Sanyo CE28CN8F-C Service Manual

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Colour Television
Service Manual
Model CE28CN8F-C
Service Ref. No. CE28CN8F-C-00
PRODUCT CODE: 111361018
ORIGINAL VERSION: Chassis No. EB8-A
Please use Schematic Diagram SKP20442
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. SKSM0719
C5WYS
JULY 2004
28CN8F
CE
-C

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  Summary of Contents for Sanyo CE28CN8F-C

  • Page 1 Colour Television 28CN8F Service Manual Model CE28CN8F-C Service Ref. No. CE28CN8F-C-00 PRODUCT CODE: 111361018 ORIGINAL VERSION: Chassis No. EB8-A Please use Schematic Diagram SKP20442 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: Block Diagram

    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 C5WYS...
  • Page 3: Option Setting

    B/G, D/K, I, L/L' WIDE TEXT NO SIGNAL ADJUST : EXIT : RECALL OPTION MODE FOR CE28CN8F-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 4: Service Adjustments

    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 5: Initialisation Of Memory Ic

    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 6 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 7 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 8: Cpu Port 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 9 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 10 C : Solid significance to product safety. It is particular- Transistor 2SA608(E,F) may be replaced with CE28CN8F-C bar signal are with all controls at normal position. Some volt- MODEL NUMBER between TV receiver and AC line to ly recommended that only parts specified on ages may vary with signal strength.
  • Page 11: Chassis Electrical Parts List

    Note: Parts order must contain Service Ref. No., Part No., and descriptions. Description Part No. Ref. No. Chassis construction CE28CN8F-C-00 013C5WYS ELECTRICAL PARTS (PAGE 19) 1AA0B10H069EA ASSY,PWB,MAIN C5WYS...
  • Page 12 Description Description Ref. No. Part No. Ref. No. Part No. C109 403 113 3815 GRM188R71H102KA01D PT115 C268 403 233 0817 ELECT 10U M C110 403 113 4119 GRM188R71H222KA01D PT115 C269 403 164 0214 GRM188F51E104ZA01D PT115 C1101 403 113 3815 GRM188R71H102KA01D PT115 C271 403 258 3619 25 YK 33 M TA 0511...
  • Page 13 Ref. No. Part No. Description Ref. No. Part No. Description C686 403 199 9718 25 YK 470 M TA K1012 D614 407 091 6724 DIODE AP01C C691 403 233 1111 ELECT 22U M D615 407 099 7624 ZENER DIODE MTZJ-T72-18B C801 403 269 5916 GRM219R71C224KC01D PT115...
  • Page 14 Ref. No. Part No. Description Part No. Ref. No. Description Q1003 405 134 5925 TR BC857B,235 10000/REEL R1024 401 105 0514 MT-GLAZE 1K JA 1/16W Q1004 405 014 4519 TR BC847B,235 10000/REEL R1026 401 105 0514 MT-GLAZE 1K JA 1/16W Q111 405 014 4519 TR BC847B,235 10000/REEL...
  • Page 15 Part No. Ref. No. Part No. Ref. No. Description Description R231 401 105 6615 MT-GLAZE ERJ 3GEYJ682V R492 401 105 1115 MT-GLAZE 12K JA 1/16W R232 401 105 6615 MT-GLAZE ERJ 3GEYJ682V R493 401 105 5915 MT-GLAZE 560 JA 1/16W R233 401 105 1115 MT-GLAZE...
  • Page 16 All information in this manual is correct at the start of KE-1 645 008 4058 TERMINAL PLUG production. Sanyo reserves the right to modify components and KE-2 645 008 4058 TERMINAL PLUG procedures in order to comply with their continuous...