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Samsung DSR9500 CI No Video Out Vcr, R878 is 0.4V?, Q821 base signal Check CP825, Troubleshooting

Models: DSR9500 FTA DSR9500 CI DSR9500VIACI

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Troubleshooting

NO VIDEO OUT (VCR)

R878 is 0.4V?

Yes

Q821 base signal

Check CP825.

Check D805, D806.

Q821 collector, signal		Check Q821.

Yes

Check CP826, R877.

4-8	Samsung Electronics

Page 39

Image 39

Samsung DSR9500 CI No Video Out Vcr, R878 is 0.4V?, Q821 base signal Check CP825, Check D805, D806, Q821 collector, signal

Contents

3. Software Upgrade and Installation 4. Troubleshooting SERVICE ManualCONTENTS 1. Precautions 2. Operating Instructions7. PCB Diagrams MainFront COMPONENT SIDE 7-1 MainSamsung Electronics CONDUCTOR SIDECOMPONENT SIDE CONDUCTOR SIDE 7-2 FrontLoc.No 6. Electrical Parts ListDescription Specification Description SpecificationLoc.No Electrical Parts ListDescription Specification Description SpecificationLoc.No Electrical Parts ListDescription Specification Description SpecificationLoc.No Electrical Parts ListDescription Specification Description SpecificationSamsung Electronics Description SpecificationDescription Specification CONNECTOR-HEADERNOWALL,31P,1R,2.5mm,ANGLoc.No Electrical Parts ListDescription Specification Description SpecificationLoc.No Description SpecificationDescription Specification Samsung ElectronicsLoc.No Electrical Parts ListDescription Specification Description SpecificationLoc.No Description SpecificationSamsung Electronics Loc.NoLoc.No Electrical Parts ListDescription Specification Description SpecificationLoc.No Description SpecificationDescription Specification Loc.NoLoc.No Electrical Parts ListDescription Specification Description Specification6-13 Description SpecificationDescription Specification Samsung ElectronicsLoc.No Electrical Parts ListDescription Specification Description SpecificationLoc.No Description SpecificationSamsung Electronics 6-15Loc.No Electrical Parts ListDescription Specification Description SpecificationMF95-10004G Description SpecificationLoc.No Loc.NoLoc.No Electrical Parts ListDescription Specification Description Specification6-19 Description SpecificationDescription Specification Samsung ElectronicsLoc.No Electrical Parts ListDescription Specification Description SpecificationLoc.No Electrical Parts ListDescription Specification Description SpecificationLoc.No Electrical Parts ListDescription Specification Description SpecificationSMPSSRV22901EA,P151,AC/DC,-,AC85 Description SpecificationLoc.No Loc.NoLoc.No Electrical Parts ListDescription Specification Description SpecificationParts No 5. Exploded View and Parts ListDescription Specification Loc. NoMEMO Exploded View and Parts ListSamsung Electronics 4. Troubleshooting NO POWER LED OFFNo No No No No No Check U1004 Check U72, U71 Check T1001 Check U500 NO LOCKINGData control signal TroubleshootingVideo signal occur NO RF-MOD OUTPUTData waveform NO SPDIF OUTPUTTroubleshooting R430 is 5V?Q400, Q403 base video signal? NO S-VIDEO OUTPUTVideo signal occur at R405, R417 TroubleshootingR258, R259 voltage is 8~10V? NO S/W DOWNLOADNo No TroubleshootingCheck Q826 Q826 Base signal?Q825 Base signal? NO VIDEO TV SCART, RCATroubleshooting NO VIDEO OUT VCRQ821 base signal Check CP825 Q821 collector, signalNO AUDIO OUT Samsung Electronics TroubleshootingMEMO 4-10

NO VIDEO OUT (VCR)

R878 is 0.4V?

Q821 base signal

Check D805, D806.

Q821 collector, signal

Check Q821.

Check CP826, R877.