Table of Contents
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Service Manual
Colour Television
Index
1. Safety instructions..................................................................................................................................................................................................1
2. WARNING .............................................................................................................................................................................................................1
3. Precaution against X-Rays .....................................................................................................................................................................................1
4. Technical characteristics........................................................................................................................................................................................2
5. Safety .....................................................................................................................................................................................................................2
6. EMC (Electromagnetic Compatibility).....................................................................................................................................................................2
7. Factory special mode..............................................................................................................................................................................................3
8. "HOTEL" and "RENTAL" modes............................................................................................................................................................................3
9. Automatic channel search reactivating ...................................................................................................................................................................3
10. Block diagram.......................................................................................................................................................................................................4
11. Power supply........................................................................................................................................................................................................5
12. Microprocessor and Teletext ................................................................................................................................................................................5
13. Video processor/Comb filter .................................................................................................................................................................................5
13.1 Video Intermediate Frequency Section ..........................................................................................................................................................5
13.2 Horizontal and vertical synchronisation..........................................................................................................................................................5
13.3 Geometry .......................................................................................................................................................................................................6
13.4 Filters and video switches..............................................................................................................................................................................6
13.5 Colour decoder ..............................................................................................................................................................................................6
13.6 RGB Processing............................................................................................................................................................................................6
13.7 RGB Control ..................................................................................................................................................................................................7
13.8 Supply and bandgap decoupling....................................................................................................................................................................7
14. Audio processor/A3D Surround/Output amplifiers/Sound IF................................................................................................................................7
15. Service menu........................................................................................................................................................................................................8
16. Adjustment and repair procedures .....................................................................................................................................................................10
16.1 Notes about the adjustment: ........................................................................................................................................................................10
16.2 Switch-on sequence. ...................................................................................................................................................................................11
16.3 Protect modes and failure indication ............................................................................................................................................................11
16.4 Protect mode inhibition ................................................................................................................................................................................11
16.5 Power supply repair procedure ....................................................................................................................................................................11
16.6 Non-volatile memory (NVM) replacement, IC125.........................................................................................................................................11
17. Failure location flow-charts.................................................................................................................................................................................12
18. Complete PCB codes for after sales service ......................................................................................................................................................15
19. CHASSIS ELECTRICAL PARTS LIST CE21FN1-E / CE25FN1-E / CE28FN1-E ...........................................................................................16
20. CE21FN1-E CABINET PARTS LIST ................................................................................................................................................................17
21. CE25FN1-E CABINET PARTS LIST ................................................................................................................................................................18
22. CE28FN1-E CABINET PARTS LIST ................................................................................................................................................................19
23. Parts List ............................................................................................................................................................................................................20
Give complete "SERVICE PART No" for parts order or
servicing, it is shown on the rating sheet on the cabinet
back of the TV set.
16-11-1998
Models:
CE28FN1-E
CE25FN1-E
CE21FN1-E
CRT 28" A59EAK071X11
CRT 25" A66EAK071X11
CRT 21" A51EAL155X10
CRT 21" A51EAL155X11
CHASSIS No 2103
EB5-A
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.
Ref. Nº MS CE25FN1-E
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Table of Contents
Related Manuals for Sanyo CE28FN1-E
Summary of Contents for Sanyo CE28FN1-E
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Page 1: Table Of Contents
16.6 Non-volatile memory (NVM) replacement, IC125............................11 17. Failure location flow-charts....................................12 18. Complete PCB codes for after sales service ..............................15 19. CHASSIS ELECTRICAL PARTS LIST CE21FN1-E / CE25FN1-E / CE28FN1-E ...................16 20. CE21FN1-E CABINET PARTS LIST ................................17 21. CE25FN1-E CABINET PARTS LIST ................................18 22. -
Page 2: Safety Instructions
1. Safety instructions Read this page before doing any operation of adjustment, maintenance or repair the TV set described. Only skilled personnel of Sanyo Technical Service should do the adjustment, maintenance or repair of TV set. 2. WARNING For the correct and safe use of the TV set, it is essential that the service personnel follow the process of safety generally accepted and the safety precautions specified in this manual. -
Page 3: Technical Characteristics
4. Technical characteristics Cathode-ray tubes 21” (54 cm) Model CE21FN1-E 25” (65 cm) Model CE25FN1-E 28” (70 cm) Model CE28FN1-E In-Line gun type. Black Matrix. Tuning system Voltage synthesis, 100 programs in non volatile memory, AFT, fine tuning (first 10 programs), automatic, semiautomatic and manual channel search. -
Page 4: Factory Special Mode
Service Manual MS CE25FN1-E 7. Factory special mode The factory mode is a special TV working mode intended to help in the manufacturing process and it is identified on the screen with the message “FAC”. This mode is never suited for customer use. The main differences respect to normal mode are: 1- The standby mode is always disabled. -
Page 5: Block Diagram
Service Manual MS CE25FN1-E 10. Block diagram... -
Page 6: Power Supply
Service Manual MS CE25FN1-E 11. Power supply First, let’s define some TV states or working modes to clarify later explanations: State Description SMPS_B_LOW The power supply is in low consumption (low voltage). The deflection is stopped. SMPS_B_HIGH The power supply works at nominal voltage. The deflection can be on or off. STANDBY The micro stops “B_HIGH”... -
Page 7: Geometry
Service Manual MS CE25FN1-E detector are controlled via I2C bus. • PHI-2 detector and Sandcastle generator: The PHI-2 detector performs a stable picture. It synchronises the horizontal oscillator with the horizontal flyback signal (pin 41, FBISO) to generate the horizontal output (pin 40, HOUT). -
Page 8: Rgb Control
Service Manual MS CE25FN1-E B-Y matrixing, the output signals are added with the luminance signal in order to generate the internal RGB signals. • RGB selector: it is controlled by the FB signal in signal 26 (RGBIN). The external RGB signals are present in pins 23 (RI), 24 (GI) and 25 (BI). -
Page 9: Service Menu
Service Manual MS CE25FN1-E The microprocessor detects the headphones presence via the HP_SW signal. The MUTE signal also affects the headphones audio. The FM or NICAM-modulated sound IF signal, which inputs the audio processor, is produced by the sound IF circuit, IC1350. - Page 10 TXEAST Eastern characters set ON/OFF Skin tone correction angle ON/OFF HV discharge mode ON/OFF TV set trade-mark ON/OFF OFF in SANYO models ON in SONITRON models 16:9 16:9 picture configuration ON/OFF PAL B/G PAL B/G Configuration ON/OFF PAL D/K PAL D/K Configuration...
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Page 11: Adjustment And Repair Procedures
Service Manual MS CE25FN1-E 16. Adjustment and repair procedures ADJUSTMENT SIGNAL CONDITIONS TEST POINTS ADJUSTMENT POINT ADJUSTMENT PROCEDURE INSTRUMENTS Power supply Philips pattern Picture: Normalised VR800 Adjust to obtain: Voltmeter DC Sound: Minimum volume Cathode D850 150V ± 0.5V in CRTs Philips A59/A66EAK071X11 if C651 = 12 nF Resolution >0,1V 148V ±... -
Page 12: Switch-On Sequence
Service Manual MS CE25FN1-E 16.2 Switch-on sequence. In case of malfunction it is very important to know the switch-on procedure: 1. When the reset is at low level the microprocessor begins to work. 2. It recalls from NVM the last state before the switch-off. 3. -
Page 13: Failure Location Flow-Charts
Service Manual MS CE25FN1-E 17. Failure location flow-charts ERROR_1 ERROR_2 ERROR_5 Switch on the TV set with PL100 Are the retrace Does it happen quickly Check +5Vin L1304 (audio PCB) pushed (protect mode disabled) lines visible? after switch on? Check the +8V supply *Check +B3 at IC500 in pins 12 and 37 of IC400 Check the vertical deflection... - Page 14 Service Manual MS CE25FN1-E ERROR_3 Does it happen quickly Are retrace lines visible ? after switch on? *Check +B3 at IC500 Switch on the TV set with PL100 *R506 posibly fused pushed (protect mode disabled) *IC500 posibly damaged * Possible failure of T650 Does it sound line * Possible shortcircuit in stage abnormal?
- Page 15 Service Manual MS CE25FN1-E ERROR_4 Put a jumper between B-E of Q850 (N.1) Probably: Check +B4 Check the rectifier * IC701failure (cathode of D852) diodes * Shortcircuit or over consumptiom * IC850 does not work OK In models with Active 3D Surround: Check +9V In models without Active 3D Surround:Skip this step Probably: Is the voltage level...
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Page 16: Complete Pcb Codes For After Sales Service
Probably IC800 failure - N.1: If there is an IC800 failure, and R810 was openned, it is strongly recommended to replace also the resistors R804 and R805 18. Complete PCB codes for after sales service CE28FN1-E CE25FN1-E CE21FN1-E CRT (PHILIPS) -
Page 17: Chassis Electrical Parts List Ce21Fn1-E / Ce25Fn1-E / Ce28Fn1-E
Service Manual MS CE25FN1-E 19. CHASSIS ELECTRICAL PARTS LIST CE21FN1-E / CE25FN1-E / CE28FN1-E Position Part No. Description Position Part No. Description YG 1 0200826402 LED Holder YG 4 ¬ 0080112501 COMP. Side IF Shield EB5-A YG 5 0080112600 Copper Side IF Shield EB5-A Assy PF(Power Supply) ¬... -
Page 18: Ce21Fn1-E Cabinet Parts List
Service Manual MS CE25FN1-E 20. CE21FN1-E CABINET PARTS LIST Location Part No. Description YP 4 0020125209 SANYO Badge 46,2X13,5 L46 YP 5 0340207000 TRANS. DEC BOARD F3SCM YF 1 2700047315 Front Cabinet Assy 21" YF 2 0590265617 Back Cover 21"... -
Page 19: Ce25Fn1-E Cabinet Parts List
Service Manual MS CE25FN1-E 21. CE25FN1-E CABINET PARTS LIST Location Part No. Description YP 4 0020125209 SANYO Badge 46,2X13,5 L46 YP 5 0340207000 TRANS. DEC BOARD F3SCM YF 1 2700046713 Front Cabinet Assy 25" A F3PC YF 2 0590264719 Back Cover 25" A-F3PAM... -
Page 20: Ce28Fn1-E Cabinet Parts List
Service Manual MS CE25FN1-E 22. CE28FN1-E CABINET PARTS LIST Location Part No. Description YP 4 0020125209 SANYO Badge 46,2X13,5 L46 YP 5 0340207000 TRANS. DEC BOARD F3SCM YF 1 2700046812 Front Cabinet Assy 28" YF 2 0590265013 Back Cover 25" A-F3PAM... -
Page 21: Parts List
Service Manual MS CE25FN1-E Location Part No. Description Location Part No. Description C1053 25”/28” 0230600504 Ceramic SMD 100 nF. 10% 25V. 25”/28” C1054 0230600504 Ceramic SMD 100 nF. 10% 25V. 23. Parts List C1055 25”/28” 0230600504 Ceramic SMD 100 nF. 10% 25V. 25”/28”... - Page 22 Service Manual MS CE25FN1-E Location Part No. Description Location Part No. Description C364 0230320301 Ceramic SMD 470 pF. 10% 50V. C706 0230360406 Ceramic SMD 1000 pF. 10% 50V. C400 0250461266 Electrolytic 100 µF. 16V. C710 0270220726 Polyester 10 nF. 10% 250V. C401 0230600603 Ceramic SMD 100 nF.
- Page 23 Service Manual MS CE25FN1-E Location Part No. Description Location Part No. Description D830 0360601504 SMD MCL4148 C925 0230320301 Ceramic SMD 470 pF. 10% 50V. D831 0360376909 ERB44-02 C926 0250410867 Electrolytic 47 µF. 16V. D832 0360604508 Zener SMD BZM55C10 C927 0230720203 Ceramic SMD 1 µF. 16V. +80-20% D850 25”/28”...
- Page 24 Service Manual MS CE25FN1-E Location Part No. Description Location Part No. Description 0790701106 SMD 0 Ω 1/10W. J-251 25”/28” L857 0090305665 Peaking Coil 4,7 µH 10% I MAX=930MA L858 0090305665 Peaking Coil 4,7 µH 10% I MAX=930MA 0790701106 SMD 0 Ω 1/10W. J-252 L859 0090305665 Peaking Coil 4,7 µH 10% I MAX=930MA...
- Page 25 Service Manual MS CE25FN1-E Location Part No. Description Location Part No. Description 0790235006 R.M.G. SMD 470 Ω 5% 1/10W. R202 0790846109 R.M.G. SMD 220 Ω 5% 1/10W. R203 RESISTORS 0790126700 Carbon 100 Ω 5% 1/6W. R100 0790846109 R.M.G. SMD 220 Ω 5% 1/10W. R204 0790227003 R.M.G.
- Page 26 Service Manual MS CE25FN1-E Location Part No. Description Location Part No. Description 0790303408 Metal Film 1,33 Ω 1% 0,6W. R416 0790784201 R.M.G. SMD 4,7 MΩ 5% 1/10W. R702 21” 0790119200 Carbon 22 Ω 5% 1/2W. R417 0790784201 R.M.G. SMD 4,7 MΩ 5% 1/10W. R703 25”/28”...
- Page 27 0940108202 FBT 21" HFT867M IC1300 0360513808 TDA 9875 V1 T650A 0640705117 Eyelet 2,5-3 IC1380 0360513907 MM 1369BD T650CF 0330160508 FOCUS Wire FBT SANYO T650CG 21” 0330160607 G2 Wire FBT K1300A 0330330101 8P. Connector T800 25”/28” 0930107008 Switch Transf. 110DG EB5-A 10592330 K1300B 0330380106 12P.
- Page 28 21” EM 3 0190177410 Bottom Cushion Assy 21" 0790227003 R.M.G. 100 Ω 5% 1/10W R1301 EM10 0600122808 Remote Control EB-5A SANYO R1302 0790251003 R.M.G. SMD 10 KΩ 5% 1/10W. EM13 0390238418 Electrostatic LABEL EB5-A R1303 0790239008 R.M.G. SMD 1 KΩ 5% 1/10W.