXOR SIF1 AUXOL SIF2 -18- C2WYV...
- Page 19 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 -19-...
- Page 20 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 21 CABINET PARTS LIST FOR MODEL CE28DN7-C-00 Note: Parts order must contain Service Ref. No., Part No., and descriptions. Ref. No. Part No. Description Ref. No. Part No. Description CABINET PARTS ACCESSORIES 1AA0CAM0258-F ASSY,CABINET FR-C2WR JXMTA RC TRANSMITTER 610 276 5618...
- Page 22 Note: Parts order must contain Service Ref. No., Part No., and descriptions. Description Part No. Ref. No. Chassis construction CE28DN7-C-00 Read description in the Capacitor and Resistor as follows: 1AA0B10H050U0 ASSY,PWB,MAIN C2WYV (Page 24~29) CAPACITOR 1AA0B10H043L0 NO 3D.
- Page 23 Description Ref. No. Part No. Description Ref. No. Part No. C1050 403 157 3611 GRM1885C1H101JZ01D PT115 C424 403 083 3201 POLYPRO 0.012U J 400V C106 403 149 9218 CERAMIC 0.01U Z C431 403 068 5612 CERAMIC 0.056U Z C109 403 149 9218 CERAMIC 0.01U Z C432...
- Page 24 Ref. No. Part No. Description Ref. No. Part No. Description C833 403 157 2515 CERAMIC 27P J IC001-1 610 251 4186 AUDIO HEATSINK ASSY E7PC C834 403 157 2515 CERAMIC 27P J IC201 409 504 3300 IC TB1251CN VER 6.3 C835 403 155 2319 CERAMIC...
- Page 25 Ref. No. Part No. Description Part No. Ref. No. Description Q132 405 002 0318 TR 2SA1037K-T96-R R1025 401 105 5311 MT-GLAZE 4.7K JA 1/16W Q133 405 014 4519 TR 2SC2412KT146/R R1026 401 105 0415 MT-GLAZE 100 JA 1/16W Q141 405 015 9721 TR 2SC2814-F4-TB R1027 401 105 0514...
- Page 26 Part No. Ref. No. Part No. Ref. No. Description Description R216 401 105 0613 MT-GLAZE 10K JA 1/16W R622 401 014 5241 CARBON 15K JA 1/4W R217 401 024 7430 CARBON 10K JA 1/6W R623 401 026 4328 CARBON 3K3 JA 1/6W R230 401 105 4215...
- Page 27 Ref. No. Description Ref. No. Part No. Part No. Description R872 401 105 0613 MT-GLAZE 10K JA 1/16W 645 004 2881 PLUG,2P R873 401 105 0613 MT-GLAZE 10K JA 1/16W 645 032 1924 SOCKET,PWB-PWB 20P R874 401 026 9620 CARBON 470 JA 1/6W 645 008 7288...
- Page 28 Ref. No. Description Ref. No. Part No. Part No. Description C3484 403 248 1618 ELECT 47U M R1229 401 105 2013 MT-GLAZE 1.8K JA 1/16W C3485 403 149 9218 CERAMIC 0.01U Z R1230 401 105 3218 MT-GLAZE 270 JA 1/16W C3486 403 248 1410 ELECT...
- Page 29 EURO PLUG +2P HOUSE @ 2.1 W902 610 286 1594 GND,WIRE CONEC.C2WAV 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. -29- C2WYV...
- Page 30 Kind(Ceramic) C, K, B : Ceramic 6. Voltage readings taken a digital voltmeter are from point indi- MODEL NUMBER CE28DN7-C 2SC1740(Q,R,S), 2SC945A(Q,R,P) or servicing the area, connect an F : Mylar film Diode to product safety. It is particularly rec- cated chassis ground.
- Page 31 Part No. SKP20350 C2WYV (SHEET 2-3)
- Page 32 OPTION SETTING MAIN BOARD ADJUSTMENTS CPU PORT FUNCTIONS [After replacing the Memory IC (IC803)] Pin No. Function Name Function IN/OUT The memory IC, IC803, stores the option data of TV set and service adjustments data for each circuit, therefore, IMPORTANT NOTICE MMU0 External memory 0 when the memory IC is replaced, it should be performed following setting and SERVICE ADJUSTMENT on next...