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Sanyo DS27910, Руководство по обслуживанию

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Sanyo DS27910 Скачать руководство пользователя страница 10

— 10 —

SERVICE HINTS

POWER FAILURE DETECTOR

This unit is equipped with a Power Failure Detector function included in the CPU which checks for an abnormal condition in
the chassis power supplies, including the power supply derived from the Horizontal Output Transformer.

If, while the power is on, a failure is caused by any of the following that results in a low voltage supply, the CPU will turn the
unit off in 1.5 seconds to prevent unnecessary damage:

•

Failure within the power supply circuits.

•

A short circuit in the load side from the supply.

•

Stoppage of the Horizontal Output Oscillator caused by the X-Radiation protection Hold-Down Circuit.

If, while the power is off, the power is switched on and any of these failures remains uncorrected, the CPU will shut off the
power within 3 seconds.

Check the following if the unit is turned off by the power failure detector.

1. Disconnect the AC power cord (120V AC line) for at least 10 seconds.
2. Connect a DC Voltmeter to the following TEST POINTS.

3. Press the Power key and check for the proper voltage supplies.
4. If any of these voltages is low, the power failure detector should turn the unit off within 3 seconds.
5. Check all circuits listed above.

Note: This unit is equipped with a Power Surge Protection feature included in the CPU. If power failure occurs three times

within 15 minutes, the CPU will automatically stop functioning to help prevent secondary damage. (TV will not turn on
by pressing the power key.) To reset the operating programs within the CPU, disconnect the AC power cord for at least
10 seconds.

TJ4

 26V

TJ5

 9V

D801

 5V

D429

 

Cathode

 5V

SERVICE ADJUSTMENTS (Continued)

PINCUSHION CORRECTION ADJUSTMENT

1. Connect a color-bar generator to the antenna terminals

and select a crosshatch pattern.

2. Set the picture controls to the Sports levels.
3. Turn off the receiver and disconnect the AC power cord

(AC 120V line).

4. While pressing the Menu key, reconnect the AC power

cord. The Service Menu will now appear.

5. Select No. 49 EWT with 

▲

or 

▼

key and adjust with + or –

key for equal tilt at top and bottom.

6. Select No. 48 EWA with 

▲

or 

▼

key and adjust with + or –

key for straight vertical lines at the center.

7. Select No. 50 EWP with 

▲

or 

▼

key and adjust with + or –

key for straight vertical lines at the top.

8. Select No. 51 EWB with 

▲

or 

▼

key and adjust with + or –

key for straight vertical lines at the bottom.

9. Repeat steps 5 through 8 for best pincushion adjustment.

10. Press the MENU key to turn off the Service Menu display.

Adjust No. 49 EWT for equal tilt:
Ta=Tb, Tc=Td.

Adjust No. 48 EWA for the center
part of the vertical line to be straight.

Adjust No. 50 EWP for straight verti-
cal lines at the top.
Adjust No. 51 EWB for straight verti-
cal lines at the bottom.

Ta

Tc

Tb

Td

EWP

EWB

Figure 11. Pincushion adjust

Содержание DS27910

Страница 1: ... and Test Point Locations 24 27 Schematic Insert 29 36 Schematic Notes 29 Pin Layouts 25 Capacitor and Resistor Codes 29 Block Diagram 30 31 Voltage Charts 30 32 Waveforms 32 Schematic Diagrams 33 36 Specifications Power Rating 120V 60Hz 112W Avg 2 5A Max Antenna Input Impedance 75W UHF VHF CATV Receiving Channel 2 13 VHF 14 69 UHF 01 14 94 95 125 CATV Remote Ready 38 Key Remote Control Sound Outp...

Страница 2: ...inet screw heads metal overlays control shafts etc Measure the AC voltage across the 1500 ohm resistor The AC voltage should not exceed 750 mV A reading exceeding 750 mV indicates that a dangerous potential exists The fault must be located and corrected Repeat the above test with the receiver power plug reversed NEVER RETURN A RECEIVER TO THE CUSTOMER WITHOUT TAKING THE NECESSARY CORRECTIVE ACTION...

Страница 3: ...e data with or key for 45 6 Select NO 11 HBR H BLK R with or key Adjust the data with or key for 4 7 Select NO 19 GD Green Drive with or key Adjust the data with or key for 12 8 Select NO 23 POS Pre Over SW with or key Adjust the data with or key for 1 9 Select NO 29 WP White Peak Limiter with or key Adjust the data with or key for 1 10 Select NO 34 DCR DC Reset with or key Adjust the data with or...

Страница 4: ...ion 11 HBR 3 4 0 7 H BLK R 12 HBL 4 4 0 7 H BLK L 13 CDM 0 0 0 1 C D Mode 14 VC 5 5 0 7 Vertical Compression 15 RB 0 0 0 255 Red Bias 16 GB 0 0 0 255 Green Bias 17 BB 0 0 0 255 Blue Bias 18 RD 64 64 0 127 Red Drive 19 GD 8 12 0 15 Green Drive 20 BD 64 64 0 127 Blue Drive 21 SBI 64 64 0 127 Sub Bias 22 OSD 2 2 0 3 OSD Contrast 23 POS 0 1 0 1 Pre Over SW 24 FLS 2 2 0 7 Filter System 25 CKO 3 3 0 7 C...

Страница 5: ...54 SCO 7 7 0 31 Sub Color 55 STI 20 20 0 31 Sub Tint 56 SSH 12 12 0 31 Sub Sharpness 57 OPT 0 88 0 255 Option See Note 1 page 6 58 OP2 0 46 0 255 Option 2 See Note 2 page 6 59 HR 24 24 0 63 OSD Horizontal Position 60 ATT 10 9 0 63 Input Level 61 WDB 32 32 0 63 Wideband 62 SPC 32 32 0 63 Spectral 63 SBO 5 2 0 255 Sub Bright Offset 64 PCO 40 40 0 63 PIP Color 65 PTI 40 40 0 63 PIP Tint 66 PUV 24 24 ...

Страница 6: ... 3 7 and 9 keys on the remote control See Figure 2 The Drive Level adjustment data will be written in the Service Menu No 18 and 20 automatically 1 2 3 4 5 6 7 9 8 RB RB BB BB N A GB N A GB N A FOR RED BIAS ADJUSTMENT FOR BLUE BIAS ADJUSTMENT FOR GREEN BIAS ADJUSTMENT Figure 2 Figure 3 1 2 3 4 5 6 7 9 8 RD RD BD BD N A N A N A N A N A FOR RED DRIVE ADJUSTMENT FOR BLUE DRIVE ADJUSTMENT BIT FUNCTION...

Страница 7: ...iver and disconnect the AC power cord 4 While pressing the MENU key reconnect the AC power cord The Service Menu display will now appear 5 Select NO 04 VS Vertical Size with or key 6 Adjust the data with or key for full scan To turn off the Service Menu display press the MENU key VERTICAL CENTERING ADJUSTMENT 1 Tune receiver to an active channel 2 Check that picture is in the center of TV screen I...

Страница 8: ...y reconnect the AC power cord The Service Menu display will now appear 7 Select NO 53 SB Sub Brightness with or key 8 Adjust the data with or key for 680 mVDC 9 Press the MENU key to turn off the Service Menu display 10 Check brightness level on every active channel readjust repeat steps 5 9 if necessary Note Do not set to excessive brightness level otherwise the contrast level will be suppressed ...

Страница 9: ...nect the AC power cord AC 120V line 3 Connect voltmeter RMS to TP317 and ground 4 While pressing the Menu key reconnect the AC power cord The Service Menu will now appear 5 Select NO 60 ATT Attenuation with the or key 6 Adjust the or key for a voltmeter reading of 400 20 mVrms at TP317 SEPARATION ADJUSTMENT 7 Turn off the receiver and disconnect the AC power cord AC 120V line 8 Connect oscilloscop...

Страница 10: ...in the CPU If power failure occurs three times within 15 minutes the CPU will automatically stop functioning to help prevent secondary damage TV will not turn on by pressing the power key To reset the operating programs within the CPU disconnect the AC power cord for at least 10 seconds TJ4 26V TJ5 9V D801 5V D429 Cathode 5V SERVICE ADJUSTMENTS Continued PINCUSHION CORRECTION ADJUSTMENT 1 Connect ...

Страница 11: ...to keep these assemblies intact unless picture tube is being replaced Discharge the picture tube to the coating before handling the tube 1 Remove chassis referring to Chassis Removal instructions 2 Place cabinet s front face down on a soft surface 3 Remove the screw on each corner of the picture tube and GENTLY lift the picture tube out of the cabinet 4 Install a replacement picture tube in revers...

Страница 12: ... 0 01U K 50V C146 403 224 6108 CERAMIC 0 01U K 50V C147 403 038 1603 ELECT 100U M 6 3V C151 403 048 6308 ELECT 0 47U M 50V C153 403 048 6308 ELECT 0 47U M 50V C161 403 357 9601 CERAMIC 0 1U Z 50V C211 403 086 2607 NP ELECT 1U M 50V C212 403 049 9803 ELECT 2 2U M 50V C221 403 086 2607 NP ELECT 1U M 50V C251 401 150 6001 MT GLAZE 0 000 ZA 1 10W C252 403 062 0504 POLYESTER 0 047U K 50V 403 312 2203 P...

Страница 13: ...403 051 0607 ELECT 4 7U M 50V C486 403 076 3607 CERAMIC 470P K 500V C487 403 052 8503 ELECT 1000U M 35V C489 403 044 1703 ELECT 470U M 16V C493 404 056 5307 NP ELECT 2 2U M 100V C497 403 038 1603 ELECT 100U M 6 3V C502 403 053 2104 ELECT 220U M 35V C503 403 276 0208 ELECT 2 2U K 50V C504 403 045 9807 ELECT 2200U M 25V C505 403 067 7805 MT COMPO 0 47U J 50V 403 166 7706 MT POLYEST 0 47U J 63V C506 ...

Страница 14: ...ELECT 22U M 160V C1724 403 072 4400 CERAMIC 270P K 50V C1726 403 035 8407 CERAMIC 270P K 500V C1740 403 049 0008 ELECT 1U M 50V C1748 403 069 8305 CERAMIC 0 01U Z 50V C1749 403 052 7308 ELECT 100U M 35V C1902 403 041 8804 ELECT 10U M 16V C3401 403 047 8402 ELECT 0 1U M 50V C3404 403 086 0108 NP ELECT 4 7U M 25V C3406 403 325 2504 CERAMIC 0 012U K 50V C3407 403 235 5701 CERAMIC 5600P K 50V C3408 40...

Страница 15: ...S2076A 407 013 7109 DIODE 1S2473 408 008 2406 DIODE 1N4148 D687 407 013 4306 DIODE 1S2076A 407 013 7109 DIODE 1S2473 408 008 2406 DIODE 1N4148 D693 407 057 2702 ZENER DIODE RD6 2EB2 6 2V 407 099 5402 ZENER DIODE MTZJ6 2B 6 2V D694 407 013 4306 DIODE 1S2076A 407 013 7109 DIODE 1S2473 408 008 2406 DIODE 1N4148 D702 407 055 1806 ZENER DIODE RD20EB2 20V 407 099 7901 ZENER DIODE MTZJ20B 20V D712 407 05...

Страница 16: ...IPE CORE 652 000 1725 CORE PIPE L707 610 029 8149 PEAKING COIL 100UH K 645 001 4758 INDUCTOR 100U K L717 610 029 8149 PEAKING COIL 100UH K 645 001 4758 INDUCTOR 100U K L727 610 029 8149 PEAKING COIL 100UH K 645 001 4758 INDUCTOR 100U K L801 645 008 2894 INDUCTOR 5 6U K 645 016 3104 INDUCTOR 5 6U K L851 645 008 2894 INDUCTOR 5 6U K 645 016 3104 INDUCTOR 5 6U K L881 645 006 2490 INDUCTOR 1U K 645 01...

Страница 17: ...405 020 7907 TR 2SC945A RA 405 151 8705 TR 2SC536NG NPA 405 157 0505 TR 2SC536NF NPA Q681 405 011 8401 TR 2SC1740S Q 405 011 8500 TR 2SC1740S R 405 011 8609 TR 2SC1740S S 405 012 2002 TR 2SC1815 GR 405 012 2101 TR 2SC1815 O 405 012 2309 TR 2SC1815 Y 405 020 7501 TR 2SC945A PA 405 020 7709 TR 2SC945A QA 405 020 7907 TR 2SC945A RA 405 151 8705 TR 2SC536NG NPA 405 157 0505 TR 2SC536NF NPA Q688 405 00...

Страница 18: ... Q1212 405 011 8401 TR 2SC1740S Q 405 011 8500 TR 2SC1740S R 405 011 8609 TR 2SC1740S S 405 012 2002 TR 2SC1815 GR 405 012 2101 TR 2SC1815 O 405 012 2309 TR 2SC1815 Y 405 020 7501 TR 2SC945A PA 405 020 7709 TR 2SC945A QA 405 020 7907 TR 2SC945A RA 405 151 8705 TR 2SC536NG NPA 405 157 0505 TR 2SC536NF NPA Q1700 405 001 7407 TR 2SA1015 O SAN 405 001 7605 TR 2SA1015 Y SAN 405 004 3109 TR 2SA564A Q CU...

Страница 19: ...A 1 10W R167 401 162 2701 MT GLAZE 180 JA 1 10W R201 401 162 3609 MT GLAZE 470 JA 1 10W R208 401 150 6209 MT GLAZE 1K JA 1 10W R212 401 256 7100 MT GLAZE 680K JA 1 10W R251 401 162 3005 MT GLAZE 22K JA 1 10W R252 401 162 3005 MT GLAZE 22K JA 1 10W R271 401 162 3401 MT GLAZE 39K JA 1 10W R272 401 027 5502 CARBON 6 8K JA 1 6W R273 401 024 7400 CARBON 10K JA 1 6W R274 401 162 4101 MT GLAZE 5 6K JA 1 ...

Страница 20: ...256 3607 MT GLAZE 15K JA 1 10W R601 402 056 6805 WIRE WOUND 1 KA 10W 402 073 6901 WIRE WOUND 1 KA 10W R602 402 000 0705 SOLID 3 3M KA 1 2W R603 401 007 2309 CARBON 100K JA 1 2W R604 401 065 5809 OXIDE MT 15 JA 2W R606 401 065 5809 OXIDE MT 15 JA 2W R613 401 068 6902 OXIDE MT 56 JA 2W R614 401 011 1107 CARBON 68 JA 1 2W R615 401 014 5201 CARBON 15K JA 1 4W R616 401 025 1506 CARBON 1 5K GA 1 6W R617...

Страница 21: ... 162 3005 MT GLAZE 22K JA 1 10W R1208 401 024 7004 CARBON 1K JA 1 6W R1209 401 255 6500 MT GLAZE 100 JA 1 10W R1210 401 255 6500 MT GLAZE 100 JA 1 10W R1211 401 150 6100 MT GLAZE 2 2K JA 1 10W R1212 401 256 6608 MT GLAZE 68K JA 1 10W R1213 401 150 6209 MT GLAZE 1K JA 1 10W R1214 401 256 1702 MT GLAZE 33K JA 1 10W R1218 401 024 7004 CARBON 1K JA 1 6W R1700 401 162 3708 MT GLAZE 4 7K JA 1 10W R1702 ...

Страница 22: ... F TSF5235P X161 610 015 3059 TRAP CERAMIC 4 5MHZ 645 041 1618 TRAP CERAMIC 4 5MHZ X251 610 012 0655 CRYSTAL OSCILLATOR 610 204 4195 CRYSTAL OSCILLATOR 610 245 9746 CRYSTAL OSCILLATOR X801 645 026 8434 OSC CRYSTAL 8 000MHZ MISCELLANEOUS A100 610 291 5891 ASSY PWB MAIN G7YAM A101 645 040 5150 TUNER U V 645 047 1476 TUNER U V A400 610 291 5914 ASSY PWB PCC G7YAM A700 610 291 5907 ASSY PWB SOCKET G7Y...

Страница 23: ...7 USED 7 411 026 2303 SCREW 3X10 2 USED 8 610 290 1092 DEC AV SHEET 9 610 292 2332 BUTTON UNIT 10 610 267 0851 CAP RC 11 610 293 2560 SANYO BADGE 12 610 293 3116 DEC SHEET 610 292 1021 OWNER S MANUAL 645 045 9313 RC TRANSMITTER 610 278 3186 RC BATTERY COVER CABINET PARTS LIST KEY NO PARTS NO DESCRIPTION ACCESSORY PARTS LIST KEY NO PARTS NO DESCRIPTION MENU CH VOL VOL POWER CH _ 3 2 6 8 5 9 10 1 AS...

Страница 24: ... 24 COMPONENT ANDTESTPOINT LOCATIONS MAIN BOARD PARTS SIDE Q402H4 Q402 B C E IC3401 MTS IC801 CPU IV CD IC101 IC301 ...

Страница 25: ...02 F5 Q1703 F4 Q1705 F5 R513 E2 TE7 H3 TP7 H3 TJ1 B3 TJ4 F3 TJ5 B4 TP16A E6 TP21 F6 TP50 H3 TP51 H3 TP317 B6 TP318 B6 T151 E6 MAIN BOARD COMPONENTS AND TEST POINTS GRID LOCATIONS PIC TUBE SOCKET BOARD COMPONENTS Part Loc Q701 F3 Q702 F3 Q711 H2 Q712 H2 Q721 H3 Q722 H3 Q751 F2 Q1706 G2 Q1707 G1 Q1708 G2 Q1709 G1 Q1711 F1 Q1712 F2 FOR CONTINUED PROTECTION AGAINST A RISK OF FIRE REPLACE ONLY WITH THE...

Страница 26: ... 26 COMPONENT ANDTESTPOINT LOCATIONS Cont MAIN BOARD FOIL SIDE IC801 IC801 IC101 IC301 IC3401 IC1201 ...

Страница 27: ... 27 1 2 3 PICTURETUBE SOCKET BOARD C PINCUSHION CORRECTION BOARD ...

Страница 28: ... 28 Printed in U S A July 2001 2200 SMC For parts or service contact SANYO Fisher Service Corporation 21605 Plummer Street Chatsworth CA 91311 U S A 300 Applewood Crescent Concord Ontario L4K 5C7 CANADA ...

Страница 29: ...9 3 2 IC101 70 GND IC101 71 GND IC101 72 GND IC101 73 2 3 IC101 74 0 IC101 75 2 3 IC101 76 2 7 IC101 77 2 3 IC101 78 2 9 IC101 79 2 9 IC101 80 GND IC301 1 0 9 IC301 2 4 9 IC301 3 2 0 IC301 4 GND IC301 5 5 1 IC301 6 5 1 IC301 7 0 3 IC301 8 0 3 IC301 9 0 7 IC301 10 0 IC301 11 0 IC301 12 1 5 IC301 13 GND IC301 14 1 8 IC301 15 0 IC301 16 1 5 IC501 1 GND IC501 2 15 1 IC501 3 29 7 IC501 4 2 7 IC501 5 2 ...

Страница 30: ...KZ0 1 LZF 16EM 10 100 X KZ0 1 LZF TC4053BFP X X 16EM 47 X 1 10GJ 22KC 1 10GJ1KC X X X X X X X X AE EM1 1 10GJ 68KC 1 10GJ 33KC 1 10GJ 1KC 1 10GJ 2 2KC 1 10GJ 2 2KC 1 10GJ 1KC 1 10GJ 33KC 1 10GJ 68KC EM1 AE X 1 10GJ10KC EM0 47 AC EM0 47 KK0 01 LZB 6 3EM 100 1 10 GJ 33KC F32B0190N F32B0290N 1 10GJ 1KC L2B9 150KN L2E1 150KN 1SJ33 RD5 1EB2 MTZJ5 1A 1 10GJ 22KC RD5 6EB3 MTZJ5 6C 2SD400 E MP F MP 390 1S...

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